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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Fixed-fixed flexural vibration testing method of beams for timber guardrails

Journal of Wood Science volume 52, pages 202–207 (2006)Cite this article

Abstract

Resonance frequencies of beams with various types of end supports were examined for flexural vibration. Rectangular beams with dimensions of 300 (L) × 25 (R) × 5 or 10mm (T) were used as the test specimens. Various compressing stresses were applied to the parts around both ends of a test beam and flexural vibration tests were conducted. The measured resonance frequency started to increase from the resonance frequency of a beam with simply supported ends and was stable around the resonance frequency of a beam with fixed ends as the compressing stress increased. The stable resonance frequency was lower than the theoretical value because perfect fixation of a beam to a post was difficult. From these results, the temporal change in resonance frequency itself, rather than the stable resonance frequency, is effective to examine whether a beam has enough strength as a guardrail.

References

  1. Kamiya F (2003) Mokuzai Hozon 29:53–57

    Article  Google Scholar 

  2. Kitayama S (2004) Development of wooden road facilities (in Japanese). Mokuzai Kogyo 59:436–442

    Google Scholar 

  3. Kataoka A, Ono T (1975) The relations of experimental factors to the vibration and the measuring values of dynamic mechanical properties of wood. I. The experimental errors due to the measuring apparatus (in Japanese). Mokuzai Gakkaishi 21:543–550

    Google Scholar 

  4. Sobue N (1989) Report for the Grant-in-Aid for Scientific Research (No. 01860021) from the Ministry of Education, Science and Culture of Japan, p 6

  5. Architectural Institute of Japan (2002) Standard for structural design of timber structures (in Japanese). Architectural Institute of Japan pp 179–180

  6. Takeyama K (1944) Inst Jpn Archit 58:9–10

    Google Scholar 

  7. Timoshenko SP, Young DH, Weaver W Jr (1974) Vibration problems in engineering. Wiley, New York

    Google Scholar 

  8. Jimbo Y, Furukawa E (1964) Exercise of vibration engineering (in Japanese). Gakken-sya, Tokyo

  9. Timoshenko SP (1921) On the correction for shear of the differential equation for transverse vibrations of prismatic bars. Philos Mag Sixth Series 41:744–746

    Article  Google Scholar 

  10. Nakao T, Okano T, Asano I (1984) Measurement of anisotropic shear modulus by the torsional-vibration method for free-free wooden beams. Mokuzai Gakkaishi 30:877–885

    Google Scholar 

  11. Goens E (1931) Über die Bestimmung des Elastizitätsmodulus von Stäben mit Hilfe von Biegungsschwingungen. Ann Phys 5F 11:649–678

    Article  Google Scholar 

  12. Hearmon RFS (1958) The influence of shear and rotatory inertia on the free flexural vibration of wooden beams. Brit J Appl Phys 9:381–388

    Article  Google Scholar 

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Authors and Affiliations

  1. Forestry and Forest Products Research Institute, P.O. Box 16, Tsukuba Norin Kenkyu Danchi-nai, Tsukuba, 305-8687, Japan

    Yoshitaka Kubojima, Hideo Kato & Mario Tonosaki

  2. Hokkaido Forest Products Research Institute, Asahikawa, 071-0198, Japan

    Hisashi Ohsaki

Authors
  1. Yoshitaka Kubojima
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  2. Hisashi Ohsaki
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  3. Hideo Kato
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  4. Mario Tonosaki
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Correspondence to Yoshitaka Kubojima.

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Kubojima, Y., Ohsaki, H., Kato, H. et al. Fixed-fixed flexural vibration testing method of beams for timber guardrails. J Wood Sci 52, 202–207 (2006). https://doi.org/10.1007/s10086-005-0754-3

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  • DOI: https://doi.org/10.1007/s10086-005-0754-3

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