Primary Creep Under Nonconstant Load

Application ID: 12399

In this model example, you will study the creep behavior of material under non-constant loading. You will model the primary creep using a Norton–Bailey law and study the difference between the time hardening and the strain hardening methods available in COMSOL Multiphysics.

The model is taken from NAFEMS Understanding Non-Linear Finite Analysis Through Illustrative Benchmarks. The load consist of a uniaxial and a biaxial stepped load. The step in the load occurs at after a half of the full study time. The value of interest is the creep strain variation along the time. The computed solutions are compared with analytical solution given in the reference.

This model example illustrates applications of this type that would nominally be built using the following products: