Hi Jon,

I) If I increase the loading by 10, the displacement will be increased by 10 as well, typical for isotropic behavior. And this makes me think that viscoelasticity is not being considered

Viscoelasticity has time as a variable in the computation of displacement, while elasticity is the instantaneous response. If you simulate 100 seconds when load=1, and you compare the displacement results at 100 seconds with the load=10, you should not have a ratio of 10 at t=100 due to the exponential behavior of the viscoelastic material.

Please create a Workbench Project Archive .wbpz file and attach it to your post above so I can take a detailed look at your data. Note there is a file size limit of 120 MB.