An Investigation Of Topology Optimization For Coupled Thermo Structural Loading For Additive Manufacturing

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An Investigation of Topology Optimization for Coupled Thermo-structural Loading for Additive Manufacturing

Author : Vaibhav Gaikwad
Publisher :
ISBN 13 :
Total Pages : 95 pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis An Investigation of Topology Optimization for Coupled Thermo-structural Loading for Additive Manufacturing by : Vaibhav Gaikwad

Download or read book An Investigation of Topology Optimization for Coupled Thermo-structural Loading for Additive Manufacturing written by Vaibhav Gaikwad and published by . This book was released on 2017 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work investigates the ability of topology optimization methods to design multifunctional components with coupled thermo-structural loading for fabrication with additive manufacturing technologies. Topology Optimization is a mathematical approach developed to perform design optimization with the purpose of reducing material usage, while maximizing the structural and thermal performance, in accordance to specific design constraints. Additive manufacturing provides the capability to create internal structures and complex surfaces developed by topology optimization that would not be possible to produce by conventional manufacturing. The more structurally efficient configuration generated by topology optimization and fabricated with additive manufacturing can result in components with improved structural capability and reduced mass. Design optimization most often follows a single discipline approach in which analysis is carried out either by solving the problem from a structural or a thermal point view, but not both simultaneously. The present work involves the study of combined thermal and structural systems using a multidisciplinary optimization technique to design co-optimal systems. The investigation for this work consists of two case studies: the design of a structural heat conductor and the design of an exhaust-washed structure. For a simple structural heat conductor with various thermal and structural boundary conditions, minimizing compliance is a structural objective whereas minimizing the maximum temperature is a thermal objective, hence carrying out structural analysis on a thermally optimized beam and vice versa. The presence of a thermal load may influence the structural performance by affecting component behavior and vice-versa for structural loading. To overcome this problem, combining both thermal and structural analysis is important. Thus, a systematic study of obtaining a thermal objective using structural constraint and structural objective using a thermal constraint is carried out for the combined system to be co-optimal. Also, the design of aircraft exhaust washed structure has been carried out using a minimum compliance objective.

Topology Optimization in Engineering Structure Design

Author : Jihong Zhu
Publisher : Elsevier
ISBN 13 : 0081021194
Total Pages : 296 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Topology Optimization in Engineering Structure Design by : Jihong Zhu

Download or read book Topology Optimization in Engineering Structure Design written by Jihong Zhu and published by Elsevier. This book was released on 2016-11-08 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topology Optimization in Engineering Structure Design explores the recent advances and applications of topology optimization in engineering structures design, with a particular focus on aircraft and aerospace structural systems.To meet the increasingly complex engineering challenges provided by rapid developments in these industries, structural optimization techniques have developed in conjunction with them over the past two decades. The latest methods and theories to improve mechanical performances and save structural weight under static, dynamic and thermal loads are summarized and explained in detail here, in addition to potential applications of topology optimization techniques such as shape preserving design, smart structure design and additive manufacturing.These new design strategies are illustrated by a host of worked examples, which are inspired by real engineering situations, some of which have been applied to practical structure design with significant effects. Written from a forward-looking applied engineering perspective, the authors not only summarize the latest developments in this field of structure design but also provide both theoretical knowledge and a practical guideline. This book should appeal to graduate students, researchers and engineers, in detailing how to use topology optimization methods to improve product design. Combines practical applications and topology optimization methodologies Provides problems inspired by real engineering difficulties Designed to help researchers in universities acquire more engineering requirements

Implementation of Coupled Thermo-Mechanical Topology Optimization Methods for Effective Additive Manufacturing of a Gas Turbine Component

Download Implementation of Coupled Thermo-Mechanical Topology Optimization Methods for Effective Additive Manufacturing of a Gas Turbine Component PDF Online Free

Author : Pouyan Rahnama
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (126 download)

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Book Synopsis Implementation of Coupled Thermo-Mechanical Topology Optimization Methods for Effective Additive Manufacturing of a Gas Turbine Component by : Pouyan Rahnama

Download or read book Implementation of Coupled Thermo-Mechanical Topology Optimization Methods for Effective Additive Manufacturing of a Gas Turbine Component written by Pouyan Rahnama and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing (AM) is a relatively new technology that is making its way into different industries at a fast pace. In order to take full advantage of flexibility and freedom that this technology provides, a proper and comprehensive approach towards Design for Additive Manufacturing (DfAM) is necessary. Topology optimization is one of the tools that is commonly used to design or redesign a component to be printed by AM technologies. Utilizing topology optimization, the best design for a component subjected to various loading conditions can be obtained. The implementation of topology optimization becomes more challenging when the part is subjected to different loading cases, especially at high thermal loads. In this thesis, a new method is proposed to perform coupled thermo-mechanical topology optimization, and then a workflow is presented to implement this method in DfAM. In the suggested guideline, the effect of different filters, as well as initial setup conditions, are considered for topology optimization. In addition, some common software tools for topology optimization are also discussed. Among the existing software systems, HyperWorks is selected to be utilized in this study due to its distinguished capabilities which offer favorable controllability over the process. Then, the proposed method and workflow for DfAM are applied in HyperWorks to redesign a gas turbine rotor seal, which is subjected to high temperature, high pressure, and centrifugal loads. Also, In order to validate the workflow and the methodology, an experimental setup is designed to test the performance of a topology optimized cantilever under thermo-mechanical loadings. The experimental results validated simulations and proved that the part designed based on thermo-mechanical optimization has a better performance overall for thermal and mechanical loads.

Algorithm-Driven Truss Topology Optimization for Additive Manufacturing

Author : Christian Reintjes
Publisher : Springer Nature
ISBN 13 : 3658362111
Total Pages : 219 pages
Book Rating : 4.6/5 (583 download)

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Book Synopsis Algorithm-Driven Truss Topology Optimization for Additive Manufacturing by : Christian Reintjes

Download or read book Algorithm-Driven Truss Topology Optimization for Additive Manufacturing written by Christian Reintjes and published by Springer Nature. This book was released on 2022-02-01 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since Additive Manufacturing (AM) techniques allow the manufacture of complex-shaped structures the combination of lightweight construction, topology optimization, and AM is of significant interest. Besides the established continuum topology optimization methods, less attention is paid to algorithm-driven optimization based on linear optimization, which can also be used for topology optimization of truss-like structures. To overcome this shortcoming, we combined linear optimization, Computer-Aided Design (CAD), numerical shape optimization, and numerical simulation into an algorithm-driven product design process for additively manufactured truss-like structures. With our Ansys SpaceClaim add-in construcTOR, which is capable of obtaining ready-for-machine-interpretation CAD data of truss-like structures out of raw mathematical optimization data, the high performance of (heuristic-based) optimization algorithms implemented in linear programming software is now available to the CAD community.

Topology Design Methods for Structural Optimization

Author : Osvaldo M. Querin
Publisher : Butterworth-Heinemann
ISBN 13 : 0080999891
Total Pages : 205 pages
Book Rating : 4.0/5 (89 download)

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Book Synopsis Topology Design Methods for Structural Optimization by : Osvaldo M. Querin

Download or read book Topology Design Methods for Structural Optimization written by Osvaldo M. Querin and published by Butterworth-Heinemann. This book was released on 2017-06-09 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topology Design Methods for Structural Optimization provides engineers with a basic set of design tools for the development of 2D and 3D structures subjected to single and multi-load cases and experiencing linear elastic conditions. Written by an expert team who has collaborated over the past decade to develop the methods presented, the book discusses essential theories with clear guidelines on how to use them. Case studies and worked industry examples are included throughout to illustrate practical applications of topology design tools to achieve innovative structural solutions. The text is intended for professionals who are interested in using the tools provided, but does not require in-depth theoretical knowledge. It is ideal for researchers who want to expand the methods presented to new applications, and includes a companion website with related tools to assist in further study. Provides design tools and methods for innovative structural design, focusing on the essential theory Includes case studies and real-life examples to illustrate practical application, challenges, and solutions Features accompanying software on a companion website to allow users to get up and running fast with the methods introduced Includes input from an expert team who has collaborated over the past decade to develop the methods presented

Evolutionary Topology Optimization of Continuum Structures

Author : Xiaodong Huang
Publisher : John Wiley & Sons
ISBN 13 : 9780470689479
Total Pages : 240 pages
Book Rating : 4.6/5 (894 download)

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Book Synopsis Evolutionary Topology Optimization of Continuum Structures by : Xiaodong Huang

Download or read book Evolutionary Topology Optimization of Continuum Structures written by Xiaodong Huang and published by John Wiley & Sons. This book was released on 2010-03-11 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolutionary Topology Optimization of Continuum Structures treads new ground with a comprehensive study on the techniques and applications of evolutionary structural optimization (ESO) and its later version bi-directional ESO (BESO) methods. Since the ESO method was first introduced by Xie and Steven in 1992 and the publication of their well-known book Evolutionary Structural Optimization in 1997, there have been significant improvements in the techniques as well as important practical applications. The authors present these developments, illustrated by numerous interesting and detailed examples. They clearly demonstrate that the evolutionary structural optimization method is an effective approach capable of solving a wide range of topology optimization problems, including structures with geometrical and material nonlinearities, energy absorbing devices, periodical structures, bridges and buildings. Presents latest developments and applications in this increasingly popular & maturing optimization approach for engineers and architects; Authored by leading researchers in the field who have been working in the area of ESO and BESO developments since their conception; Includes a number of test problems for students as well as a chapter of case studies that includes several recent practical projects in which the authors have been involved; Accompanied by a website housing ESO/BESO computer programs at http://www.wiley.com/go/huang and test examples, as well as a chapter within the book giving a description and step-by-step instruction on how to use the software package BESO2D. Evolutionary Topology Optimization of Continuum Structures will appeal to researchers and graduate students working in structural design and optimization, and will also be of interest to civil and structural engineers, architects and mechanical engineers involved in creating innovative and efficient structures.

Topology Optimization for Additive Manufacturing Involving High-Cycle Fatigue

Author : Shyam Suresh
Publisher : Linköping University Electronic Press
ISBN 13 : 9179298508
Total Pages : 41 pages
Book Rating : 4.1/5 (792 download)

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Book Synopsis Topology Optimization for Additive Manufacturing Involving High-Cycle Fatigue by : Shyam Suresh

Download or read book Topology Optimization for Additive Manufacturing Involving High-Cycle Fatigue written by Shyam Suresh and published by Linköping University Electronic Press. This book was released on 2020-05-05 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive Manufacturing (AM) is gaining popularity in aerospace and automotive industries. This is a versatile manufacturing process, where highly complex structures are fabricated and together with topology optimization, a powerful design tool, it shares the property of providing a very large freedom in geometrical form. The main focus of this work is to introduce new developments of Topology Optimization (TO) for metal AM. The thesis consists of two parts. The first part introduces background and theory, where TO and adjoint sensitivity analysis are described. Furthermore, methodology used to identify surface layer and high-cycle fatigue are introduced. In the second part, three papers are appended, where the first paper presents the treatment of surface layer effects, while the second and third papers provide high-cycle fatigue constraint formulations. In Paper I, a TO method is introduced to account for surface layer effects, where different material properties are assigned to bulk and surface regions. In metal AM, the fabricated components in as-built surface conditions significantly affect mechanical properties, particularly fatigue properties. Furthermore, the components are generally in-homogeneous and have different microstructures in bulk regions compared to surface regions. We implement two density filters to account for surface effects, where the width of the surface layer is controlled by the second filter radius. 2-D and 3-D numerical examples are treated, where the structural stiffness is maximized for a limited mass. For Papers II and III, a high-cycle fatigue constraint is implemented in TO. A continuous-time approach is used to predict fatigue-damage. The model uses a moving endurance surface and the development of damage occurs only if the stress state lies outside the endurance surface. The model is applicable not only for isotropic materials (Paper II) but also for transversely isotropic material properties (Paper III). It is capable of handling arbitrary load histories, including non-proportional loads. The anisotropic model is applicable for additive manufacturing processes, where transverse isotropic properties are manifested not only in constitutive elastic response but also in fatigue properties. Two optimization problems are solved: In the first problem the structural mass is minimized subject to a fatigue constraint while the second problem deals with stiffness maximization subjected to a fatigue constraint and mass constraint. Several numerical examples are tested with arbitrary load histories.

Boundary Control in Multiphysics Topology Optimization for Advanced Manufacturing

Author : Cunfu Wang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (124 download)

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Book Synopsis Boundary Control in Multiphysics Topology Optimization for Advanced Manufacturing by : Cunfu Wang

Download or read book Boundary Control in Multiphysics Topology Optimization for Advanced Manufacturing written by Cunfu Wang and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topology optimization is a computational method that can find optimal material distribution within a given design domain to improve the desired performances of systems. In past three decades, density-based topology optimization has been widely applied to problems in structures, fluids, heat transfer, electromagnetic and multiphysics problems where complex and intricate shapes are often obtained from the optimization process. However, there is no explicit boundary involved in the density-based topology optimization. This fact leads to difficulties in problems requiring boundary information, such as controlling boundary slope to reduce support structures in additive manufacturing and imposing boundary loading that depends on topological layouts of the design. In this work, density gradient approaches are proposed to control boundary slope for additive manufacturing and impose design-dependent boundary loads in density-based topology optimization. The spatial gradient of density (or density gradient) enable us to implicitly control boundary since it is non-zero on the solid/void interface and vanishes elsewhere in the design domain. In the design for additive manufacturing(AM), we have used density gradient to control boundary slope for both self-support and surface roughness, optimize build orientation and parts simultaneously to reduce support structures, and find the optimal topological layout of supports for heat dissipation. By constraining the minimal boundary slope, support structures can be eliminated or reduced for AM, and thus material and post-processing costs are reduced; by constraining the maximal boundary slope, high surface roughness can be attained, and thus the heat transfer efficiency is increased. In this research, the boundary slope is controlled through constraints between the density gradient and the given build direction. These local constraints on boundary slope control are casted into two single global constraints through the Heaviside projection integral (HPI) of density gradient. While the HPI is differentiable to the build orientation, it allows us to find the optimal build orientation and topology simultaneously to reduce support structures in additive manufacturing. Furthermore, a variation of the HPI formulation has proven able to model the boundary-dependent heat flux from part to the supports during the additive manufacturing process. This fact enables us to optimize topological layouts of support structures for heat dissipation. Numerical examples on 2D and 3D heat conduction problems, linear elasticity problems and thermoelastic problems demonstrate the effectiveness and efficiency of the proposed formulations in controlling boundary slopes, finding the optimal build orientation and optimizing support structures for additive manufacturing. Experimental results from 3D printed metal parts confirm that our boundary slope based formulations are effective for controlling part self-support during printing and for affecting surface roughness of the printed parts. A density gradient approach is also proposed to topology optimization under design-dependent boundary loading. The design-dependent boundary loads are implicitly imposed through a volume integral of density gradient, which is justified by its connections to the smoothed boundary method for solving partial differential equations. During the optimization, density filtering, the Heaviside projection and loading refinement are combined to control the thickness of the loading interface and the number of elements within it for accuracy and efficiency. For problems with loads on certain subsets of the solid/void interfaces, an auxiliary density field is introduced to separate the loading and non-loading interfaces. Numerical examples on heat conduction, linear elasticity and coupled thermoelastic problems are presented to demonstrate the validity and efficacy of the proposed approach. The proposed approaches for boundary slope control and density-dependent boundary loading are applied to the design of thermophotonic materials for passive radiative cooling, which can cool below the ambient without the input of external energy. Density gradient based boundary loading is applied to impose design-dependent boundary convection. Density gradient based boundary slope constraints are also proposed to obtain layer-wise design for better manufacturability. Numerical examples on photonic problem and coupled thermophotonic problem are presented to demonstrate the validity of the proposed formulations.

Topology Optimization

Author : Martin Philip Bendsoe
Publisher : Springer Science & Business Media
ISBN 13 : 3662050862
Total Pages : 381 pages
Book Rating : 4.6/5 (62 download)

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Book Synopsis Topology Optimization by : Martin Philip Bendsoe

Download or read book Topology Optimization written by Martin Philip Bendsoe and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topology optimization method solves the basic enginee- ring problem of distributing a limited amount of material in a design space. The first edition of this book has become the standard text on optimal design which is concerned with the optimization of structural topology, shape and material. This edition, has been substantially revised and updated to reflect progress made in modelling and computational procedures. It also encompasses a comprehensive and unified description of the state-of-the-art of the so-called material distribution method, based on the use of mathematical programming and finite elements. Applications treated include not only structures but also materials and MEMS.

Coupled Topology Optimization and Process Simulation System for Laser Powder-bed Fusion Additive Manufacturing

Author : Zhidong Zhang
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (126 download)

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Book Synopsis Coupled Topology Optimization and Process Simulation System for Laser Powder-bed Fusion Additive Manufacturing by : Zhidong Zhang

Download or read book Coupled Topology Optimization and Process Simulation System for Laser Powder-bed Fusion Additive Manufacturing written by Zhidong Zhang and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive Manufacturing (AM), widely known as 3D printing, is a transformative method to industrial manufacturing, helping in creating lighter, stronger, smarter parts and systems. As one of the most important and commercially available AM processes, Laser Powder-bed Fusion (LPBF) can realize geometrically complex metallic parts by selectively melting layers of metallic powders. It is being used extensively in many fields, such as medical, aeronautical, etc.. As AM provides new design opportunities, topology optimization is ideal for AM, specifically LPBF, because it can be deployed to design high-performance structures and fully exploit the fabrication freedom provided by AM. However, there are still some challenges of printing parts in LPBF, such as porosity creation, low surface quality, residual stress, and deformation, which impede its widespread use in industrial applications. These challenges can be controlled by better understanding the influence of the process parameters used in the LPBF process. Nevertheless, relying exclusively on experimental efforts is expensive and time-consuming. Therefore, the LPBF process modeling can help in understanding the effects of the process parameters on the printed part quality. Furthermore, LPBF modeling can be coupled with topology optimization to produce parts with lower as-built deformation. In this work, a coupled topology optimization and process simulation system is proposed to deal with the challenges and utilize the opportunities of the LPBF process. This system involves two major aspects: Firstly, a 3-dimensional heat transfer model is developed to study the effect of process parameters on printed LPBF parts. The simulation results show good agreement with experimental measurements. The averaged error of melt pool width and depth are 2.9% and 7.3%, respectively. Secondly, an Inherent Strain Method (ISM)-based topology optimization model is proposed to reduce the deformation in LPBF parts. A parallel-computing framework of this model is used to optimize the support structures to reduce the as-built and after-cut deflections of printed parts. Experimental results show the framework can reduce the part deformation of over 60% and also material usage of over 50% compared to commercial support structures. Besides, the ISM model has also been employed in predicting the deflections of printed parts, and when compared to experimental results, excellent agreement is observed (average 6% error). Lastly, the parallel-computing framework can achieve considerable simulation acceleration.

Topology Optimization of Compliant Mechanisms

Author : Xianmin Zhang
Publisher : Springer
ISBN 13 : 9811304327
Total Pages : 202 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Topology Optimization of Compliant Mechanisms by : Xianmin Zhang

Download or read book Topology Optimization of Compliant Mechanisms written by Xianmin Zhang and published by Springer. This book was released on 2018-05-02 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers various topics regarding the design of compliant mechanisms using topology optimization that have attracted a great deal of attention in recent decades. After comprehensively describing state-of-the-art methods for designing compliant mechanisms, it provides a new topology optimization method for finding new flexure hinges. It then presents several attempts to obtain distributed compliant mechanisms using the topology optimization method. Further, it discusses a Jacobian-based topology optimization method for compliant parallel mechanisms, and introduces readers to the topology optimization of compliant mechanisms, taking into account geometrical nonlinearity and reliability. Providing a systematic method for topology optimization of flexure hinges, which are essential for designing compliant mechanisms, the book offers a valuable resource for all readers who are interested in designing compliant mechanism-based positioning stages. In addition, the methods for solving the de facto hinges in topology optimized compliant mechanisms will benefit all engineers seeking to design micro-electro-mechanical system (MEMS) structures.

Multiscale Structural Topology Optimization

Author : Liang Xia
Publisher : Elsevier
ISBN 13 : 0081011865
Total Pages : 186 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Multiscale Structural Topology Optimization by : Liang Xia

Download or read book Multiscale Structural Topology Optimization written by Liang Xia and published by Elsevier. This book was released on 2016-04-27 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiscale Structural Topology Optimization discusses the development of a multiscale design framework for topology optimization of multiscale nonlinear structures. With the intention to alleviate the heavy computational burden of the design framework, the authors present a POD-based adaptive surrogate model for the RVE solutions at the microscopic scale and make a step further towards the design of multiscale elastoviscoplastic structures. Various optimization methods for structural size, shape, and topology designs have been developed and widely employed in engineering applications. Topology optimization has been recognized as one of the most effective tools for least weight and performance design, especially in aeronautics and aerospace engineering. This book focuses on the simultaneous design of both macroscopic structure and microscopic materials. In this model, the material microstructures are optimized in response to the macroscopic solution, which results in the nonlinearity of the equilibrium problem of the interface of the two scales. The authors include a reduce database model from a set of numerical experiments in the space of effective strain. Presents the first attempts towards topology optimization design of nonlinear highly heterogeneous structures Helps with simultaneous design of the topologies of both macroscopic structure and microscopic materials Helps with development of computer codes for the designs of nonlinear structures and of materials with extreme constitutive properties Focuses on the simultaneous design of both macroscopic structure and microscopic materials Includes a reduce database model from a set of numerical experiments in the space of effective strain

Optimization of Structural Topology, Shape, and Material

Author : Martin P. Bendsoe
Publisher : Springer Science & Business Media
ISBN 13 : 3662031159
Total Pages : 278 pages
Book Rating : 4.6/5 (62 download)

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Book Synopsis Optimization of Structural Topology, Shape, and Material by : Martin P. Bendsoe

Download or read book Optimization of Structural Topology, Shape, and Material written by Martin P. Bendsoe and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past, the possibilities of structural optimization were restricted to an optimal choice of profiles and shape. Further improvement can be obtained by selecting appropriate advanced materials and by optimizing the topology, i.e. finding the best position and arrangement of structural elements within a construction. The optimization of structural topology permits the use of optimization algorithms at a very early stage of the design process. The method presented in this book has been developed by Martin Bendsoe in cooperation with other researchers and can be considered as one of the most effective approaches to the optimization of layout and material design.

This Place Sucks

Author : Alien Believer Publishing
Publisher :
ISBN 13 : 9781651840955
Total Pages : 100 pages
Book Rating : 4.8/5 (49 download)

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Book Synopsis This Place Sucks by : Alien Believer Publishing

Download or read book This Place Sucks written by Alien Believer Publishing and published by . This book was released on 2019-12-27 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Place Sucks Space Galaxy UFO Gift For UFO Extraterrestrial Believer is a Great Gift For Funny Alien Space Galaxy Lovers. Perfect For people Who believe in flying saucer, Alien Space Galaxy UFO, abduction with a Galaxy Alien.I Got Aliens in My Basement. Perfect Alien y Alien in the Basement Galaxy gift for who believe that alien exists and UFO conspiracy as scientific fact as they look at the night sky of planets, moon stars space and mars and Alien extraterrestrial believer.

Research and Applications in Structural Engineering, Mechanics and Computation

Author : Alphose Zingoni
Publisher : CRC Press
ISBN 13 : 1315850788
Total Pages : 960 pages
Book Rating : 4.3/5 (158 download)

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Book Synopsis Research and Applications in Structural Engineering, Mechanics and Computation by : Alphose Zingoni

Download or read book Research and Applications in Structural Engineering, Mechanics and Computation written by Alphose Zingoni and published by CRC Press. This book was released on 2013-08-15 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research and Applications in Structural Engineering, Mechanics and Computation contains the Proceedings of the Fifth International Conference on Structural Engineering, Mechanics and Computation (SEMC 2013, Cape Town, South Africa, 2-4 September 2013). Over 420 papers are featured. Many topics are covered, but the contributions may be seen to fall

The Impact of Additive Manufacturing Constraints and Design Objectives on Structural Topology Optimization

Author : Babin Dangal
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (143 download)

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Book Synopsis The Impact of Additive Manufacturing Constraints and Design Objectives on Structural Topology Optimization by : Babin Dangal

Download or read book The Impact of Additive Manufacturing Constraints and Design Objectives on Structural Topology Optimization written by Babin Dangal and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: To analyze the impact of different objective functions and additive manufacturing (AM) constraints on structural topology optimization, it is necessary to perform an in-depth comparative study. This analysis should consider specific structural design factors, such as compliance, volume, or stress minimization, and assess their effects on the topology optimization for AM. In addition, the inclusion of AM constraints can have a significant influence on various aspects, including optimal part geometry, part volume, support structure volume, and structural performance. Thus, it is essential to examine and compare these factors to determine the optimal part design for AM. This study focuses on comparing topology optimization results obtained using compliance, stress, or multi-objective minimization, with and without AM constraints. The comparative analysis is conducted in the study, utilizing four structural design examples: cantilever beam, bridge-shaped structure, L-shaped beam and connecting rod. The comparison results provide insights into the effects of build orientation, AM constraints such as overhang, and different design objectives on the structural topology optimization for AM.

Design of Thermal Structures Using Topology Optimization

Author : Joshua D. Deaton
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis Design of Thermal Structures Using Topology Optimization by : Joshua D. Deaton

Download or read book Design of Thermal Structures Using Topology Optimization written by Joshua D. Deaton and published by . This book was released on 2014 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of structures subjected to elevated temperature environments has long been an important area of study in the aerospace industry. This is especially true in the modern day, where new problems related to embedded engine aircraft and high temperature exhaust-washed structures present new structural design challenges not found in past applications. In this work, the response of a class of thermal structures whose responses are characterized by significant amounts of restrained expansion, to which exhaust-washed structures belong, are studied. To address the complex design challenges that become evident in these investigations, structural topology optimization is applied due to its unique ability to identify optimal material layout. Since conventional methods for topology optimization fail to generate effective designs in the presence of thermoelastic effects, new formulations for thermoelastic topology optimization are demonstrated. These include techniques for addressing the amount of reaction loading generated by a structural concept and methods for incorporating stress-based design criteria in topology optimization problems with design-dependent thermal loading. When taken together, the developments in this work provide a design technique in which stresses can be directly treated in thermal structures by identifying the proper arrangement of structural components in a thermal environment.