| 基于拓扑优化的汽车前纵梁耐撞性设计 |
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| 引用本文： | 曹立波,宋慧斌,武和全,刘亚飞. 基于拓扑优化的汽车前纵梁耐撞性设计[J]. 中国机械工程, 2016, 27(6): 827-832 |
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| 作者姓名： | 曹立波 宋慧斌 武和全 刘亚飞 |
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| 作者单位： | 1.湖南大学汽车车身先进设计制造国家重点实验室，长沙，4100822.长沙理工大学工程车辆轻量化与可靠性技术湖南省高校重点实验室，长沙，410114 |
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| 基金项目： | 国家自然科学基金资助项目(51405035)；湖南省自然科学基金资助项目（2015JJ6003）；湖南大学汽车车身先进设计制造国家重点实验开放基金资助项目（31375006） |
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| 摘 要： | 结合静态和动态拓扑优化方法对汽车前纵梁进行耐撞性设计，通过静态拓扑优化方法分别获得前纵梁在轴向刚度最大和侧向刚度最大时的结构形式，通过动态拓扑优化方法获得前纵梁具有最大吸能时的结构形式。对拓扑优化结果进行分析，综合考虑前纵梁的轴向刚度、侧向刚度和吸能特性，最终确定前纵梁的最佳截面形式与诱导结构的尺寸和位置。优化前后前纵梁的吸能特性对比结果表明，拓扑优化使前纵梁的耐撞性能有一定的提高。
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| 关 键 词： | 变密度法 静态拓扑优化 动态拓扑优化 前纵梁 |
Crashworthiness Design of Automotive Front Rail Using Topology Optimization Method |
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| Cao Libo,Song Huibin,Wu Hequan,Liu Yafei. Crashworthiness Design of Automotive Front Rail Using Topology Optimization Method[J]. China Mechanical Engineering, 2016, 27(6): 827-832 |
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| Authors: | Cao Libo Song Huibin Wu Hequan Liu Yafei |
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| Affiliation: | 1.State Key Laboratory of Advanced Desing and Manufacture for Vehicle Body,Hunan University, Changsha, 4100822.Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle,College of Hunan Province，Changsha University of Science& Technology,Changsha，410114 |
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| Abstract: | Based on static and dynamic topology optimization. the crashworthiness of automotive front rail was designed.A maximum axial stiffness and a maximum side stiffness of front rail structure form were obtainted through static topology optimization. A maximum energy absorption of front rail structure form was obtained through dynamic topology optimization. Through analyzing the topology optimization results and comprehensively considering the axial stiffness, the lateral stiffness and energy absorption characteristics, the optimal cross section form and the induced-structure,s size and location of front rail was obtained. The results obtained by constrastive analyses show that the frontal rail crashworthiness is improved. |
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| Keywords: | variable density approach static topology optimization dynamic topology optimization front rail |
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