黄小平,李善鹏,田诗豪,于红,刘建林

• 1:中国石油大学(华东)工程力学系

摘要(Abstract)：

固体对弹性结构的冲击动力学模型在许多工程领域中具有广泛应用。其中,对刚性球冲击所诱发的悬臂梁的大位移的系统研究尚是一个悬而未解的基本问题。在本研究中,我们通过建立的动载荷模型,表达出了悬臂梁发生大变形时的最大挠度,并将其与小变形模型进行了比较;同时还开展了实验和有限元模拟,经过验证发现大变形模型更加准确,尤其是当悬臂梁呈现出明显的几何非线性时应采用该模型。结果表明,梁的最大挠度受三个独立的无量纲参数控制,并分别讨论了其对最大挠度的影响。这些研究发现为人们深刻理解细长结构的冲击过程提供了理论参考,也对设计微尺度的新器件和新材料具有启发意义。

关键词(KeyWords)： 悬臂梁;冲击;大位移;应变能;最大挠度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(11672335)资助

作者(Author): 黄小平,李善鹏,田诗豪,于红,刘建林

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