The bifurcation problem of columns caused by elastic-plastic stress wave propagation |
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Authors: | Han Qiang Hu Haiyan Yang Guitong |
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Affiliation: | 1. Institute of Vibration Engineering, Nanjing University of Aeronauticsand Astronautics, Nanjing 210016, P. R. China;2. Taiyuan University of Technology, Taiyuan 030024, P. R. China |
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Abstract: | In this paper, the dynamic buckling of an elastic-plastic column is studied. Let its dynamic buckling under step load be reduced to a bifurcation problem caused by the propagation of axial elastic-plastic stress wave. The critical buckling condition is given and the reflection of the elastic-plastic stress wave is taken into consideration. In the end, numerical computation and conclusions are presented and obtained. Foundation item: the National Natural Science Foundation of China (19672038) |
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Keywords: | bifurcation stress wave dynamic buckling |
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