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兵工学报 ›› 2015, Vol. 36 ›› Issue (6): 1061-1066.doi: 10.3969/j.issn.1000-1093.2015.06.014

• 论文 • 上一篇    下一篇

帕累托最优在车辆底部防护结构设计中的应用研究

魏然, 王显会, 周云波, 王良模, 郑雅丽   

  1. (南京理工大学 机械工程学院, 江苏 南京 210094)
  • 收稿日期:2014-09-09 修回日期:2014-09-09 上线日期:2015-08-03
  • 通讯作者: 魏然 E-mail:weirasiel@163.com
  • 作者简介:魏然(1987—),男,博士研究生
  • 基金资助:
    国家自然科学基金项目(51405232)

Application of Pareto Optimality in Protective Structure Design of Vehicle Underbody

WEI Ran, WANG Xian-hui, ZHOU Yun-bo, WANG Liang-mo, ZHENG Ya-li   

  1. (School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China)
  • Received:2014-09-09 Revised:2014-09-09 Online:2015-08-03
  • Contact: WEI Ran E-mail:weirasiel@163.com

摘要: 为了提升爆炸冲击环境下车辆的防护性能,针对其底部防护结构设计中大规模计算、强非线性和多优化目标的特点,利用多物质单元与流-固耦合算法仿真车辆的动态响应。通过灵敏度分析,筛选底部结构中钣金件的厚度、几何形状等设计参数,并利用实验设计建立该问题的数学优化模型,结合帕累托最优的多目标遗传算法,得到该优化问题的帕累托解集空间曲面和一个最优设计方案,该方案在不增加结构质量的情况下,能显著提高车辆底部防护性能。

关键词: 兵器科学与技术, 防护型车辆, 爆炸冲击波, 帕累托最优, 多目标优化, 标准边界交叉法

Abstract: The multi-objective optimization of vehicle bottom structure under landmine explosion is a mass computation, strong-nonlinearity and high dimension multi-objective optimization problem. The protective vehicle structure response is simulated based on combination of LAE and FSI methods. The thickness and geometry parameters of vehicle bottom structure are screened with sensitivity analysis. A response surface is built by employing the experimental design and regression analysis. Eventually, the Pareto optimality, normal boundary intersection and multi-objective optimization genetic algorithms are applied to get the Pareto optimal front and an ideal solution which could give a comprehensive consideration of the contradiction between lightweight and protection capability.

Key words: ordnance science and technology, protective vehicle, blast wave, Pareto optimality, multi-objective optimization, normal-boundary intersection

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