吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (6): 1571-1577.doi: 10.13229/j.cnki.jdxbgxb201406006

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Development and analysis of a biomechanical model of occupant pelvis in automobile side impact

CHEN Ji-qing1, 2, MA Zheng-wei1, 2, LAN Feng-chong1, 2, DU Tian-ya1, 2   

  1. 1.School of Mechanical and Automotive Engineering, South China University of Technology,Guangzhou 510640, China;
    2.Guangdong Provincial Key Laboratory of Automotive Engineering, Guangzhou 510640, China
  • Received:2013-08-03 Online:2014-11-01 Published:2014-11-01

Abstract:

In order to study the biomechanical response and injury mechanisms of the occupant pelvis during impact, a three-dimensional finite element model of the pelvis based the CT data of a 50th percentile Chinese male was developed. Then the experimental methods used by Guillemot et al. and Salzar et al. were adopted to validate the biofidelity of the model; the accuracy of the model was examined by simulation of cortical bone with hexahedral elements and simulation of trabecular bone with shell elements. Simulation results indicate that both mesh methods can be applied to simulate the pelvis impact responses and injuries, however, the results of the model with cortical bone meshed by hexahedral elements are more consistent with that of experiments. Moreover, the comparative analysis of simulation results with female pelvis under the same conditions reveals that geometrical differences between male and female pelvises affect their deformation resistant capacities in impact.

Key words: vehicle engineering, side impact, pelvis, finite element model, biofidelity, injury

CLC Number: 

  • U461.91
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