弾性支持梁の振動に関する基礎的研究 : 質量を有する加振点が移動する場合

概要

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Many studies on the vibration of a beam received moving load have been reported in detail up to this point, but by all means, they are necessarey to analys complicated forced vibration. In this report, we discussed the dynamic characteristics of forced vibration from the natural mode of free vibration, and by the simple method, tried to estimate the effect of movement of a exciting point with mass on the vibration. The simple beam used in this experiment was a elastically supported and large-sized one. Numerical computation were made using the influence coefficients method and the transfer matrix method. Some of the numerical results were experimentally examined by moving a exciting machine which had unbalance weights. As the results of the analyses, it was confirmed that the shift of natural frequencies caused by the movement of a exciting point with mass was surmised by supposing the low order vibration supported in node points which were obtained from natural mode, and that of resonance amplitude would be more clear if the mode shape of practical amplitude was obtained.
湘南工科大学の論文
1988-03-26