Creep is a rate-dependent material nonlinearity in which the material continues to deform under a constant load. The material deforms under an initial applied load and the load diminishes over time with an increase in deformation or creep strain. The equivalent creep strain gives a measure of the amount of the creep strain in an engineering body. The equivalent creep strain is calculated from component creep strains.

In order to develop creep strain, creep material properties must be defined. You may define creep material properties by choosing one of the available 13 creep models in Engineering Data. This result type is available in Mechanical only after you have selected a creep material for at least one prototype in the analysis.