Hello, i want to apply some given pressure distribution (in x-direction, see picture) to a part to calculate the resulting stress. For this i am using the UTRACLOAD-user-subroutine. For each integration point passed by the subroutine I interpolate linearly at the coordinate of the integration point and assign the resulting value to ALPHA of the subroutine. The result of the simulation shows much higher (5x) stresses than a simulation with another program (with the same material thickness and properties).
I am not sure whether the assignment of the ALPHAs is correct as i have done or if have to consider something else in the assignment. For example: Which dimension should the ALPHAs have in this case: Force/Length² or Force/Length with the length being the depth of the part or something like that. Or maybe another user-subroutine would be better for this usecase? For me UTRACLOUD seemed the most fitting. Also there are two integration points per element, so each element has two pressures assigned to it.
Some help would be much appreciated!

Abaqus ​​​​​​​