Research Article
Oct 1973
Inelastic Bending of Wood Beams
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VIEW THE REPLYPublication: Journal of the Structural Division
Volume 99, Issue 10
Abstract
The bending stress analysis of wood beams in the plastic range is presented and a new theoretical method of predicting the ultimate load is developed. The method is based on the approach known as the bending theory of beams, but the pattern of stress distribution at failure in the critical cross-sectional area is now mathematically formulated on the basis of the stress-strain diagram obtained by the tests. The validity of the theoretical method is verified by a testing program using three full-size specimens. The test results agreed favorably with the theoretical predictions. The actual ultimate bending moment closely coincides with that obtained by the theory presented, as does the downward shifting of the neutral axis. Wood beams of any species can be computed by this theory if the mathematical equation for the stress-strain diagram is known. This theory is verified through tests on glue laminated beams using wood of the best quality.
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Published In
Journal of the Structural Division
Volume 99 • Issue 10 • October 1973
Pages: 2079 - 2095
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© 1973 American Society of Civil Engineers.
History
Published in print: Oct 1973
Published online: Feb 1, 2021
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Authors
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Borislav D. Zakić
Head of Struct. Dept., Inst. for Materials and Construction Testing, Belgrade, Yugoslavia, formerly Research Assoc., Civ. Engrg. Dept., Univ. of California, Berkeley, Calif.
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