/MAT/LAW0 (VOID)
Block Format Keyword This material can be used to define elements to act as a void, or an empty space.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/MAT/LAW0/mat_ID/unit_ID or /MAT/VOID/mat_ID/unit_ID | |||||||||
mat_title |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
E |
Definition
Field | Contents | SI Unit Example |
---|---|---|
mat_ID | Material
identifier (Integer, maximum 10 digits) |
|
unit_ID | Unit Identifier (Integer, maximum 10 digits) |
|
mat_title | Material
title (Character, maximum 100 characters) |
|
Initial
density (Real) |
||
E | Young's
modulus (Real) |
|
Poisson's
ratio (Real) |
Example (Steel)
#RADIOSS STARTER
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/UNIT/1
unit for mat
Mg mm s
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#- 2. MATERIALS:
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/MAT/VOID/1/1
Void
# RHO E Nu
7.85E-9 210000 0.3
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#ENDDATA
/END
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
Comments
- Only law, mat_ID, and mat_title are used (refer to the keyword Materials).
- This additional data allows defining contact interfaces with void material and property: all kinds of input for interfaces will then be available (Igap =1, Stfac as a stiffness factor).
- Contact stiffness will be correctly calculated only when E, and t (thickness in property) are given.
- When density of the void material is defined, the mass of the material is accounted in kinetic energy calculation.