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제안 방법
- But almost all researches have not severely considered these frequency ranges because they were treated as the isolation region in the transmissibility curve. Therefore, in this research, the evaluation method of the vibration-isolating ability of the rubber for the pipe system is suggested using frequency response function (accelerance) at the range of the high frequency. The parametric studies are performed experimentally in order to improve the vibrationisolating ability of the rubber with accelerance.
- Because the rubber material is sensitive to the environmental conditions such as temperature and oils, they should be considered when the isolator is installed. In this research, neoprene (CR) is applied for the material of rubber mount to the seawater-conveying pipes, and the vibration-isolating performance of it is evaluated with the stiffness of the rubber mount and the frequency response function (accelerance).
- In order to verify the effects of the hardness, rubber samples grading 45, 55 and 65 degree of shore “ A” hardness were manufactured with the same shape.
- Assuming that the acceleration from the test is concentrated to the center of the pipe, the forced vibration analysis was performed. Fig.
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