立形ポンプの地震応答

概要

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It is important to design vertical pumps considering seismic responses in addition to rotor vibrations due to unbalances. This paper presents analytical and experimental studies to evaluate seismic responses on vertical pumps. In the experiment, a small vertical pump was tested to obtain its vibration characteristics during earthquakes. In the analysis, the seismic responses on the vertical pump were obtained using a one dimensional beam model under several assumptions. Especially, the method using linear impulse response is proposed to calculate the bearing loads due to collisions between the outer and inner casings during earthquakes. Numerical calculations using the above mentioned method were carried out. the analytical results coincide well with the test results.
1986-08-25