Loss Factors of Viscoelastic Systems in Terms of Energy Concepts

• Eric E. Ungar

  Bolt Beranek and Newman, Inc.

• Edward M. Kerwin

  Bolt Beranek and Newman, Inc.

抄録

The definition of loss factor in terms of energy quantities is reexamined, particularly as it applies to composite viscoelastic systems. A restatement of this definition in terms of a corresponding viscoelastic spring is used to show that this definition is extremely useful for massless (ideal viscoelastic spring) systems, but may be applied unambiguously to spring systems with a single attached mass only at resonance. Simple relations are derived which express the loss factors of series-parallel arrays of massless viscoelastic springs in terms of properties of the individual components; application of these relations to damping analyses of composite structures should result in considerable economy of effort.

収録刊行物

• The Journal of the Acoustical Society of America

  The Journal of the Acoustical Society of America 34 (7), 954-957, 1962-07-01

  Acoustical Society of America (ASA)

キーワード

• Acoustics and Ultrasonics
• Arts and Humanities (miscellaneous)

詳細情報

• CRID: 1361418519620137088
• NII論文ID: 30016140155
• DOI: 10.1121/1.1918227
• ISSN: 15208524
• ISSN: 00014966
• ISSN: http://id.crossref.org/issn/00014966
• Web Site: https://pubs.aip.org/asa/jasa/article-pdf/34/7/954/18746036/954_1_online.pdf
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  • CiNii Articles