Nonlinear Bending Stability of a Long Flexible Cylindrical Shell with Geometrical Imperfections

Choice of the shape imperfections model in dynamics problems of a long flexible cylindrical shell subjected to force couples

“…It is known that the presence of small shape imperfections of thin-walled shells, which arise in the process of their manufacture, transportation and operation, can significantly reduce the critical value of static or dynamic buckling load and lead to emergency situations [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. In the articles [7][8][9][10][11][12][13], the authors presented a numerical technique that made it possible to estimate the effect of geometric imperfections of cylindrical shells on their bearing capacity under static loads. The first bifurcation mode as a model of shell imperfections under the action of one type of load (surface pressure, axial compression) was taken.…”