| 汽车整车结构侧面耐撞性有限元数值模拟 |
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| 引用本文： | 郑何妍,卢耀辉,赵智堂,张德文.汽车整车结构侧面耐撞性有限元数值模拟[J].装备环境工程,2017,14(12):45-50. |
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| 作者姓名： | 郑何妍 卢耀辉 赵智堂 张德文 |
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| 作者单位： | 西南交通大学 机械工程学院，成都 610031,西南交通大学 机械工程学院，成都 610031,西南交通大学 机械工程学院，成都 610031,西南交通大学 机械工程学院，成都 610031 |
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| 基金项目： | 国家自然科学基金（51275428）；西南交通大学科研训练国创项目（201610613033） |
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| 摘 要： | 目的研究汽车结构侧面主要承载部件的耐撞性,参考我国碰撞法规和ECE R95,根据国内某SUV汽车的参数和相关标准建立整车有限元模型和移动可变形壁障模型(MDB),对其进行数值模拟,为结构的优化设计提供参考。方法利用Hyper Mesh前处理将CAD模型转化为CAE有限元模型,输出k文件,并通过LS-DYNA大变形有限元仿真软件对其耐撞性进行计算。结果仿真结果显示,在汽车侧面碰撞过程中,B柱和车门等主要承载部件发生了较大的变形,B柱变形量为116.6 mm,车门的变形量为190 mm,其值符合标准要求,在碰撞结束后保证了足够的乘员空间。结论该车有较好的侧面耐撞性,且得出的碰撞数值模拟结果可为该车的结构设计提供参考。
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| 关 键 词： | 侧面碰撞 大变形数值模拟 移动变形壁障 B柱 |
| 收稿时间： | 2017/7/20 0:00:00 |
| 修稿时间： | 2017/12/15 0:00:00 |
FEM Numerical Simulation of Side Crashworthiness for Vehicle Structure |
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| ZHENG He-yan,LU Yao-hui,ZHAO Zhi-tang and ZHANG De-wen.FEM Numerical Simulation of Side Crashworthiness for Vehicle Structure[J].Equipment Environmental Engineering,2017,14(12):45-50. |
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| Authors: | ZHENG He-yan LU Yao-hui ZHAO Zhi-tang and ZHANG De-wen |
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| Institution: | School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China,School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China,School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China and School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | Objective To study the crashworthiness of the main bearing parts on the side of the car structure, establish finite element model of the vehicle and the moving deformable barrier model (MDB) according to parameters and related standards of a domestic SUV by referring to China''s collision regulation and ECE R95. Methods The HyperMesh preprocessing was used to convert the CAD model into CAE finite element model to output the k file, and put it in LS-DYNA (large deformation finite element simulation software) to calculate side crashworthiness of the vehicle. Result The main bearing parts such as the B-pillar and the door had large deformation in vehicle side impact. The deformation of the B-pillar was 116.6mm, and the deformation of the door was 190mm. It was in line with the requirement of China''s regulations and ensured sufficient occupant space after impact. Conclusion The vehicle has better side crashworthiness, and the numerical simulation results can provide a reference for the structural design of the vehicle. |
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| Keywords: | side impact large deformation numerical simulation moving deformation barrier B-pillar |
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