吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (1): 57-64.doi: 10.13229/j.cnki.jdxbgxb20161358

• Orginal Article • Previous Articles     Next Articles

Design of automotive body frontal structure for 25% overlap frontal collision

ZHANG Jun-yuan1, 2, JI Meng-xue1, WANG Nan1, YE Wei3   

  1. 1.State Key Laboratory of Automotive Simulation and Control, Jilin University,Changchun 130022, China;
    2.State Key Laboratory of Automotive Safety and Energy, Tsinghua University,Beijing 100084,China;
    3.Sales Department, ESI-Group(Beijing)Co., Ltd., Beijing 100094,China
  • Received:2016-08-15 Online:2018-02-26 Published:2018-02-26

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Abstract: Based on the Pam-Crash/Safe software, the basic vehicle-dummy finite element model for 25% overlap frontal collision was built. The bending and compression performance expressions of the main energy-absorbing components were simplified. With the restraint of structural intrusion, the total target energy absorption was assigned to the sub-components. Then, the average reactive forces of the sub-components were calculated according to the crush length. Finally, the parameters of cross-sections were designed to satisfy the average reactive forces and energy-absorbing requirements. The results show that the designed frontal structure can satisfy the regulation requirements of the three frontal collision conditions, which include 20% overlap frontal collision. This method not only improves the efficiency of structural optimization, but also realizes "forward design" to a certain degree.

Key words: vehicle engineering, frontal collision, design of frontal structure, energy-absorbing, equivalent simplified model

CLC Number: 

  • U461.91
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