Vibration is an important concern in the design of motorized machinery; resonance of certain parts may lead to their catastrophic failure. Thus, an FEA simulation was conducted to determine the first five normal modes of the enclosure.
The first five normal modes of vibration were determined to be 230.58, 459.73, 460.49, 461.24, and 476.60 Hertz, accordingly.
It is unlikely that any small electric pump’s motor would operate at more than 2000 RPM (33.3 Hz). Since none of the first five normal modes of the enclosure are close to this value, this design can be considered acceptable, because it is extremely unlikely that it would see any resonant behavior when pump is used.