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Converting viscoelastic Prony Series terms from ABAQUS to LS-DYNA

Mukunda Madhava Nath's picture

In Abaqus, 

g(t) = 1 - ∑(gi * (1-exp(-t/taui)); 

in which g and gi are dimensionless. 

 

In LS-DYNA, 

G(t) = ∑( Gi * exp(-betai * t) ); 

in which G and Gi are in N/m2

 

Based on this information, how do we transform the Prony Series terms from one code to another or vice-versa given I don't have the test data available.

 

Also, if I have the test data, what is a recommended process to determine Prony Series terms from the same?

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