/INISHE/FAIL
Block Format Keyword Describes the failure criteria for a shell.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| /INISHE/FAIL/unit_ID | |||||||||
| shell_ID | Nlay | npg | nptt | lay_ID | fail_ID | Ifail_typ | Nvar | mat_ID | |
| V1 | etc | etc | VN | ||||||
Definitions
| Field | Contents | SI Unit Example |
|---|---|---|
| unit_ID | Unit Identifier. (Integer, maximum 10 digits) |
|
| shell_ID | Element
identifier. (Integer) |
|
| Nlay | Number of
layers. (Integer) |
|
| npg | Number of surface
quadrature points.
(Integer) |
|
| nptt | Integration point number
through the thickness. It corresponds to the property definition of this element. (Integer) |
|
| lay_ID | Layer to initialize
identifier. (Integer) |
|
| fail_ID | Failure criteria to
initialize identifier. (Integer) |
|
| Ifail_typ | Failure criteria number to
initialize. 2 (Integer) |
|
| Nvar | Number of failure criteria
variables to initialize. (Integer) |
|
| mat_ID | Material identifier to
initialize. (Integer) |
|
| V1 | First failure criteria
variable value. (Integer) |
|
| VN | Nth
failure criteria variable. (Integer) |
Example (One Failure Model)
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/MAT/PLAS_JOHNS/2
metal
# RHO_I
7.85E-6 0
# E Nu
210 .3
# a b n EPS_max SIG_max0
.5 .5 .5 0 0
# c EPS_DOT_0 ICC Fsmooth F_cut
0 0 0 0 0
# m T_melt rhoC_p T_r
0 0 0 0
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/FAIL/BIQUAD/2
# c1 c2 c3 c4 c5
0. 0.0 0.2 0.00 0.0
# P_thickfail M-flag
.0 1
# Fail_ID
4712
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/PROP/SHELL/2
thick 1.8 mm
# Ishell Ismstr Ish3n Idrill
24 0 0 0
# hm hf hr dm dn
0 0 0 0 0
# N Istrain Thick Ashear Ithick Iplas
5 0 1.8 0 1 1
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|Output state file (*.sta)
For failure model (fail_ID 4712) there are 9 failure criteria
variable (3 variable printed each line) for each element and each integration point
printed.
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|----10---|
/INISHE/FAIL
#------------------------ REPEAT --------------------------
# SHELLID NLAY NPG NPTT ILAY IRUPT IRUPT_TYP NUVAR IMAT
# REPEAT K=1,NPG
# UVAR(1,I) .............
# ............... UVAR(NUVAR,I)
#---------------------- END REPEAT ------------------------
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|----10---|
1633 1 1 5 1 4712 30 9 2
1.5546450758446E-01 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
2.7336348980615E-02 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
1.2742259369270E-02 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
1.4218173386659E-01 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
1.5270397038983E-01 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|----10---|Example (Two Failure Models Applied on One Material)
If two different failure models (with two different fail_ID 4712
and 5712) for one material are defined, then both failure criteria for each element
will be printed in state
file.
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/MAT/PLAS_JOHNS/2
metal
# RHO_I
7.85E-6 0
# E Nu
210 .3
# a b n EPS_max SIG_max0
.5 .5 .5 0 0
# c EPS_DOT_0 ICC Fsmooth F_cut
0 0 0 0 0
# m T_melt rhoC_p T_r
0 0 0 0
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/FAIL/BIQUAD/2
# c1 c2 c3 c4 c5
0. 0.0 0.2 0.00 0.0
# P_thickfail M-flag
.0 1
# Fail_ID
4712
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/FAIL/JOHNSON/2
# D1 D2 D3 D4 D5
0 .18 -3.9 0 0
# EPS_0 Ishell Isolid
0 2 0
# Fail_ID
5712
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/PROP/SHELL/2
thick 1.8 mm
# Ishell Ismstr Ish3n Idrill
24 0 0 0
# hm hf hr dm dn
0 0 0 0 0
# N Istrain Thick Ashear Ithick Iplas
5 0 1.8 0 1 1
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|Output state file
(*.sta)
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|----10---|
/INISHE/FAIL
#------------------------ REPEAT --------------------------
# SHELLID NLAY NPG NPTT ILAY IRUPT IRUPT_TYP NUVAR IMAT
# REPEAT K=1,NPG
# UVAR(1,I) .............
# ............... UVAR(NUVAR,I)
#---------------------- END REPEAT ------------------------
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|----10---|
1633 1 1 5 1 4712 30 9 2
1.5546450758446E-01 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
2.7336348980615E-02 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
1.2742259369270E-02 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
1.4218173386659E-01 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
1.5270397038983E-01 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
0.0000000000000E+00 0.0000000000000E+00 0.0000000000000E+00
1633 1 1 5 1 5712 1 1 2
3.7125925607302E-01
2.4534298189906E-02
2.8677640123729E-02
1.0000000000000E+00
1.0000000000000E+00
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|----10---|Comments
- If npg > 1, nptt > 1, and Nlay > 1, the lines with Real values have to be repeated for each integration point.
- Every failure model has a
Ifail_typ which is used to identify the failure model to
initialize for the element. Verify failure law to element type compatibility in
/FAIL.
- Keyword
- Ifail_typ
- /FAIL/BIQUAD
- 30
- /FAIL/CHANG
- 13
- /FAIL/CONNECT
- 20
- /FAIL/EMC
- 27
- /FAIL/ENERGY
- 11
- /FAIL/FABRIC
- 31
- /FAIL/FLD
- 7
- /FAIL/HASHIN
- 14
- /FAIL/HC_DSSE
- 32
- /FAIL/JOHNSON
- 1
- /FAIL/LAD_DAMA
- 18
- /FAIL/NXT
- 25
- /FAIL/ORTHSTRAIN
- 24
- /FAIL/PUCK
- 16
- /FAIL/SNCONNECT
- 26
- /FAIL/SPALLING
- 8
- /FAIL/TAB1
- 23
- /FAIL/TBUTCHER
- 2
- /FAIL/TENSSTRAIN
- 10
- /FAIL/USERi
- 4, 5, 6
- /FAIL/WIERZBICKI
- 9
- /FAIL/WILKINS
- 3