Application of Orthotropic Failure Criterion to Wood
Publication: Journal of Engineering Mechanics
Volume 115, Issue 4
Abstract
The failure criterion for orthotropic materials as wood is presented. Using Tsai and Wu criterion the failure criterion for wood is derived under plane stress conditions ignoring the influence of stress perpendicular to the grain. The failure criterion for wood is given by an ellipse. Tests of mechanical properties of Japanese cedar are carried out, where eight groups of wood transmission poles are used. Tests are performed on 104 small specimens to determine direct compressive, tensile and shearing strengtjh of the test materials. The ultimate tensile strength parallel to the grain of the test specimens are 1.5 to 2.4 times the ultimate compressive strength parallel to the grain. The failure criterion for the test specimens is shown.
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References
1.
Hill, R. (1950). The mathematical theory of plasticity. Oxford University Press, London.
2.
Japanese Industrial Standard (1977). Z 2111–2114, Japanese Standards Assoc.
3.
Malhotra, S. K., and Bažant, I. M. M. (1980). “Ultimate bending strength theory for timber beams,” Wood Science, 13(1), 1980.
4.
Put, T. A. C. M. van der (1982). “A general failure criterion for wood.” Proc. of IUFRO, Meeting Boras Sweden, 323.
5.
Tsai, S. W., and Wu, E. M. (1971). “A general failure criterion for anisotropic materials.” J. Compos. Mater., 5, 58–80.
6.
Zakic, B. D. (1984). “Shearing failure in plastic bending of wood beams.” Holzforschung und Holzverwertung 36(5), 85–94.
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Published In
Journal of Engineering Mechanics
Volume 115 • Issue 4 • April 1989
Pages: 867 - 872
Copyright
Copyright © 1989 ASCE.
History
Published online: Apr 1, 1989
Published in print: Apr 1989
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