RESEARCH PAPERS: Stress Analysis and Design Factors

A Weibull Analysis of Wood Member Bending Strength

[+] Author and Article Information
J. Y. Liu

Forest Products Laboratory, USDA, Forest Service, Madison, Wis. 53705

J. Mech. Des 104(3), 572-577 (Jul 01, 1982) (6 pages) doi:10.1115/1.3256388 History: Received January 06, 1982; Online November 17, 2009


The analysis of size effect on bending strength of rectangular wood beams based on Weibull’s theory of brittle failure has been expanded here to include tapered wood beams under arbitrary loading conditions. The mathematical formulations are expressed in terms of the two parameters in Weibull’s model. These parameters must be determined experimentally for each wood species. Numerical data for Douglas-fir beams are presented in graph form, where necessary, for easy application by the design engineer. Design procedures are demonstrated by numerical examples.

Copyright © 1982 by ASME
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