Effective stress

Overview

These objects provide a modular effective stress system for defining the stress correlating multiaxial stress states to uniaxial creep rupture data. Mathematically, this class provides the interface

The effective stress, should be some scalar function of the stress such that for uniaxial load the effective stress maps the uniaxial stress tensor to the value of tensile stress.

Implementations

• von Mises effective stress
  • Overview
  • Parameters
  • Class description
    • VonMisesEffectiveStress
      • VonMisesEffectiveStress::VonMisesEffectiveStress()
      • VonMisesEffectiveStress::effective()
      • VonMisesEffectiveStress::deffective()
      • VonMisesEffectiveStress::type()
      • VonMisesEffectiveStress::parameters()
      • VonMisesEffectiveStress::initialize()
• Max principal effective stress
  • Overview
  • Parameters
  • Class description
    • MaxPrincipalEffectiveStress
      • MaxPrincipalEffectiveStress::MaxPrincipalEffectiveStress()
      • MaxPrincipalEffectiveStress::effective()
      • MaxPrincipalEffectiveStress::deffective()
      • MaxPrincipalEffectiveStress::type()
      • MaxPrincipalEffectiveStress::parameters()
      • MaxPrincipalEffectiveStress::initialize()
• Huddleston effective stress
  • Overview
  • Parameters
  • Class description
    • HuddlestonEffectiveStress
      • HuddlestonEffectiveStress::HuddlestonEffectiveStress()
      • HuddlestonEffectiveStress::effective()
      • HuddlestonEffectiveStress::deffective()
      • HuddlestonEffectiveStress::type()
      • HuddlestonEffectiveStress::parameters()
      • HuddlestonEffectiveStress::initialize()
• Maximum of several effective stresses
  • Overview
  • Parameters
  • Class description
    • MaxSeveralEffectiveStress
      • MaxSeveralEffectiveStress::MaxSeveralEffectiveStress()
      • MaxSeveralEffectiveStress::effective()
      • MaxSeveralEffectiveStress::deffective()
      • MaxSeveralEffectiveStress::type()
      • MaxSeveralEffectiveStress::parameters()
      • MaxSeveralEffectiveStress::initialize()
• Sum of several effective stresses
  • Overview
  • Parameters
  • Class description
    • SumSeveralEffectiveStress
      • SumSeveralEffectiveStress::SumSeveralEffectiveStress()
      • SumSeveralEffectiveStress::effective()
      • SumSeveralEffectiveStress::deffective()
      • SumSeveralEffectiveStress::type()
      • SumSeveralEffectiveStress::parameters()
      • SumSeveralEffectiveStress::initialize()
• Mean effective stress
  • Overview
  • Parameters
  • Class description
    • MeanEffectiveStress
      • MeanEffectiveStress::MeanEffectiveStress()
      • MeanEffectiveStress::effective()
      • MeanEffectiveStress::deffective()
      • MeanEffectiveStress::type()
      • MeanEffectiveStress::parameters()
      • MeanEffectiveStress::initialize()

Class description

class EffectiveStress : public neml::NEMLObject

Base class of modular effective stresses used by ModularCreepDamage.

Subclassed by neml::HuddlestonEffectiveStress, neml::MaxPrincipalEffectiveStress, neml::MaxSeveralEffectiveStress, neml::MeanEffectiveStress, neml::SumSeveralEffectiveStress, neml::VonMisesEffectiveStress

Public Functions

EffectiveStress(ParameterSet &params)

virtual void effective(const double *const s, double &eff) const = 0

virtual void deffective(const double *const s, double *const deff) const = 0