MaterialLib::Solids::Phasefield::COHESIVE_DegradationDerivative Class Reference

Detailed Description

Definition at line 163 of file PhaseFieldBase.h.

#include <PhaseFieldBase.h>

Inheritance diagram for MaterialLib::Solids::Phasefield::COHESIVE_DegradationDerivative:

Collaboration diagram for MaterialLib::Solids::Phasefield::COHESIVE_DegradationDerivative:

Public Member Functions
	COHESIVE_DegradationDerivative (double const Parameter_lch, SofteningCurve Parameter_softening_curve)
double	degradation (double const d_ip, double const k, double const ls) override
double	degradationDf1 (double const d_ip, double const k, double const ls) override
double	degradationDf2 (double const d_ip, double const k, double const ls) override
Public Member Functions inherited from MaterialLib::Solids::Phasefield::DegradationDerivative
virtual	~DegradationDerivative ()=default

Private Attributes
double const	lch
SofteningCurve	softening_curve

Constructor & Destructor Documentation

COHESIVE_DegradationDerivative()

MaterialLib::Solids::Phasefield::COHESIVE_DegradationDerivative::COHESIVE_DegradationDerivative ( double const Parameter_lch, SofteningCurve Parameter_softening_curve )

inline

Definition at line 170 of file PhaseFieldBase.h.

        : lch(Parameter_lch), softening_curve(Parameter_softening_curve){};

References lch, and softening_curve.

Member Function Documentation

degradation()

double MaterialLib::Solids::Phasefield::COHESIVE_DegradationDerivative::degradation ( double const d_ip, double const k, double const ls )

inlineoverridevirtual

Implements MaterialLib::Solids::Phasefield::DegradationDerivative.

Definition at line 173 of file PhaseFieldBase.h.

    {
        double const m1 = 4.0 * lch / acos(-1.) / ls;
        switch (softening_curve)
        {
            case SofteningCurve::Exponential:
            {
                double const m2 = std::pow(2., 5. / 3.) - 3.;
                double const n = 2.5;
                return std::pow(d_ip, n) /
                           (std::pow(d_ip, n) +
                            m1 * (1. - d_ip) * (1. + m2 * (1. - d_ip))) *
                           (1.0 - k) +
                       k;
            }
            default:
            {
                double const m2 = -0.5;
                double const n = 2.;
                return std::pow(d_ip, n) /
                           (std::pow(d_ip, n) +
                            m1 * (1. - d_ip) * (1. + m2 * (1. - d_ip))) *
                           (1. - k) +
                       k;
            }
        }
    };

References MaterialLib::Solids::Phasefield::Exponential, lch, and softening_curve.

degradationDf1()

double MaterialLib::Solids::Phasefield::COHESIVE_DegradationDerivative::degradationDf1 ( double const d_ip, double const k, double const ls )

inlineoverridevirtual

Implements MaterialLib::Solids::Phasefield::DegradationDerivative.

Definition at line 202 of file PhaseFieldBase.h.

    {
        double const m1 = 4.0 * lch / acos(-1.) / ls;
        switch (softening_curve)
        {
            case SofteningCurve::Exponential:
            {
                double const m2 = std::pow(2., 5. / 3.) - 3.;
                double const n = 2.5;
                double const a1 = std::pow(d_ip, n) +
                                  m1 * (1. - d_ip) * (1. + m2 * (1. - d_ip));
                double const a2 = n * std::pow(d_ip, n - 1.) -
                                  2. * m1 * m2 * (1. - d_ip) - m1;
                return (1. - k) *
                       (n * std::pow(d_ip, n - 1.) * a1 -
                        std::pow(d_ip, n) * a2) /
                       (a1 * a1);
            }
            default:
            {
                double const m2 = -0.5;
                double const n = 2.;
                double const a1 = std::pow(d_ip, n) +
                                  m1 * (1. - d_ip) * (1. + m2 * (1. - d_ip));
                double const a2 = n * std::pow(d_ip, n - 1.) -
                                  2. * m1 * m2 * (1. - d_ip) - m1;
                return (1. - k) *
                       (n * std::pow(d_ip, n - 1.) * a1 -
                        std::pow(d_ip, n) * a2) /
                       (a1 * a1);
            }
        }
    };

References MaterialLib::Solids::Phasefield::Exponential, lch, and softening_curve.

degradationDf2()

double MaterialLib::Solids::Phasefield::COHESIVE_DegradationDerivative::degradationDf2 ( double const d_ip, double const k, double const ls )

inlineoverridevirtual

Implements MaterialLib::Solids::Phasefield::DegradationDerivative.

Definition at line 236 of file PhaseFieldBase.h.

    {
        double const m1 = 4.0 * lch / acos(-1.) / ls;
        switch (softening_curve)
        {
            case SofteningCurve::Exponential:
            {
                double const m2 = std::pow(2., 5. / 3.) - 3.;
                double const n = 2.5;
                double a1 = std::pow(d_ip, n) +
                            m1 * (1. - d_ip) * (1. + m2 * (1. - d_ip));
                double a2 = n * std::pow(d_ip, n - 1.) -
                            2. * m1 * m2 * (1. - d_ip) - m1;
                return (1. - k) *
                       (2. * a2 * a2 * std::pow(d_ip, n) -
                        a1 * std::pow(d_ip, n) *
                            (2. * m1 * m2 +
                             n * std::pow(d_ip, n - 2.) * (n - 1.)) -
                        2. * a1 * a2 * n * std::pow(d_ip, n - 1.) +
                        a1 * a1 * n * std::pow(d_ip, n - 2.) * (n - 1.)) /
                       (std::pow(a1, 3));
            }
            default:
            {
                double const m2 = -0.5;
                double const n = 2.;
                double const a1 = std::pow(d_ip, n) +
                                  m1 * (1. - d_ip) * (1. + m2 * (1. - d_ip));
                double const a2 = n * std::pow(d_ip, n - 1.) -
                                  2. * m1 * m2 * (1. - d_ip) - m1;
                return (1. - k) *
                       (2. * a2 * a2 * std::pow(d_ip, n) -
                        a1 * std::pow(d_ip, n) *
                            (2. * m1 * m2 +
                             n * std::pow(d_ip, n - 2.) * (n - 1.)) -
                        2. * a1 * a2 * n * std::pow(d_ip, n - 1.) +
                        a1 * a1 * n * std::pow(d_ip, n - 2.) * (n - 1.)) /
                       (std::pow(a1, 3));
            }
        }
    };

References MaterialLib::Solids::Phasefield::Exponential, lch, and softening_curve.

Member Data Documentation

lch

double const MaterialLib::Solids::Phasefield::COHESIVE_DegradationDerivative::lch

private

Definition at line 166 of file PhaseFieldBase.h.

Referenced by COHESIVE_DegradationDerivative(), degradation(), degradationDf1(), and degradationDf2().

softening_curve

SofteningCurve MaterialLib::Solids::Phasefield::COHESIVE_DegradationDerivative::softening_curve

private

Definition at line 167 of file PhaseFieldBase.h.

Referenced by COHESIVE_DegradationDerivative(), degradation(), degradationDf1(), and degradationDf2().

---

The documentation for this class was generated from the following file:

• PhaseFieldBase.h