The main objective of this article is to present a new fracture criterion for predicting both crack growth initiation and crack propagation direction in wood specimens under mixed mode I/II loading. This criterion is based on distribution of the maximum shear stress in the crack tip vicinity. An accurate estimation of the damage zone effect in wood is the main advantage of this criterion in comparison with available ones. The variation compliance of damaged material due to growth of microcracks is considered by a suitable damage factor. This criterion is extended for specimens with arbitrarily oriented cracks with respect to the orthotropic axes. It is revealed that developed approach is more compatible with the nature of the fracture phenomena in wood. The superiority of proposed method has been shown by some verification cases for several available fracture test data.
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References
Wood Handbook – Wood as an Engineering Material, U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, Madison, WI (1999).
I. Smith, E. Landis, and M. Gong, Fracture and Fatigue in Wood, Wiley (2003).
S. Vasic, Application of Fracture Mechanics to Wood, Ph.D. Thesis, University of New Brunswick, Fredricton, NB, Canada (2000).
S. Mall and J. E. Murphy, “Criterion for mixed mode fracture in wood,” J. Eng. Mech., 109, No. 3, 680–690 (1983).
E. M. Wu, “Application of fracture mechanics to anisotropic plates,” J. Appl. Mech., 34, No. 4, 967–974 (1967).
L. O. Jernkvist, “Fracture of wood under mode loading. I. Derivation of fracture criteria,” Eng. Fract. Mech., 68, 549–563 (2001).
A. A. Griffith, “The phenomena of rupture and flow in solids,” Phil. Trans. Roy. Soc. London A, 221, 163–197 (1921).
G. C. Sih, “Strain-energy density factor applied to mixed mode crack problems,” Int. J. Fracture, 10, No. 3, 305–321 (1974).
L. O. Jernkvist, “Fracture of wood under mode loading. II. Experimental investigation of Picea abies,” Eng. Fract. Mech., 68, 565–576 (2001).
D. G. Hunt and W. P. Croager, “Mode II fracture toughness of wood measured by a mixed-mode test method,” J. Mat. Sci. Lett., 1, 77–79 (1982).
J. Bodig and B. A. Jayne, Mechanics of Wood and Wood Composites, Van Nostrand Reinhold Company, New York (1982).
G. C. Sih, P. C. Paris, and G. R. Irwin, “On cracks in rectilinearly anisotropic bodies,” Int. J. Fract. Mech., 1, No. 3, 189–203 (1965).
S. Mindess and A. Bentur, “Crack propagation in notched wood specimens with different grain orientations,” Wood Sci. Technol., 20, 145–155 (1986).
M. He and J. W. Hutchinson, “Kinking of a crack out of an interface,” J. Appl. Mech., 56, 270–278 (1989).
S. Yang and F.-G. Yuan, “Kinked crack in anisotropic bodies,” Int. J. Solids Struct., 37, 6635–6682 (2000).
M. Romanowicz and A. Seweryn, “Verification of a non-local stress criterion for mixed mode fracture in wood,” Eng. Fract. Mech., 75, No. 10, 3141–3160 (2008).
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Translated from Problemy Prochnosti, No. 3, pp. 169 – 178, May – June, 2013.
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Fakoor, M., Rafiee, R. Fracture investigation of wood under mixed mode I/II loading based on the maximum shear stress criterion. Strength Mater 45, 378–385 (2013). https://doi.org/10.1007/s11223-013-9468-8
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DOI: https://doi.org/10.1007/s11223-013-9468-8