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乘员股骨在轴向压力-弯矩下的损伤生物力学机理研究

蒋小晴 杨济匡 王丙雨 张维刚

蒋小晴, 杨济匡, 王丙雨, 张维刚. 乘员股骨在轴向压力-弯矩下的损伤生物力学机理研究[J]. 力学学报, 2014, 46(3): 465-474. doi: 10.6052/0459-1879-13-282
引用本文: 蒋小晴, 杨济匡, 王丙雨, 张维刚. 乘员股骨在轴向压力-弯矩下的损伤生物力学机理研究[J]. 力学学报, 2014, 46(3): 465-474. doi: 10.6052/0459-1879-13-282
Jiang Xiaoqing, Yang Jikuang, Wang Bingyu, Zhang Weigang. AN INVESTIGATION OF BIOMECHANICAL MECHANISMS OF OCCUPANT FEMUR INJURIES UNDER COMPRESSION-BENDING LOAD[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(3): 465-474. doi: 10.6052/0459-1879-13-282
Citation: Jiang Xiaoqing, Yang Jikuang, Wang Bingyu, Zhang Weigang. AN INVESTIGATION OF BIOMECHANICAL MECHANISMS OF OCCUPANT FEMUR INJURIES UNDER COMPRESSION-BENDING LOAD[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(3): 465-474. doi: 10.6052/0459-1879-13-282

乘员股骨在轴向压力-弯矩下的损伤生物力学机理研究

doi: 10.6052/0459-1879-13-282
基金项目: 国家科技部863计划资助项目(2006AA110101)、国家自然科学基金资助项目(51275164)、湖南大学汽车车身先进设计制造国家重点实验室自主研究课题(61075004)和教育部长江学者与创新团队发展计划(531105050037)资助项目.
详细信息
    作者简介:

    杨济匡,教授,博士生导师,主要研究方向:车辆碰撞安全及人体损伤生物力学.E-mail:jikuangyang@hnu.edu.cn

  • 中图分类号: U461.91

AN INVESTIGATION OF BIOMECHANICAL MECHANISMS OF OCCUPANT FEMUR INJURIES UNDER COMPRESSION-BENDING LOAD

Funds: The project was supported by National High Technology Research and Development Program of China (2006AA110101) and the National Natural Science Foundation of China (51275164), the Autonomous Subject Program of the State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University (61075004) and the Program for Changjiang Scholars and Innovative Research Team in University (531105050037).
  • 摘要: 汽车前碰撞事故中在冲击力作用下乘员股骨经常产生骨折创伤.为研究乘员股骨在不同的轴向压力-弯矩作用下的损伤机理及其耐受限度值,首先建立了一个较为精细的50百分位乘员的坐姿下肢有限元模型,并通过模拟股骨动态三点弯曲及下肢的轴向膝部冲击实验对模型的有效性进行了验证.在此基础上,针对股骨在轴向压力-弯矩载荷下的断裂失效分别进行了曲梁力学模型分析及有限元虚拟实验研究.结果表明:股骨骨折位置依赖于膝部轴向压力及弯矩的载荷大小的变化,在预加载弯矩从0增加到676Nm时,股骨失效部位由股骨颈部转移到股骨干末端区域;失效部位发生在颈部及股骨干时的最大力矩分别为285 296Nm和381443Nm.股骨损伤机理的分析结果阐释了在膝部轴向冲击实验中失效部位位于股骨颈部,而在汽车前碰撞事故中仍有大量的股骨干骨折出现的原因.

     

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出版历程
  • 收稿日期:  2013-09-02
  • 修回日期:  2013-11-08
  • 刊出日期:  2014-05-18

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