PLOADE1
Bulk Data Entry Defines an in-plane surface traction on the edge of CTPSTN and CQPSTN elements.
The PLOADE1 entry can be defined as follower loads in Large Displacement Nonlinear Analysis.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| PLOADE1 | SID | EID | PA | PB | GA | GB | THETA |
Example
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| PLOADE1 | 3 | 20 | 10.5 | 12.5 | 11 | 13 | 15.0 |
Definition
| Field | Contents | SI Unit Example |
|---|---|---|
| SID | Load set
identification number. No default (Integer > 0) |
|
| EID | Element identification
number. No default (Integer > 0) |
|
| PA | Surface traction at
grid point GA. No default (Real) |
|
| PB | Surface traction at
grid point GB. Default = PA (Real or blank) |
|
| GA, GB | Identification numbers
of two adjacent corner grid points on the element side. No default (Integer > 0) |
|
| THETA | Angle between surface
traction and inward normal to the line segment. Default = 0.0 (Real or blank) |
Comments
- The surface traction is assumed to vary linearly along the element side between GA and GB.
- The inputs of the surface traction are defined to be the amount of force per unit area.
- THETA is
measured counterclockwise from the inward normal of the straight line
between GA and GB, to the vector of
the applied load (Figure 1). Positive
pressure is in the direction of inward normal to the line segment.
Figure 1. Pressure Load Definition on Plane Elements