How to use DMA G', G'' and shear strain in MCalibration?

Hi,

I have DMA data in G', G'' and shear strain. Getting E' and E'' should be straight forward with G = E/2(1+v). But how to get the elongation strain in a way that MCalibration can use it as DMA data? 

When I transform shear data to principal stress/strain I get a both tension and compression. So I have a more complex loading than what MCalibartion is asking for. How should I use my shear DMA data in MCalibration?

/Christian