Buckling Evaluation Method of a Vacuum Chamber with a Large Branch Nozzle

Abstract

The buckling evaluation method of the cylindrical shell with stiffener rings and a branch nozzle subjected to external pressure is investigated by the experiments on the model cylinder and nonlinear finite element method. Taking into account the effects of initial geometrical imperfections and prebuckling biaxial stress states, the buckling pressures predicted by the simplified finite element method are fairly in accordance with experimental buckling pressure.