기초조화가진을 받는 원형 외팔보의 비평면 비선형 현상

초록

Flexible circular beams when excited externally introduce a lot of dynamic characteristics. The non-linear elements that these flexible beams develop include non-linearity due to inertia terms, spring, and damping. They show different characteristics of motion from each other. In the modes of lower order, the non-linearity due to spring is prevalent, while the non-linearity due to inertia is prevalent in the modes of higher order. To analyze these effects, the non-linear phenomena are analyzed experimentally. when the response characteristics of non-linear virbration are analyzed using autospectrum, it is possible to analyze the subharmonic and superharmonic motion by comparison. The phase change is analyzed using the method of phase portrait, and the non-linear characteristics of response characteristics that are developed in flexible strectures can be predicted and applied to the stage of design.