*GAP HEAT GENERATION

Introduce heat generation due to energy dissipation at the interface.

This option is used to modify the default gap heat generation model used to dissipate energy created by nonthermal surface interactions, such as frictional sliding or electric currents. The default is to convert all of the dissipated energy to heat and to distribute it evenly between the two interacting surfaces.

The GAP HEAT GENERATION option must be used in conjunction with the SURFACE INTERACTION option or in an Abaqus/Standard analysis with the GAP option.

This page discusses:

See Also
*GAP
*INTERFACE
*SURFACE INTERACTION
In Other Guides
Frictional Behavior
Thermal Contact Properties
Electrical Contact Properties

ProductsAbaqus/StandardAbaqus/ExplicitAbaqus/CAE

TypeModel data in Abaqus/Standard; History data in Abaqus/Explicit

LevelPartPart instanceAssemblyModel in Abaqus/Standard; Step in Abaqus/Explicit

Abaqus/CAEInteraction module

There are no parameters associated with this option.

 

Data line to define the gap heat generation in Abaqus/Standard

First (and only) line

  1. η , fraction of dissipated energy converted into heat generated by mechanical interaction ( η M ), electrical conduction in solids ( η E S ), and electrical conduction in liquids ( η E L ). If η M , η E S , or η E L is omitted, it is replaced by η . The default value is 1.0.

  2. f , weighting factor for the distribution of heat between the interacting surfaces generated by mechanical interaction ( f M ), electrical conduction in solids ( f E S ), and electrical conduction in liquids ( f E L ). If f M , f E S , or f E L is omitted, it is replaced by f . The heat flux into the secondary surface is weighted by f , and the heat flux into the main surface is weighted by 1 − f . By default, the heat is distributed equally between the two surfaces, f = 0.5 .

  3. η M , fraction of dissipated energy converted into heat generated by mechanical interaction.

  4. f M , weighting factor for the distribution of heat between the interacting surfaces generated by mechanical interaction.

  5. η E S , fraction of dissipated energy converted into heat generated by electrical conduction in the solids.

  6. f E S , weighting factor for the distribution of heat between the interacting surfaces generated by electrical conduction in the solids.

  7. η E L , fraction of dissipated energy converted into heat generated by electrical conduction in the liquids.

  8. f E L , weighting factor for the distribution of heat between the interacting surfaces generated by electrical conduction in the liquids.

Data line to define the gap heat generation in Abaqus/Explicit

First (and only) line

  1. η , fraction of dissipated energy converted into heat including any unit conversion factor. The default value is 1.0.

  2. f , weighting factor for the distribution of heat between the interacting surfaces. The heat flux into the secondary surface is weighted by f , and the heat flux into the main surface is weighted by 1 − f . By default, the heat is distributed equally between the two surfaces, f = 0.5 .