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:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
- COMSOL Multiphysics® and
- Geomechanics Module, or Nonlinear Structural Materials Module and
- MEMS Module, or Structural Mechanics Module and
- Corrosion Module, Electrochemistry Module, or Electrodeposition 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.