Material_M Class
This class represents a material model that combines porous media properties with mechanical constitutive behavior. It provides methods to evaluate the mechanical constitutive law, retrieve the number of state variables, and check for plastic strain behavior.
Contents
Methods
- mechanicalLaw: Evaluates the mechanical constitutive law at a given integration point to return the stress tensor and the material stiffness matrix.
- getNumberStateVar: Returns the number of state variables associated with the mechanical constitutive law.
- hasPlasticStrain: Checks if the material exhibits elasto-plastic behavior.
Author
Danilo Cavalcanti
Version History
Version 1.00: Initial version (January 2024).
Class definition
classdef Material_M < handle
Public attributes
properties (SetAccess = public, GetAccess = public)
porousMedia = PorousMedia();
mechanical = [];
end
Constructor method
methods
%------------------------------------------------------------------
function this = Material_M(matData,lc)
this.porousMedia = matData.porousMedia;
% Mechanical constitutive behavior
if strcmp('elastic',matData.porousMedia.mechanical)
this.mechanical = MechanicalLinearElastic();
elseif strcmp('vonMises',matData.porousMedia.mechanical)
this.mechanical = MechanicalElastoPlasticVonMises();
elseif strcmp('druckerPrager',matData.porousMedia.mechanical)
this.mechanical = MechanicalElastoPlasticDruckerPrager();
elseif strcmp('elasticDruckerPrager',matData.porousMedia.mechanical)
this.mechanical = MechanicalNonlinearElasticDruckerPrager();
elseif strcmp('nonlinearAsymptotic',matData.porousMedia.mechanical)
this.mechanical = MechanicalNonlinearAsymptotic();
elseif strcmp('isoDamage',matData.porousMedia.mechanical)
this.mechanical = MechanicalIsotropicDamage(lc);
end
end
end
Public methods
methods
% -----------------------------------------------------------------
% Evaluate the mechanical constitutive law
function [stress,D] = mechanicalLaw(this,ip)
[stress,D] = this.mechanical.eval(this.porousMedia,ip);
end
% -----------------------------------------------------------------
% Get the number of state variables associated with the mechanical
% constitutive law
function nstVar = getNumberStateVar(this)
nstVar = this.mechanical.nstVar;
end
% -----------------------------------------------------------------
% Checks if the material exhibits elasto-plastic behaviour
function flag = hasPlasticStrain(this)
flag = this.mechanical.isElastoPlastic();
end
end
end