Introduction - If you have any usage issues, please Google them yourself
This subroutine is used to define non-uniform distributed mechanical loads (pressure and physical force).
When the load is a complex function of time and/or location, the user subroutine DLOAD is usually used.
A simple time function can usually be modeled with the * AMPLITUDE option.
Subprograms can also be used to define a load that varies with the number of elements and/or points of integration.