Define Temperature Dependent Properties

Define elasticity modulus, Poisson’s ratio, thermal expansion coefficient, density, thermal conductivity, and specific heat capacity with respect to temperature.

  1. In the menu bar, click Settings > Material database.
  2. In the dialog, select a material to apply temperature dependent properties.
    Elasticity modulus, Poisson’s ratio, thermal expansion coefficient, density, thermal conductivity, and specific heat capacity allow temperature dependent input via material database.
  3. To add temperature curves, select Add Elasticity modulus-temperature curve, Add Poisson’s ratio-temperature curve, Add Thermal expansion-temperature curve, Add Density-temperature curve, Add thermal conductivity-temperature curve, and/or Add specific heat capacity-temperature curve.
    Note: Non-zero values should be set for temperature independent elasticity modulus, Poisson’s ratio, thermal expansion, density, thermal conductivity, and specific heat capacity along with temperature dependent properties to complete material definition. The curves are utilized only if the Use temperature dependent properties option is checked in thermal transient and/or structural thermal setup. Otherwise, the non-zero nominal values are used.
    1. Define the temperature curve(s) in one of the following ways:
    MethodProcess
    Import from CSV
    1. Click Import CSV.
    2. In the File browser, select the desired .csv file and click Open.
    Create manually
    • Click Add row.
    • Enter the temperature and relevant property values. At minimum, two points are required.
    The results are plotted in the XY graph in the dialog. You can use the scroll wheel to zoom in, the left mouse button to pan, or the Refit button to reset the graph.

CSV File Format

Elasticity-modulus-Temperature Curve

CSV Fields
Temperature – Numerical value
Elasticity-modulus or Elasticity – Numerical value
Note: Units are based on definition in material database settings.
Example File
Temperature,Elasticity-modulus
24, 195159.3
90, 192217.2
150, 187313.7
200, 183390.9

Poisson’s ratio-Temperature Curve

CSV Fields
Temperature – Numerical value
Poisson’s-ratio or Poisson or Poisson-ratio – Numerical value
Note: Units are based on definition in material database settings.
Example File
Temperature, Poisson’s-ratio
150, 0.28
260, 0.3
370, 0.32
480, 0.28

Thermal-expansion-Temperature Curve

CSV Fields
Temperature – Numerical value
Thermal-expansion or expansion – Numerical value
Note: Units are based on definition in material database settings.
Example File
Temperature, Thermal-expansion
100, 0.0000163
200, 0.0000167
300, 0.0000171
400, 0.0000176

Density-Temperature Curve

CSV Fields
Temperature – Numerical value
Density – Numerical value
Note: Units are based on definition in material database settings.
Example File
Temperature,density
20, 7.91E-09
90, 7.88E-09
200, 7.84E-09
320, 7.79E-09

Thermal Conductivity – Temperature Curve

CSV Fields
Temperature – Numerical value
Conductivity or thermal-conductivity – Numerical value
Note: Units are based on definition in material database settings.
Example File
Temperature,conductivity
1.136,238.168
77.273,243.893

Specific Heat Capacity – Temperature Curve

CSV Fields
Temperature – Numerical value
Capacity or specific-heat-capacity – Numerical value
Note: Units are based on definition in material database settings.
Example File
Temperature,capacity
17.647,862.245
75.63,918.112
134.454,948.724