相互平均コンプライアンス手法の複数周波数領域の感度評価

抄録

In general mechanical products, improvement of vibration quality and cost competitiveness is required to improve product quality. Development of a new frame structure that can reduce the vibration response of the components while satisfying the necessary strength and rigidity criteria and is lightweight and cost-reducible is required. Conventionally, strain and kinetic energy methods are often applied, but this method is effective when there is an outstanding eigenmode, in order to realize vibration reduction as a structural system, it is common for reinforcement (high rigidity) of the point where strain concentrates, so this is contradictory to cost reduction and is often not an efficient method. Therefore, we focused on Mutual Mean Compliance Method in this research. The sensitivity result differs with the response peak frequency to be reduced as the border, and the problem of unequivocal sensitivity result cannot be obtained. Also, since Mutual Mean Compliance Method shows sensitivity at a single frequency, a response reduction effect can be obtained at the target frequency due to improvement based on the sensitivity result, but response can be increased in other frequency regions. In order to solve such problems, we propose a method to calculate the sensitivity in multiple frequency domains and report the result of application and verification of this method to the vibration problem of mechanical structure.