prony parameters from generalized three parameters Maxwell model

[maud]

Hi,
I need to be clarified :
I have (from papers, stress relaxation test data) : the generalized three parameters Maxwell model, meaning :

sigma(t)=epsilon(E1 exp (-t/to1)+E2 exp (-t/to2)+E3 exp (-t/to3))

I looked at how the prony parameters are defined in Abaqus and so i would say that
g_i(prony) for me will be : Ei/(E1+E2+E3)

Am I going right ?

[Jorgen]

It is late at night here :oops:
but that looks about right to me...

I recommend that you try it out to see if it works as you intended.

-Jorgen