Damping of Structural Vibration Using Lightweight Granular Materials

Park, Junhong; Palumbo, Daniel L.

doi:10.1007/s11340-008-9181-x

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Damping of Structural Vibration Using Lightweight Granular Materials

Park, Junhong;
Palumbo, Daniel L.

Citations

WEB OF SCIENCE

18

Citations

SCOPUS

22

초록

An investigation of the vibration damping capability of granular treatments is presented. Cavities in aluminum and sandwich beams were filled with the lightweight particles made of polyimide. For analysis of vibration damping, the complex stiffness of structures before and after damping treatment was measured. Particles of different sizes, weights and polymer composition were used in the damping treatments. Large, frequency-dependent variations in structural loss factor depending on the types of particles were observed. This behavior was predicted by the Rayleigh-Ritz method. The frame wave propagation characteristics of the particles were measured and used in the numerical simulation. The acoustic-structure interaction between particles and structures enhances the dissipation of vibration energy.

키워드

Vibration control; Particle damping; Acoustic-structure interaction; Sandwich structures; Acoustics; Alumina; Computer simulation languages; Polyimides; Sandwich structures; Structural dynamics; Vibration control; Wave propagation; Damping; Acoustic - Structure interaction; Before and after; Damping treatment; Different sizes; Frequency-dependent; Numerical simulation; Particle damping; Polymer composition; Rayleigh-Ritz methods; Sandwich beams; Structural loss; Structural vibrations; Vibration energies; Vibration-damping; Wave propagation characteristics

제목: Damping of Structural Vibration Using Lightweight Granular Materials

저자: Park, Junhong; Palumbo, Daniel L.

DOI: 10.1007/s11340-008-9181-x

발행일: 2009-10

유형: Article

저널명: Experimental Mechanics

권: 49

호: 5

페이지: 697 ~ 705