※一部利用できない機能があります
| 1.
論文 |
論文
|
長屋, 幸助 ; 平田, 康夫 ; 鶴見, 豊明 ; 武田, 定彦 ; 永井, 健一 ; 谷藤, 克也
概要:
application/pdf<br />Journal Article<br />Stresses in elliptical-cross-section coil springs become small as compared to other springs used in practical machines at a certain aspect ratio. This article presents a simplified stress
…
expression for designing the elliptical-cross section coil springs. The stresses obtained by the present design formula are compared with those obtained by numerical methods. It is ascertained that the present formula is applicable to design the elliptical-cross section-coil springs.
続きを見る
|
||
| 2.
論文 |
論文
|
長屋, 幸助 ; 武田, 定彦 ; 佐藤, 淳 ; 井開, 重男 ; 関口, 肇 ; 斉藤, 登
概要:
application/pdf<br />Journal Article<br />This paper proposes a thrust bearing lubricated by a magnetic fluid under a magnetic field. The critical pressures of the bearing versus the magnitude of the magnetic flux densities have been
…
investigated experimentally. It is clarified that the critical pressures of the proposed bearing are larger than those of the normal lubricant bearing under high speeds.
続きを見る
|
||
| 3.
論文 |
論文
|
永井, 健一 ; 長屋, 幸助 ; 武田, 定彦 ; 中村, 欣明
概要:
application/pdf<br />Journal Article<br />Analytical results are presented for nonlinear vibrations of a stretched string connected with a laterally movable end mass at one end. Applying the modified Galerkin method to the basic
…
equations, a set of ordinary differential equations with cubic nonlinearity is obtained. The steady-state response is determined by the harmonic balance method. Numerical calculations are carried out for the various values for the end mass to the string and the geometry of the string. It is found that if the mass of the end mass increases to greater than that of the string, the resonant response in the first mode of vibration can be treated as a linear vibration up to a sufficiently large amplitude. However, the resonant curves in the higher mode of vibration show responses with a strong nonlinearity within a small amplitude. The increment of the cross section area of the string also gives a strong nonlinearity to the response in every mode of vibration.
続きを見る
|
||
| 4.
論文 |
論文
|
長屋, 幸助 ; 中田, 貴隆 ; 武田, 定彦
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
|
||
| 5.
論文 |
論文
|
佐藤, 雅志 ; 長屋, 幸助 ; 武田, 定彦 ; 松本, 幸夫 ; 斎藤, 純幸 ; 森田, 国樹
概要:
application/pdf<br />Journal Article<br />第一報で与えた理論結果を用いて異形断面ばねの数値計算を行い, また実験をも行い,第1報の結果が実用上十分な精度を有することを確認した. 次に卵形断面ばねを新
…
たに開発し, 理論値と実験値との比較検討を行うとともに, 従来の円形断面ばねとの比較も行い, 卵形ばねがより優れた機能部品となることを明らかにした. さらにだ円形断面ばねならびに丸コバ断面ばねの開発をも行い, 異形断面ばねの系統的設計法を確立した.
続きを見る
|
