MATMDS

Bulk Data Entry Defines material properties and parameters through an interface to Altair Multiscale Designer® allowing you to include a much wider range of different material models.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATMDS MID AMAT OPTION AOPT          

Example

ASSIGN,MATMDS,USRMAT,D:/mymaterial.dat

ASSIGN,MATMDS,FIBMAT,D:/myfibmat.dat
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATMDS 32 USRMAT FIBER FIBMAT          

Definitions

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

No default (Integer > 0)

  
AMAT Identifies the name of the ASSIGN entry which identifies the Multiscale Designer material file.

No default (<Character String>)

  
OPTION Identifies the entity to which the subsequent material is applied.
FIBER
DRAPE
blank (Default)
  
AOPT Identifies the name of the ASSIGN entry which identifies the Multiscale Designer material file for the specified entity in the OPTION field.

Default = blank (<Character String> or blank)

  

Comments

  1. MATMDS is available to interface OptiStruct with Multiscale Designer to include a much wider range of different material models.

    Multiscale Designer is an efficient tool for development and simulation of multiscale material models of continuous, woven, and/or chopped fiber composites, honeycomb cores, reinforced concrete, soil, bones, and various other heterogeneous materials.

    Applications include multiscale material modeling for design, ultimate failure, statistical- based material allowables, fatigue, fracture, impact, crash, environmental degradation, and multiphysics simulations and provides plugins to commercial FEA solvers OptiStruct and Radioss.
    • Develop multiscale material models using forward homogenization and inverse optimization technologies
    • Built-in parametric unit cells for unidirectional, woven, chopped, and particulate fiber composites
    • Simulate nonlinear material behavior including ultimate failure at the micro-scale
    • Obtain virtual material allowables supported by test and perform fatigue analysis
    • Efficient plug-ins to commercial FEA codes OptiStruct and Radioss
  2. Material model data files from Multiscale Designer can be located anywhere on the machine and can be identified using the ASSIGN,MATMDS command.
  3. If the MATMDS entry is specified, then OptiStruct looks for the Multiscale Designer installation within the same Mechanical Solvers installation from which the OptiStruct run is initiated. The MDSDIR I/O Options Entry can also be used to specify the Multiscale Designer installation location, if it has been installed in a different location.
  4. MATMDS is supported for both Shell and Solid elements.