13.156. SURF156 - 3D Structural Surface Line Load Effect

Matrix or VectorMidside Nodes [1]Shape FunctionsIntegration Points
Pressure Load Vector With midside nodesEquation 11–19, Equation 11–20, Equation 11–213
Without midside nodesEquation 11–15, Equation 11–16, Equation 11–172

  1. Midside node setting is controlled by KEYOPT(4).

Load TypeDistribution
PressuresLinear along length for faces 1, 2, and 3; constant along length for face 4