Topology Optimization of Continuum Combined Structures With Prestress
Fu Jianlin,Rong Jianhua,Yang Zhenxing
(Automobile and Mechatronic Engineering Department ,Changsha Science and Technology University, Changsha Hunan, 410076)

Abstract: Considering the prestress of beam structures, a set of stress sensitivity numbers for beam and plate structures are derived, where the structural element stress level is combined with the relative difference quotients, a set of optimum criteria for the combined topology optimization problem of continuum struc tures with size and topology variables is established, and a kind of new topology optimization procedure is formulated based on a bidirectional evolutionarys tructural optimization idea. The examples are provided to confirm the validity and effectiveness of the proposed method.
Keywords: prestress, combining structure, evolutionary structural optimization, topology optimization.