抄録
The plumbing vibration can cause the noise and the damage. To solve these problem, you may control plumbing vibration by attaching viscoelastic materials as damping materials around the plumbing. However, you cannot predict the detailed vibration reduction effect in a design stage because the evaluation of the damping performance is generally carried out experimentally. Therefore, it is possiple that you cannot get an effective control on vibration effect or that the amplitude increases even if you attach a damping materials. In this report, we suggest a vibration analysis model of plumbing that viscoelastic damping materials are attached to to make it possible to predict the vibration reduction effefct beforehand. By this suggestion technique, we model the influence that damping materials give for plumbing vibration as added mass and added damping, and incorporate these in a 1-dimensional plumbing bendng vibration analysis model. By this method, we succeed in reducing calculation load than a calculation by the general 3-dimensional model while keeping the calculation precision. In other words, you can easily predict the damping effect of viscoelastic materials with high accuracy and suggest the most suitable design guidance.
