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Determining the Shear Modulus of Sitka Spruce from Torsion Tests.

Khokhar, Aamir Muhammad, Zhang, Hexin, Ridley-Ellis, Daniel and Moore, John (2008) Determining the Shear Modulus of Sitka Spruce from Torsion Tests. Proceedings of the 10th World Conference on Timber Engineering, Miyazaki 2008 (Paper ).

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    Abstract/Description

    This paper presents details of the experimental method, and preliminary results from, a series of torsion tests undertaken to evaluate the shear modulus of Sitka spruce (Picea sitchensis) timber. Direct torsion tests were used to determine the variation of shear modulus within and between pieces of timber with rectangular cross-sections and with lengths ranging from 1 m up to 3.6 m. Preliminary results obtained indicate that there was considerable variation in shear modulus between pieces of timber tested, but that there was no relationship with the modulus of elasticity in bending, or knot area. Approximately 33 percent of the variation in shear modulus was due to variation along the length of a piece of timber sample. More detailed investigation of the shear transfer mechanism within a timber beam is required, particularly to identify those physical and anatomical characteristics which influence the shear properties.

    Item Type: Article
    Related URLs:
    Uncontrolled Keywords: Torsion; Shear; Timber; Wood; Sitka spruce;
    University Divisions/Research Centres: Faculty of Engineering, Computing and Creative Industries > School of Engineering and the Built Environment
    Dewey Decimal Subjects: 600 Technology > 690 Building & construction > 694 Wood construction & carpentry
    600 Technology > 620 Engineering > 624 Civil engineering
    Library of Congress Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    S Agriculture > SD Forestry
    Item ID: 2527
    Depositing User: Dr. Daniel Ridley-Ellis
    Date Deposited: 06 Apr 2009 15:16
    Last Modified: 16 May 2011 11:49
    URI: http://researchrepository.napier.ac.uk/id/eprint/2527

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