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Development of procedures for calculating stiffness and damping properties of elastomers in engineering applications. Part 1 : Verification of basic methods

Author
Tessarzik, J. M.
Published
Mar 31, 1972.
Physical Description
1 electronic document
Additional Creators
Chiang, T. and Badgley, R. H.
Online Version

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Summary
The primary aim of this investigation was verification of basic methods which are to be used in cataloging elastomer dynamic properties (stiffness and damping) in terms of viscoelastic model constants. These constants may then be used to predict dynamic properties for general elastomer shapes and operating conditions, thereby permitting optimum application of elastomers as energy absorption and/or energy storage devices in the control of vibrations in a broad variety of applications. The efforts reported involved: (1) literature search; (2) the design, fabrication and use of a test rig for obtaining elastomer dynamic test data over a wide range of frequencies, amplitudes, and preloads; and (3) the reduction of the test data, by means of a selected three-element elastomer model and specialized curve fitting techniques, to material properties. Material constants thus obtained have been used to calculate stiffness and damping for comparison with measured test data. These comparisons are excellent for a number of test conditions and only fair to poor for others. The results confirm the validity of the basic approach of the overall program and the mechanics of the cataloging procedure, and at the same time suggest areas in which refinements should be made.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19730002204.
Accession ID: 73N10931.
MTI-72TR20.
NASA-CR-120965.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15945247