PLOADX1
Bulk Data Entry Defines a static surface traction on the CQAXI, CTAXI, CTRIAX6, CQAXIG and CTAXIG axisymmetric elements. The PLOADX1 entry can be defined as follower loads in Large Displacement Nonlinear Analysis.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| PLOADX1 | SID | EID | PA | PB | GA | GB | Theta |
Example
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| PLOADX1 | 3 | 20 | 10.5 | 12.5 | 11 | 13 | 15.0 |
Definitions
| Field | Contents | SI Unit Example |
|---|---|---|
| SID | Load set
identification number. (Integer > 0) |
|
| EID | Element identification
number. (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 surface traction is input as force per unit area.
- The direction of the surface traction is
within the plane defined by the element cross-section.
"Theta" is measured counter-clockwise from the inward normal
of the straight line between GA and GB, to
the vector of the applied load, as shown in Figure 1.
Positive pressure is in the direction of inward normal to the line segment.
Figure 1. Pressure Load on CTRAX6 and CTAXI Elements - This card is represented as a pressure load in HyperMesh.