Linear Thermoelastic Material
The Linear Thermoelastic Material node adds both the structural and heat transfer equations to the solid, in addition to the thermoelastic coupling. The Initial Stress and Strain, and Damping subnodes are available from the context menu (right-click the parent node) or from the Physics toolbar, Attributes menu.
For the Linear Elastic Material and Geometric Nonlinearity sections, see Linear Elastic Material as described for the Solid Mechanics interface.
Model Inputs
The Equilibrium Temperature T0 input defines the equilibrium temperature for the stationary solid. If there are temperature dependent material properties, this value defines their evaluation point. Other model inputs appear if the material properties depend on other quantities.
Thermal Expansion
The default Coefficient of thermal expansion α (SI unit: 1/K) uses values From material. For User defined enter a different value or expression and then for the Linear Thermoelastic Material, select Isotropic, Diagonal or Symmetric and enter one or more components for a general coefficient of thermal expansion α.
Enter a value or expression of the Strain reference temperature Tref (SI unit: K), which is the reference temperature at which the stationary solid is unstrained. If there are no initial thermal stresses, this value should be set to the same number as the Equilibrium Temperature (in the Model Inputs section). Setting a different temperature includes thermal stresses in the model, in addition to the thermoelastic stresses. The default is 293.15 K.
Heat Conduction
The default the Thermal conductivity k (SI unit: W/(m·K)) uses values From material. For User defined select Isotropic to define a scalar value, or Diagonal, Symmetric, or Anisotropic to enter other values or expressions in the field or matrix. The default is 0 W/(m·K).
Thermodynamics
The default Heat capacity at constant pressure Cp (SI unit: J/(kg·K)) is taken From material. For User defined enter another value or expression in the field. The default is 0 J/(kg·K).