配管系の振動に関する解析および実験

抄録

In large plants, an accident occurs that the piping system vibrates and finally leads to destruction. The fluid flowing through the pipe is regarded as one of the causes, and two types of phenomena“Acoustic Induced Vibration ”and“ Flow Induced Vibration ”are generated. The natural frequencies of the pipe and of the fluid column in it was examined by modal analysis of ANSYS. In the experiment, the pipe and the fluid column vibrate each other at the mode anticipated by the calculation. At resonance frequency, the amplitude of vibration becomes large as the acoustic power of source increases.