/MAT/LAW97 (JWLB)
Block Format Keyword This law describes the Jones-Wilkins-Lee-Baker EOS for detonation products of high explosives.
Where, is relative volume and and are material parameters.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/MAT/LAW97/mat_ID/unit_ID or /MAT/JWLB/mat_ID/unit_ID | |||||||||
mat_title | |||||||||
P0 | psh | IIBFRAC | |||||||
D | PCJ | E0 | C | ||||||
A5 | A2 | A3 | A4 | A5 | |||||
R1 | R2 | R3 | R4 | R5 | |||||
AL1 | AL2 | AL3 | AL4 | AL5 | |||||
BL1 | BL2 | BL3 | BL4 | BL5 | |||||
RL1 | RL2 | RL3 | RL4 | RL5 |
Definition
Field | Contents | SI Unit Example |
---|---|---|
mat_ID | Material
identifier. (Integer, maximum 10 digits) |
|
unit_ID | Unit Identifier. (Interger, maximum 10 digits) |
|
mat_title | Material
title. (Character, maximum 100 characters) |
|
Initial
density. (Real) |
||
Reference density used in
E.O.S (equation of state). Default = (Real) |
||
P0 | Initial
pressure (Real) |
|
Psh | Pressure
shift (Real) |
|
IBFRAC | Burn fraction calculation flag.
(Integer) |
|
D | Detonation
velocity. (Real) |
|
PCJ | Chapman Jouguet
pressure. (Real) |
|
E0 | Detonation energy per unit
volume. (Real) |
|
Parameter of equation of
state. (Real) |
||
C | Parameter of equation of
state. (Real) |
|
A1~A5 | Parameter of equation of
state. (Real) |
|
R1~R5 | Parameter of equation of
state. (Real) |
|
AL1~AL5 | Parameter of equation of
state. (Real) |
|
BL1~BL5 | Parameter of equation of
state. (Real) |
|
RL1~RL5 | Parameter of equation of
state. (Real) |
Example
#RADIOSS STARTER
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/UNIT/1
unit for mat
g mm ms
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/MAT/LAW97/7/1
JWLB - OCTOL 72/25
# RHO_I RHO_0
1.821 1.821
# P0 PSH IBFRAC
0 0 0
# D PCJ E0 W C
0.85381 .33755 .096034 .30731 .0104772
# A1 A2 A3 A4 A5
909.17 8.9469 .81495 0 0
# R1 R2 R3 R4 R5
15.941 5.4178 2.1956 0 0
# AL1 AL2 AL3 AL4 AL5
65.093 -179.81 156.04 .78487 0
# BL1 BL2 BL3 BL4 BL5
0 0 0 0 0
# RL1 RL2 RL3 RL4 RL5
3.6906 4.52693 5.8014 .95864 0
/ALE/MAT/7/1
0
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#enddata
Parameters
From Reference
Unit System is g, cm, ms, Mbar
PAX2 | PAX2A | OCTOL 77/25 | OCTOL 70/30 | |
---|---|---|---|---|
1.7370 | 1.770 | 1.821 | 1.803 | |
E0 | .086116 | .090798 | .096034 | .093757 |
D | .83460 | .85173 | .85381 | .84120 |
PCJ | .30502 | .32416 | .33755 | .32528 |
A1 | 909.13 | 909.14 | 909.17 | 549.98 |
A2 | 10.513 | 10.195 | 8.9469 | 5.8075 |
A3 | .92253 | .76191 | .81495 | .041638 |
R1 | 16.661 | 16.266 | 15.941 | 15.323 |
R2 | 5.9113 | 5.6415 | 5.4178 | 4.0477 |
R3 | 2.3618 | 2.1540 | 2.1956 | .62665 |
C | .011724 | .011325 | .0104772 | .0058269 |
.35956 | .36989 | .30731 | .27665 | |
46.898 | 69.018 | 65.093 | 1.5621 | |
-215.40 | -176.03 | -179.81 | ||
270.22 | 163.48 | 156.04 | ||
.88536 | .76214 | .78487 | ||
-.27665 | ||||
4.3128 | 4.0339 | 3.6906 | 1.0841 | |
5.7197 | 4.8830 | 4.52693 | ||
7.318 | 6.5455 | 5.8014 | ||
1.0892 | 1.0394 | .95864 |
Comments
- JWLB EOS is an updated model from JWL EOS. For further information about JWL parameters, refer to /MAT/LAW5 (JWL).
- JWLB EOS can be degenerated
into JWL EOS using:
; C=0;