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相似理论在泡沫铝冲击吸能过程的应用分析

王春华 刘影

王春华, 刘影. 相似理论在泡沫铝冲击吸能过程的应用分析[J]. 机械科学与技术, 2017, 36(10): 1542-1549. doi: 10.13433/j.cnki.1003-8728.2017.1010
引用本文: 王春华, 刘影. 相似理论在泡沫铝冲击吸能过程的应用分析[J]. 机械科学与技术, 2017, 36(10): 1542-1549. doi: 10.13433/j.cnki.1003-8728.2017.1010
Wang Chunhua, Liu Ying. Analysis of Impact Energy Absorption for Foam Aluminum Components based on Similarity Theory[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(10): 1542-1549. doi: 10.13433/j.cnki.1003-8728.2017.1010
Citation: Wang Chunhua, Liu Ying. Analysis of Impact Energy Absorption for Foam Aluminum Components based on Similarity Theory[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(10): 1542-1549. doi: 10.13433/j.cnki.1003-8728.2017.1010

相似理论在泡沫铝冲击吸能过程的应用分析

doi: 10.13433/j.cnki.1003-8728.2017.1010
基金项目: 

国家自然科学基金项目(51374120)资助

详细信息
    作者简介:

    王春华(1963-),教授,博士,博士生导师,研究方向为机械设计及理论、机械系统动态特性与控制,1306019516@qq.com

Analysis of Impact Energy Absorption for Foam Aluminum Components based on Similarity Theory

  • 摘要: 为解决大型泡沫铝元件实体冲击试验成本较高,数值模拟计算量大的问题,基于相似理论按尺寸比3:1建立三种(圆台、四棱台及六棱台型)泡沫铝元件大、小模型,应用量纲分析法推导对应模型冲击吸能量的相似比,并进行有限元仿真及小模型实体冲击试验。结果表明,冲击试验吸能量与其有限元仿真结果误差较小,验证了有限元仿真对泡沫铝轴向冲击过程的可行性。三种元件大、小模型的有限元仿真吸能量比值分别为26.51,27.18,26.73,与依量纲分析法所得吸能量相似比27:1相近,表明可基于相似理论对泡沫铝元件轴向冲击过程的吸能特性进行分析。
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出版历程
  • 收稿日期:  2016-06-28
  • 刊出日期:  2017-10-05

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