基于等效静态载荷法的汽车前端结构抗撞性尺寸和形貌优化

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (7) : 56-61.

论文

陆善彬1 ，蒋伟波2，左文杰1,3

作者信息 +

Size and morphology crashworthiness optimization for automotive frontal structures using equivalent static loads method

LU Shanbing 1, JIANG Weibo2, ZUO Wenjie1,3

Author information +

文章历史 +

摘要

为了减少在低速正碰下汽车的维修成本以及实现汽车前端结构的轻量化，采用等效静态载荷方法对汽车前端结构的尺寸和形状进行了抗撞性优化设计，以整个结构质量最小为优化的目标函数，以前部结构主要部件的厚度尺寸以及节点坐标形貌为设计变量，以侵入量以及加强筋的冲压工艺要求为约束进行了碰撞优化设计。等效静态载荷方法将非线性瞬态碰撞优化问题转化为多工况线性静态优化问题，数值算例证明等效静态载荷法可高效地求解碰撞优化问题，并得到高精度的最优解。

Abstract

Equivalent static loads method (ESLM) was introduced to study size and morphology crashworthiness optimization for automobile frontal structures to reduce maintenance cost and realize lightweight design of automotive frontal structures under lower speed frontal impacts. Taking minimizing the mass of automotive frontal structures as an objective function, thickness sizes of automotive frontal structures and morphology node coordinates as design variables, and invading quantity and process requirements of stiffeners as constrains, the crashworthiness optimization design was conducted. ESLM was used to convert this nonlinear and transient crashworthiness optimization problem into a multi-mode linear static optimization one. Numerical examples showed that ESLM can effectively be used to solve crashworthiness optimization problems and obtain their optimal solutions with a higher accuracy.

导出引用

陆善彬1,蒋伟波2，左文杰1,3. 基于等效静态载荷法的汽车前端结构抗撞性尺寸和形貌优化[J]. 振动与冲击, 2018, 37(7): 56-61

LU Shanbing 1, JIANG Weibo2, ZUO Wenjie1,3. Size and morphology crashworthiness optimization for automotive frontal structures using equivalent static loads method[J]. Journal of Vibration and Shock, 2018, 37(7): 56-61

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