超弹性可导向防撞垫设计

雷正保1,周伟正2,涂晓威2

振动与冲击 ›› 2021, Vol. 40 ›› Issue (10) : 35-40.

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (10) : 35-40.
论文

超弹性可导向防撞垫设计

  • 雷正保1,周伟正2,涂晓威2
作者信息 +

Design of hyper-elastic re-directive crash cushions

  • LEI Zhengbao1,ZHOU Weizheng2,TU Xiaowei2
Author information +
文章历史 +

摘要

基于耐撞性拓扑优化方法以及稳健性设计方法,设计出了一种高等级超弹性可导向防撞垫,可在实现轻量化要求的同时实现可导向防撞垫整体质量最优。以实现能量吸收最大化为优化设计目标,对防撞垫的吸能单元进行耐撞性拓扑优化分析,确定吸能单元的最优传力路径,提取构型清晰的吸能单元;对建立的可导向防撞垫有限元模型进行了碰撞安全性验证。将试验车辆的角度、速度、质量的不确定性作为噪声因子,基于稳健性设计方法,确定了可导向防撞垫吸能单元的最优尺寸。结果表明:耐撞性拓扑优化方法和稳健性设计方法行之有效,TS级超弹性可导向防撞垫能够满足现行评价标准要求。

Abstract

Based on the topological optimization of crashworthiness and robust design method, a high-level hyper-elastic re-directive crash cushion was designed, to realize the lightweight requirements and the overall quality optimization of the re-directive crash cushion.The objective of optimization design is the maximization of energy absorption, the energy absorption unit of the crash cushion was optimized by the topological analysis of crashworthiness, the optimal force transmission path of the energy absorption unit was determined, and then, the energy absorption unit with clear configuration was extracted.The collision safety was verified by using a finite element model of the re-directive crash cushion.Taking the uncertainties of angle, speed, and quality of the experimental vehicle as noise factors, and based on a robust design method, the optimal sizes of the re-directive crash cushion were determined.The results show that the proposed crashworthiness topology optimization and robust design method are effective, the TS class (100 km/h) hyper-elastic re-directive crash cushion can meet the requirements of the current evaluation standard.

关键词

拓扑优化 / 稳健性 / 可导向防撞垫 / 噪声因子

Key words

topology optimization / robustness / re-directive crash cushion / noise factor

引用本文

导出引用
雷正保1,周伟正2,涂晓威2. 超弹性可导向防撞垫设计[J]. 振动与冲击, 2021, 40(10): 35-40
LEI Zhengbao1,ZHOU Weizheng2,TU Xiaowei2. Design of hyper-elastic re-directive crash cushions[J]. Journal of Vibration and Shock, 2021, 40(10): 35-40

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