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/FAIL/WIERZBICKI - BAO-XUE-Wierzbicki Failure Model

Description

Describes the BAO-XUE-Wierzbicki failure model.

Format

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

/FAIL/WIERZBICKI/mat_ID/unit_ID

C1

C2

C3

C4

m

n

Ifail_sh

Ifail_so

Imoy

 

 

 

 

 

Optional line:

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

fail_ID

 

 

 

 

 
hmtoggle_plus1Flag Definition

Field

Contents

SI Unit Example

mat_ID

Material identifier

(Integer, maximum 10 digits)

 

unit_ID

Optional unit identifier

(Integer, maximum 10 digits)

 

C1

1st parameter

(Real)

 

C2

2nd parameter

(Real)

 

C3

3rd parameter

(Real)

 

C4

4th parameter

(Real)

 

m

5th parameter

(Real)

 

n

Hardening exponent

(Real)

 

Ifail_sh

Shell failure model flag

(Integer)

= 1: Shell is deleted, if clip0236 for one integration point or layer.

= 2: For each integration point, the stress tensor is set to zero, if clip0236  and shell is deleted, if clip0236 for all integration points or layer.

 

Ifail_so

Brick failure model flag

(Integer)

= 1: Solid element is deleted, if clip0236  for one integration point.

= 2: For each integration point, the deviatoric stress tensor vanishes, if clip0236.

 

Imoy

Failure 3D model (brick) flag

(Integer)

fail_weir_imoy_eq

 

fail_ID

(Optional) Failure criteria identifier (Comment 2)

(Integer, maximum 10 digits)

 
hmtoggle_plus1Example (Metal)

#RADIOSS STARTER

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

/UNIT/1

unit for mat

#              MUNIT               LUNIT               TUNIT

                  Mg                  mm                   s

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

#-  1. MATERIALS:

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

/MAT/PLAS_JOHNS/1/1

Metal

#              RHO_I

              2.8E-9

#                  E                  NU

               60000                  .3

#                  a                   b                   n           EPS_p_max            SIG_max0

                 370                 190                  .4                   0                   0

#                  c           EPS_DOT_0       ICC   Fsmooth               F_cut               Chard

                   0                   0         0         0                   0                   0

#                  m              T_melt              rhoC_p                 T_r

                   0                   0                   0                   0

/FAIL/WIERZBICKI/1/1

#                 C1                  C2                  C3                  C4                   m

                0.87                1.77                0.21                0.56                   2

#                  n  Ifail_sh  Ifail_so      Imoy

                 0.2         0         1         0

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

#enddata

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
hmtoggle_plus1Comments
1.For which is used in failure flag is defined below:

fail_wierzbicki

Where,

For Brick:

clip0244clip0245

For Shell:

clip0244;clip0246

Where, is the hydrostatic stress, is the von Mises stress, and J3 is the Third invariant deviatoric stress.

2.The fail_ID is used with /STATE/BRICK/FAIL and /INIBRI/FAIL. There is no default value. If the line is blank, no value will be output for failure model variables in the /INIBRI/FAIL (written in .sta file with /STATE/BRICK/FAIL option).

See Also:

Bao-Xue-Wierzbicki Failure in Theory Manual

Failure to Element/Material Compatibility