I am learning a book called motion simulation and mechanism design with cosmotion 2007. But when i go through the seven chapter, I could not get the right result expected. I am especially perplexed by the red key points on the timeline under a free movement. Because I thought a part must be not able to move when there is a red key point on its timeline. And also, the graph of the reaction force of the concentric 3 is not the one in my textbook. Finally, it could get any result with a message "
Errors found parsing command. Command ignored.
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Errors found parsing command. Command ignored.
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Simulation can not continue.
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"when i re-calculate the simulation again. I very appreciate your help.
