CLMPFREQ,len,wid,thc,den,ymod,sel
Free vibration frequency of a double-clamped beam

len         length of the beam in µm
wid        width of the beam in µm
thc         thickness of beam in µm
den       density of the material of the beam in kg/m³
ymod    Young's modulus in GPa
sel         number denoting the selected result.
              Use 2 for first modal frequency

Notes

This design interface can be used to determine the fundamental frequency of vibration of a double-clamped beam.  The two ends of the beam are rigidly fixed. For this analytical solution, width of the beam has only minimal influence on the fundamental frequency of vibration.

The plot shows the amplitude frequency relationship for the given beam. It shows the first resonance frequency as a sharp rise in amplitude. Using the cross hair tool, the resonant frequency and the corresponding relative amplitude can be obtained.