强度约束近似模型下后副车架轻量化优化

来源 :第19届亚太汽车工程年会暨2017中国汽车工程学会年会 | 被引量 : 0次 | 上传用户：wanming_home

【摘要】

：

对某款车型后副车架结构进行5个典型极限工况的多体动力学分析,获得了各硬点载荷数据作为结构优化载荷边界条件.进行了强度,刚度和自由模态分析,得到动静态性能指标.进行了试验设计,获取了样本点数据构造响应面近似模型,应用NSGA-II算法,计算近似模型得到优化的板厚尺寸组合,最后优化方案减重5.6％.对板厚优化方案验证了强度,自由模态和疲劳耐久性分析.分析结果表明,优化的后副车架结构完全满足动静态性能要

【作者】

：

张勤兰凤崇陈吉清梁礼光

【机构】

：

华南理工大学机械与汽车工程学院;广东省汽车工程重点实验室

【出处】

：

第19届亚太汽车工程年会暨2017中国汽车工程学会年会

【发表日期】

：

2017年7期

【关键词】

：

汽车后副车架结构轻量化拓扑优化强度约束近似模型

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强度约束近似模型下后副车架轻量化优化

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