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論文

論文
長屋, 幸助 ; 中田, 貴隆 ; 武田, 定彦
出版情報: 日本機械学會論文集. C編.  52  pp.2940-2945,  1986-11-25.  日本機械学会
概要: application/pdf<br />Journal Article<br />This paper deals with a method for solving dynamic stress problems of a non-cylindrical viscoelastic coil spring subjected to base excitations. The analysis considers the effects of ends of the coil, and applies the three dimensional curved beam theory for obtaining the exact solution of the element of the coil. The resultant forces and the resultant moments in the vibrant coil are decided by means of the transfer matrix method for an arbitrary shape. Both the shear and the normal stresses are obtained by use of the curved beam theory as just mentioned. Numerical calculations have been carried out for two cases of a barrel spring and a hyperboloidal spring. 続きを見る
2.

論文

論文
長屋, 幸助 ; 池田, 真治
出版情報: 日本機械学會論文集. C編.  51  pp.3354-3362,  1985-12-25.  日本機械学会
概要: application/pdf<br />Journal Article<br />This paper discusses the bending vibration characteristics of a rotating shaft of a motor, with consideration of the electromagnetic sucking force which acts on a rotor, caused by the narrow electromagnetic field between a stator and the rotor. The dynamic response of the motor under the action of the whirling load of the shaft has been analyzed systematically by considering both the translational and rotary motions of the motor. In the analysis, the transfer matrix method is utilized to obtain the response of the shaft. The equation of longitudinal vibrations of a viscoelastic body is applied to the analysis of the viscoelastic foundation under the assumption of the structural damping. Numerical calculations have been carried out for the critical speeds and the response of both the shafts and the motor. 続きを見る