/FAIL/SPALLING
Block Format Keyword Describes the Spalling and Johnson-Cook failure model.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/FAIL/SPALLING/mat_ID/unit_ID | |||||||||
D1 | D2 | D3 | D4 | D5 | |||||
Pmin | Ifail_so |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
fail_ID |
Definitions
Field | Contents | SI Unit Example |
---|---|---|
mat_ID | Material
identifier (Integer, maximum 10 digits) |
|
unit_ID | Unit Identifier (Integer, maximum 10 digits) |
|
D1 | 1st
parameter. (Real) |
|
D2 | 2nd
parameter. (Real) |
|
D3 | 3rd
parameter. (Real) |
|
D4 | 4th
parameter. (Real) |
|
D5 | 5th
parameter. (Real) |
|
Reference strain
rate. (Real) |
||
Pmin | Pressure cutoff. (Real < 0) |
|
Ifail_so | Failure model flag.
(Integer) |
|
fail_ID | Failure criteria identifier. 3 (Integer, maximum 10 digits) |
Comments
- This failure model is available for Solid only.
- In this model two models are
combined. The first one is the Johnson-Cook failure model, and the second one is
the Spalling model (Spall is detected if (P = Pmin), the deviatoric stress is set to zero and pressure is required to be
compressive).
(1) Where,- T*
- Is computed in the material law, if this one is thermo plastic, like /MAT/LAW4 (HYD_JCOOK).
- 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).