Block Format Keyword

/FAIL/WILKINS - Wilkins Failure Model

Describes the Wilkins failure model.

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
fail_ID

Field	Contents	SI Unit Example
mat_ID	Material identifier (Integer, maximum 10 digits)
unit_ID	Optional unit identifier (Integer, maximum 10 digits)
	Hydrostatic pressure exponent (Real)
	Deviatoric coefficient (Real)
Plim	Hydrostatic pressure limit (Real)
	Critical damage (Real)
Ifail_sh	Shell failure flag (Integer) = 1: Shell is deleted, if Dp > Dƒ for one integration point or layer. = 2: For each integration point, the stress tensor is set to zero, if Dp > Dƒ and shell is deleted, if Dp > Dƒ for all integration points or layers.
Ifail_so	Solid failure flag (Integer) = 1: Solid is deleted, if Dp > Dƒ for one integration point. = 2: For each integration point, the deviatoric stress tensor vanishes, if Dp > Dƒ.
fail_ID	(Optional) Failure criteria identifier (Comment 2) (Integer, maximum 10 digits)

#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/WILKINS/1/1

# Alpha Beta Plim Df Ifail_sh Ifail_so

1.8 .75 750 0.3 1 0

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

#enddata

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

Where,

Where, P is the hydro pressure

Where, S1, S2 and S3 are the deviatoric stresses.

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).

/FAIL/WILKINS