Im not clever enough.....can someone help me ?
I got a circular membrane ( small diameter, lets name it D ; material :ePTFE ) fixed on his edge.
Who can I know the cut frequencies of the system and the frequency band which will be able to go trough this filter ?
This is far more complex than I can easily answer. Basically you need to define your edge conditions more accurately. Is the disc behaving like a membrane? Is it pre-stretched? or is it a simply supported plate? or is it encastre (built-in) at the edges?
RD Blevin's "Formulas for Natural Frequency and Mode Shape" gives the following solutions for uniform disks simply supported