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国际机械中心“先进结构与复合材料并发多尺度分析”系列学术讲座(4)

发布时间:2022-12-08 点击数:

Direct FE2– Concurrent multiscale and multiphysics modelling with 

commercial finite element codes

讲座人Prof. Vincent B. C. Tan, National University of Singapore

主持人:Prof. Pei LI, Xi'an Jiaotong University

Vincent Tan is an Associate Professor and Deputy Head at the Department of Mechanical Engineering, National University of Singapore. After obtaining his BEng and MEng in Mechanical Engineering from the National University of Singapore, he pursued his PhD in Mechanical Engineering at Northwestern University, USA.

Currently, his research interests are in computational homogenization and multiscale modelling, computational modelling, bioinspired composites, failure of composite materials, impact mechanics and ballistics. His research has been funded by both industrial and research agency grants, including US Air Force Office of Scientific Research, Agency for Science, Technology and Research, Defence Science Organization, Ministry of Education, Ministry of Defence, Vestas, and Airbus. He serves on the editorial boards of several journals, includingComposites Part B,Mechanics of Materials, andInternational Journal of Applied Mechanics. He is a Vice President and Fellow of the Association for Computational Mechanics (Singapore) and is a General Council Member of both the International Association of Computational Mechanics and Asian Pacific Association for Computational Mechanics. He co-chaired the 23rd International Workshop on Computational Mechanics of Materials in Singapore (2013) and has served on the scientific advisory committees of several international conferences. A winner of multiple teaching awards at both the Faculty and University levels, he teaches modules on mechanics, mathematics, and numerical methods.

讲座简介

FE2is an attractive approach to multiscale finite element analysis (FEA) of multiphasic materials because it is often difficult to obtain accurate homogenized constitutive relations due to complex microstructures and the nonlinear interactions among the constituents of such materials. Homogenized properties are obtained through FEA of representative volume elements (RVE) where the different phases of the heterogeneous material are explicitly modelled. However, the conventional implementation of FE2requires familiarity with computational homogenization and significant in-house coding. The microscale RVE calculations need to be carried out in tandem with the FEA of the macroscale structure with constant information exchange between the micro and macro scale simulations.

This talk presents a much simpler implementation - Direct FE2- that enables FE2to be carried out on commercial FE codes with only two pre-processing steps. It will be shown that anyone who has some familiarity with FEA of RVEs or unit cells can readily carry out concurrent multiscale modelling with Direct FE2on commercial FE codes. By leveraging the capabilities of commercial codes, multiphysics analyses can be easily incorporated. Example problems include static analysis of cantilever heterogenous beams with geometric and material nonlinearities, thermomechanical analysis, and transient analysis. Direct FE2for beam and plate elements will also be introduced.

讲座时间:2022/12/13 14:30-15:30 #腾讯会议:359-623-312

腾讯会议链接: https://meeting.tencent.com/dm/F3T3VJbHDuJA

地址:陕西省西安市咸宁西路28号 邮编:710049
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