2D Plane Strain Thermal Model Type

Use this option if the heat flow in one direction is negligible—for example, the temperature varies in two directions but not the third. This is typically the case for structures that are long in one dimension such as a long pipe or a heat sink. 2D plane strain models represent a slice of the actual 3D model.

In 2D plane strain models, all included geometry must lie in the XY plane of the Cartesian coordinate system that you select as the reference coordinate system for your model. If you are working with assemblies, all included geometry from the assembly components must lie at the same Z depth.

If your model meets these criteria, you can model a cross-section of your structure as a 2D plane strain model using shells or solids, or a combination of both. Depending on your choice, Creo Simulate takes one of the following actions:

• Pure solid models—Meshes your model using 2D solid elements. For solid modeling, you need to assign material properties to the cross-section surface. You should not assign shell idealizations to any of the curves in your model.

• Pure shell models—Meshes your model using 2D shell elements. For shell modeling, you should choose only edges when you select the geometry to include in your 2D plain strain model. Do not select surfaces. You also need to create simple or advanced shell idealizations on each curve you want Creo Simulate to mesh. You should not assign material properties to the cross-section surface.

• Mixed models—Meshes your model using both 2D solid and 2D shell elements. For mixed modeling, you need to create simple or advanced shell idealizations on each curve you want Creo Simulate to mesh. You must also assign material properties to the cross-section surface.

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