/MAT/LAW54 (PREDIT)

Block Format Keyword This law describes the predit material. This material law is only used with /PROP/TYPE36 (PREDIT).

Format

(1)	(2)	(3)	(5)	(7)	(9)
/MAT/LAW54/`mat_ID`/`unit_ID` or /MAT/PREDIT/`mat_ID`/`unit_ID`
`mat_title`
$ρ_{i}$
`E`		$ν$
	`fct_ID`	`A`	`B`	`N`	`Fscale`_yld
`A`_Y		`A`_Z	`B`_Y	`B`_Z	`C`_X
`D`_c		`R`_C	$ε_{\max}$

Definitions

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)
$ρ_{i}$	Initial density (Real)	$[\frac{kg}{m^{3}}]$
`E`	Young's modulus (Real)	$[Pa]$
$ν$	Poisson's ratio (Real)
`fct_ID`	Hardening parameter function identifier (optional). = 0 LAW2 is used and coefficients `A`, `B` and `N` are read. (Integer)
`A`	Hardening parameter yield coefficient `A`. (Real)
`B`	Hardening parameter yield coefficient `B`. (Real)
`N`	Hardening parameter yield coefficient `N`. (Real)
`Fscale`_yld	Yield function scale factor. Default = 1.0 (Real)	$[Pa]$
`A`_Y	Y shear coefficient of component yield. (Real)
`A`_Z	Z shear coefficient of component yield. (Real)
`B`_Y	Y moment coefficient of component yield. (Real)
`B`_Z	Z moment coefficient of component yield. (Real)
`C`_X	X torsion coefficient of component yield. (Real)
`D`_c	Critical damage (Real)
`R`_C	Critical failure (Real)
$ε_{\max}$	Damage strain limit (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/LAW54/1/1
Steel
#             RHO_I
             7.8E-9
#                 E                   NU
              21000                   .3
#            fct_ID                    A                   B                   N         Fscale_yld
                  0                   30                 150                  .9                  0
#                AY                   AZ                  BY                  BZ                 CX
                 .2                   .2                  .6                  .6                  0
#                DC                   RC             EPS_max
                 .8                    2                  .7
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#ENDDATA
/END
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

Comments

Scale factor is only used for fct_ID; otherwise /MAT/LAW36 (PLAS_TAB) is used.