Objective: (3 sentences)
The goal of this experiment is to study the vibrational characteristics of a cantilever beam subjected to dynamic excitation. Students will use a shaker to excite the beam and a laser system to monitor its displacement, allowing them to analyze the beam's response at various frequencies. This will include identifying resonance frequencies, mode shapes, and understanding how the beam behaves under vibrational forces.
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Rao, Singiresu S. "Mechanical vibrations." (1995).
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2. Pre-Lab Quiz
Quiz Date: xxxxxx
The quiz will cover the theory of vibrations, modal analysis, and cantilever beam behavior.
Review resonance frequencies, vibration modes, and laser monitoring principles.
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Step-by-Step Instructions:
Set up the cantilever beam and shaker system.
Make sure the amplifier is connected and the amplitude gain is at zero before opening.
Check the stability of the cantilever beam with the shaker.
Adjust the amplifier gains and the wave properties from the waveform generator.
Excite the beam at various frequencies.
Use the laser system to measure displacement and amplitude.
Identify resonance frequencies and vibration modes.
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5. Post-Lab Report
Due Date: xxxxxx
Submit a report analyzing:
Resonance frequencies and mode shapes.
The vibrational response of the beam at different excitation frequencies.
Comparison of experimental data with theoretical predictions.
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[Video Tutorial on Vibration Analysis] (Link)
[Sample Report Format] (Link)
Responsible TAs:
TA Name, emailGürdeniz Neşer, gneser18@ku.edu.tr