接着接合はりの振動減衰能に与える温度の影響

概要

論文の詳細を見る
Machine structures assembled by adhesive bonding are expected to possess a high damping capacity because of the high damping capacity of the adhesive. In this study, the damping characteristics of an adhesively bonded beam in which two steel strips are joined by an adhesive and the effect of temperature are investigated. In the analysis, vibration modes of the bonded beam and strain energies distriburted in each strip and the adhesive in motion are analyzed by the finite element method. Then the damping capacity of the bonded beam is estimated using the strain energies and damping ratios of the two materials, namely, the steel strip and the adhesive, which were obtained beforehand independently by experiments. In the analysis, the temperature dependence of Young's modulus, Poisson's ratio and the damping ratio of the adhesive are considered. In order to confirm the estimated damping capacity, the damping ratios of the first three modes of vibration of the adhesively bonded beam were measured at several constant temperatures. The estimated values of the damping capacity are in good agreement with the experimental results. Thus, the effects of temperature, vibration modes and the thickness of the adhesive layer on the damping capacity of a bonded beam are clarified.
社団法人日本機械学会の論文
2002-09-25