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View Full Version : Formula for Free Resonating Frequency of Cantilever to the Deflection


nyxynyx
Aug25-07, 09:16 PM
Is there a formula relating the free resonating frequency of a cantilever to its deflection? Thanks!

Gokul43201
Aug26-07, 11:43 PM
The resonant frequency is a function of material and geometric properties of the beam and is independent of the deflection.

For a cantilever beam of uniform cross-section,

f=\frac{1}{2\pi} \sqrt {\frac{8EI}{\rho Al^4}}

I: moment of inertia (depends on cross section)
E: Young's modulus
\rho: density
A: cross-section area
l: length