一种基于拓扑骨架分布的子结构划分方法OA

The topology optimization method based on traditional substructure partitioning is beneficial for solving the problems of material enrichment and unreasonable layout in engineering structure topology.However,its substructure partitioning relies too much on the experience and attempts of designers,which is time-consuming,labor-intensive,and inefficient.For this reason,this paper proposes a substructure division method based on topological skeleton distribution,which can quickly obtain a well-laid out substructure division.This method first obtains the skeleton distribution of the design optimization area through topology optimization calculation,and then maps the skeleton distribution to the original engineering structure to guide the division of substructures.The designable area is divided into a skeleton structure and other secondary substructures.Finally,the skeleton structure and its other secondary substructures achieve maximum overall stiffness under different volume ratio constraints.The method is applied to the cross joints to obtain three new configurations with good performance and structural beauty,which reduces the deadweight by 34.81％～36.68％,the maximum displacement by 5.61％～8.52％,and the maximum equivalent force by 26.95％～33.69％,respectively,and improves the optimization of the cross joints.The research results show that this method can not only directly and quickly partition reasonable substructures,improve topology optimization efficiency,but also obtain more optimized topology results and improve the quality of topology optimization.