Reno Genest
Ansys Employee

I don't know why the model has a rotation speed of 3.14 rad/s. Maybe it is a typo?

I would use your own rotation and feed speed for your  model. If the drill does not "see" the particles, then you have a contact problem and you need to troubleshoot it. Look at the SPG training on ALH to see which contacts are recommended with SPG particles. Are you using the right contact type? Is the contact defined properly? Have you tried increasing the contact stiffness? What about bucket sort frequency? Have you tried reducing TSSFAC? You will find more information about contacts here: