Pressure Load on Axisymmetric Elements
Description: Defines surface tractions to be used with solid axisymmetric elements.
Format:
Example:
| Field | Definition | Type | Default |
|---|---|---|---|
| SID | Load set identification number. | Integer > 0 | Required |
| EID | Element identification number. | Integer > 0 | Required |
| PA, PB | Surface tractions at grid points GA and GB. | Real | PA is the default for PB |
| GA, GB | Corner grid points. GA and GB are any two adjacent corner grid points of the element. | Integer > 0 | Required |
| THETA | Angle between surface traction and inward normal to the line segment. | Real | 0.0 |
Remarks:
- Load sets must be selected in the Case Control Section (LOAD = SID).
- PLOADX1 is intended only for the CTRIAX6 element.
- 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.
- 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. PLOADX1 Convention on Axisymmetric Elements