一种平台化小偏置碰撞结构优化设计方法  

A Platformization Optimization Design Method for SOB Structures

作　　者：刘衡 郑颢 王玉超 李伟 范松 Liu Heng;Zheng Hao;Wang Yuchao;Li Wei;Fan Song(Guangzhou Automobile Group Co.,Ltd.Automotive Research&Development Center,Guangzhou 511434)

机构地区：[1]广州汽车集团股份有限公司汽车工程研究院,广州511434

出　　处：《汽车技术》2021年第7期21-25,共5页Automobile Technology

摘　　要：基于避能结构设计理念,设计了以环形吸能结构(Energy Absorbing Ring)为代表的传力吸能结构,通过对某SUV进行碰撞区域划分,设计正交试验,利用仿真计算结果建立了高精度响应面模型,得到不同碰撞区域的传力分布及吸能匹配的优化方案,并进行正面碰撞工况仿真验证。结合平台化开发特征,对与该SUV同平台的MPV车型进行了结构改进,获得了满足目标要求的仿真结果,利用响应面模型获得的车体结构变形与实际仿真结果误差为11%,验证了响应面模型的准确性。基于以上优化过程,总结获得了一种"控制不同碰撞区域传力吸能"的平台化小偏置碰撞结构优化设计方法及流程。Based on the concept of“energy avoidance”structure design,an advanced force transfer is designed with energy absorption structure represented by Energy Absorbing Ring(EAR).By dividing the collision area of a SUV,orthogonal test matrix is designed,and a high precision response surface model is established based on the simulation results.The optimization schemes of force distribution and energy absorption matching in different collision areas are obtained,and the frontal collision conditions are simulated and verified.Combined with the characteristics of platform development,the structure of MPV with the same platform as the SUV is improved,and the simulation results that meet the requirements of the target are obtained.The error between the body deformation obtained by response surface model and the actual simulation results is 11%,which proves that the response surface model is accurate and credible.Based on the above optimization process,a platformization optimization design method and process of Small Overlap Barrier(SOB)structures with“control force transfer and energy absorption in different impact areas”are summarized.

关 键 词：避能结构 小偏置碰撞 环形吸能结构 响应面模型 平台化 

分 类 号：U462.2[机械工程—车辆工程]