空間に固定した点で拘束された回転円板の安定性 : 減衰を無視した場合

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 in the case where there is no damping. A graphical stability criterion for an undamped system is presented, and exact expressions of stability boundaries in a mass-stiffness plane are derived. It is clarified that a static instability region exists just above each critical speed of the disk and that a dynamic instability region exists in the vicinity of each speed where a curve with negative modal parameters intersects a curve with positive modal parameters in Campbell's diagram. 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 on these values are discussed.
社団法人日本機械学会の論文
1994-08-25