Surface-to-Surface Thermal Conductance (Abaqus)

When you are working with Abaqus as your solver and Thermal-Heat Transfer as your analysis type, you can use the Surface-to-Surface Thermal Conductance command to model conductive heat transfer between proximate or contacting surfaces.

In the Surface-to-Surface Thermal Conductance dialog box, you can choose to set thermal and mechanical contact properties.

Thermal contact properties

Use the Conductance Dependency options to model the conductive heat transfer as a function of the following:

• The clearance between the contacting surfaces (Clearance option).

• The contact pressure at the interface between the contacting surfaces (Pressure option).

• Both the clearance and the contact pressure (Clearance and Pressure option).

In Pre/Post, you use fields to define how the heat transfer varies with the clearance and/or contact pressure. For more information, see Fields.

When you export or solve your model, the software uses the options you specify in the Surface-to-Surface Thermal Conductance dialog box to define the *GAP CONDUCTANCE keyword in your Abaqus input file. For more information, see Thermal Contact Properties in the Abaqus Analysis Guide and *GAP CONDUCTANCE in the Abaqus Keywords Guide.

Mechanical contact properties

Use the Mechanical Contact Properties option to specify a Mechanical Contact Pair modeling object to define properties for the pairs of surfaces that may contact or interact during the analysis. For more information, see:

• Defining contact pairs (Abaqus Structural and Thermal analyses)

• Abaqus Analysis Guide: Defining Contact Interactions chapter, Defining contact in Abaqus/Standard topic.

• Abaqus Keywords Guide: *SURFACE, *CONTACT PAIR, *SURFACE INTERACTION, *SURFACE BEHAVIOR, *FRICTION

Surface smoothing

You can create a Surface Smoothing modeling object to specify the smoothing technique to use to improve the contact stress and pressure accuracy for axisymmetric, or nearly axisymmetric, surfaces. Three smoothing techniques are available: circumferential, spherical, and toroidal. A Surface Smoothing modeling object corresponds to the Abaqus SURFACE SMOOTHING parameter to the *CONTACT PAIR keyword.

For more information, see Surface Smoothing dialog box (Abaqus).

Where do I find it?

Application	Pre/Post
Prerequisites	A Simulation file as the work part and displayed partAbaqus as the specified solverThermal, Axisymmetric Thermal, or Dynamic Coupled Thermal-Structural as the specified analysis type
Command Finder	Surface-to-Surface Thermal Conductance
Simulation Navigator	Right-click Simulation Objects→New Simulation Object→Surface-to-Surface Thermal Conductance

How do I

Define thermal conductance between surfaces

Learn more

Automatic face pairing

Quick links

Command reference

Pre/Post video examples

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Surface-to-Surface Thermal Conductance (Abaqus), Simcenter 3D 2021.1 Series

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