Experimental Investigation of Symmetrical and Asymmetrical Supercritical Equilibrium Configurations of a Spherical Shell Under External Pressure

摘要

Axisymmetrical and asymmetrical eguilibrium configurations of clamped shell were studied for different levels of external pressure. The passage to these forms was schieved by the additional kinematics local perturbations, periodically sited along some parallels. The shell became more sensible to perturbations, which corresponded to asymmetrical buckling configuration of a perfect shell, when the load was high. But postbuckling equilibrium configurations, described by axisymmetrical deformation scheme, were closer to the initial form. While the pressure was low.