Stability and Limit States of Elastoplastic Spherical Shells under Static and Dynamic Loading
V. G. Bazhenov, E. G. Gonik, A. I. Kibets, D. V. Shoshin
Research Institute of Mechanics of Lobachevsky Nizhnii Novgorod State niversity, Nizhnii Novgorod, 603950 Russia
Keywords: spherical shell, plastic deformation, critical load, postcritical behavior, finite element method, experiment
Abstract
The problem of elastoplastic deformation, buckling, and postcritical behavior of spherical shells is solved using a finite element method and a cross-type explicit scheme of time integration. Stability problems for hemispherical shells under external pressure and compression between rigid plates are considered. The influence of holes and boundary conditions on shell deformation is investigated. It is shown that the calculation results are in good agreement with experimental data.
|
