Vibration of membrane

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Vibration of membrane Chladni figures
Boguslaw Lanuszny - Poland
HST-2002
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If you stretch a membrane over the ring and
activate it by a speaker, you can get different
shapes of modes of vibration.
membrane
sound generator
speaker
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Relations between frequency and shapes is given
by solving the differential equation for membrane
and are function of two integer n main quantum
number (1, 2, 3) l second quantum number (0,
1, 2 .. n-1) Theoretical and measured values of
frequency are presented on next slides
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Theoretical and experimental data
n
l
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Theoretical and experimental data
n
l