空間に固定した点で拘束された回転円板の安定性 : 減衰を考慮した場合

概要

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The stability of a rotating elastic disk with a stationary restraint, such as a computer memory disk with a magnetic head, is theoretically analyzed taking account of damping. The Nyquist stability criterion is applied, and exact expressions of stability boundaries in a mass-stiffness plane are derived. The relation between the vector locus of the receptance of the rotating disk and the stability boundaries is discussed. For the restraint of a single degree of freedom, the minimum critical mass and the minimum critical stiffness are introduced so that a stable system may be designed, and the effects of the rotation speed and the viscous damping of the disk on these values are discussed. It is found that the damping of the restraint generally destabilizes the system, and that the addition of the damping to the disk can stabilize the system.
社団法人日本機械学会の論文
1994-08-25