Manufacturing Solutions

# 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, bearing 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:

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) |
Thermal expansion coefficient |

VolumetircHeatSource |
Real (Constant) |
Value per unit volume. |

SolidusTemperature LiqidusTemperature |
Real (Constant) Real (Constant) |
Friction coefficient decreases from its full value at SolidusTemperature to zero at LiqidusTemperature |

Temperature Dependence |
String in quotes |
"None" "Coefficients" "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. |