Abstract
The main objective of this paper is to develop extended finite element method (XFEM) based models to simulate the crack propagation behavior of wood. Fracture toughness of Mode I and II and elastic properties of Northeast China larch were determined by experiments. Tests on three full-size curved Glulam beams subjected to four-point bending were conducted. XFEM based models incorporating ABAQUS were developed to simulate the experiments and investigate cracking of wood numerically. The numerical results correlate with experiments in terms of crack propagation direction and the applied forces for crack growth.
Zusammenfassung
Ziel dieser Studie war es, auf Grundlage der erweiterten Finite-Elemente-Methode (XFEM) Modelle für die Simulierung des Rissfortschritts in Holz zu entwickeln. Bruchzähigkeit im Modus I und II sowie elastische Eigenschaften von nordostchinesischer Lärche wurden experimentell bestimmt. An drei gekrümmten Brettschichtholzträgern in Gebrauchsabmessungen wurden Vier-Punkt-Biegeversuche durchgeführt. Für die Simulierung der Experimente wurden XFEM basierte Modelle unter Einbeziehung von ABAQUS entwickelt und die Rissbildung wurde numerisch untersucht. Die numerischen Ergebnisse korrelieren mit den experimentell bestimmten Ergebnissen hinsichtlich der Richtung des Rissfortschritts und der für das Risswachstum maßgebenden Kraft.
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Acknowledgments
The authors acknowledge with gratitude the financial support from the National Natural Science Foundation of China (Grant No. 50878067).
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Qiu, L.P., Zhu, E.C. & van de Kuilen, J.W.G. Modeling crack propagation in wood by extended finite element method. Eur. J. Wood Prod. 72, 273–283 (2014). https://doi.org/10.1007/s00107-013-0773-5
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DOI: https://doi.org/10.1007/s00107-013-0773-5