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Please use this identifier to cite or link to this item: http://hdl.handle.net/10087/2900

Title: FEMによる非線形ばねで支持された複数の弾性ブロックの共振応答解析 : 弱非線形性を有する場合の検討
Other Titles: Frequency Response Analysis of Elastic Blocks Supported by a Nonlinear Spring Using Finite Element Method : Investigation under Weak Nonlinearity
Authors: 山口, 誉夫
中原, 直人
永井, 健一
Keywords: Computer Aided Analysis
Finite Element Method
Flexible Structure
Nonlinear Vibration
Vibration of Continuous System
Issue Date: 25-Aug-2004
Publisher: 日本機械学会
Citation: 日本機械学會論文集 C編. 70(696), 2219-2227 (2004)
Abstract: This paper describes vibration analysis using finite element method for an elastic block supported by a nonlinear concentrated spring. This block is connected to another block by a linear concentrated spring. The restoring force of the nonlinear spring has cubic nonlinearity. In this system, resonance responses mainly involve nonlinearity due to two vibration modes. Finite element for the nonlinear spring is expressed. Then the nonlinear spring element and linear spring element are combined to the elastic blocks modeled by linear solid finite elements. Further, the discretized equations in physical coordinate are transformed into the nonlinear ordinary coupled differential equations using normal coordinate corresponding to linear natural modes. This transformation yields computation efficiency. Influences of Young's modulus on frequency responses are clarifed.
URI: http://hdl.handle.net/10087/2900
ISSN: 0387-5024
Appears in Collections:学術雑誌論文

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