Varying loads specified by 3 points act on selected planar finite elements of a structure.
This type of load can also be distributed on bars, if it is applied to a cladding. If so, the load is distributed according to the trapezoidal and triangular method only.
A changing planar load can be defined by assigning values to 1, 2, or 3 selected points that are nodes of defined planar FEs or arbitrary points of defined coordinates.
A load distributed over an element surface can be applied to plate or shell structures. The direction of the load is defined with respect to the coordinate system axes. The planar load can be uniform or varying. For a varying load, specify the load value in 2 or 3 points. The value of a load at any point is then linearly interpolated or extrapolated on the basis of the specified values. This option is a simple and useful tool that lets you define a linearly varying planar load.