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| Non axisymmetric dynamic buckling of finite elastic cylindrical shells in propagating and reflecting of axial stress waves |
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| DOI：10.7511/jslx19974067 |
| KeyWord:elastic cylindrical shell,stress wave,reflection,non axisymmetric buckling |
| Xu Xinsheng Liu Shutian Liu Kaixin Guo Xinglin |
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| Abstract: |
| In this paper, non axisymmetric buckling of finite elastic cylindrical shell, which is impacted on the end by axial step loads, is discussed with the aid of the stress wave propagating and reflecting. By solving the disturbed equations, the bifurcation condition of the dynamic buckling, critical buckling load and buckling mode are obtained. The results show that when the thickness is not very small, non axisymmetric critical buckling load is higher than axisymmetric one; that when the thickness is very small, non axisymmetric buckling can occur first and that since the wave is reflected on the other end of the shell, the critical buckling load decreases further. The results are in agreement with the physical phenomenon in experiments. |
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