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

  1. The surface traction is assumed to vary linearly along the element side between GA and GB.
  2. The surface traction is input as force per unit area.
  3. 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


  4. This card is represented as a pressure load in HyperMesh.