KinematicPowerLawSlipRule¶

Overview¶

This implements multi strength flow rule model of the form:

$\dot{\gamma}_{g,i}=\dot{\gamma}_{0}\left\langle \frac{\left|\tau_{g,i}-\bar{\tau}_{g,i}^{back}\right|-\bar{\tau}_{g,i}^{iso}}{\bar{\tau}_{g,i}^{resistance}}\right\rangle ^{n}\operatorname{sign}\left(\tau_{g,i}-\bar{\tau}_{g,i}^{back}\right)$

where $\dot{\gamma}_0$ , the reference slip rate, and $n$ , the rate sensitivity, are temperature-dependent parameters. SlipHardening models provide the back, isotropic, and flow resistance strengths.

Parameters¶

Parameter	Object type	Description	Default
`backstrength`	`neml::SlipHardening`	Back strength definition	No
`isostrength`	`neml::SlipHardening`	Isotropic strength definition	No
`flowresistance`	`neml::SlipHardening`	Flow resistance definition	No
`gamma0`	`neml::Interpolate`	Reference slip rate	No
`n`	`neml::Interpolate`	Rate sensitivity	No

Class description¶

class KinematicPowerLawSlipRule : public neml::SlipMultiStrengthSlipRule ¶

Kinematic hardening type power law slip.

Public Functions

KinematicPowerLawSlipRule(ParameterSet &params)¶: A completely generic slip rule with a backstrength, a isostrength, and a flow resistance.

virtual double sslip(size_t g, size_t i, double tau, std::vector<double> strengths, double T) const¶: The slip rate on group g, system i given the resolved shear, the strength, and temperature

virtual double d_sslip_dtau(size_t g, size_t i, double tau, std::vector<double> strengths, double T) const¶: Derivative of slip rate with respect to the resolved shear.

virtual std::vector<double> d_sslip_dstrength(size_t g, size_t i, double tau, std::vector<double> strengths, double T) const¶: Derivative of the slip rate with respect to the strengths.

Public Static Functions

static std::string type()¶: String type for the object system.

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

static ParameterSet parameters()¶: Default parameters.