振動レベル最適化に関する基礎的研究 : ピーク感度と満足化トレードオフ法による最適化システムの構築

抄録

If we try to modify the structure for the purpose of reducing vibration level, not only a specific vibration level but also other vibration level which is affected by that modification should be estimated. Such estimation becomes necessary because vibration level has complex contradictory performances. Therefore, it is hoped to develop a system which is able to find the most suitable way of modification while the contradictory performances of vibration level are accurately predicted. In this paper, we construct an optimization system for vibration level by using the satisficing trade-off method and sensitivity analysis at the peak frequency. By using the satisficing trade-off method, one of multiobjective linear programming methods, we can obtain the most suitable vibration level targeting plural vibration phenomena, under careful consideration for the contradictory performances of vibration level, and can compose a system easy for designers to use. By using the sensitivity analysis at the peak frequency, we can calculate the accurate sensitivity of vibration level. Finally, the validity of this optimization system for vibration level is verified by applying some optimal designs to a simple mass-spring model.