/INIBRI/STRS_F
Block Format Keyword Describes the initial state (full stress in local system, values for each integration point) for a brick.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/INIBRI/STRS_F/unit_ID |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
brick_ID | Nb_integr | Isolnod | Isolid | nptr | npts | nptt | nlay | grbric_ID |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
Eint | |||||||||
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
brick_ID | Nb_integr | Isolnod | Isolid | nptr | npts | nptt | nlay | grbric_ID |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
Eint |
Definition
Field | Contents | SI Unit Example |
---|---|---|
unit_ID | Unit Identifier. (Integer, maximum 10 digits) |
|
brick_ID | Element
identifier. (Integer) |
|
Nb_integr | Number of integration
points. Corresponds to the property definition of this element. (Integer) |
|
Isolnod | Number of nodes of solid
element. (Integer) |
|
Isolid | Solid element
formulation. Corresponds to the solid element formulation in property definition of this element. (Integer) |
|
nptr | Number of integration
points in direction r. (Integer) |
|
npts | Number of integration
points in direction s. (Integer) |
|
nptt | Number of integration
points in direction t. (Integer) |
|
nlay | Number of layers for thick
shell elements. (Integer) |
|
grbric_ID | Brick group identifier.
4 (Integer) |
|
Plastic
strain. (Real) |
||
Stress. (Real) |
||
Stress. (Real) |
||
Stress. (Real) |
||
Shear
stress. (Real) |
||
Shear
stress. (Real) |
||
Shear
stress. (Real) |
||
Eint | Internal energy of solid
element. (Real) |
|
Volumetric
mass. (Real) |
Comments
- The initial state for brick may be defined by more than one block.
- If Nb_integr
> 1, the optional continuation lines must be repeated for each integration
point, if Keyword2 = STRS_F and 8-node
solid element with 1 or 8 integration point.
Format Line 4; Format Line 5; Format Line 6
- If Nb_integr
> 1, the optional continuation lines have to be repeated for each integration point,
if Keyword2 = STRS_FGLO and 16-node or 20-node
solid elements, 8-node HA8 elements, 8-node HSEPH elements, 6-node PA6 elements;
8-node HSEPH elements, 6-node PA6 elements, 10-nodes tetrahedron or Pentahedron 6
nodes.
Format Line 3; Format Line 4; Format Line 5
- Only one block of stress values needs to be defined when the elements are defined with the group of bricks grbric_ID. The values defined in the block will be applied to all elements in the group of bricks. All the elements defined in group of bricks must belong to the same part (/PART).
- Using
/INIBRI/STRS_F, you are assuming there is no density of
the deformed elements. Before the first cycle, Radioss will check consistency of the input stress tensor with material data
(stiffness and density):
(1) Where,- Density defined in the Starter file.
- Density in the state file.
If the stress is not fulfilled, Radioss will correct the diagonal entry of the stress tensor:(2) ( =1,2,3)