TY - JOUR
T1 - Optimal topology design of steel-concrete composite structures under stiffness and strength constraints
AU - Luo, Yangjun
AU - Wang, Michael Yu
AU - Zhou, Mingdong
AU - Deng, Zichen
PY - 2012/12
Y1 - 2012/12
N2 - This study presents a three-phase topology optimization model and an effective solution procedure to generate optimal material distributions for complex steel-concrete composite structures. The objective is to minimize the total material cost (or mass) while satisfying the specified structural stiffness requirements and concrete strength constraints. Based on the Drucker-Prager criterion for concrete yield behaviour, the extended power-law interpolation for material properties and a cosine-type relaxation scheme for Drucker-Prager stress constraints are adopted. An enhanced aggregation method is employed to efficiently treat the large number of stress constraints, and the optimal topology is obtained through a standard gradient-based search. Several examples are provided to demonstrate the capability of the proposed optimization method in automatically finding the reasonable composite layout of steel and concrete.
AB - This study presents a three-phase topology optimization model and an effective solution procedure to generate optimal material distributions for complex steel-concrete composite structures. The objective is to minimize the total material cost (or mass) while satisfying the specified structural stiffness requirements and concrete strength constraints. Based on the Drucker-Prager criterion for concrete yield behaviour, the extended power-law interpolation for material properties and a cosine-type relaxation scheme for Drucker-Prager stress constraints are adopted. An enhanced aggregation method is employed to efficiently treat the large number of stress constraints, and the optimal topology is obtained through a standard gradient-based search. Several examples are provided to demonstrate the capability of the proposed optimization method in automatically finding the reasonable composite layout of steel and concrete.
KW - Drucker-Prager criterion
KW - Enhanced aggregation method
KW - Steel-concrete composite structures
KW - Topology optimization
UR - http://www.scopus.com/inward/record.url?scp=84868207087&partnerID=8YFLogxK
U2 - 10.1016/j.compstruc.2012.09.007
DO - 10.1016/j.compstruc.2012.09.007
M3 - 文章
AN - SCOPUS:84868207087
SN - 0045-7949
VL - 112-113
SP - 433
EP - 444
JO - Computers and Structures
JF - Computers and Structures
ER -