Specifying Physics Models and Material Properties
Create a physics continuum for the solid FE region, including physics models that account for the manifold displacement in response to thermal loads. Also specify the solid material and adjust the material properties to suit the manifold case.
- Create a physics continuum and name it Stress Analysis - Manifold.
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For the physics continuum,
Stress Analysis - Manifold, select the following models:
Group box Model Space Three Dimensional Time Steady Material Solid Optional Models Solid Stress Material Law Models (selected automatically) Specified Temperature The Specified Temperature model allows you to specify a temperature profile for the solid region, which is then used by the FE Stress solver to compute the resulting displacement.
Assign the physics continuum to the solid stress region:
- Select the node and set Physics Continuum to Stress Analysis - Manifold.
Define the material laws that approximate the behavior of the material. In this tutorial, you assume that:
- the stress-strain relationship in the material is isotropic linear elastic
- the thermal expansion in response to the applied thermal load is isotropic
- Expand the node.
- Rename the node to Isotropic Linear Elastic.
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For the
Isotropic Linear Elastic law node, select the following models:
Group box Model Material Stiffness Models Linear Elasticity Material Strain Measures Linear Strain (Small Strain) (selected automatically) Linear Elastic Material Models Isotropic Linear Elasticity Optional Models Thermal Expansion (selected automatically) Thermal Expansion Material Models Isotropic Thermal Expansion
Select an appropriate material for the manifold and define the material properties:
- Expand the node.
- Replace Al with Ductile Iron (Ductile Iron).
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Expand the node and set the following properties:
Node Property Setting Value 0.283 Value 1.38E-5 /K Value 138000 MPa Value 485 K - Save the simulation.