Structure Loads on Geometry

When you apply loads to geometry, keep the following points in mind:

• If you place a load on a curve, the load applies to any edges associated with that curve.

• If you place a load on a surface, the load applies to any elements associated with that surface.

• A point load can create theoretically infinite stresses (for structural loads) or fluxes (for heat loads) on a shell, solid, 2D solid, or 2D plate. A curve or edge load on a solid element can create theoretically infinite stresses (for structural loads) or fluxes (for heat loads).

Alternatively, you can create one or more small excluded elements near the point or curve with the help of Isolate for Exclusion AutoGEM Control, so that results are not distorted in surrounding elements.

• For a 2D plane strain model a point represents a line. You can apply a load to a point as either a total load or as a load per unit length using the Total Load or Force Per Unit Length options, respectively. Because the depth of the model is considered to be unity, these two options are equivalent.

• For a 2D axisymmetric model, a point represents a circle. You can apply a load to a point as either a total load or as a load per unit length using the Total Load or Force Per Unit Length options, respectively. For example, if you specify a load of 100 pounds per unit length, the total load on the entire circle will be 100 2 r pounds, where r is the radius of the circle. But if you specify a load of 100 pounds as the total load, then the total load remains 100 pounds.

Return to Guidelines for Structure Loads.