带有圆弧形凸槽金属薄壁圆管抗撞性优化设计

谭丽辉;徐 涛;张炜;崔晓梅;;赵世佳

振动与冲击 ›› 2013, Vol. 32 ›› Issue (21) : 80-84.

PDF(1476 KB)
PDF(1476 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (21) : 80-84.
论文

带有圆弧形凸槽金属薄壁圆管抗撞性优化设计

  • 谭丽辉1,2,徐 涛1,张炜1,崔晓梅1,2 ,赵世佳1
作者信息 +

The Crashworthiness design optimization of metal thin-walledcylinders with convex grooves

  • Tan Lihui1,2, Xu Tao1, Zhang Wei 1, Cui Xiaomei 1,2, Zhao Shijia1

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摘要

在金属薄壁圆管(原模型)上设置圆弧形凸槽诱导结构并以其为研究对象,建立以凸槽个数及其半径为设计变量, 以比吸能(SEA)最大化和最大峰值碰撞力( )最小化的多目标优化模型。在保证不影响薄壁构件吸能能力的情况下,通过对其结构的优化达到最大峰值碰撞力最小化的目的。采用有限元软件LS-DYNA得到不同几何参数模型的碰撞信息,结合径向基函数法构造近似函数,并采用理想点法求解多目标优化问题。分析了凸槽个数和半径对薄壁构件的比吸能和最大峰值碰撞力的影响,得到了理想的优化模型,为进一步研究实际吸能元件奠定基础。

Abstract

This paper took the metal thin-walled components as the investigation tool on the basis of induced convex grooves. The maximization of the Specific Energy Absorption (SEA), and the minimization of the maximum peak force (MaxF) were considered as the multiobjective functions, the numbers and the radius of the convex grooves were chosen as design variables. The optimization was based on the minimization of MaxF and the maximization of SEA. The objective functions were constructed based on the Radial Basis Function (RBF), the multiobjective optimization for the thin-walled components with the induced convex grooves was presented by using the ideal point method, and considering the impact on the SEA and MaxF of the numbers and the radius of the convex grooves, after the optimization we have got the ideal convex grooves, to lay the foundation for the further study practical energy-absorbing element.


关键词

薄壁构件 / 比吸能 / 最大峰值碰撞力 / 优化设计 / 圆弧形凸槽

Key words

thin-walled components / Specific Energy Absorption (SEA) / maximum peak force (MaxF) / Design optimization / convex grooves

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谭丽辉;徐 涛;张炜;崔晓梅;;赵世佳. 带有圆弧形凸槽金属薄壁圆管抗撞性优化设计[J]. 振动与冲击, 2013, 32(21): 80-84
Tan Lihui;Xu Tao;Zhang Wei;Cui Xiaomei;Zhao Shijia. The Crashworthiness design optimization of metal thin-walledcylinders with convex grooves [J]. Journal of Vibration and Shock, 2013, 32(21): 80-84

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