正面碰撞中的老年驾驶员胸部响应研究*

doi:10.19562/j.chinasae.qcgc.2020.08.008

汽车工程 ›› 2020, Vol. 42 ›› Issue (8): 1050-1059.doi: 10.19562/j.chinasae.qcgc.2020.08.008

正面碰撞中的老年驾驶员胸部响应研究^*

武和全^1,2, 彭金平¹, 邓晓顺¹, 金鑫², 胡林¹

1.长沙理工大学,工程车辆轻量化与可靠性技术湖南省高校重点实验室,长沙 410004;
2.韦恩州立大学生物工程中心,美国底特律 48201

收稿日期:2019-09-19 出版日期:2020-08-25 发布日期:2020-09-24
通讯作者: 胡林,教授,工学博士,E-mail:hulin888@sohu.com。
基金资助:
*国家自然科学基金(51405035)、湖南省自然科学基金(2018JJ2432)和湖南省教育厅科学研究项目(16B015)资助。

Research on Chest Response of Elderly Drivers in Frontal Crash

Wu Hequan^1,2, Peng Jinping¹, Deng Xiaoshun¹, Jin Xin², Hu Lin¹

1. Changsha University of Science and Technology, Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle,
Education Department of Hunan Province, Changsha 410004;
2. Bioengineering Center, Wayne State University, Detroit 48201

Received:2019-09-19 Online:2020-08-25 Published:2020-09-24

摘要/Abstract

摘要： 为研究老年驾驶员在汽车正面碰撞中的胸部响应,本文中首先建立了一个老年女性人体胸部有限元模型CHARM_70,并通过与尸体实验对比,验证了模型的有效性。然后,采用圆盘和横向圆杆两种撞击头,选择3种碰撞高度,并改变碰撞速度和撞击质量对两具老人尸体PMHS1和PMHS2进行5种工况的摆锤碰撞实验。同时,利用CHARM_70模型,参照尸体实验的设置,进行同样5种工况的摆锤碰撞仿真。最后对实验和仿真的结果,即5种工况的碰撞力胸部压缩量关系曲线、最大胸部压缩量C_max和最大胸部黏性响应系数VC_max进行对比分析。结果表明,圆盘碰撞中部位置的胸部响应均比圆杆大,以CHARM_70模型而言,C_max大3个百分点,VC_max则大38%;而碰撞高度对圆杆碰撞的胸部响应有较大影响,圆杆碰撞高位置时的胸部平均响应约比中部位置小20%,而圆杆碰撞低位置时的胸部平均响应约比中部位置大10%。

关键词: 正面碰撞, 碰撞位置, 胸部压缩量, 胸部响应

Abstract: In order to study the chest response of the elderly driver in vehicle frontal crash, firstly, a finite element model CHARM_70 for elderly female chest is built and its simulation results are compared with that of corpse experiment to verify the effectiveness of the model. Then with a round disk and a transversely installed round bar as two impactor heads and three impact heights and different impact speeds and impact masses chosen, 5 conditions of pendulum impact experiment are conducted on two elderly corpses PMHS1 and PMHS2. Meanwhile using model CHARM_70 with same setting as corpse experiments, similar 5 conditions of pendulum impact simulation are also carried out. Finally, the results of experiment and simulation, i.e. the relationships between impact force and chest compression, the maximum chest compression C_max and the maximum chest viscosity response coefficient VC_max in five conditions are compared and analyzed. The results show that the chest response to round disk impacting middle position is larger than that to round bar impacting the same position, for model CHARM_70, the difference is 3 percentage points in C_max and is 38% in VC_max. And for round bar impact, the impact height has relatively significant effects on chest response, the average chest response to round bar impacting high position is about 20% smaller than middle position impact, while the average chest response to round bar impacting low position is some 10% larger than middle position impact.

Key words: frontal crash, impact position, chest compression, chest response

武和全, 彭金平, 邓晓顺, 金鑫, 胡林. 正面碰撞中的老年驾驶员胸部响应研究^*[J]. 汽车工程, 2020, 42(8): 1050-1059.

Wu Hequan, Peng Jinping, Deng Xiaoshun, Jin Xin, Hu Lin. Research on Chest Response of Elderly Drivers in Frontal Crash[J]. Automotive Engineering, 2020, 42(8): 1050-1059.

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正面碰撞中的老年驾驶员胸部响应研究^*

Research on Chest Response of Elderly Drivers in Frontal Crash

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