Hello Zhao,
Which element type and elform are you using for the blank? Is it shell elements? Or solids? What material are you using for the blank? Do the element type and elform and material model for the blank remain the same when the rotating wheel speed is 628 rad/min and when it is 3140 rad/min?
Have you checked your energy summary? Plot internal energy, kinetic energy, hourglass energy, and sliding energy together from the GLSTAT database and attach a screenshot here on this Forum post. Do you see any anomalies? Hourglass issue? Contact issue?
Is the wheel modeled as rigid?
Reno.
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