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兵工学报  2014 

低冲量质量块冲击下固支泡沫夹芯梁的动力响应

DOI: 10.3969/j.issn.1000-1093.2014.08.015, PP. 1230-1235

Keywords: 固体力学,三明治梁,质量块冲击,分析模型,动态响应

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Abstract:

?计及面板和芯材的耦合变形机制以及芯材在三明治梁变形过程中的作用,改进三明治梁的分析模型,并讨论低冲量质量块冲击下两端固支泡沫夹芯梁的动力响应特性。不同于现有的三明治梁分析模型,给出的分析模型在上下面板达到共同速度前计及芯材的弯曲作用。与有限元模拟和实验结果的对比说明,当三明治梁在低冲量质量块撞击下发生整体变形时,分析模型可以更加准确地预测其变形过程。

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