17.6.4.10. Viscoelastic Heating

This condition converts Viscoelastic loss to heat. The Viscoelastic Heating object must be scoped to a body whose material assignment includes the Viscoelastic material properties Prony Shear Relaxation and Prony Volumetric Relaxation, as defined in Engineering Data.

This page includes the following sections:

Analysis Types

Viscoelastic Heating is available for the following analysis types:

Dimensional Types

The supported dimensional types for the Viscoelastic Heating boundary condition include:

  • 3D Simulation

  • 2D Simulation

Geometry Types

The supported geometry types for the Viscoelastic Heating boundary condition include:

  • Solid

  • Surface/Shell: Supported for 2D only.

Topology Selection Options

The supported topology selection options for Viscoelastic Heating include:

  • Body

Applying a Viscoelastic Heating Boundary Condition

To apply a Viscoelastic Heating:

  1. On the Environment Context tab, select Viscoelastic Heating from the Conditions drop-down menu of the Structural group. Alternatively, right-click the Environment object or within the Geometry window and select Insert>Viscoelastic Heating.

  2. Define the Scoping Method as either Geometry Selection or Named Selection and then specify the geometry.

  3. Specify the Viscoelastic Loss Fraction.

Details Pane Properties

The selections available in the Details pane are described below.

CategoryProperty/Options/Description
Scope

Scoping Method: Options include:

  • Geometry Selection: Default setting, indicating that the boundary condition is applied to a geometry or geometries, which are chosen using a graphical selection tool.

    • Geometry: Visible when the Scoping Method is set to Geometry Selection. Displays the type of geometry (Body, Face, etc.) and the number of geometric entities (for example: 1 Body, 2 Edges) to which the boundary has been applied using the selection tools.

  • Named Selection: Indicates that the geometry selection is defined by a Named Selection.

    • Named Selection: Visible when the Scoping Method is set to Named Selection. This field provides a drop-down list of available user-defined Named Selections.

Definition

Viscoelastic Loss Fraction: This value defines the fraction of work that is converted to heat.

Suppressed: Include (No - default) or exclude (Yes) the boundary condition.

Mechanical APDL References and Notes

The following Mechanical APDL commands, element types, and considerations are applicable for this boundary condition.