[ConstitutiveLawsApplication] Double Exponential Hardening Curve for Isotropic Damage Constitutive Law#14280
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aslan1372-droid wants to merge 9 commits intomasterfrom
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[ConstitutiveLawsApplication] Double Exponential Hardening Curve for Isotropic Damage Constitutive Law#14280aslan1372-droid wants to merge 9 commits intomasterfrom
aslan1372-droid wants to merge 9 commits intomasterfrom
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This reverts commit e257419.
aslan1372-droid
added
FastPR
| const double max_stress = r_mat_props[MAXIMUM_STRESS]; | ||
| const double Gf = r_mat_props[FRACTURE_ENERGY]; | ||
| const double E = r_mat_props[YOUNG_MODULUS]; | ||
| const bool Max_Stress_Satisfied =r_mat_props[SATISFY_MAXIMUM_STRESS]; |
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you can check if this variable is present in the properties and assign a default if it is not, more convenient. Something like:
const bool satisfy_max_stress = r_mat_props.Has(SATISFY_MAXIMUM_STRESS) ? r_mat_props[SATISFY_MAXIMUM_STRESS] : true;
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| const double A = ((3.0*X+1.0)*initial_threshold*(UniaxialStress-initial_threshold))/((X+1.0)*(0.5*initial_threshold*initial_threshold-E*Gf)); | ||
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| rDamage = 1-initial_threshold/(UniaxialStress*(X+1.0)) * (2.0*X*std::exp(A/2.0)+(1.0-X)*std::exp(A)); |
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please make sure of format the code so you add all spaces between operations, it improves readability. besides better use 1.0.
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| double X = 0.0; | ||
| if (Max_Stress_Satisfied) { | ||
| X = -std::sqrt(max_stress/(max_stress - initial_threshold)); |
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we must check in advance that the denominator is not 0 to avoid nan
loumalouomega
changed the title
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| const double max_stress = r_mat_props[MAXIMUM_STRESS]; | ||
| const double Gf = r_mat_props[FRACTURE_ENERGY]; | ||
| const double E = r_mat_props[YOUNG_MODULUS]; | ||
| const bool Max_Stress_Satisfied =r_mat_props[SATISFY_MAXIMUM_STRESS]; |
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Suggested change
| const bool Max_Stress_Satisfied =r_mat_props[SATISFY_MAXIMUM_STRESS]; | |
| const bool max_stress_satisfied =r_mat_props[SATISFY_MAXIMUM_STRESS]; |
To follow the style
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📝 Description
This PR introduces a new Double Exponential Hardening Damage model within the damage framework of the ConstitutiveLawsApplication.
The implementation extends the existing damage integration scheme by adding a new softening type that allows representing damage evolution using a double exponential formulation.
The following modifications were implemented:
DoubleExponentialHardeningDamageto theSofteningTypeenumeration.CalculateDoubleExponentialHardeningDamagein the damage integrator.GenericConstitutiveLawIntegratorDamage.MAXIMUM_STRESSSATISFY_MAXIMUM_STRESSThe new formulation enables improved representation of nonlinear softening responses and allows better calibration of damage evolution for materials exhibiting complex fracture behavior.