October 11, 2020 at 12:40 pmAhmedDesokiSubscriber
Dear folksOctober 12, 2020 at 10:53 amAshish KhemkaAnsys EmployeennThe error message above indicates rigid body motion which indicates some of the part is unconstrained and can move freely. Using named selection can you see which part has the node indicated above. If it is bolt then you can use bonded contact for bolt head and shank to transfer pretension to clamped parts.nnRegards,nAshish KhemkanOctober 13, 2020 at 12:09 pmAhmedDesokiSubscriberThanksSorry, I didn't understand you fully. Also I feel I didn't explain my problem fully.nI model the bolt using Body-Body beam connection as shown in the picture above.nPlease explain where should I set the bonded contact?.My analysis type is modal. I want to calculate the natural frequencies of a bolted structure similar to the photo in my first post. To accurately model the bolts, I have to set the pretension force. But I noticed that bolt pretension can be set only for linear static analysis, and cannot be established for modal analysis.nAccordingly, I conclude that bolts cannot be simulated in Modal analysis in Ansys Mechanics. Am I correct?.Thanks and regardsnViewing 2 reply threads
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