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  1. JasonChen

    Vibration in a rectangular heating tank

    Using FEA and modal testing to confirm the resonance frequency. Then you tune it by FEA. goof luck, Jason
  2. JasonChen

    Compressor Bearing Vibration

    You said that your compressor has "suddenly" increased vibration readings with a dominant peak at 2X. I suspect your motor of softing foot. You have to check the tightness of feet as well as alignment before replacing the bearing. Regards, Jason
  3. JasonChen

    motor vibration increases over time during solo run

    Hi, Electricpete, Your problem looks like a critical speed or a frame resonance problem. You could compare the accelerometer readings from the fram top of your motor with the housing readings. In general, if the horizontal vibration at the frame top has not a obviuosly increasing than the...
  4. JasonChen

    Modal balancing of flexible rotors

    According to my experience, the gyroscopic effects would have significant affection when the rotor runs in high speed, such as 10k rpm or above. And the effect is also relative to the mass distribution of rotor. But generally speaking, the 1st mode of flexible rotor would not have obviously...
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