Study on Lightweight Design of 3-D Continuum Structure Based on Topology Optimization

Some key techniques are described on the bi-directional evolutionary structural optimization(BESO) algorithm of 3-D continuum structure stress optimization with volume constraints. A joint simulation framework is constructed based on BESO method and FEM (Finite Element Method). The framework can be used to realize the topology optimization for 3-D structure. An application case is studied on the topology optimization for the upright column of the heavy horizontal milling and boring machine, and get an optimized topology structure for a kind of 3-D hollow rectangle framework structure. Some critical model reconstruction principles after topology optimization, are put forward constructively, which include outcome-oriented, manufacturability, reliability and integration etc.