Finite Element simulation of dynamic buckling of cylinders subjected to periodic shear |
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| Authors: | G Michel A Combescure J F Jullien |
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| Affiliation: | a Research Unit of Civil Engineering, Institut National des Sciences Appliquées, 20 Avenue Albert Einstein, Lyon, 69621 Villeurbanne Cedex, France;b Laboratory of Mechanical and Technology, Ecole Normale Supérieure, Cachan, France |
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| Abstract: | This paper deals with the buckling of cylindrical shells under a dynamic shear load. The aim of our study is to compare static buckling load and buckling load during a sweep frequency excitation. First, we describe the special experimental device and the two Finite Element codes used in this study. In a second part static tests and corresponding Finite Element calculations are presented in order to have a reference buckling load and to understand the effect of initial imperfections. Then, a vibration analysis is performed in order to investigate the effect of geometric imperfection and a preload. In the last part, we discuss dynamic results. When we reach the first eigen frequency, the buckling load drops and the buckling deformations increase due to a parametric resonance. There is a coupling between vibration and buckling modes. |
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| Keywords: | Buckling Shear Parametric resonance Cylindrical shell Vibration |
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