An air-conditioning unit weighting 1,200 lb is mounted on two simply supported beams as shown below. The motor of the AC unit rotates at a frequency range of 12 to 18 Hz generating a vertical out-of-balance force of 60 lb. Determine the peak amplitudes of the steady-state deflection and acceleration of the beams.
The span of both beams is 8 ft. The AC unit is modeled as a block. The mass density is calculated so that the weight is 1,200 lbs.
In this lesson, you learn the following:
- Creating a harmonic study from a frequency study
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Setting the properties of the harmonic study
- Defining a harmonic load
- Setting damping properties
- Setting result options
- Viewing the results of harmonic analysis