| 某车型座椅骨架动态安全性与模态分析 |
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| 引用本文： | 张家兴,张国胜,杜林森,刘宏利.某车型座椅骨架动态安全性与模态分析[J].交通节能与环保,2020(1):33-36. |
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| 作者姓名： | 张家兴 张国胜 杜林森 刘宏利 |
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| 作者单位： | 沈阳工业大学机械工程学院;交通运输部公路科学研究院 |
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| 基金项目： | 国家重点研发计划课题（2016YFC0802706）;中央级公益性科研专项资金项目（2018-9052）;中国博士后科学基金项目（2019M650613） |
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| 摘 要： | 为判断汽车座椅骨架的结构合理性,文章利用ANSA建立了某乘用车座椅骨架总成及假头型有限元模型,对该座椅骨架进行了模态分析与基于显式动力学有限元的头枕吸能性仿真试验,得到前四阶固有频率和振型、头枕前碰仿真分析加速度时间历程图。结果表明,该座椅骨架自由模态频率避开了人体最敏感的共振频率范围,整个碰撞过程假头型减速度超过80 g的连续作用时间未超过3 ms。
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| 关 键 词： | 座椅骨架 模态分析 头枕 吸能性 有限元 |
Dynamic Safety and Modal Analysis of a Passenger Car Seat Frame |
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| ZHANG Jiaxing,ZHANG Guosheng,DU Linsen,LIU Hongli.Dynamic Safety and Modal Analysis of a Passenger Car Seat Frame[J].Marine Energy Saving,2020(1):33-36. |
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| Authors: | ZHANG Jiaxing ZHANG Guosheng DU Linsen LIU Hongli |
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| Institution: | (School of Mechanical Engineering,Shenyang University of Technology,Liaoning Shenyang 110870,China;Research Institute of Highway Ministry of Transport,Beijing 100088,China) |
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| Abstract: | To judge the structural rationality of car seat skeleton,a finite element model of a passenger car seat frame assembly anddummy’s head are established by using ANSA,modal analysis of the seat skeleton and simulation test of pillow energy absorption based on explicit dynamic finite element method are carried out.The first four natural frequencies,mode shapes and acceleration time history of head-rest front iMPact simulation analysis are obtained. The results show that, the free mode frequency of the seat skeleton avoids the most sensitive resonance frequency range of the human body,during the whole collision process,the continuous acting time of the dummy deceleration exceeding 80 g is not more than 3 ms. |
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| Keywords: | seat skeleton modal analysis head-rest energy absorption performance finite element |
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