Design of Passive Damping Systems

Author:

Johnson C. D.1

Affiliation:

1. CSA Engineering, Inc., 2850 West Bayshore Road, Palo Alto, CA 94303-3843

Abstract

This paper presents a brief review of techniques for designed-in passive damping for vibration control. Designed-in passive damping for structures is usually based on one of four damping technologies: viscoelastic materials, viscous fluids, magnetics, or passive piezoelectrics. These methods are discussed and compared. The technology of using viscoelastic materials for passive damping is discussed in more detail than the other methods since it is presently the most widely used type of damping technology. Testing and characterization of viscoelastic materials and design methods for passive damping are discussed. An example showing the benefits of a passive damping treatment applied to a stiffened panel under an acoustic load is presented.

Publisher

ASME International

Subject

Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

Reference19 articles.

1. Aklonis, J. J., and MacKnight, W. J., 1983, Introduction to Polymer Viscoelasticity, 2nd Edition, John Wiley and Sons.

2. Ferry J. D. , FitzgeraldE. R., and GrandieneL. D., and WilliamsM. L., 1952, “Temperature-Dependence of Dynamic Properties of Elastomers: Relaxation Distributions,” Ind. Eng. Chem. Vol. 44, No. 4, Apr., pp. 703–706.

3. Ferry, John D., 1980, Viscoelastic Properties of Polymers, 3rd Edition, John Wiley and Sons.

4. Forward, R. L., 1979, “Electronic Damping of Vibrations in Optical Structures,” Applied Optics, Vol. 18, No. 5, March.

5. Fowler, B. L., 1989, “Interactive Processing of Complex Modulus Data,” Dynamic Elastic Modulus Measurements in Materials, ASTM STP 1045.

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