| 刚粘塑性圆环受法向冲击时的动力屈曲 |
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| 引用本文： | 王德禹. 刚粘塑性圆环受法向冲击时的动力屈曲[J]. 力学季刊, 1996, 17(2): 142-146 |
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| 作者姓名： | 王德禹 |
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| 作者单位： | 上海交通大学 |
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| 基金项目： | 国家自然科学基金，上海交通大学科学基金 |
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| 摘 要： | 本文研究刚粘塑性圆环受法向冲击时的动力屈曲，文中考虑了冲击过程中圆环厚度的变化，环向力的变化以及基本变形速度的变化。通过用数值方法求解扰动运动微分方程，结果表明，当规定了临界放大函数后，仅当冲击速度位于某一范围之内时，才会发生动力屈曲。
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| 关 键 词： | 冲击屈曲 粘塑性 圆环 |
THE DYNAMIC BUCKLING OF A RIGID-VISCOPLASTIC RING UNDER EXTERNAL IMPULSIVE LOADING |
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| Wang Deyu. THE DYNAMIC BUCKLING OF A RIGID-VISCOPLASTIC RING UNDER EXTERNAL IMPULSIVE LOADING[J]. Chinese Quarterly Mechanics, 1996, 17(2): 142-146 |
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| Authors: | Wang Deyu |
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| Affiliation: | Shanghai Jiaotong University |
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| Abstract: | In this paper, the dynamic buckling of a rigid-viscoplastic ring under external impulsive loading is investigated. The change of the thickness of the ring, the hoop comoressive stress and the basic deformation velocity all have been taken into account. Numerical solution for the governing equation of dynamics shows that the dynamic buckling of the ring will be oc-cured in a certain range of impact velocity in the specified critical amplify function. |
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| Keywords: | impact buckling rigid-viscoplastic body ring. |
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