relaxation-Park-dist-user¶
Module: solid
Category: materialprop
Type string: "relaxation-Park-dist-user"
Parameters¶
| Name | Description | Default | Units |
|---|---|---|---|
tau |
[] | ||
beta |
[] |
Description¶
The material type for this relaxation function is relaxation-Park-dist-user.
The reduced relaxation function for this material type is given by
\[
g\left(\mathbf{F}\left(v\right);t-v\right)=\frac{1}{1+\left(\frac{t-v}{\tau}\right)^{\beta}}
\]
where \(\tau\left(K_{2}\left(v\right)\right)\) and \(\beta\left(K_{2}\left(v\right)\right)\) are user-specified functions, given either as mathematical expressions or loadcurves. The definition of \(K_{2}\left(v\right)\) is given in Section relaxation-exp-dist-user and this section also provides examples of how to specify these functions.