Size effect in tension perpendicular to the grain

Martin Bo Uhre Pedersen, Christian Odin Clorius, Lars Damkilde, Preben Hoffmeyer, Søren Traberg

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    Abstract

    The strength in tension perpendicular to the grain is known to decrease with an increase in the stressed volume. Usually this size effect is explained on a stochastic basis, that is an explanation relying on an increased probability of encountering a strength reducing flaw when the volume of the material under stress is increased. This paper presents a small experimental investigation on specimens with well defined structural orientation of the material. The experiments exhibit a larger size effect than expected and furthermore the data and the nature of the failures encountered suggest that the size effect can be explained on a deterministic basis. Arguments for such a simple deterministic explanation of size effect is found in finite element modelling using the orthotropic stiffness characteristics in the transverse plane of wood.
    Original languageEnglish
    Title of host publicationProceedings of Pacific Timber Engineering Conference, Volume 1.
    Place of PublicationRotorua
    PublisherNew Zealand Forest Research Institute Limited
    Publication date1999
    Pages207-214
    Publication statusPublished - 1999
    EventPacific Timber Engineering Conference - Rotorua, New Zealand
    Duration: 14 Mar 199918 Mar 1999

    Conference

    ConferencePacific Timber Engineering Conference
    CountryNew Zealand
    CityRotorua
    Period14/03/199918/03/1999

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