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Estimation of Load-Bearing Capacity and Stiffness of Timber Beams with Through-Thickness Cracks

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Abstract:

The results of experimental and theoretical study of the load-bearing capacity and stiffness of wooden beams with through-thickness cracks depending on their length and location throughout the height of cross-section are given. The analysis of the regularity of change of stress-strain state, stress intensity factors (SIF) and at crack tips, deflections and timber beams load-bearing capacity depending on beam span length versus cross-section height, crack length versus span length, crack location throughout beam height was made. It has been established that load-bearing capacity and stiffness of timber beams with through-thickness cracks depends not only on the crack length, but its location throughout cross-section height as well. Procedure of assessing load-bearing capacity and stiffness of timber beams with through-thickness cracks based on fracture mechanics methods is given.

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Periodical:

Advanced Materials Research (Volume 778)

Pages:

361-368

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.778.361

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Online since:

September 2013

Authors:

Anatoly Yakovlevich Naychuk

Keywords:

Beam, Crack Resistance, Intensity Factor, Stiffness, Strength, Stress, Timber

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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