Open AccessIntegrated design of structure and anisotropic material based on the BESO method
Author(s) -
Xiaolei Yan,
Qiwang Xu,
Jingjie He,
Dengfeng Huang,
Xiaodong Huang
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/531/1/012046
Subject(s) - topology optimization , homogenization (climate) , topology (electrical circuits) , anisotropy , network topology , computer science , material design , material properties , connection (principal bundle) , optimal design , mathematical optimization , orientation (vector space) , materials science , structural engineering , mathematics , finite element method , geometry , composite material , engineering , physics , optics , biodiversity , ecology , combinatorics , machine learning , biology , operating system
An Integrated structural and material topology optimization method considering optimal material orientation is presented based the on bi-direction evolutionary structural optimization (BESO) method. It is assumed that the macrostructure is composed of uniform cellular material but with different orientation. The homogenization method is used to calculate the effective material properties which builds a connection between material and structure. The continuous material orientation design variables and the discrete topology design variables are treated hierarchically in an iteration. The principal stress method is adopted and embedded to determine the optimal material orientation, meanwhile the topologies of the macrostructure and its material microstructure are concurrently optimized by using the BESO method. Numerical examples are conducted to demonstrate the effectiveness of the proposed optimization algorithm.