305 自己同期現象における非線形自励振動子間の結合形態に関する検討

概要

論文の詳細を見る
The purpose of this research is to investigate influences of coupling elements placed between nonlinear self-excited oscillators on the self-synchronization phenomena. We newly developed a simple nonlinear model that is modified from the dynamical model studied in the previous report. The new model is composed of two nonlinear self-excited oscillators subjected to Coulomb friction and a mass block. They are connected by coil-springs and dashpots. In the present model, the stick-slip vibration caused by the friction forces often generates. The self-synchronized solutions and the stability are computationally analyzed by approving the improved shooting method. As a result, we confirmed the verification of the present model by comparing numerical results and experimental results. The characteristics of the self-synchronized solutions are investigated, and the frequencies and vibration patterns closely correspond to the undamped natural frequencies and characteristic modes, respectively. In addition, we also examined that the existence regions of the self-synchronized solutions vary depending on the system parameter of the mass block. Then it was proven that appropriately setting the parameter allows the regions to extend widely.
一般社団法人日本機械学会の論文
2011-09-05