Main Help → All Commands → FEA Boundary Conditions → Stress
The Stress
command sets boundary conditions on all element faces along a path specified by a FixLine command. The format is:
Stress (dir),(stress1),<(stress2)>,<(stress3)>
where
(dir)
is the direction of the applied stress. It must be "n"
or "t"
(or 1 or 2) for normal or tangential stress. A positive tangential stress is defined as loading the element face in the counter-clockwise direction.(stress1),<(stress2)>,<(stress3)>
are 1 to 3 stresses (in pressure units). If one stress is given, the stress on the path will be constant. If two stresses are given, the stress will vary linearly between the two values at the endpoints of the path. If three stresses are given, the stress will vary quadratically along the path between the endpoint stresses ((stress1)
and (stress3)
) and the stress at the middle of the path ((stress2)
)Stress
command is only allowed for FEA analyses.