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Excessive inertial forces when starting a constant rotary speed model in Dynamic/Explicit

Excessive inertial forces when starting a constant rotary speed model in Dynamic/Explicit

Excessive inertial forces when starting a constant rotary speed model in Dynamic/Explicit

(OP)
Hello All,

I'm analyzing the stresses in a crankshaft. The crankshaft rotates at a constant speed. The problem is when the simulation starts the stresses go from 0 to 1800 MPa (much more than the elastic limit), due to the inertial forces (high initial acceleration to pass from 0 to 224 rad/s), and they become stable at 0.15s.
My question is how to avoid this period time of stabilization (which means hours of analysis), if I have predefined a constant rotating speed and not accelerating from 0 to 224 rad/s, if it could be possible any solution to eliminate the period of start and why it appears.

RE: Excessive inertial forces when starting a constant rotary speed model in Dynamic/Explicit

(OP)
Thanks you in advance

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