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Numerical Simulation Of The Flow Behavior And Breakthrough Phenomenon In Co Injection Molding
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Book Synopsis Numerical Simulation of the Flow Behavior and Breakthrough Phenomenon in Co-injection Molding by : Florin Ilinca
Download or read book Numerical Simulation of the Flow Behavior and Breakthrough Phenomenon in Co-injection Molding written by Florin Ilinca and published by . This book was released on 2007 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Investigation of the Flow Front Behavior in the Co-injection Molding Process by : Florin Ilinca
Download or read book Numerical Investigation of the Flow Front Behavior in the Co-injection Molding Process written by Florin Ilinca and published by . This book was released on 2004 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study on Material Distribution, Mechanical Properties, and Numerical Simulation in Co-injection Molding by : Yottha Srithep
Download or read book A Study on Material Distribution, Mechanical Properties, and Numerical Simulation in Co-injection Molding written by Yottha Srithep and published by . This book was released on 2008 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: In co-injection molding process, two different polymer melts are sequentially injected into a mold to form a part with a skin/core structure. Co-injection molding can be used among other applications for recycling, improving barrier and electrical properties. The basic characteristics of a co-injection molded product depend on the properties of the skin and core layers, and the skin/core volume ratio. This thesis presents a study of the effect of molding parameters on material distribution and mechanical properties of co-injection molded plates. The plates were molded with polypropylene(PP) and thermoplastic olefin(TPO) as skin and core. Four molding parameters-injection velocity, skin and core temperature, and core percent-were varied. Core percent was the most significant factor influencing core breakthrough. After the injection molding process reached steady state, molded samples were collected and cut to measure the core volume ratio using an optical microscope. Mechanical properties, such as flexural and impact strength show a good correlation with the core content. This thesis also compares the experimental results to numerical simulations using Moldflow Plastic Insight. Results for our simple mold show a good agreement between experimentals and simulations.
Download or read book Injection Molding written by Rong Zheng and published by Springer Science & Business Media. This book was released on 2011-06-21 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers fundamental principles and numerical methods relevant to the modeling of the injection molding process. As injection molding processing is related to rheology, mechanical and chemical engineering, polymer science and computational methods, and is a rapidly growing field, the book provides a multidisciplinary and comprehensive introduction to the subjects required for an understanding of the complex process. It addresses the up-to-date status of fundamental understanding and simulation technologies, without losing sight of still useful classical approaches. The main chapters of the book are devoted to the currently active fields of flow-induced crystallization and orientation evolution of fiber suspensions, respectively, followed by detailed discussion of their effects on mechanical property, shrinkage and warpage of injection-molded products. The level of the proposed book will be suitable for interested scientists, R&D engineers, application engineers, and graduate students in engineering.
Book Synopsis Experimental and Numerical Investigation of the Flow Front Behavior in the Co-injection Molding Process by : Florin Ilinca
Download or read book Experimental and Numerical Investigation of the Flow Front Behavior in the Co-injection Molding Process written by Florin Ilinca and published by . This book was released on 2002 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation and Experimental Validation of the Filling Stage in the Co-injection Molding Process by :
Download or read book Numerical Simulation and Experimental Validation of the Filling Stage in the Co-injection Molding Process written by and published by . This book was released on 2003 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of the Filling and Curing Stages in Reaction Injection Moulding by : Rui Igreja
Download or read book Numerical Simulation of the Filling and Curing Stages in Reaction Injection Moulding written by Rui Igreja and published by . This book was released on 2014-05-13 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master's Thesis from the year 2007 in the subject Engineering - Mechanical Engineering, language: English, abstract: (Thesis in pdf available here: http: //goo.gl/EZzlT6 and here: http: //hdl.handle.net/10773/2419) Commonly used methods for injection moulding simulation involve a considerable number of simplifications, leading to a significant reduction of the computational effort but, in some cases also to limitations. In this work, Reaction Injection Moulding (RIM) simulations are performed with a minimum of simplifications, by using the general purpose CFD software package Ansys CFX, designed for numerical simulation of fluid flow and heat and mass transfer. The Ansys CFX's homogeneous multiphase flow model, which is generally considered to be the appropriate choice for modelling free surface flows where the phases are completely stratified and the interface is well defined, is shown to be unable to model the filling process correctly. This problem is overcome through the implementation of the inhomogeneous model in combination with the free-slip boundary condition for the air phase. The cure reaction is implemented in the code as a transport equation for an additional scalar variable, with a source term. Various transient and advection schemes are tested to determine which ones produce the most accurate results. Finally, the mass conservation, momentum, cure and energy equations are implemented all together to simulate the simultaneous filling and curing processes present in the RIM process. The obtained numerical results show a good global accuracy when compared with other available numerical and experimental results, though considerably long computation times are required to perform the simulations.
Book Synopsis Conference Proceedings by : Society of Plastics Engineers. Technical Conference
Download or read book Conference Proceedings written by Society of Plastics Engineers. Technical Conference and published by . This book was released on 1983 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molding Simulation: Theory and Practice by : Maw-Ling Wang
Download or read book Molding Simulation: Theory and Practice written by Maw-Ling Wang and published by Carl Hanser Verlag GmbH Co KG. This book was released on 2018-06-11 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical introductory guide to injection molding simulation is aimed at both practicing engineers and students. It will help the reader to innovate and improve part design and molding processes, essential for efficient manufacturing. A user-friendly, case-study-based approach is applied, enhanced by many illustrations in full color. The book is conceptually divided into three parts: Chapters 1–5 introduce the fundamentals of injection molding, focusing the factors governing molding quality and how molding simulation methodology is developed. As they are essential to molding quality, the rheological, thermodynamic, thermal, mechanical, kinetic properties of plastics are fully elaborated in this part, as well as curing kinetics for thermoset plastics. Chapters 6–11 introduce CAE verification of design, a valuable tool for both part and mold designers toward avoiding molding problems in the design stage and to solve issues encountered in injection molding. This part covers design guidelines of part, gating, runner, and cooling channel systems. Temperature control in hot runner systems, prediction and control of warpage, and fiber orientation are also discussed. Chapters 12–17 introduce research and development in innovative molding, illustrating how CAE is applied to advanced molding techniques, including co-/bi-Injection molding, gas-/water-assisted injection molding, foam injection molding, powder injection molding, resin transfer molding, and integrated circuit packaging. The authors come from the creative simulation team at CoreTech System (Moldex3D), winner of the PPS James L. White Innovation Award 2015. Several CAE case study exercises for execution in the Moldex3D software are included to allow readers to practice what they have learned and test their understanding.
Book Synopsis Flow Analysis of Injection Molds by : Peter Kennedy
Download or read book Flow Analysis of Injection Molds written by Peter Kennedy and published by Carl Hanser Verlag GmbH Co KG. This book was released on 2013-04-04 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given the importance of injection molding as a process as well as the simulation industry that supports it, there was a need for a book that deals solely with the modeling and simulation of injection molding. This book meets that need. The modeling and simulation details of filling, packing, residual stress, shrinkage, and warpage of amorphous, semi-crystalline, and fiber-filled materials are described. This book is essential for simulation software users, as well as for graduate students and researchers who are interested in enhancing simulation. And for the specialist, numerous appendices provide detailed information on the topics discussed in the chapters. Contents: Part 1 The Current State of Simulation: Introduction, Stress and Strain in Fluid Mechanics, Material Properties of Polymers, Governing Equations, Approximations for Injection Molding, Numerical Methods for Solution Part 2 Improving Molding Simulation: Improved Fiber Orientation Modeling, Improved Mechanical Property Modeling, Long Fiber-Filled Materials, Crystallization, Effects of Crystallizations on Rheology and Thermal Properties, Colorant Effects, Prediction of Post-Molding Shrinkage and Warpage, Additional Issues of Injection-Molding Simulation, Epilogue Appendices: History of Injection-Molding Simulation, Tensor Notation, Derivation of Fiber Evolution Equations, Dimensional Analysis of Governing Equations, The Finite Difference Method, The Finite Element Method, Numerical Methods for the 2.5D Approximation, Three-Dimensional FEM for Mold Filling Analysis, Level Set Method, Full Form of Mori-Tanaka Model
Book Synopsis Three Dimensional Numerical Simulation of Gas-assisted and Co-injection Molding by : Florin Ilinca
Download or read book Three Dimensional Numerical Simulation of Gas-assisted and Co-injection Molding written by Florin Ilinca and published by . This book was released on 2004 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Injection Moulding by : Cox Sitters
Download or read book Numerical Simulation of Injection Moulding written by Cox Sitters and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modelling and Simulation for Micro Injection Molding Process by : Lei Xie
Download or read book Modelling and Simulation for Micro Injection Molding Process written by Lei Xie and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Multi-material Injection Molding with Application to Gas-assisted and Co-ijection Molding by : Florin Ilinca
Download or read book Numerical Simulation of Multi-material Injection Molding with Application to Gas-assisted and Co-ijection Molding written by Florin Ilinca and published by . This book was released on 2001 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulation in Injection Molding by : Thomas Schröder
Download or read book Simulation in Injection Molding written by Thomas Schröder and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In plastics technology, a wide variety of computer programs are used for the design and optimization of molded plastic parts and for mold design. These programs calculate the filling process, the holding pressure phase, and the cooling phase of the molded part in the mold. The results include, for example, pressures, temperatures, weld/knit lines, and voids. The shrinkage and warpage behavior of the molded part can also be predicted. Understanding and interpreting these simulation results is not trivial, although they are colorful representations with numerical values. Regardless of whether one has many years of experience as a designer, a mold maker, or an injection molder, or whether one is in training or studying, simulation is becoming increasingly important. For this reason, experts who know how to use these programs correctly are increasingly sought after in the market. This book is intended to expand readers' specialist knowledge in the field of simulation, thereby increasing their ability to recognize and avoid molding errors at an early stage. Readers will also learn to draw the right conclusions from the simulation results and develop their own solutions.
Book Synopsis Numerical Simulation of Injection Moulding by : Cornelius Wilhelmus Maria Sitters
Download or read book Numerical Simulation of Injection Moulding written by Cornelius Wilhelmus Maria Sitters and published by . This book was released on 1988 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of the Flow and Fiber Orientation in Reinforced Thermoplastic Injection Molded Products by :
Download or read book Numerical Simulation of the Flow and Fiber Orientation in Reinforced Thermoplastic Injection Molded Products written by and published by . This book was released on 1997 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
