Formula for Free Resonating Frequency of Cantilever to the Deflection

Join the discussion
Registration is free. Start your own thread to ask a follow-up.
1 reply · 14K views
nyxynyx
Messages
34
Reaction score
0
Is there a formula relating the free resonating frequency of a cantilever to its deflection? Thanks!
 
Engineering news on Phys.org
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,

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

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