PLOADE1

Bulk Data Entry Defines an in-plane surface traction on the edge of CTPSTN, CQPSTN, CTPSTS, and CQPSTS 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

  1. The surface traction is assumed to vary linearly along the element side between GA and GB.
  2. The inputs of the surface traction are defined to be the amount of force per unit area.
  3. 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