2026-03-10T12:50:59Z https://mie-u.repo.nii.ac.jp/oai

oai:mie-u.repo.nii.ac.jp:00007103 2023-09-21T05:37:47Z 143:584:585

積層複合材料の減衰パラメータ同定法 松本, 金矢 MATSUMOTO, Kin'ya 細川, 健治 HOSOKAWA, Kenji 座古, 勝 ZAKO, Masaru 小林, 博 KOBAYASHI, Hiroshi 650 Damping Free Vibration Identification Finite Element Method Eigenvalue Analysis Laminated Composite Materials Strain Energy Method Quasi-Newton Method application/pdf An identification method of vibrational damping parameters for laminated composite materials is presented by using the finite element eigenvalue analysis. A shell element for unsymmetrically laminated composite materials is formulated with the first-order shear deformation theory. The vibrational damping model of fiber reinforced plastic plates proposed by Adams et al. is used to calculate damping ratios for idenification problems. The identification problem of vibrational damping parameters can be converged as a nonlinear optimization problem. Vibrational damping parameters of unidirectional laminae are identified by using the quasi-Newton method, so that damping ratios of laminated composite materials calculated by the finite element eigenvalue analysis may be agree with those measured by the vibration test. An numerical examples, vibrational damping parameters of unidirectional laminae are identified and compared with the experimental results. journal article 日本機械学会 1999-08-25 VoR application/pdf 日本機械学會論文集. C編 636 65 3129 3134 AN00187463 0387-5024 https://mie-u.repo.nii.ac.jp/record/7103/files/20A6657.pdf http://hdl.handle.net/10076/8545 https://mie-u.repo.nii.ac.jp/records/7103 jpn http://ci.nii.ac.jp/naid/110002384339/ 社団法人日本機械学会 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