泡沫填充夹芯墙多胞结构的耐撞性多目标优化设计

文桂林1,2,孔祥正1,2,尹汉锋1,2,,肖久如2

振动与冲击 ›› 2015, Vol. 34 ›› Issue (5) : 115-121.

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (5) : 115-121.
论文

泡沫填充夹芯墙多胞结构的耐撞性多目标优化设计

  • 泡沫填充管由于其优秀的能量吸收性能引起越来越多的关注。根据对丝瓜结构的研究,提出一种与丝瓜横截面类似的泡沫填充夹芯墙多胞结构。基于非线性有限元软件LS-DYNA,建立此种泡沫填充夹芯墙多胞结构的轴压分析有限元模型。基于多项式代理模型,采用多目标粒子群优化算法对不同截面形状的多胞结构进行了优化设计。根据优化结果对不同结构的选择给出指导性意见,使结构在满足峰值力限制的情况下拥有最好的吸能特性。本文提出的新型结构在车辆工程及航空航天等领域具有很好的应用前景。
作者信息 +

Multiobjective crashworthiness optimization design of foam-filled sandwich wall multi-cell structures

  • Foam-filled tubes have gained more and more attention due to their excellent energy absorption capacity. According to the study of luffa structure, a kind of foam-filled sandwich wall multi-cell structures similar to the luffa cross-section was raised. Based on the nonlinear finite element code LS-DYNA, the axial crushing finite element model of the foam-filled sandwich wall multi-cell structures was established. Based on the polynomial surrogate model, the structures with different size were optimized by adopting multiobjective particle swarm optimization algorithm. Give the opinions on the choice of different structures according to the result of optimization, which makes the selected structure have the best energy absorption characteristics under the peak force constraint. The new type structure raised by this paper has a good application prospect in automotive, aerospace and other fields.
Author information +
文章历史 +

摘要

泡沫填充管由于其优秀的能量吸收性能引起越来越多的关注。根据对丝瓜结构的研究,提出一种与丝瓜横截面类似的泡沫填充夹芯墙多胞结构。基于非线性有限元软件LS-DYNA,建立此种泡沫填充夹芯墙多胞结构的轴压分析有限元模型。基于多项式代理模型,采用多目标粒子群优化算法对不同截面形状的多胞结构进行了优化设计。根据优化结果对不同结构的选择给出指导性意见,使结构在满足峰值力限制的情况下拥有最好的吸能特性。本文提出的新型结构在车辆工程及航空航天等领域具有很好的应用前景。

Abstract

Foam-filled tubes have gained more and more attention due to their excellent energy absorption capacity. According to the study of luffa structure, a kind of foam-filled sandwich wall multi-cell structures similar to the luffa cross-section was raised. Based on the nonlinear finite element code LS-DYNA, the axial crushing finite element model of the foam-filled sandwich wall multi-cell structures was established. Based on the polynomial surrogate model, the structures with different size were optimized by adopting multiobjective particle swarm optimization algorithm. Give the opinions on the choice of different structures according to the result of optimization, which makes the selected structure have the best energy absorption characteristics under the peak force constraint. The new type structure raised by this paper has a good application prospect in automotive, aerospace and other fields.

关键词

泡沫填充 / 丝瓜结构 / 耐撞性 / 多目标优化

Key words

Foam-filled / Luffa structure / Crashworthiness / Multiobjectie optimization

引用本文

导出引用
文桂林1,2,孔祥正1,2,尹汉锋1,2,,肖久如2. 泡沫填充夹芯墙多胞结构的耐撞性多目标优化设计[J]. 振动与冲击, 2015, 34(5): 115-121
WEN Gui-lin1,2,KONG Xiang-zheng1,2, YIN Han-feng1,2, XIAO Jiu-ru2. Multiobjective crashworthiness optimization design of foam-filled sandwich wall multi-cell structures[J]. Journal of Vibration and Shock, 2015, 34(5): 115-121

参考文献

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