Commands list
SORT A-Z
-
- EOS_GRUNEISEN
- MAT_BB
- MAT_BERGSTROM_BOYCE
- MAT_CABLE
- MAT_CERAMIC
- MAT_CONCRETE_2017
- MAT_CONCRETE_2018
- MAT_CONCRETE_2021
- MAT_CREEP
- MAT_ELASTIC
- MAT_FABRIC
- MAT_FABRIC_ISOTROPIC
- MAT_FLUID
- MAT_FOAM
- MAT_FORMING
- MAT_FORMING_R
- MAT_GRANULAR_CAP
- MAT_HJC_CONCRETE
- MAT_HOEK_BROWN
- MAT_HOT_FORMING
- MAT_HSS
- MAT_JC
- MAT_JC_FIELD
- MAT_JH_CERAMIC
- MAT_LEE_TARVER
- MAT_LIBRARY
- MAT_METAL
- MAT_MMC
- MAT_MMC_OST
- MAT_MM_CONCRETE
- MAT_MOONEY_RIVLIN
- MAT_MULTILAYER_ORTHOTROPIC
- MAT_OBJECT
- MAT_ORTHOTROPIC
- MAT_POWDER_BURN
- MAT_REBAR
- MAT_RIGID
- MAT_USER_X
- MAT_VISCOUS_FOAM
- MAT_VISCO_PLASTIC
- MAT_YEOH
- MAT_ZA
- PROP_DAMAGE_BRITTLE
- PROP_DAMAGE_CL
- PROP_DAMAGE_CL_0_45_90
- PROP_DAMAGE_CL_ANISOTROPIC
- PROP_DAMAGE_CL_REGULARIZE
- PROP_DAMAGE_HC
- PROP_DAMAGE_IMP
- PROP_DAMAGE_IMP_ISO
- PROP_DAMAGE_JC
- PROP_DAMAGE_JC_REGULARIZE
- PROP_DAMAGE_STRAIN
- PROP_THERMAL
Third-party add-ons
*PARTICLE_SOIL
"Optional title"
sid
type, gid, $dsf$, ., ., ., ., $t_{end}$
$\rho_0$, $k$, $\mu$, $\xi$, $v$, $\eta$
"Optional title"
sid
type, gid, $dsf$, ., ., ., ., $t_{end}$
$\rho_0$, $k$, $\mu$, $\xi$, $v$, $\eta$
Parameter definition
| Variable | Description |
|---|---|
| sid | Subdomain ID |
| type | Soil type |
| gid | Geometry ID |
| $dsf$ | Particle density scale factor (particles per unit volume) |
| $t_{end}$ | Particle deactivation time or FUNCTION (fcn) |
| $\rho_0$ | Density (this line is only used if type=USER) |
| $k$ | Grain contact stiffness |
| $\mu$ | Grain contact coefficient of friction |
| $\xi$ | Grain contact damping coefficient |
| $v$ | Fill fraction (typically between 0.58 and 0.62) |
| $\eta$ | Dimensionless shear cap coefficient |
Description
Discrete particle soil domain definition.
The subdomain ID (sid) determines in which order particles are filled into the global domain. In case subdomains are overlapping, the domain with the largest ID will overwrite (remove) particles belonging to domains with lower domain ID's.
Example
Generic mine in sand
Simple example of a generic TNT mine positioned in dry sand against a steel plate.
*UNIT_SYSTEM
SI
*PARAMETER
L = 2, "Plate size"
h = 0.02, "Plate thickness"
soff = 0.3, "Stand-off distance"
Np = 1000000, "Number of particles"
tend = 0.02, "Simulation time"
A = 340.0e6
B = 500.0e6
n = 0.3
*TIME
[%tend]
#
# --- MESH ---
#
*COMPONENT_BOX
"Target plate"
1, 1, 20, 20, 1
[-%L/2], [-%L/2], [%soff], [%L/2], [%L/2], [%soff+%h]
*CHANGE_P-ORDER
P, 1, 3
#
# --- MATERIAL ---
#
*MAT_METAL
1, 7800.0, 210.0e9, 0.3, 1
1
*FUNCTION
1
%A + %B*epsp^%n
*PROP_DAMAGE_CL
1, 3
100.0e6
*PART
"Target plate"
1, 1
#
# --- PARTICLES ---
#
*PARTICLE_DOMAIN
ALL, 0, [%Np]
[-%L/2], [-%L/2], -1, [%L/2], [%L/2], 1
1, 1, 1, 1, 1, 0
*PARTICLE_SOIL
1
DRY, 123
*PARTICLE_HE
2
TNT, 44
*PARTICLE_DETONATION
1
0, 0, -0.14, 0
#
# --- GEOMETRIES ---
#
*GEOMETRY_BOX
"Dry Sand"
123
[-%L/2], [-%L/2], -1, [%L/2], [%L/2], 0
*GEOMETRY_PIPE
"Generic mine"
44
0, 0, -0.18, 0, 0, -0.1, 0.125
*END
SI
*PARAMETER
L = 2, "Plate size"
h = 0.02, "Plate thickness"
soff = 0.3, "Stand-off distance"
Np = 1000000, "Number of particles"
tend = 0.02, "Simulation time"
A = 340.0e6
B = 500.0e6
n = 0.3
*TIME
[%tend]
#
# --- MESH ---
#
*COMPONENT_BOX
"Target plate"
1, 1, 20, 20, 1
[-%L/2], [-%L/2], [%soff], [%L/2], [%L/2], [%soff+%h]
*CHANGE_P-ORDER
P, 1, 3
#
# --- MATERIAL ---
#
*MAT_METAL
1, 7800.0, 210.0e9, 0.3, 1
1
*FUNCTION
1
%A + %B*epsp^%n
*PROP_DAMAGE_CL
1, 3
100.0e6
*PART
"Target plate"
1, 1
#
# --- PARTICLES ---
#
*PARTICLE_DOMAIN
ALL, 0, [%Np]
[-%L/2], [-%L/2], -1, [%L/2], [%L/2], 1
1, 1, 1, 1, 1, 0
*PARTICLE_SOIL
1
DRY, 123
*PARTICLE_HE
2
TNT, 44
*PARTICLE_DETONATION
1
0, 0, -0.14, 0
#
# --- GEOMETRIES ---
#
*GEOMETRY_BOX
"Dry Sand"
123
[-%L/2], [-%L/2], -1, [%L/2], [%L/2], 0
*GEOMETRY_PIPE
"Generic mine"
44
0, 0, -0.18, 0, 0, -0.1, 0.125
*END
