Damping Analysis of Cylindrical Composite Structures with Enhanced Viscoelastic Properties

被引：14

作者：

Kliem, Mathias ^{[1
]}

Hogsberg, Jan ^{[1
]}

Vanwalleghem, Joachim ^{[2
]}

Filippatos, Angelos ^{[3
]}

Hoschuetzky, Stefan ^{[4
]}

Fotsing, Edith-Roland ^{[5
]}

Berggreen, Christian ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Mech Engn, Lyngby, Denmark

[2] Univ Ghent, Dept Mat Sci & Engn, Ghent, Belgium

[3] Tech Univ Dresden, Inst Lightweight Engn & Polymer Technol, Dresden, Germany

[4] Leichtbau Zentrum Sachsen GmbH, Dresden, Germany

[5] Polytech Montreal, Dept Mech Engn, Montreal, PQ, Canada

来源：

APPLIED COMPOSITE MATERIALS | 2019年 / 26卷 / 01期

关键词：

Composite structure; Passive damping treatment; Filament winding; Vibration analysis; Function integration; VIBRATION; SIMULATION; DESIGN; BEAMS;

D O I：

10.1007/s10443-018-9684-2

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Constrained layer damping treatments are widely used in mechanical structures to damp acoustic noise and mechanical vibrations. A viscoelastic layer is thereby applied to a structure and covered by a stiff constraining layer. When the structure vibrates in a bending mode, the viscoelastic layer is forced to deform in shear mode. Thus, the vibration energy is dissipated as low grade frictional heat. This paper documents the efficiency of passive constrained layer damping treatments for low frequency vibrations of cylindrical composite specimens made of glass fibre-reinforced plastics. Different cross section geometries with shear webs have been investigated in order to study a beneficial effect on the damping characteristics of the cylinder. The viscoelastic damping layers are placed at different locations within the composite cylinder e.g. circumferential and along the neutral plane to evaluate the location-dependent efficiency of constrained layer damping treatments. The results of the study provide a thorough understanding of constrained layer damping treatments and an improved damping design of the cylindrical composite structure. The highest damping is achieved when placing the damping layer in the neutral plane perpendicular to the bending load. The results are based on free decay tests of the composite structure.

引用

页码：85 / 113

页数：29

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