首页|Investigation on vehicle occupant dummy applicability for under-foot impact loading conditions

Investigation on vehicle occupant dummy applicability for under-foot impact loading conditions

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Purpose:Under-foot impact loadings can cause serious lower limb injuries in many activities,such as automobile collisions and underbody explosions to military vehicles.The present study aims to compare the biomechanical responses of the mainstream vehicle occupant dummies with the human body lower limb model and analyze their robustness and applicability for assessing lower limb injury risk in under-foot impact loading environments.Methods:The Hybrid Ⅲ model,the test device for human occupant restraint(THOR)model,and a hybrid human body model with the human active lower limb model were adopted for under-foot impact analysis regarding different impact velocities and initial lower limb postures.Results:The results show that the 2 dummy models have larger peak tibial axial force and higher sensitivity to the impact velocities and initial postures than the human lower limb model.In particular,the Hybrid Ⅲ dummy model presented extremely larger peak tibial axial forces than the human lower limb model.In the case of minimal difference in tibial axial force,Hybrid Ⅲ's tibial axial force(7.5 KN)is still 312.5％that of human active lower limb's(2.4 KN).Even with closer peak tibial axial force values,the biomechanical response curve shapes of the THOR model show significant differences from the human lower limb model.Conclusion:Based on the present results,the Hybrid Ⅲ dummy cannot be used to evaluate the lower limb injury risk in under-foot loading environments.In contrast,potential improvement in ankle bio-fidelity and related soft tissues of the THOR dummy can be implemented in the future for better applicability.

Lower limbUnder-foot impactHuman body modelDummyFinite element model

Teng-Fei Tian、Fu-Hao Mo、Hao-Yang Su、Can Huang、Hui Zhao、Jun Liu、Bo Shang、Kui Li、Jin-Long Qiu

展开 >

State Key Laboratory of Advanced Design and Manufacture for Vehicle Body,Hunan University,Changsha,410082,China

Institute for Traffic Medicine,Daping Hospital,Army Medical University,Chongqing,400042,China

Chongqing Zhongzheng Judicial Expert Center,Chongqing,400020,China

NIO Limited Liability Company,Shanghai,200050,China

College of Medical Informatics,Chongqing Medical University,Chongqing,400016,China

Chongqing Key Laboratory of Traffic Injury and Vehicle Ergonomics,Chongqing,400042,China

展开 >

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaHunan Youth Talent ProgramNatural Science Foundation of ChongqingChongqing Technology Innovation and Application Development Project

51875187321713052020RC3016cstc2021jcyjmsxmX0109CSTB2023YSZX-JSX0003

2024

10.1016/j.cjtee.2024.02.002

中华创伤杂志(英文版)
中华医学会

中华创伤杂志(英文版)

CSTPCD
影响因子：0.608
ISSN：1008-1275
年,卷(期)：2024.27(4)
  • 2