TY - JOUR
T1 - Concurrent topological design of composite structures and the underlying multi-phase materials
AU - Da, D. C.
AU - Cui, X. Y.
AU - Long, K.
AU - Li, G. Y.
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2017/1/15
Y1 - 2017/1/15
N2 - This paper presents a concurrent topology optimization approach for simultaneous design of composite structures and their periodic material microstructures with three or more phases. The effective properties of multi-phase materials are obtained via homogenization technique which serves as a bridge of the finite element models of the macrostructure and the material microstructure. The base materials of periodic microstructures used in each phase of the macrostructure are divided into several groups and sensitivity analysis are carried out on them one by one. Meanwhile, the sensitivity number at the macrostructure is derived which is coupled with the designed material properties. Then, the composite configurations of material microstructures and macrostructures are inversely optimized concurrently based on the bi-directional evolutionary structural optimization (BESO) algorithm. Several 2D and 3D numerical examples are presented to demonstrate the effectiveness of proposed design approach.
AB - This paper presents a concurrent topology optimization approach for simultaneous design of composite structures and their periodic material microstructures with three or more phases. The effective properties of multi-phase materials are obtained via homogenization technique which serves as a bridge of the finite element models of the macrostructure and the material microstructure. The base materials of periodic microstructures used in each phase of the macrostructure are divided into several groups and sensitivity analysis are carried out on them one by one. Meanwhile, the sensitivity number at the macrostructure is derived which is coupled with the designed material properties. Then, the composite configurations of material microstructures and macrostructures are inversely optimized concurrently based on the bi-directional evolutionary structural optimization (BESO) algorithm. Several 2D and 3D numerical examples are presented to demonstrate the effectiveness of proposed design approach.
KW - Bidirectional evolutionary structural optimization (BESO)
KW - Concurrent design
KW - Inverse homogenization
KW - Multi-material topology optimization
UR - http://www.scopus.com/inward/record.url?scp=84994876875&partnerID=8YFLogxK
U2 - 10.1016/j.compstruc.2016.10.006
DO - 10.1016/j.compstruc.2016.10.006
M3 - Article
AN - SCOPUS:84994876875
SN - 0045-7949
VL - 179
SP - 1
EP - 14
JO - Computers and Structures
JF - Computers and Structures
ER -