Generic creep law

Overview

This object implements the generic creep law

$\dot{\varepsilon}^{cr} = \exp\left(f\left(\log \sigma_{eq}\right) \right)$

where $f$ is a generic function implemented as an interpolate object.

Parameter	Object type	Description	Default
`cfn`	`neml::Interpolate`	Creep rate function	No

class GenericCreep : public neml::ScalarCreepRule 

A generic creep rate model where log(creep_rate) = Interpolate(log(stress))

Public Functions

GenericCreep(ParameterSet &params): Parameters: interpolate giving the log creep rate.

virtual void g(double seq, double eeq, double t, double T, double &g) const: scalar creep rate = exp(f(log(sigma)))

virtual void dg_ds(double seq, double eeq, double t, double T, double &dg) const: Derivative of creep rate wrt effective stress.

virtual void dg_de(double seq, double eeq, double t, double T, double &dg) const: Derivative of creep rate wrt effective strain.

Public Static Functions

static std::unique_ptr<NEMLObject> initialize(ParameterSet &params): Setup from a parameter set.