Stress Corrosion

Application ID: 39121

Steel pipelines are often subjected to complex stress/strain conditions in the oil and gas industry. Additionally, pipes are subjected to significant longitudinal strain due to soil movement.

For the elastoplastic stress simulation, the Solid Mechanics interface is used with the small-strain plasticity model. The Secondary Current Distribution interface is used to model electrochemical reactions. The effect of elastic and plastic deformations on electrochemical reactions is accounted for through modified electrode kinetics expressions.

Pipeline corrosion is found to be accelerating with the increase in longitudinal strain in the plastic deformation region.

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