Welcome to Journal of Automotive Safety and Energy,
汽车安全与节能学报

Journal of Automotive Safety and Energy ›› 2010, Vol. 1 ›› Issue (4): 327-331.DOI: 10.3969/j.issn.1674-8484.2010.04.012

• Automotive Safety • Previous Articles    

Methods comparison of spotweld models in longitudinal beam#br# crash

JIANG Xiaoqing 1, YANG Jikuang* 1, XIAO Zhi 1, YE Yingtai 1, GUO Jie 2   

  1. 1. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha
    410082, China;
    2. Automobile Engineering Research Institute, Chery Automobile Co. Ltd, Wuhu 241009, China
  • Received:2010-11-19 Online:2010-12-20 Published:2010-12-20
  • Contact: *通讯作者/ Corresponding author： 杨济匡，博士生导师。E-mail： jikuangyang@hnu.cn
  • About author:蒋小晴（1983 －），男（汉），湖南，博士研究生。E-mail ：jxqhao123@126.com
  • Supported by:

    国家“八六三”高技术研究发展项目（2006AA110101）；教育部“111计划”（111-2-11）

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Abstract:  A corresponding crash finite element (FE) model was developed to study the influence of spotweld models in
longitudinal beam crash and the simulation accuracy. The model uses the Ls-Dyna software with five types of spotweld models,
including the rigid bar, spotweld, beam, spring, and solid element models, in the crash of a certain longitudinal beam jointed by
spotwelds. With a real world test comparison, this paper analyzes the failure of spotweld, the deformation of longitudinal beam,
the difficulty of modeling, and the advantages and disadvantages of modeling the connecting and loading. The results show that
the failure of spotwelds affects the carsh simulation precision, and that the solid element model, deformable beam model and
spring model have higher simulation precision.

Key words: car crash, spotweld model, spotweld failure, simulation accuracy

CLC Number: