[He…] Posted March 17 Share Posted March 17 (edited) Hello, Is there any formula to calculate the strain rate in GOM software? I can find the mechanism and formulation of the "strain" calculation at GOM software in the manual, but I cannot find the strain rate calculation mechanism. I'm trying to figure out the strain rate calculation mechanism of the GOM by applying the finite difference method to the formula; change (d(epsilon)/dt) to ((epsilon(i+1)-epsilon(i))/(t(i+1)-t(i))) but the result are not same with the strain rate calculated by GOM software even though I change the time step at each stage. Thanks. Edited March 17 Link to comment Share on other sites More sharing options...

[Th…] Posted April 21 Share Posted April 21 I am not sure if there is some documentation about it somewhere, but as much as I know all "rate" calculations (speed and acceleration, too) are computed: ((eps(i+1)-eps(i-1))/(t(i+1)-t(i-1)) So it is close to what you suggested but taking one stage ahead and back into account to get an somehow averaged value for the current state. Link to comment Share on other sites More sharing options...

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