Why I am getting high viscous damping and artificial energy (ABAQUS)?

[compe_ad]

Hi all! I am doing explicit analysis. When I checked the output, I saw noise in the results. SO, when I checked the energies plot, I noticed that the viscous damping and artifical energy are significant. Why is that happening and how can it be lowered? FYI It's a cyclic loading so we have saw tooth shape for energy plot.

 

[FEA way]

ALLAE may indicate hourglassing (look for hourglass modes in the mesh) while ALLVD can come from damping defined by a user or present by default in Abaqus/Explicit analysis.