Torsional Resonance Vibrations of Uniform Bars of Square Cross Section

Relations by which the shear modulus may be computed from the fundamental and overtones of the torsional resonance frequencies of square bars have been established empirically. The results are analyzed in terms of a proportionality factor, R, defined by the equation G = (2l f(n)/n)(2)ρR. R is found...

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Detalles Bibliográficos
Autores principales: Tefft, Wayne E., Spinner, Sam
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1961
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5287276/
https://www.ncbi.nlm.nih.gov/pubmed/32196234
http://dx.doi.org/10.6028/jres.065A.020
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author Tefft, Wayne E.
Spinner, Sam
author_facet Tefft, Wayne E.
Spinner, Sam
author_sort Tefft, Wayne E.
collection PubMed
description Relations by which the shear modulus may be computed from the fundamental and overtones of the torsional resonance frequencies of square bars have been established empirically. The results are analyzed in terms of a proportionality factor, R, defined by the equation G = (2l f(n)/n)(2)ρR. R is found to increase with increasing cross section to length ratio. Also, the overtones are less than integral multiples of the fundamental by an amount which increases with increasing cross section to length ratio.
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spelling pubmed-52872762020-03-18 Torsional Resonance Vibrations of Uniform Bars of Square Cross Section Tefft, Wayne E. Spinner, Sam J Res Natl Bur Stand A Phys Chem Article Relations by which the shear modulus may be computed from the fundamental and overtones of the torsional resonance frequencies of square bars have been established empirically. The results are analyzed in terms of a proportionality factor, R, defined by the equation G = (2l f(n)/n)(2)ρR. R is found to increase with increasing cross section to length ratio. Also, the overtones are less than integral multiples of the fundamental by an amount which increases with increasing cross section to length ratio. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1961 1961-06-01 /pmc/articles/PMC5287276/ /pubmed/32196234 http://dx.doi.org/10.6028/jres.065A.020 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Bureau of Standards Section A is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Tefft, Wayne E.
Spinner, Sam
Torsional Resonance Vibrations of Uniform Bars of Square Cross Section
title Torsional Resonance Vibrations of Uniform Bars of Square Cross Section
title_full Torsional Resonance Vibrations of Uniform Bars of Square Cross Section
title_fullStr Torsional Resonance Vibrations of Uniform Bars of Square Cross Section
title_full_unstemmed Torsional Resonance Vibrations of Uniform Bars of Square Cross Section
title_short Torsional Resonance Vibrations of Uniform Bars of Square Cross Section
title_sort torsional resonance vibrations of uniform bars of square cross section
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5287276/
https://www.ncbi.nlm.nih.gov/pubmed/32196234
http://dx.doi.org/10.6028/jres.065A.020
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