Hi!
I want to use the connector element "uniaxial behavior" for a dynamic analysis. The loading and unloading data of each component should depend on 2 other degrees of freedom. For this I generated a matrix, where I always vary one DOF and hold the other ones.
However, when I start the analysis, the Error occurs that "you must start all loading data at the origin", even though the first data point is indeed when all DOF are 0.

So my questions would be:
Is it generally not possible to define multiple loading curves for the uniaxial behavior connector?
Is there another way to model loading curves as a function of 3 DOF than the matrix input? (the standard functions shown in the manual dont suffice) 

Thank you all in advance!

(i added a snapshot of the first lines of the .inp connector definition)