首页 | 本学科首页   官方微博 | 高级检索  
     检索      

基于拓扑优化的车辆底部防护组件改进设计
引用本文:毕政,周云波,吴凯,李明星,孙晓旺.基于拓扑优化的车辆底部防护组件改进设计[J].爆炸与冲击,2021,41(4):043901-1-043901-11.
作者姓名:毕政  周云波  吴凯  李明星  孙晓旺
作者单位:南京理工大学机械工程学院,江苏 南京 210094
基金项目:国家自然科学基金(51405232%11802140)%中央高校基本科研业务费专项资金(30918011303)%道路交通安全公安部重点实验室开放基金(2018ZDSYSKFKT09)
摘    要:为提升车辆底部防护组件的抗爆性能,降低车身底板变形对车内乘员的威胁,基于混合自动元胞机法对防护组件中的加强梁进行拓扑优化设计,得到了加强梁的最佳材料分布形式,随后根据拓扑优化结果进行了工程诠释和重新设计。为了进一步提升防护组件的抗爆性能,采用多目标优化的方法对加强梁进行优化设计,以基板的挠度峰值、基板的最大动能和防护组件质量为优化目标,防护组件的质量为约束条件,以及梁的厚度、截面尺寸为设计变量,得出加强梁各参数组合的最优方案。结果表明,相比于初始设计,该方案在不增加结构质量的情况下,防护组件的抗爆性能得到显著提升,改进后基板的挠度峰值降低了5%,基板的最大动能降低了11.58%。

关 键 词:防护组件    抗爆炸冲击    拓扑优化    多目标优化
收稿时间:2020-05-11

Improved design of vehicle bottom protective components based on topology optimization
BI Zheng,ZHOU Yunbo,WU Kai,LI Mingxing,SUN Xiaowang.Improved design of vehicle bottom protective components based on topology optimization[J].Explosion and Shock Waves,2021,41(4):043901-1-043901-11.
Authors:BI Zheng  ZHOU Yunbo  WU Kai  LI Mingxing  SUN Xiaowang
Institution:School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
Abstract:In order to improve the anti-explosion performance of the bottom protective components of the vehicle and reduce the threat of the body floor deformation to the occupants in the vehicle, topology optimization was conducted based on hybrid cellular automation (HCA) to design the stiffening beams in the protective components, the best material distribution form of the stiffening beams was obtained, the topology optimization results was interpreted and then the stiffening beams was redesigned. In order to further improve the anti-explosion performance of the protective components, the multi-objective optimization method was used to optimize the design of the stiffening beams, the optimal scheme for the parameter combination of the beams was obtained by selecting the peak deflection of test plate, the maximum kinetic energy of test plate and the mass of the protective components as objectives, the mass of the protective components as constraint, the thickness and cross-sectional dimensions of the beams as design variables. The results show that, compared with the original design, the scheme increase the anti-explosion performance of the protective components without increasing the structural mass. After optimization the peak deflection of test plate is reduced by 5%, and the maximum kinetic energy of test plate is reduced by 11.58%.
Keywords:protective components  anti-explosion impact  topology optimization  multi-objective optimization
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《爆炸与冲击》浏览原始摘要信息
点击此处可从《爆炸与冲击》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号