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论文类型：期刊论文

发表时间：2016-01-01

发表刊物：WOOD RESEARCH

收录刊物：SCIE、EI、Scopus

卷号：61

期号：6

页面范围：951-958

ISSN号：1336-4561

关键字：Glulam; interlaminar fracture; fracture toughness; equivalent elastic modulus

摘要：Critical strain energy release rate G(C) and stress intensity factor K-C are both defined as fracture toughness, and they can be converted to one another through an equivalent elastic modulus for wood fracture. Whereas the equivalent elastic modulus for interlaminar fracture toughness of glued-laminated timber (glulam) is kept unknown. This paper briefly presented Modes I and II interlaminar fracture toughnesses of glulam, which were obtained from double cantilever beam (DCB) and three-point bending end-notched flexure (3ENF) tests using finite element method (FEM). On the basis of Hankinson-type formula and equivalent elastic modulus of wood fracture, this study developed two empirical expressions to calculate the equivalent elastic moduli for Modes I and II interlaminar fracture of glulam.