Workpiece Material Properties

The Workpiece material is used to describe the extrudate in metal extrusion. Typically, this material is applied to the components in the mesh that describe the negative volume created by the tool (such as, billet, pockets, feeder cavity, welding chamber, porthole etc.) Inside the user profile, we assign this material even to the boundary faces of the workpiece components. HyperXtrude supports the following constitutive models for metals:

  • Inverse Sine Hyperbolic model
  • Metal Forming Power Law model
  • Norton-Hoff model
  • Hensel Spittel model

Workpiece Material Properties Data Types

The following table contains descriptions of data types for Workpiece material properties:
Variable Name Value Type Remarks
ConstitutiveModel String in quotes "SineHypInv" "PowerLaw" "TemDependentNortonHoff"
Density Real (Constant) Density of the fluid
SpecificHeat Real(Constant/Function of Temp.) Function can be a TABLE1 or EXPRESSION
Conductivity Real (Constant/Function of Temp.) Function can be a TABLE1 or EXPRESSION
CoeffOfThermalExpansion Real (Constant) Value per unit volume
SolidusTemperatureLiqidusTemeprature Real (Constant) Real (Constant) Friction coefficient decreases from its full value at Solidus Temperature to zero at LiqidusTemperature
Temperature Dependence String in quotes "None "Coefficient" "exp (Q/RT)" "Exp(-Beta(DeltaT))" "Exp(A1T+A2T^2)"
Amplitude ConstantY Real (Constant/Function of Temp.) Only for PowerLaw with "Coefficients" for Temperature Dependence
Other Data Real (Constant) Data specific to different material models is described in the following sections.