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aeroelasticity-modal daming coefficient

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Old   September 13, 2006, 12:57
Default aeroelasticity-modal daming coefficient
  #1
zhuzhuhua
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Now, I'm studying two dof airfoil's flutter,but i don't know how to choose the modal daming coefficient for Isogai wing model! help me please,thank you!
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Old   September 13, 2006, 14:06
Default Re: aeroelasticity-modal daming coefficient
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Mani
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try zero, first. as far as I remember, structural damping is not critical in this case, and is usually very small, anyway. if comparing with somebody else's results (Isogai's) you should know what parameters they used.
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Old   September 14, 2006, 02:02
Default Re: aeroelasticity-modal daming coefficient
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Luca Cavagna
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Yes, Mani is rigth. Flutter velocity should not depend strcitly on the structural damping (consider if you want a g damping factor of 0.01). Luca
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Old   September 28, 2006, 01:40
Default Re: aeroelasticity-modal daming coefficient
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zhuzhuhua
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Now,i have another problem,the responce of displacement doesn't converge,as well as attack angle.i use loosely coupled method between cfd solver and csd solver,Could you please tell me what measures should be taken to resolve this problem? it nearly drives me crazy! thank you!!
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