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Reserved Material Parameters
Reserved material parameter names cannot be used when creating a new user-defined parameter. They can only be used for certain fields on the Material Definition dialog box as shown in the following table:
Parameter Name
Type
Valid Values
Usage
PTC_MATERIAL_NAME
String
A character string with a maximum length of 31 characters.
To define the material name in the Material Definition dialog box.
PTC_MATERIAL_TYPE
Integer
Derive from material types defined.
To define the Material Type of a material in the Material Definition dialog box.
PTC_MATERIAL_SUB_TYPE
String
Linear
Hyperelastic
Elastoplastic
To define the stress and strain response of a material in the Material Definition dialog box.
PTC_MATERIAL_DESCRIPTION
String
A character string
To provide a detailed description of a material on the Material Definition dialog box.
PTC_MTRL_THERMAL_SOFTENING_COEF
Real number
Positive real numbers
To specify the coefficient of thermal softening of an elastoplastic material on the Structural tab of the Material Definition dialog box.
PTC_MTRL_HARDENING_DEF_BY_TESTS
Yes or No
Yes
No
Yes—To specify stress and strain values from test data to find the best-fit curve of a material model on the Plastic Hardening Law Definition dialog box.
No—To select and define Hardening law.
PTC_MATERIAL_MODEL
String
NEO-HOOKEAN
ARRUDA-BOYCE
MOONEY-RIVLIN
POLYNOMIAL ORDER 2
REDUCED POLY. ORDER 2
YEOH
To define the stress and strain data in the test area to find the best-fit curve of a material model in the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_C10
Real number
Positive real numbers
To specify the material constant C10 to calculate the initial shear modulus of Neo-Hookean, Mooney-Rivlin, Polynomial Order 2, Reduced Poly. Order 2 and Yeoh material models of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_C01
Real number
All real numbers
To specify the material constant C01 to calculate the initial shear modulus of Mooney-Rivlin and Polynomial Order 2 material models of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_C11
Real number
All real numbers
To specify the material constant C11 of Polynomial Order 2 material model of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_C20
Real number
All real numbers
To specify the material constant C20 of Polynomial Order 2, Reduced Poly. Order 2, and Yeoh material models of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_C02
Real number
All real numbers
To specify the material constant C02 of Polynomial Order 2 material model of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_C30
Real number
All real numbers
To specify the material constant C30 of Yeoh material model of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_D
Real number
Positive real numbers including 0.0.
To specify the incompressibility parameter D of Arruda-Boyce material model of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_D1
Real number
Positive real numbers including 0.0.
To specify the material constant D1 to calculate the initial bulk modulus of Neo-Hookean, Mooney-Rivlin, Polynomial Order 2, Reduced Poly. Order 2, and Yeoh material models of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_D2
Real number
All real numbers
To specify the material constant D2 of Polynomial Order 2 Reduced Poly. Order 2, and Yeoh material models of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_D3
Real number
All real numbers
To specify the material constant D3 of Yeoh material model of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_MU
Real number
Positive real numbers
To specify the initial shear modulus μ of Arruda-Boyce material model of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_COEF_LAMBDA
Real number
Positive real numbers greater than 1.0
To specify the limiting network stretch λ of Arruda-Boyce material model of a hyperelastic material on the Structural tab of the Material Definition dialog box.
PTC_MATERIAL_MODEL_DEF_BY_TESTS
Yes or No
Yes
No
Yes—To specify stress and strain values from test data to find the best-fit curve of a material model on the Hyperelastic Material Definition dialog box.
No—To select and define Material Model.
PTC_MTRL_HARDENING
String
Perfect Plasticity
Linear Hardening
Power Law
Exponential Law
To specify the hardening law for an elastoplastic material on the Material Definition dialog box.
PTC_MTRL_HARDENING_LIMIT
Real number
Positive real numbers
To specify the hardening limit of an elastoplastic material on the Structural tab of the Material Definition dialog box when the hardening law selected is Exponential Law.
PTC_MTRL_EXPONENT_LAW_EXPONENT
Real number
Positive real numbers
To specify the exponent of an elastoplastic material on the Structural tab of the Material Definition dialog box when the hardening law selected is Exponential Law.
PTC_MTRL_POWER_LAW_EXPONENT
Real number
0.0<quantity<=1.0
To specify the exponent of an elastoplastic material on the Structural tab of the Material Definition dialog box when the hardening law selected is Power Law.
PTC_MTRL_MODIFIED_MODULUS
Real number
Positive real numbers
To specify the modified modulus of an elastoplastic material on the Structural tab of the Material Definition dialog box when the hardening law selected is Power Law.
PTC_MTRL_TANGENT_MODULUS
Real number
Positive real numbers
To specify the tangent modulus of an elastoplastic material on the Structural tab of the Material Definition dialog box when the hardening law selected is Linear Hardening.
PTC_MASS_DENSITY
Real number
Positive real numbers
To define the mass density of a material on the Structural tab of the Material Definition dialog box.
PTC_POISSON_RATIO
Real number
Value must be between -0.9999 and 0.4999.
To define Poisson ratio for an isotropic material on the Structural tab of the Material Definition dialog box.
PTC_YOUNG_MODULUS
Real number
Positive real numbers
To define Young's modulus on the Structural tab of the Material Definition dialog box when symmetry selected is Isotropic.
PTC_THERMAL_EXPANSION_COEF
Real number
All real numbers
To define the Coefficient of Thermal Expansion of an isotropic material on the Structural tab of the Material Definition dialog box.
PTC_TENSILE_YIELD_STRESS
Real number
Positive real numbers
To define the material limit tensile yield stress for an isotropic material on the Structural tab of the Material Definition dialog box.
PTC_TENSILE_ULTIMATE_STRESS
Real number
Positive real numbers
To define the tensile ultimate stress of an isotropic material on the Structural tab of the Material Definition dialog box.
PTC_COMPR_ULTIMATE_STRESS
Real number
Positive real numbers
To define the compressive ultimate stress of an isotropic material on the Structural tab of the Material Definition dialog box.
PTC_SHEAR_ULTIMATE_STRESS
Real number
Positive real numbers
To define the shear ultimate stress of a transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_SPECIFIC_HEAT
Real number
Positive real numbers
To define specific heat capacity of an isotropic material on the Thermal tab of the Material Definition dialog box .
PTC_THERMAL_CONDUCTIVITY
Real number
Positive real numbers
To define the thermal conductivity of an isotropic material on the Thermal tab of the Material Definition dialog box.
PTC_FAILURE_CRITERION_TYPE
String
None
Distortion Energy (von Mises)
Maximum Shear Stress (Tresca)
Modified Mohr
To specify failure criterion for isotropic and transversely isotropic materials on the Structural tab of the Material Definition dialog box.
PTC_FATIGUE_TYPE
String
None
Unified Material Law (UML)
To specify the Fatigue type on the Structural tab of the Material Definition dialog box.
PTC_FATIGUE_MAT_TYPE
String
Titanium Alloys
Aluminum Alloys
Unalloyed Steels
Low Alloy Steels
To define the Material Type of an isotropic material in the Fatigue area on the Structural tab of the Material Definition dialog box.
PTC_FATIGUE_MAT_FINISH
String
Polished
Ground
Good Machined, Average Machined
Poor Machined
Hot Rolled
Forged
Cast
Water Corroded
Sea Water Corroded
Nitrided
Cold Rolled
shot peened
To define the Surface Finish property of an isotropic material in the Fatigue area on the Structural tab of the Material Definition dialog box.
PTC_FATIGUE_STRNGTH_REDUCT_FCTR
Real number
Positive real numbers
To define the Failure Strength Reduction Factor of an isotropic material in the Fatigue area on the Structural tab of the Material Definition dialog box.
PTC_TSAI_WU_INTERACTION_TERM_F12
Real number
All real numbers
To define the material limit Tsai-Wu Interaction Term F12 of a transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_YOUNG_MODULUS_E1
Real number
Positive real numbers
To define Young’s modulus E1 of a transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_YOUNG_MODULUS_E2
Real number
Positive real numbers
To define Young’s modulus E2 of an orthtropic or transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_YOUNG_MODULUS_E3
Real number
Positive real numbers
To define Young’s modulus E3 of an orthotropic material on the Structural tab of the Material Definition dialog box.
PTC_POISSON_RATIO_NU21
Real number
Value must be between –0.9999 and 0.4999
To define Poisson’s ratio NU21 of an orthotropic or transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_POISSON_RATIO_NU31
Real number
Value must be between –0.9999 and 0.4999
To define Poisson’s ratio NU31 of an orthotropic material on the Structural tab of the Material Definition dialog box.
PTC_POISSON_RATIO_NU32
Real number
Value must be between –0.9999 and 0.4999
To define Poisson’s ratio NU32 of an orthotropic or transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_SHEAR_MODULUS_G12
Real number
Positive real numbers
To define shear modulus G12 of an orthotropic or transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_SHEAR_MODULUS_G13
Real number
Positive real numbers
To define shear modulus G13 of an orthotropic or transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_SHEAR_MODULUS_G23
Real number
Positive real numbers
To define shear modulus G23 of an orthotropic or transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_THERMAL_EXPANSION_COEF_A1
Real number
All real numbers
To define the Coefficient of Thermal Expansion a1 of an orthotropic or transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_THERMAL_EXPANSION_COEF_A2
Real number
All real numbers
To define the Coefficient of Thermal Expansion a2 of an orthotropic or transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_THERMAL_EXPANSION_COEF_A3
Real number
All real numbers
To define the Coefficient of Thermal Expansion a3 of an orthotropic material on the Structural tab of the Material Definition dialog box.
PTC_TENSILE_ULTIMATE_STRESS_ST1
Real number
Positive real numbers
To define Tensile Ultimate Stress St1 of a transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_TENSILE_ULTIMATE_STRESS_ST2
Real number
Positive real numbers
To define Tensile Ultimate StressSt2 of a transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_COMPR_ULTIMATE_STRESS_SC1
Real number
Negative real numbers
To define the material limit compressive ultimate stress SC1 of a transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_COMPR_ULTIMATE_STRESS_SC2
Real number
Negative real numbers
To define the material limit compressive ultimate stress SC2 of a transversely isotropic material on the Structural tab of the Material Definition dialog box.
PTC_THERMAL_CONDUCTIVITY_K1
Real number
Positive real numbers
To define thermal conductivity K1 of an orthotropic or transversely isotropic material on the Thermal tab of the Material Definition dialog box.
PTC_THERMAL_CONDUCTIVITY_K2
Real number
Positive real numbers
To define thermal conductivity K2 of an orthotropic or transversely isotropic material on the Thermal tab of the Material Definition dialog box.
PTC_THERMAL_CONDUCTIVITY_K3
Real number
Positive real numbers
To define thermal conductivity K3 of an orthotropic or transversely isotropic material on the Thermal tab of the Material Definition dialog box.
PTC_INITIAL_BEND_Y_FACTOR
Real number
All positive real numbers including 0.0.
To define the sheetmetal property Initial Bend Y-Factor on the Miscellaneous tab of the Material Definition dialog box.
PTC_BEND_TABLE
String
A character string with a maximum length of 31 characters
To define the sheetmetal property Bend Table on the Miscellaneous tab of the Material Definition dialog box.
PTC_HARDNESS
Real number
Positive real number including 0.0
To define the surface property Hardness on the Miscellaneous tab of the Material Definition dialog box.
PTC_HARDNESS_TYPE
String
A character string with a maximum length of 31 characters
To define the surface property Hardness Type of a material on the Miscellaneous tab of the Material Definition dialog box.
PTC_CONDITION
String
A character string with a maximum length of 31 characters
To define the surface property Condition on the Miscellaneous tab of the Material Definition dialog box.
PTC_XHATCH_FILE
String
A character string with a maximum length of 31 characters
To map a cross hatching pattern to cross sections created in a model that has a defined material. This is the Cross Hatching field in the Detailing area on the Miscellaneous tab of the Material Definition dialog box.
TEMPERATURE
Real number
All real numbers
To define Poisson's Ratio, Young's Modulus, Coefficient of Thermal Expansion and Thermal Conductivity as a function of temperature on the Material Definition dialog box.
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