Dear all,

I am recently studying using the viscoelastic model in ABAQUS. I understand that the viscoelastic model, which is based on the Prony series, can be calibrated either by using time-domain test data (creep) or from the frequency-domain test data (frequency sweep test - storage/loss modulus). 

When I calibrate the model by using creep data to calibrate the model, the model works fine in reproducing the creep behaviour as well as frequency-dependent behaviour in the analysis. However, if the VE model is calibrated from frequency-domain test data, the model is no longer able to predict creep. 

As a result, I would like to ask that if I could use the frequency domain data to calibrate the VE model if I want to simulate the creep behaviour of a material?

Regards,

Yeui-Lung