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Pressurized Orthotropic Container

Application ID: 12669


A thin-walled container made of rolled steel is subjected to an internal overpressure. As an effect of the manufacturing method, one of the three material principal directions—the out-of- plane direction— has a higher yield stress than the other two. Hill’s orthotropic plasticity is used to model the difference in yield strength. The example also shows how to define and use curvilinear coordinates aligned with the principal directions of the material, which in this case follow the contours of the container.

The container has the shape of a cylinder capped by two torispherical heads (also called Klöpper head).

This model is included as an example in the following products:

Nonlinear Structural Materials Module

The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.