Changing Total Time changes the result?

[sanju261991]

I am simulating a ball bouncing using Abaqus/Explicit. I have noticed that if the total time of the simulation is changed theresults also change, which I think does not make sense as the whole setup is the same except the total time.

Here is the plot of Kinetic Energy vs Time for 3 different total times.

After I zoomin, I would expect the plots to overlap, but I find that the plot do not overlap.

I am using automatic timesteping for the simulation. Also the 'Initial time increment' is the same for all the cases.

Can anyone explain why this happens?

Thanks