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Design Of Concrete Slab Panels Using The Finite Element Method And Mathematical Programming
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Book Synopsis Design of concrete slab panels using the finite element method and mathematical programming by :
Download or read book Design of concrete slab panels using the finite element method and mathematical programming written by and published by . This book was released on 1906 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Neste trabalho apresenta-se ferramentas computacionais para o projeto de lajes maciças de concreto armado. O projeto de lajes é feito utilizando-se uma análise elástica, elasto-plástica perfeita, um dimensionamento ótimo utilizando programação matemática e um projeto pela análise plástica. O projeto convencional de lajes de concreto armado tem sido feito a partir de esforços solicitantes determinados pela hipótese de comportamento linear elástico do material. Utilizando-se as ferramentas computacionais desenvolvidas neste trabalho é proposto um procedimento de projeto de lajes maciças de concreto armado que utiliza esforçossolicitantes obtidos através de uma análise elasto-plástica perfeita desenvolvida pelo método dos elementos finitos. O dimensionamento das armaduras ortogonais, positivas e negativas, em cada ponto da laje é feito de modo a atender aos critérios de resistência definidos em função dos momentos de flexão e de torção e de maneira a se ter o menor consumo de aço. Os estados limites de utilização correspondentes à flecha da laje e à abertura de fissuras também são considerados no projeto. A análise elástica e elasto-plástica perfeita das lajes, descritas pelo seu plano médio e discretizadas pelo método dos elementos finitos, são feitas em regime de pequenos deslocamentos com formulação consistente em deslocamentos. Na análise elasto-plástica perfeita é utilizado o algoritmo de Newton-Raphson para solução das equações de equilíbrio a nível global da estrutura. As relações da Teoria da Plasticidade são resolvidas a nível local, ou seja, para cada ponto de Gauss da estrutura discretizada. O problema de retorno das tensõesna análise elasto-plástica perfeita é formulado como um problema de Programação Matemática (PM). O Método dos Pontos Interiores proposto por Herskovits (HERSKOVITS,1995) é utilizado como algoritmo de retorno das tensões na análise elasto-plástica perfeita.
Book Synopsis Finite Element Analysis of Prestressed Concrete Structures Using Post-Tensioning Steel by : Yu Huang
Download or read book Finite Element Analysis of Prestressed Concrete Structures Using Post-Tensioning Steel written by Yu Huang and published by Cambridge Scholars Publishing. This book was released on 2020-05-28 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details the theory and applications of finite element (FE) modeling of post-tensioned (PT) concrete structures, and provides the updated MATLAB code (as of 2019). The challenge of modeling PT prestressed concrete structures lies in the treatment of the interface between the concrete and prestressing tendons. Using MATLAB, this study develops an innovative nonlinear FE formulation which incorporates contact techniques and engineering elements to considerably reduce the need of computational power. This FE formulation has the ability to simulate different PT frame systems with fully bonded, fully unbonded or partially bonded tendons, as well as actual sliding behavior and frictional effects in the tendons. It also allows for the accurate simulation of anchor seating loss.
Book Synopsis Finite Element Design of Concrete Structures by : Guenter Axel Rombach
Download or read book Finite Element Design of Concrete Structures written by Guenter Axel Rombach and published by Thomas Telford. This book was released on 2004 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Finite Element Design of Concrete Structures: practical problems and their solutions the author addresses this blind belief in computer results by offering a useful critique that important details are overlooked due to the flood of information from the output of computer calculations. Indeed, errors in the numerical model may lead in extreme cases to structural failures as the collapse of the so-called Sleipner platform has demonstrated.
Book Synopsis A Finite Element Approach to Reinforced Concrete Slab Design by : James B. Deaton
Download or read book A Finite Element Approach to Reinforced Concrete Slab Design written by James B. Deaton and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was the development of a procedure in GT STRUDL to design reinforced concrete flat plate systems based on the results of finite element analysis. The current state-of-practice of reinforced concrete flat plate design was reviewed, including the ACI direct design and equivalent frame techniques, the yield line method, and the strip design method. The principles of these methods along with a critical evaluation of their applicability and limitations were presented as motivation for a finite element based design procedure. Additionally, the current state-of-the-art of flat plate design based on finite element results was presented, along with various flat plate modeling techniques. Design methodologies studied included the Wood and Armer approach, based on element stress resultants, and the resultant force approach, based on element forces. A flat plate design procedure based on the element force approach was embodied in the DESIGN SLAB command, which was implemented in GT STRUDL. The DESIGN SLAB command provides the user the ability to design a slab section by specifying a cut definition and several optional design parameters. The procedure determines all nodes and elements along the cut, computes the resultant moment design envelope acting on the cross-section, and designs the slab for flexure in accordance with provisions of ACI 318-02. Design examples presented include single-panel flat plate systems with various support conditions as well as multi-panel systems with regular and irregular column spacing. These examples allowed for critical comparison with results from experimental studies and currently applied design methods in order to determine the applicability of the implemented procedure. The DESIGN SLAB command was shown to produce design moments in agreement with experimental data as well as conventional design techniques for regular configurations. The examples additionally showed that when cuts were not oriented orthogonally to the directions of principle bending, resulting designs based on element forces could significantly under-reinforce the cross-section due to significant torsional effects.
Book Synopsis Computational Concrete Structures Technology by : Zdeněk Bittnar
Download or read book Computational Concrete Structures Technology written by Zdeněk Bittnar and published by . This book was released on 2000 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains a selection of papers that were presented at The Fifth International Conference on Computational Structures Technology and The Second International Conference on Engineering Computational Technology, which were held in Leuven, Belgium from 6-8 September 2000.
Book Synopsis Mathematical Programming Methods in Structural Plasticity by : D. Lloyd Smith
Download or read book Mathematical Programming Methods in Structural Plasticity written by D. Lloyd Smith and published by Springer Science & Business Media. This book was released on 1990-05-18 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Civil engineering structures tend to be fabricated from materials that respond elastically at normal levels of loading. Most such materials, however, would exhibit a marked and ductile inelasticity if the structure were overloaded by accident or by some improbable but naturally occuring phenomeon. Indeed, the very presence of such ductility constitutes an important safety provision for large-scale constructions where human life is at risk. In the comprehensive evaluation of safety in structural design, it is therefore unrealistic not to consider the effects of ductility. This book sets out to show that the bringing together of the theory and methods of mathematical programming with the mathematical theory of plasticity furnishes a model which has a unifying theoretical nature and is entirely representative of observed structural behaviour. The contents of the book provide a review of the relevant aspects of mathematical programming and plasticity theory, together with a detailed presentation of the most interesting and potentially useful applications in both framed and continuum structures: ultimate strength and elastoplastic deformability; shakedown and practical upper bounds on deformation measures; evolutive dynamic response; large displacements and instability; stochastic and fuzzy programming for representing uncertainty in ultimate strength calculations. Besides providing a ready fund of computational algorithms, mathematical programming invests applications in mechanics with a refined mathematical formalism, rich in fundamental theorems, which often gives addi- tional insight into known results and occasionally lead to new ones. In addition to its obvious practical utility, the educational value of the material thoroughly befits a university discipline.
Book Synopsis Computer-Aided Structural Engineering (CASE) Project. A Case Project Study of Finite Element Analysis of Concrete Flat Slabs by : David Raisanen
Download or read book Computer-Aided Structural Engineering (CASE) Project. A Case Project Study of Finite Element Analysis of Concrete Flat Slabs written by David Raisanen and published by . This book was released on 1987 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: The is a study aimed at providing guidance for the use of finite element analysis programs. As part of the Computer-Aided Structural Engineering (CASE) Committee study, it focuses on techniques for concrete flat slabs. With a purpose of developing criteria for finite element analysis of flat slab floors, this report has two objectives. To compare methods for the most acceptable yield and to apply these guidelines to the active design problem requires that this report include element selection, initial assumptions, comparisons of verification study, results, discussion of results, conclusions, and recommendations using the finite element methods. A powerhouse erection bay floor slab was selected for the problem solutions, with the GTSTRUDL program's IPBQQ element the only one suited to this problem. Keywords: Computer-aided design, Concrete slabs, Flooring, Concrete, Finite element method.
Book Synopsis Advanced Techniques in the Optimum Design of Structures by : Santiago Hernández
Download or read book Advanced Techniques in the Optimum Design of Structures written by Santiago Hernández and published by Computational Mechanics. This book was released on 1993 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :fib Fédération internationale du béton Publisher :fib Fédération internationale du béton ISBN 13 :2883940851 Total Pages :3 pages Book Rating :4.8/5 (839 download)
Book Synopsis Practitioners' Guide to Finite Element Modelling of Reinforced Concrete Structures by : fib Fédération internationale du béton
Download or read book Practitioners' Guide to Finite Element Modelling of Reinforced Concrete Structures written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2008-01-01 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-linear computer analysis methods have seen remarkable advancement in the last half-century. The state-of-the-art in non-linear finite element analysis of reinforced concrete has progressed to the point where such procedures are close to being practical, every-day tools for design office engineers. Non-linear computer analysis procedures can be used to provide reliable assessments of the strength and integrity of damaged or deteriorated structures, or of structures built to previous codes, standards or practices deemed to be deficient today. They can serve as valuable tools in assessing the expected behaviour from retrofitted structures, or in investigating and rationally selecting amongst various repair alternatives. fib Bulletin 45 provides an overview of current concepts and techniques relating to computer-based finite element modelling of structural concrete. It summarises the basic knowledge required for use of nonlinear analysis methods as applied to practical design, construction and maintenance of concrete structures, and attempts to provide a diverse and balanced portrayal of the current technical knowledge, recognizing that there are often competing and conflicting viewpoints. This report does not give advice on picking one model over another but, rather, provides guidance to designers on how to use existing and future models as tools in design practice, in benchmarking of their models against established and reliable test data and in selecting an appropriate safety factor as well as recognising various pitfalls. fib Bulletin 45 is intended for practicing engineers, and therefore focuses more on practical application and less on the subtleties of constitutive modelling.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1976 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Analysis of Prestressed Concrete Structures Using Post-Tensioning Steel by : Yu Huang
Download or read book Finite Element Analysis of Prestressed Concrete Structures Using Post-Tensioning Steel written by Yu Huang and published by Cambridge Scholars Publishing. This book was released on 2020-02 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details the theory and applications of finite element (FE) modeling of post-tensioned (PT) concrete structures, and provides the updated MATLAB code (as of 2019). The challenge of modeling PT prestressed concrete structures lies in the treatment of the interface between the concrete and prestressing tendons. Using MATLAB, this study develops an innovative nonlinear FE formulation which incorporates contact techniques and engineering elements to considerably reduce the need of computational power. This FE formulation has the ability to simulate different PT frame systems with fully bonded, fully unbonded or partially bonded tendons, as well as actual sliding behavior and frictional effects in the tendons. It also allows for the accurate simulation of anchor seating loss.
Book Synopsis Finite Element Analysis of Reinforced Concrete Structures 2003 by : Laura N. Lowes
Download or read book Finite Element Analysis of Reinforced Concrete Structures 2003 written by Laura N. Lowes and published by . This book was released on 2006 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developments in Analysis and Design Using Finite Element Methods by : B. Kumar
Download or read book Developments in Analysis and Design Using Finite Element Methods written by B. Kumar and published by . This book was released on 1999 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains a selection of papers presented at The Seventh International Conference on Civil and Structural Engineering and The Fifth International Conference on the Applications of Artificial Intelligence to Civil and Structural Engineering, held concurrently from 13-15 September 1999, at Oxford, England.
Book Synopsis How to design reinforced concrete flat slabs using finite element analysis by : O. Brooker
Download or read book How to design reinforced concrete flat slabs using finite element analysis written by O. Brooker and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces Finite Element (FE) methods, explains successful concrete modelling and interpretation of results. Also highlights the benefits, and some of the common pitfalls of FE analysis, and gives guidance on best practice.
Book Synopsis Additional Finite Element Method for Analysis of Reinforced Concrete Structures at Limit States by : Anna Ermakova
Download or read book Additional Finite Element Method for Analysis of Reinforced Concrete Structures at Limit States written by Anna Ermakova and published by Bokforlaget Efron & Dotter AB. This book was released on 2016-04-04 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presents the theoretical basis of Additional Finite Element Me-thod (AFEM), which is a variant of the Finite Element Method (FEM) for analy-sis of reinforced concrete structures at limit state. AFEM adds to the traditional sequence of problem by FEM the units of the two well-known methods of the structural design: method of additional loads and limit state method. The prob-lem is solved by introduction of ideal failure models and additional design dia-grams formed from additional finite elements, where each AFE describes the limit state reached by the main element. The main relations defining the proper-ties of AFEs as well as the examples of the use of Additional Finite Element Me-thod for analysis of reinforced concrete structures at limit state are given in the work too.
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Bibliography by : Gerard De Vries
Download or read book Finite Element Bibliography written by Gerard De Vries and published by Springer. This book was released on 1976-12 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thjs bibliography had its inception in 1967, when the compilers first attempted a comprehensive cov erage of the finite element literature using both manual and computer-based retrieval. Initially, the data base was stored on a card index, but this was subsequently transferred to punched cards and magnetic tape. Computer processing was adopted at an early stage to derive the three index formats from the data base. Over the subsequent years, several versions of the bibliography were produced, with two of these being made available in a report form to other researchers. From the widespread interest in these documents, it became evident that there was a need for a commercially-available comprehensive bibliography in this area. A major effort was undertaken to revise, update, and extend the data base, resulting in this present volume. The bibliography covers the period 1956-1975 primarily, although some earlier publications of histori cal interest are included. The citations are not restricted to the English language and documents are listed in many languages and from diverse places of origin. All publication formats were accepted, so that references will be found to books, monographs, journal papers and articles, theses, dissertations, reports, surveys, and the like.
