摩擦クラッチに生じる自励振動に関する基礎的研究

抄録

Generating mechanism of self-excited vibration of a friction clutch due to asymmetricity in the stiffness matrix is studied theoretically. It was shown that asymmetricity in the stiffness matrix is generated by nonlinearity of the disk springs, which connect the friction disks in a rotating disk, and imperfection of the spring constants in circumferential direction. Eigenvalue analyses has shown the possibility of generation of the self-excited vibration. Furthermore, drastic increase in the real part of the eigenvalue occurs when two natural frequencies coincide. Generation condition of the self-excited vibration is sensitively changed depending on nonlinearity of the springs, thrust force and number of revolutions of the disk. The natural modes and time histories in the self-excited vibration are also investigated.