基于 A ltair-O ptiS truct 的客车车身结构拓扑优化设计

摘要

The purpose of this paper is to achieve lightweight design through the topology optimization of coach body structure by Al-tair-OptiStruct software .Firstly ,based on the maximum principle of optimization space ,the topology optimization area was esta-blished .Then the topology optimization was conducted under the bending condition and bending torsion condition .Finally ,the per-formance of the optimized structure was verified .Results show that the performance of structure has been improved and the weight of the body has decreased by 3 .8% after topology optimization .In conclusion ,the result of the topology optimization can provide reference for coach body lightweight design .%采用Altair-OptiStruct对某型客车车身结构进行拓扑优化计算 ,实现客车车身结构轻量化设计.根据优化空间最大化的原则 ,建立车身拓扑优化模型 ,然后分别对弯曲工况和弯扭组合工况进行车身结构拓扑计算 ,最后对新的车身结构性能进行验证评价.结果表明 :拓扑优化后的车身骨架性能得到了提高、质量减少3.8% ,优化结果可为客车轻量化设计提供参考.