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September 8, 2025 at 1:20 am
Dennis Chen
SubscriberHello, are there really simple example model of a unsymmetric modal analysis that must be solved (suposedly) with the MODOPT, UNSYM command in ansys mechanical?
I like to build a very simple example demonstrating this capability in Ansys Mechanical and I like to know if there's a simple real life example I can use.Â
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September 8, 2025 at 6:31 am
Erik Kostson
Ansys EmployeeÂ
HiÂ
Â
Please see this example in help (brake squeal – unsym, modal). As a side no need for commands in modal analysis set.:
In the Analysis Settings, set the Solver type to Unsymmetric (as mentioned in the below example)
https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/corp/v252/en/wb_wbtec/WBtecbrakeSolution.htmlWe also have it as a course/tutorial:
https://innovationspace.ansys.com/courses/courses/understanding-simulations-through-examples-part-2/lessons/break-squeal-analysis-lesson-1/All the best
Erik
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September 14, 2025 at 8:13 pm
Dennis Chen
SubscriberErik, Thank you!  I saw the same example in LS-Dyna too!.Â
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September 15, 2025 at 7:31 am
Erik Kostson
Ansys EmployeeThat is great - I have not seen that one (LS-Dyna) - many thanks,
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