基于薄壁梁压溃和弯曲理论的前纵梁轻量化设计
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- 英文论文题名：Lightweight Design of VehicleFront Rails Based on the Theory of Thin-walled Beam Crush and Bending
- 论文作者：陈光 ; 陈超 ; 路深 ; 陈勇 ; 李杨
- 英文论文作者：Chen Guang ; Chen Chao ; Lu Shen ; Chen Yong ; Li Yang ; School of Mechanical Engineering ; Hebei University of Technology ; National Passenger Car Quality Supervision and Inspection Center ; China Automotive Technology and Research Center
- 年：2016
- 作者机构：河北工业大学机械工程学院;中国汽车技术研究中心国家轿车质量监督检验中心;
- 论文关键词：薄壁梁 ; 抗撞性 ; 轻量化设计 ; 压溃 ; 弯曲
- 英文论文关键词：thin-walled beam ; crashworthiness ; lightweight design ; collapse ; bending
- 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：U463.326
- 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：1
- 文件大小：43k
- 原文格式：O
- 会议级别：全国
摘要
在保证某国产B级轿车抗撞性的基础上进行了其前纵梁的轻量化设计。首先根据变形特征将前纵梁划分为5个子结构,并通过有限元分析获得各子结构的压溃力或弯曲力矩。以十二直角薄壁梁压溃理论为基础,根据压溃部分的压溃力进行子结构设计;进而根据弯曲变形中应力分布特点,将十二直角薄壁梁截面组合为一个或数个标准矩形截面,代入矩形薄壁梁最大弯矩理论表达式,获得十二直角薄壁梁的最大弯矩,并根据该车子结构的最大弯矩进行弯曲部分的结构设计。最终结果在保证整车正面碰撞波形的同时,减轻纵梁质量约15%。
On the base of ensuring the crashworthiness of a domestic B class passenger car,a lightweight design of front rail is conducted.Firstly,according to deformation feature,the front rail is divided into five substructures and the crush force and the bending moment of substructures are obtained by finite element analysis.Based on the theory of twelve right-angle thin-walled beam crush,substructures are designed based on the crush force in collapsed regions.Then,according to the stress distribution features of bending deformation,the sections of twelve right- angle thin- walled beam are composed to form a standard rectangular section or several standard rectangular sections,which arethen input to the theoretical expression of maximum bending moment for rectangular thin- walled beam,to get the maximum bending moment of twelve right- angle thin- walled beam.The bending structure is designed based on the maximum bending moment of substructures of vehicle.As the final result,the mass of front rail reduces by 15%,while ensuring the frontal crash waveform of vehicle.
On the base of ensuring the crashworthiness of a domestic B class passenger car,a lightweight design of front rail is conducted.Firstly,according to deformation feature,the front rail is divided into five substructures and the crush force and the bending moment of substructures are obtained by finite element analysis.Based on the theory of twelve right-angle thin-walled beam crush,substructures are designed based on the crush force in collapsed regions.Then,according to the stress distribution features of bending deformation,the sections of twelve right- angle thin- walled beam are composed to form a standard rectangular section or several standard rectangular sections,which arethen input to the theoretical expression of maximum bending moment for rectangular thin- walled beam,to get the maximum bending moment of twelve right- angle thin- walled beam.The bending structure is designed based on the maximum bending moment of substructures of vehicle.As the final result,the mass of front rail reduces by 15%,while ensuring the frontal crash waveform of vehicle.
引文
(一)本书仅收录摘要,全文刊载在《汽车工程》(2016年第10期)。