Failure Behavior of Spruce Wood under Bending-Shear Combined Stress Field
Publication: Journal of Materials in Civil Engineering
Volume 18, Issue 1
Abstract
When a specimen with symmetrical grooves eccentrically cut on its side surfaces is bent, failure due to the bending-shear combined stress field is induced at the grooved portion, so the failure behavior under various combined stress fields can be examined by varying the location of the grooves. Based on this concept, three-point and asymmetric four-point bending tests using spruce specimens with grooves cut on various locations on the side surfaces were conducted. Bending and shear stresses at the occurrence of failure were calculated based on elementary beam theory, and the test results were compared with three failure conditions: maximum stress, Hill-type, and Goldenblat–Kopnov’s failure conditions. For a rough approximation of the failure behavior, which might be influenced by the loading pattern, the Hill-type condition was superior to the maximum stress condition, whereas Goldenblat–Kopnov’s condition, the expression of which is more complicated, is effective for describing the failure behavior more precisely.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 18 • Issue 1 • February 2006
Pages: 93 - 98
Copyright
© 2006 ASCE.
History
Received: Oct 5, 2004
Accepted: Apr 4, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
Notes
Note. Associate Editor: Roberto Lopez-Anido
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