Pressurized Orthotropic Container

Model ID: 12669


A thin-walled container made out of rolled steel is subjected to inner overpressure. The material is represented with an elastic isotropic model together with Hill orthotropic plasticity. The principal directions of the material follow the geometrical shape of the structure and therefore a unique base vector system is created. The stress and plastic strain due to overpressure are evaluated. The results are in good agreement with an approximate analytical solution. This example illustrates how to deal with structures where material behavior varies with shape. This is applicable to materials such as rolled steel or composites.