MODEL DYNAMICALLY UNSTABLE - Intergraph CADWorx & Analysis

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#34705 - 04/30/10 06:12 AM MODEL DYNAMICALLY UNSTABLE
kumar73 Member Registered: 05/23/05 Posts: 69 Loc: India	While performing the dynamic analysis I am getting the error message as shown in the attachment.Please Advice. Regards, akula Attachments _________________________ KUMAR
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#34709 - 04/30/10 07:58 AM Re: MODEL DYNAMICALLY UNSTABLE [Re: kumar73]
Dave Diehl Member Registered: 12/14/99 Posts: 2382 Loc: Houston, TX, USA	Do you have an anchor in your system? It may not be necessary but it's a good starting point. _________________________ Dave Diehl
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#34848 - 05/08/10 06:49 PM Re: MODEL DYNAMICALLY UNSTABLE [Re: Dave Diehl]
om nikam Member Registered: 08/23/07 Posts: 1 Loc: London, UK	I was getting same error and adding adequate supporting should solve the problem. Om
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#34850 - 05/08/10 08:54 PM Re: MODEL DYNAMICALLY UNSTABLE [Re: om nikam]
Richard Ay Member Registered: 12/13/99 Posts: 6226 Loc: Houston, Texas, USA	You have something (an element, a group of elements) that are undergoing "rigid body motion". Make sure all 6 DOFs are restrained for the model. Check any CNODE definitions you have for proper connectivity. _________________________ Regards, Richard Ay - Consultant
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