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A new fracture mechanics theory for orthotropic materials like wood |
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| Authors: | T.A.C.M. van der Put |
| Affiliation: | Delft Wood Science Foundation, Wielengahof 16, NL-2625 LJ Delft, South Holland, Netherlands |
| Abstract: | A new fracture mechanics theory is derived based on a new orthotropic-isotropic transformation of the Airy stress function, making the derivation of the Wu-“mixed mode I-II” fracture criterion possible, based on the failure criterion of a flat elliptic crack. As a result of this derivation, the right fracture energy and theoretical relation between mode I and II stress intensities and energy release rates are obtained. |
| Keywords: | Linear elastic fracture mechanics Mixed mode I-II fracture criterion Flat elliptic crack Fracture energy Energy release rate Orthotropic-isotropic Airy stress-function transformation |
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