Theory of Mechanical Damping Due to Dislocations

• A. Granato

  Division of Applied Mathematics, Brown University, Providence, Rhode Island

• K. Lücke

  Division of Applied Mathematics, Brown University, Providence, Rhode Island

抄録

A quantitative theory of damping and modulus changes due to dislocations is developed. It is found that the model used by Koehler of a pinned dislocation loop oscillating under the influence of an applied stress leads to two kinds of loss, one frequency dependent and the other not. The frequency dependent loss is found to have a maximum in the high megacycle range. The second type of loss is a hysteresis loss which proves to be independent of frequency over a wide frequency range which includes the kilocycle range. This loss has a strain-amplitude dependence of the type observed in the kilocycle range. The theory provides a quantitative interpretation of this loss.

収録刊行物

• Journal of Applied Physics

  Journal of Applied Physics 27 (6), 583-593, 1956-06-01

  AIP Publishing

キーワード

• General Physics and Astronomy

詳細情報

• CRID: 1363951795185778560
• NII論文ID: 30015902716
• DOI: 10.1063/1.1722436
• ISSN: 10897550
• ISSN: 00218979
• ISSN: http://id.crossref.org/issn/00218979
• Web Site: https://pubs.aip.org/aip/jap/article-pdf/27/6/583/18315628/583_1_online.pdf
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