energy error too large ansys autodyn

[Charoenpon555]

Hi,
I currently run bullet impact on steel plate.
I modeled it as 2d axissymetry in workbench and run it in autodyn.
After some time of calculation, it showed error that enegyerror too large and problem was terminated.
Could anyone guide me what cause this problem and how to solve it.
Thank in advance
Charoenpon

 

[bence]

Charoenpon555,
energy error is a warning. it is telling you that the total energy in the problem is unbalanced. the message is issued when the balance is off by 5%. this could be a result of elements eroded, element sizes not small enough, loss of materials through boundaries if using Euler and other similar symptoms. if you just want to get the problem to run you can increase the energy error tolerance or disable it by using a large cycle number for the reference energy.