# MATUSHT

Bulk Data Entry Defines thermal material properties and parameters for user-defined thermal material.

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATUSHT MID PARAM1 VALUE1 PARAM2 VALUE2 PARAM3 VALUE3
PARAM4 VALUE4 etc.
etc.
PROPERTY PROP1 PROP2 PROP3 PROP4 PROP5 PROP6 PROP7
PROP8 etc.

## Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATUSHT 12 GROUP MATHT USUBID 5 NDEPVAR 1
PROPERTY 210.0 800.0 1700.0

## Definition

Field Contents SI Unit Example
ID Each MATUSHT Bulk Data Entry should have a unique ID.

No default (Integer > 0)

USUBID User subroutine ID. This allows you to define different types of material properties. This corresponds to the idu variable in the user subroutine.

Default = Blank (Integer > 0)

NDEPVAR Number of User-defined variables for output. NDEPVAR identifies the number of State(*) variables which are defined in the user-subroutine to be output to the H3D file.

Default = 0 (Integer ≥ 0)

GROUP User-defined group specified on the group argument of the LOADLIB entry. This field is used to identify the LOADLIB entry to load the corresponding library (.dll or .so).

(Character String)

PROPERTY Indicates that user-defined material property data are to be defined in the subsequent fields. 3 4 5
PROPi User-defined material property data. These values correspond to the props variable in the user subroutine. nprops variable in the user subroutine defines the total number of properties defined via the PROPi fields. 3 4 5

Default = blank (Real)

8. Regular Built-in OptiStruct output, like Grid Temperatures, Element Fluxes, and so on can be requested for any thermal material user-subroutine based model. Additionally, user-defined output can also be requested via the State(*) variable in the user-subroutine. The number of such State(*) variables should be identified on the NDEPVAR field.
9. MATUSHT supports the option to assign use-defined labels to state variables using the initusr subroutine. State variables are user-defined variables used to output non-standard results in an H3D file. By using the initusr subroutine you can specify the label of the state variable to display in the H3D file.