# MATUSR

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

## Format

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

## Example 1

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATUSR 12 USUBID 5 NDEPVAR 1 EXPAN ISO
DENSITY 0.25
PROPERTY 210000.0 0.4 320.0 500.0 0.0 180.0 1.2e+2
1.2e-6

## Definitions

Field Contents SI Unit Example
ID Each MATUSR 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 value corresponds to the idu variable in the user subroutine.

Default = Blank (Integer > 0)

NDEPVAR Number of user-defined state variables. This value corresponds to the nstate(*) variable in the user subroutine.

Default = 0 (Integer ≥ 0)

EXPAN Thermal expansion coefficients type defined on the PROPERTY continuation line. 5
ISO (Default)
Isotropic material.
ORTHO
Orthotropic material.
ANISO
Anisotropic material.

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 .dll.

(Character String)

DENSITY User-defined density.

No default (Integer > 0)

PROPERTY Indicates that user-defined material property data are to be defined in the subsequent fields. Thermal expansion coefficient data are defined at the end of the property data. 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. Thermal expansion coefficient data are defined at the end of the property data. 3 4 5

Default = blank (Real)

8. MATUSR also supports an option to assign defined labels to state variables. This can be accomplished by using the initusr subroutine. State variables are defined variables to output the 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.