Cantilever beam is a fundamental element applied to bridges, buildings, airplane wings, disc driver levers, and so on. Understand the natural frequencies and mode shapes that appear when external forces are applied to the cantilever beam, and compare the theoretical calculations with the actually measured natural frequencies. This experiment will teach you the ability to design structures more robustly and safely.

Detailed Description

  • Studying vibration behaviors at natural frequencies
  • Visual observation of the mode shape at the natural frequency
  • Comparison of calculated natural frequencies and measured
  • Observation of nodal line at natural frequency
  • Studying of vibration problem solution
  • Applying of various supporting methods for cantilever beam
  • Study of dynamic behavior of cantilever beam
  • Observation of changes in natural frequencies due to beam thickness
  • Comparing the calculated natural frequency to the measured value
  • Measurement of change of natural frequency according to material (aluminum, steel)
  • Natural frequency and mode shape measurements
  • Observe mode shapes at each natural frequency
  • Observe the vibration sensitivity of the structure
  • Learn the solution from the vibration in structural resonances.
  • Natural frequency measurement using random excitation
  • Natural frequency measurement using sinusoidal sweep
  • Measure phase of input and output signals
  • FRF measurement using frequency analyzer
  • Understanding of Natural frequency, mode shape and FRF
Electromagnetic Shaker WSK-40
Rated force Sine : 40N, Random noise: 35N
Frequency range 5Hz – 5000Hz
Rated current 3.5A
Nominal impedance
Effective mass of amateur 150 gram
Max. acceleration Sine: 200m/s2, Random: 100m/s2
Max. velocity 1.5m/s
Max. displacement 10mm Pk-Pk
Power Amplifier WPA-1100
No of channels 2 channels
RMS Power 100W x2 max. 200W x 2 (2W load)
Min. coil impedance 2W
THD 0.01%
Frequency range 10Hz – 20kHz
Signal Generator GFG-8020H
Amplitude >20Vp-p (Open voltage )
>10Vp-p (50Ω Load)
Impedance 50Ω±10%
Display 4 digit LED Display
Frequency range 0.2Hz – 2MHz 7 Steps
Supply voltage AC100V/120V/220V/230V±10%, 50/60Hz
Environmental and physical characteristics
Power consumption Less than 200W
Ambient temperature 0~50°C
Size 1800(W) x 900(D) x 1600(H)mm
Weight 100 kg (including testing material)