| 轴向冲击载荷作用下直杆弹性动态屈曲的研究 |
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| 引用本文： | 魏勇,朱兆祥,李永池.轴向冲击载荷作用下直杆弹性动态屈曲的研究[J].实验力学,1988,3(3). |
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| 作者姓名： | 魏勇 朱兆祥 李永池 |
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| 作者单位： | 中国科学技术大学，中国科学技术大学，中国科学技术大学 |
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| 摘 要： | 本文利用分叉的概念,从应力波理论出发,把轴向冲击载荷作用下直杆的弹性动态屈曲问题化为特征值问题,从而导出直杆动态屈曲的临界分叉准则。同时,本文对一端固支直杆受轴向冲击时的弹性屈曲问题进行了实验研究,测到的临界屈曲时间和理论预计值基本符合,证实了理论模型的合理性.理论和实验两方面的结果都表明,直杆受轴向冲击载荷作用时的屈曲现象发生在波动过程的前期,因此在处理这类问题时考虑波动效应是必要的。
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| 关 键 词： | 冲击载荷 动态屈曲 应力波. |
Buckling of Rods under Impact Load |
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| Wei Yong Zhu Zhaoxiang Li Yongchi.Buckling of Rods under Impact Load[J].Journal of Experimental Mechanics,1988,3(3). |
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| Authors: | Wei Yong Zhu Zhaoxiang Li Yongchi |
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| Institution: | University Of Science and Technology of China |
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| Abstract: | Clamped elastic rods, loaded impulsively in axial direction, are studied both theoretically and experimentally. The experimental results of buckling time are in good agreement with those predicted theoretically. In this study, it is also found that the effects of axial wave propagation influence significantly the buckling process of rods under axial impact. |
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| Keywords: | Impact loading dynamic buckling stress wave |
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