2026-03-12T16:36:38Z https://gunma-u.repo.nii.ac.jp/oai

oai:gunma-u.repo.nii.ac.jp:00003313 2023-06-19T13:05:17Z 572:575:576

円形導体と部分環状磁石より構成されるねじり形磁気ダンパの開発 : 第1報, 磁束の取扱いの簡略化について A Rotary Magnetic Damper Consisting of a Sector Magnet and a Circular Conductor : 1st Report, Approximations of Fluxes for Magnets A Rotary Magnetic Damper Consisting of a Sector Magnet and a Circular Conductor : 1st Report, Approximations of Fluxes for Magnets 長屋, 幸助 軽部, 裕夫 日本機械学会 本文データは学協会の許諾に基づきCiNiiから複製したものである Machine Element Magnetic Damper Damping Coefficient Eddy Current Vibration Absorber application/pdf Journal Article This paper is concerned with a method for analyzing a rotary magnetic damper (eddy current brake) consisting of a sector magnet (sector magnetic flux) and a circular conductor. Since the magnetic flux density is a function of the position in the radial direction, the analytical solution for obtaining the eddy current, braking force and damping coefficient is arrived at by dividing the magnetic flux into the narrow sector bonds, and applying the unit step function to solve the differential equation of the electromagnetic fields. Numerical calculations have been carried out for the dimensionless damping coefficients versus the flux range, the position and the distribution of the magnetic flux in the radial direction. Experimental tests are also carried out to verify the present theoretical results. The theoretical results are in good agreement with the experimental ones, and the characteristics of the rotary magnetic damper have been investigated in detail, with the optimal values of the damping coefficient having been clarified. 日本機械学会 1985-12-25 2017-03-27 jpn journal article VoR http://hdl.handle.net/10087/2849 https://gunma-u.repo.nii.ac.jp/records/3313 http://ci.nii.ac.jp/naid/110002388986/ 0387-5024 AN00187463 日本機械学會論文集. C編 51 472 3419 3425 https://gunma-u.repo.nii.ac.jp/record/3313/files/C51_3419.pdf application/pdf 523.7 kB 2020-11-25