/TH/INTER

Block Format Keyword Describes the time history for interfaces.

Format

Field	Contents	SI Unit Example
`thgroup_ID`	`TH` group identifier. (Integer, maximum 10 digits)
`thgroup_name`	`TH` group name. (Character, maximum 100 characters)
`var_ID`₁, ...`n`	Variables saved for `TH` (see table below). (Character, maximum 8 characters)
`Obj_ID`₁, ...`n`	Identifiers of the objects to be saved. (Integer)

Keyword	Object Saved	Variables
`INTER`	Interface	`FNX`, `FNY`, `FNZ`, `FTX`, `FTY`, `FTZ`, and `SFW`. `\|FNX\|`, `\|FNY\|`, `\|FNZ\|`, `\|\|FN\|\|`, \|`FX\|`, `\|FY\|`, `\|FZ\|`, `\|\|F\|\|`, `MX`, `MY`, `MZ` These absolute force variables are only for interface types /INTER/TYPE7, /INTER/TYPE10, /INTER/TYPE11, /INTER/TYPE19 and their sub interfaces (/INTER/SUB). `QFRIC` is available for interface TYPE7 and TYPE21.

Keyword

Object Saved

Variables

INTER

Interface

FNX, FNY, FNZ, FTX, FTY, FTZ, and SFW.

|FNX|, |FNY|, |FNZ|, ||FN||, |FX|, |FY|, |FZ|, ||F||, MX, MY, MZ

These absolute force variables are only for interface types /INTER/TYPE7, /INTER/TYPE10, /INTER/TYPE11, /INTER/TYPE19 and their sub interfaces (/INTER/SUB).

QFRIC is available for interface TYPE7 and TYPE21.

Keyword	Variable Group	Saved TH Variables
`INTER`	`DEF` `FN` `FT` `\|FN\|` `\|F\|` `Qfric`	`FNX`, `FNY`, `FNZ`, `FTX`, `FTY`, `FTZ` `FNX`, `FNY`, `FNZ` `FTX`, `FTY`, `FTZ` `\|FNX\|`, `\|FNY\|`, `\|FNZ\|`, `\|\|FN\|\|` `\|FX\|`, `\|FY\|`, `\|FZ\|`, `\|\|F\|\|` `QFRIC`

Keyword

Variable Group

Saved TH Variables

INTER

DEF

FN

FT

|FN|

|F|

Qfric

FNX, FNY, FNZ, FTX, FTY, FTZ

FNX, FNY, FNZ

FTX, FTY, FTZ

|FNX|, |FNY|, |FNZ|, ||FN||

|FX|, |FY|, |FZ|, ||F||

QFRIC

SFW is the work of forces along the interface. It is only available for interfaces type 14 and 15.
FNX: normal force in direction X
FNY: normal force in direction Y
FNZ: normal force in direction Z
FTX: tangent force in direction X
FTY: tangent force in direction Y
FTZ: tangent force in direction Z
|FNX| absolute value of normal force of the X-component of the contact force (1)
$\sum | FNX (S, m) |$

$FNX (S, m)$ is the X-component of the normal contact force applied to the master segment $m$ , due to slave node $S$ .
|FNY|: absolute value of normal force of the Y-component of the contact force
|FNZ|: absolute value of normal force of the Z-component of the contact force
|FX|: absolute value of the X-component of the contact force(2)
$\sum | FX (S, m) |$

$FX (S, m)$ is the X-component of the contact force applied to the master segment $m$ , due to slave node $S$ .
|FY|: absolute value of the Y-component of contact force
|FZ|: absolute value of the Z-component of contact force
MX: moment around X-axis of global system
MY: moment around Y-axis of global system
MZ: moment around Z-axis of global system
QFRIC: heat created from friction energy

Available names are listed in the two tables above.
In the first table, TH-variables are listed. If a TH-variable is requested, this variable is written.

In the second table, other variable groups are listed. If a variable group is requested, all the associated TH-variables are written at once.
Energy created by interface friction is included in the global contact energy output.