关键词: 车架；多目标；拓扑优化；折衷规划

Abstract:

This paper presented a multi-objective topology optimization method for bus chassis frame, in which both the compliance and eigenfrequencies were regarded as static and dynamic optimization objectives.Based on the SIMP(solid isotropic material with penalization) method,compromise programming method was adopted to define objectives of multi-objective topology optimization and multi-stiffness topology optimization,mean frequency method was adopted to settle eigenfrequencies of free vibration optimization.This approach overcomes the shortcoming of single-objective optimization methods which can not simultaneously consider other objectives and suits to multi-objective topology optimization of continuum.

Key words: chassis frame;multi-objective;topology optimization;compromise programming