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randomness in the results!

 

I'm in front of a simple case with 3 spheres that fall due to gravity 
and impact a 4th sphere.
When I keep runing-stopping-running... I see that the trajectories are 
not always the same - meaning that same initial values give different 
results...
Do you have an idea of where such randomness could come from?

Bruno


_______________

Chareyre Bruno
Maître de conférence

Institut National Polytechnique de Grenoble
Laboratoire 3S (Soils Solids Structures) - bureau I08
BP 53 - 38041, Grenoble cedex 9 - France     
Tél : 04.56.52.86.21
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