Damping Characteristics of Flexural Vibration for Partially Covered Beams with Constrained Viscoelastic layers
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概要
- 論文の詳細を見る
A beam partially covered with a constrained viscoelastic layer shows superior damping capacity to that of a fully covered beam, depending on the beam geometry and the properties of the viscoelastic layer. This damping effect, the so-called partial cover effect, however, had not been examined in detail until now. In this paper, the strain energy analjsis of the three types of partially covered five-layered beam is carried out in order to explain the damping mechanism. The results of analysis for the center-covered beam and the end-constrained beam indicate that the partial cover effect is caused by the shear strain energy dissipation at the outer edges of the viscoelastic layer, and also, such energy dissipation depends on the tensile stiffness of the constraining layer. The separately covered beam has a superior damping capacity to that of the center-covered beam with the same cover ratio, due to the energy dissipation of the inner edges of the viscoelastic layers. These damping characteristics of the three types of beam presented are confirmed by experimental results.
- 一般社団法人日本機械学会の論文
- 1991-06-15
著者
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Okada Y
Faculty Of Engineering Ibaraki University
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Okada Yohji
Faculty Of Engineering Ibaraki University
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DEWA Hiromi
Faculty of Engineering, Ibaraki University
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NAGAI Bunsyu
Faculty of Engineering, Ibaraki University
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Dewa Hiromi
Faculty Of Engineering Ibaraki University
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Nagai Bunsyu
Faculty Of Engineering Ibaraki University
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DEWA Hiromi
Faculty of Engineeing, Ibaraki University
関連論文
- Damping Characteristics of Flexural Vibration for Partially Covered Beams with Constrained Viscoelastic layers
- Torsional Stress Analysis and Damping Characteristics of Five-Layered Rod with Viscoelastic Cores
- Determination of the Complex Shear Modulus of Damping Materials by the Composite Beam Test Method
- Determination of the Complex Shear Modulus of an Adhesive Layer by the Composite Beam Test Method
- Determination of the Complex Shear Modulus of Damping Materials by the Composite Beam Test Method : An Evaluation of Determined Values in Consideration of Effect of Bonding Adhesive Layer
- Torsional Damping Characteristics of Rectangular Three-Layered Rods with Viscoelastic Layers : Experimental Evaluation of Sandwich Rod and Covered Rod
- Torsional Stress Analysis and Vibration Damping of Three-Layered Rods : Characterization of Nonsymmetrical Sandwich Rod and Covered Rod