/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) (4) (5) (6) (7) (8) (9) (10)
/MAT/LAW54/mat_ID/unit_ID or /MAT/PREDIT/mat_ID/unit_ID
mat_title
ρ i
E ν
fct_ID A B N Fscaleyld
AY AZ BY BZ CX
Dc RC ε max

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)

ρ i Initial density

(Real)

[ 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)

Fscaleyld Yield function scale factor.

Default = 1.0 (Real)

[ Pa ]
AY Y shear coefficient of component yield.

(Real)

AZ Z shear coefficient of component yield.

(Real)

BY Y moment coefficient of component yield.

(Real)

BZ Z moment coefficient of component yield.

(Real)

CX X torsion coefficient of component yield.

(Real)

Dc Critical damage

(Real)

RC 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

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