Mitsubishi Heavy Industries Limited

Aisin Aw Co., Ltd.

Kagoshima University

Oita University

Takahiro Ryu

Yoichi Oi

Masaki Wajima

Hiroki Nagai

Takao Sakamoto

Hiroshi Miura

Hideki Hirooka

Kiyoshi Nakano

Takashi Nakae

Atsuo Sueoka

Kenichiro Matsuzaki

In a vibration damping device, the moment of inertia Jof a driven member, the moment of inertia Jof an inertial mass body, the mass m of crank members, the distance L3 between the center of gravity G of the crank memberand the fulcrum of swinging of the crank memberwith respect to the inertial mass body, and the distance L4 between this fulcrum and the center of rotation RC are determined so that torque fluctuation of an object for which vibration is to be damped, which is derived based on angular displacement and angles obtained by solving an equation of motion for the driven memberand an equation of motion for the entire vibration damping deviceis equal to a target value.

Vibration damping device and method for designing the same

There is provided a method for restraining deformation of a nip roll, in which polygonal deformation of nip rolls that are in contact with each other is restrained, so that vibration produced by the deformation is decreased. The diameter ratio between the first and second nip rollsandis set at a value different from 1, by which both of the numbers of polygon sides of the rollsandare prevented from becoming integers or values close to integers. Thereby, polygonal deformation of nip rolls that are in contact with each other, so that vibration produced by the deformation is decreased.

Method for restraining deformation of nip roll

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Oita, Japan

Takahiro Ryu