吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (5): 1498-1503.doi: 10.13229/j.cnki.jdxbgxb201705022

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Dummy material parameter optimization based on calibration experiment of chest pressure in collision

MA Kai1, 2, GAO Ji-dong2, YAN Lei1, XU Tao1   

  1. 1.College of Mechanical Science and Engineering, Jilin University,Changchun 130022, China;
    2.Automotive Engineering Research Institute,China Automotive Technology &Research Center, Tianjin 300300, China
  • Received:2016-06-21 Online:2017-09-20 Published:2017-09-20

Abstract: Based on full-size vehicle collision test, a new Finite Element Model (FEM) of dummy is built, and the corresponding parameter optimization method is proposed. To improve the consistency between the results of dummy simulation and full-size collision test, it is necessary to scientifically adjust the major structural material parameters of the FEM of dummy. First, the parameter optimization method is proposed and the important parameters, which significantly affect the simulation results, are selected. Then, the optimal method is applied to obtain the modified FEM of dummy that is similar to that of the full-size vehicle. Finally, taking the chest pressures of some FEMs of dummy in positive collision as examples, the main material parameters of the dummy chest are selected and the structural parameters are modified by the optimization method, thus, ensuring that the chest pressure peak and spring rate of the simulation dummy are consistent with the full-size vehicle collision results. The method proposed in this work can be used to improve the FEM of dummy to meet the requirement of full-size vehicle collision simulation.

Key words: mechanical design, vehicle collision, FEM dummy, parameter optimization, parameter optimal selection

CLC Number: 

  • U463
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