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How much G is reasonable for free fall impact?

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assafwei

Materials
Jul 20, 2008
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Hi,

Not directly Ansys related, but I did run the analysis using Ansys.

I have an explicit simulation of a tank, weighs around 7.5 Kg with internal parts, falls from 1 meter. Since I never had a validation of such an experiment I am trying to understand if the numbers are right.

I get accelerations (after filtering the data and getting rid of the peaks) of internal parts in the tank of around 200G, there is alot of deformation in there (plastic tank) and some whiplash movements of the internal parts,and the deformation data, velocity and dynamics of the graphical results look good, but I cant wrap my head around the 200G issue. Is this number sane? is it possible to get these high Gs with a 1 meter free fall impact?

Thanks for your input.
 
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