具有不同诱导槽结构的薄壁圆管抗撞性优化

谭丽辉;谭洪武;毛志强;崔晓梅;;徐 涛

振动与冲击 ›› 2014, Vol. 33 ›› Issue (8) : 16-21.

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PDF(1130 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (8) : 16-21.
论文

具有不同诱导槽结构的薄壁圆管抗撞性优化

  • 谭丽辉1,2,谭洪武3,毛志强4 ,崔晓梅1,2 ,徐 涛1
作者信息 +

The crashworthiness design optimization of thin-walledcylinders with different inducing grooves

  • TAN Li-hui1,2, TAN Hong-wu3, MAO Zhi-qiang4,CUI Xiao-mei 1,2, XU Tao1

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摘要

在金属薄壁圆管(原模型)的基础上,分别引入不同形式的圆弧形诱导槽结构并以其为研究对象,建立以诱导槽半径、槽端距、槽间距为优化参数, 以比吸能和最大峰值碰撞力为评价指标的多目标优化模型。分析研究了诱导凹槽、凸槽及凸凹交替的诱导槽结构对薄壁构件吸能、最大峰值碰撞力的影响。采用有限元软件LS-DYNA得到不同几何参数模型的碰撞响应,结合径向基函数法构造近似函数,并采用理想点法进行优化设计,得出使结构最优时的不同形式的诱导槽半径、槽端距及槽间距,从而得到了不同形式的理想诱导槽优化结构。

Abstract

This paper took the metal thin-walled components as the investigation tool on the basis of different inducing grooves. The maximization of the Specific Energy Absorption (SEA) and the minimization of the maximum peak force ( ) were considered as the multiobjective functions, the radius of the inducing grooves|, distance between inducing grooves and free end, distance of inducing groovs were chosen as design variables. The optimization was based on the minimization of and the maximization of SEA. The objective functions were constructed based on the Radial Basis Function (RBF), the multiobjective optimization for the thin-walled with the different inducing grooves, which was presented by using the ideal point method, and considering the impact on the SEA and of the convex grooves, indentations, alternately convex grooves and indentations. After the optimization we can get the ideal indentations.



关键词

薄壁构件 / 比吸能 / 最大峰值碰撞力 / 抗撞性 / 诱导槽

Key words

thin-walled components / specific energy absorption (SEA) / maximum peak force ( ) / crashworthiness / inducing grooves

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谭丽辉;谭洪武;毛志强;崔晓梅;;徐 涛. 具有不同诱导槽结构的薄壁圆管抗撞性优化[J]. 振动与冲击, 2014, 33(8): 16-21
TAN Li-hui;TAN Hong-wu;MAO Zhi-qiang;CUI Xiao-mei;XU Tao. The crashworthiness design optimization of thin-walledcylinders with different inducing grooves [J]. Journal of Vibration and Shock, 2014, 33(8): 16-21

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