AnsweredAssumed Answered

CosmosMotion 2008 3D contact

Question asked by Dave Kolacz on Mar 17, 2009
Latest reply on May 25, 2009 by David Demaria
Hello,
I am trying to model a gear train in CosmosMotion 2008. There are four spur gears with 6, 7, 8, and 9 teeth. The gear teeth use a radius instead of a true involute shape. The gears have about a 2.00 inch pitch diameter. The fastest gear is driven by a motor at 10 rpm. The motion study property manager has "use precise contact" checked. I've tried frame rates uo to 800 frames per second, accuracy from .0001 to .000000001, Integrator types Gstiff, Wstiff, and S12_GStiff.

No matter what I've tried: The assembly starts with clearance between the teeth but after about a quarter of a revolution the teeth penetrate each other about .010 inch (as seen in the graphic display).

Thanks for any suggestions or advice?

Dave

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