某车型正面碰撞中前地板搭接处开焊失稳的分析与改进
详细信息 查看官网全文
- 英文论文题名：Analysis and Improvement of the Weld Spots and Unstable in the Front Floor Connection in the Front Crash of A Car
- 论文作者：孙万旭 ; 朱德霞
- 英文论文作者：Sun Wanxu ; Zhu Dexia ; BAIC Motor Co. ; Ltd.R&D Center
- 年：2016
- 作者机构：北京汽车股份有限公司汽车研究院;
- 论文关键词：前地板 ; 截面力 ; 正面碰撞 ; 开焊失稳 ; 减重
- 英文论文关键词：front floor ; section force ; front crach ; failure of weld spot and unstable ; lighten of the white body
- 会议召开时间：2016-10-26
- 会议录名称：2016中国汽车工程学会年会论文集
- 英文会议录名称：Proceedings of 2016 SAE-China Congress
- 语种：中文
- 分类号：U467.14;U463.83
- 学会代码：QCGC
- 会议名称：2016中国汽车工程学会年会暨展览会
- 会议地点：中国上海
- 主办单位：中国汽车工程学会
- 学会名称：中国汽车工程学会
- 页数：6
- 文件大小：1839k
- 原文格式：O
- 会议级别：全国
摘要
本文针对某SUV在正面碰撞过程中出现的车身乘员舱前地板与门槛、前地板外侧连接板搭接处大面积开焊导致的车身结构失稳问题,分析前纵梁的吸能模式及结构设计的不足,结合CAE仿真分析,对前纵梁的结构进行优化,通过改善整车加速度峰值及压溃量,控制目标结构在碰撞过程中的变形。改进方案的有效性在碰撞试验中得到了验证,不仅有效解决了车身乘员舱处结构开焊失稳的问题,满足整车正面碰撞目标要求,同时减轻了结构重量,提升了车身轻量化程度。
In this paper,we select a suv and do the test in the Front crash.We find the failure area is under the the passagers body structure,including the connection in the front floor and sill inner,the connection in front floor and outer joint of the front floor.We analyse the energy absorbing mode of the front rail and the weakness of the structure.By the analysis of the safety in CAE,we optimize the structure of the front rail.By improving the accelerate peak of the vehicle and compression of the front rail,we control the deformation of the target structure during the crash.The efficiency of the improvement has been validated in the crash test.It can deal with the failure oi the weld spots and unstable in the passagers body structure.This improvement can reach the goals in front crash capability,and lighten the white body weight,the light quantization is improved.
In this paper,we select a suv and do the test in the Front crash.We find the failure area is under the the passagers body structure,including the connection in the front floor and sill inner,the connection in front floor and outer joint of the front floor.We analyse the energy absorbing mode of the front rail and the weakness of the structure.By the analysis of the safety in CAE,we optimize the structure of the front rail.By improving the accelerate peak of the vehicle and compression of the front rail,we control the deformation of the target structure during the crash.The efficiency of the improvement has been validated in the crash test.It can deal with the failure oi the weld spots and unstable in the passagers body structure.This improvement can reach the goals in front crash capability,and lighten the white body weight,the light quantization is improved.
引文
[1]郑炳杰.汽车正面碰撞仿真分析及车身前部吸能部件的优化[J].华南理工大学学报,2013.
[2]刘钊,朱平,喻明,等.基于正面碰撞力传递路径的轿车车身结构耐撞性研究[D].汽车安全技术学术会议,2011.
[3]叶永亮,羊军,傅强.车身正面碰撞传力路径设计探讨[J].上海汽车,2009.
[2]刘钊,朱平,喻明,等.基于正面碰撞力传递路径的轿车车身结构耐撞性研究[D].汽车安全技术学术会议,2011.
[3]叶永亮,羊军,傅强.车身正面碰撞传力路径设计探讨[J].上海汽车,2009.