Manufacturing Solutions

Workpiece Material Properties

Workpiece Material Properties

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Workpiece Material Properties

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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:

•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)

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.