Generalized Kelvin Viscoelastic Material
Application ID: 29761
The behavior of viscoelastic materials can be represented by conceptual models composed of elastic and viscous elements connected in series or in parallel.
The rheology of the generalized Kelvin model (also called generalized Kelvin-Voigt model) consists of an elastic spring to represent the instantaneous stiffness plus n Kelvin-Voigt branches connected in series.
This example shows how to implement a generalized Kelvin viscoelastic material of two branches by solving the strains in the viscoelastic branches with the Domain ODEs and DAEs interface. The comparison to the analytical response for uniaxial deformation is also included.
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:
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.