Transcription of 12. VIBRATION ISOLATION
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12. VIBRATION ISOLATION
NOISE CONTROL VIBRATION ISOLATION J. S. Lamancusa Penn State 5/28/2002 12. VIBRATION ISOLATION introduction High VIBRATION levels can cause machinery failure , as well as objectionable noise levels. A common source of objectionable noise in buildings is the VIBRATION of machines that are mounted on floors or walls. Obviously, the best place to mount a vibrating machine is on the ground floor. Unfortunately (but fortunately for noise control consultants), this is not always possible. A typical problem is a rotating machine (such as a pump, AC compressor, blower, engine, etc) mounted on a roof, or on a floor above the ground floor. The problem is usually most apparent in the immediate vicinity of the VIBRATION source. However, mechanical vibrations can transmit for long distances, and by very circuitous routes through the structure of a building, sometimes resurfacing hundreds of feet from the source.
12.1 Introduction High vibration levels can cause machinery failure, as well as objectionable noise levels. A common source of objectionable noise in buildings is the vibration of machines that are mounted on floors or walls. Obviously, the best place to mount a vibrating machine is on the ground floor. Unfortunately (but
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