Hi all,

I am getting very noisy results in my metal rolling simulation in Abaqus/Explicit. I am modelling a half configuration (one roller and half the sheet) assuming plane strain. In my simulation, the sheet is given an initial velocity (equal to R*Omega, where R is the radius of the roller and Omega is the angular velocity of the roller) and this heads towards the already rotating roller (R = 0.1m and Omega = 6.283 rad/s).

My results are a bit weird. My displacements are nice and smooth, but my velocities and stresses are not. I understand that this is common that accelerations are noisiest and then velocities and then displacements, but I don't know how to deal with this. In my Lagrangian simulation, I am letting the process run for a certain amount of time and just extracting data points at a late time step, assuming a steady state has been reached (I will perform checks for this). Hence, I do not care about time, and when I researched what to do about noisy data in the documentation, I found this about filtering data ``The Abaqus/CAE X–Y data filters should only be applied to X–Y data whose X-value is time.", but my ``noise" is seen when I plot things like v_x (horizontal velocity component) against x on the surface of my metal sheet (see picture).

The extremely oscillatory part of this plot corresponds to the part of the sheet's surface that is in contact with the roller. I don't know how to go about removing this noise. Does anyone have any suggestions? My only ideas currently are that my mass scaling factor is too high (this is currently 2000) or that I will need to implement a smooth step amplitude curve of some sort.

Thank you,

Frank