RSURF
Bulk Data Entry Defines a rigid analytical surface for explicit analysis.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| RSURF | ID | LABEL | TYPE | REFG | |||||
| ORIGIN | GID_O | ||||||||
| ORIENT | GID_Or | ||||||||
| RADIUS | R | ||||||||
| MASS | M | ||||||||
| INERTIA | IXX | IXY | IYY | IXZ | IYZ | IZZ |
Example
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| RSURF | 80159 | FIXED | PLANE | ||||||
| ORIGIN | 7483 | ||||||||
| ORIENT | 7484 |
Definitions
| Field | Contents | SI Unit Example |
|---|---|---|
| ID | RSURF entry unique identification
number. No default (Integer > 0) |
|
| LABEL | Label used to name the analytical surface. No default <String> |
|
| TYPE |
|
|
| REFG | Grid point identification,SPC ID number,
or SPCD ID number that specifies the
direction of motion. If this is blank, the grid point provided
in the ORIGIN field is used and no motion is
assumed. 1, 3, 4 Default = blank (Integer > 0) |
|
| ORIGIN | Flag indicating GID of the origin of the surface is to
follow. No default <String> |
|
| GID_O | Grid point identification number which specifies the origin
of the surface. No default (Integer > 0) |
|
| ORIENT | Flag indicating GID of the orientation of the surface is to
follow. No default <String> |
|
| GID_Or | Grid point identification number which specifies the
orientation of the surface. No default (Integer > 0) |
|
| RADIUS | Flag indicating value of radius of the spherical surface is
to follow. Only applicable for TYPE =
SPHERE. No default <String> |
|
| R | Radius of the sphere or spherical surface. Only applicable
for TYPE = SPHERE. No default (Real > 0.0) |
|
| MASS | Flag indicating value of mass of the surface is to
follow. No default <String> |
|
| M | Value of mass of the surface. No default (Real > 0.0) |
|
| INERTIA | Flag indicating value of moments of inertia are to
follow. No default <String> |
|
| IXX | Moment of inertia about X axis. No default (Real > 0.0) |
|
| IXY | Product of inertia about X and Y axis. No default (Real > 0.0) |
|
| IYY | Moment of inertia about Y axis. No default (Real > 0.0) |
|
| IXZ | Product of inertia about X and Z axis. No default (Real > 0.0) |
|
| IYZ | Product of inertia about Y and Z axis. No default (Real > 0.0) |
|
| IZZ | Moment of inertia about Z axis. No default (Real > 0.0) |
Comments
- MASS, INERTIA and REFG fields are optional. If these fields are not specified, the surface is assumed to be fixed in space.
- The origin should be the centre of gravity if motion is applied on the surface.
- SPCD can be applied on REFG to apply motion to the surface.
- If REFG and mass/inertia are defined but without SPC or SPCD, the contact forces on the rigid surface drive the motion of RSURF.