Mixed-mode (I plus II) fracture characterization of wood bonded joints

被引：27

作者：

de Moura, M. F. S. F. ^{[1
]}

Oliveira, J. M. Q. ^{[2
]}

Morais, J. J. L. ^{[3
]}

Dourado, N. ^{[3
]}

机构：

[1] Univ Porto, Dept Engn Mecan, Fac Engn, P-4200465 Oporto, Portugal

[2] Inst Super Politecn Viseu, Dept Engn Madeiras, Viseu, Portugal

[3] Univ Tras os Montes & Alto Douro, CITAB Ctr Res & Technol Agroenvironm & Biol Sci, Vila Real, Portugal

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2011年 / 25卷 / 04期

关键词：

Wood bonded joints; Mixed-mode loading; Fracture criteria; DATA REDUCTION SCHEME; CANTILEVER BEAM TEST; COMPOSITE; SPECIMENS; TOUGHNESS; BEHAVIOR; TESTS;

D O I：

10.1016/j.conbuildmat.2010.11.060

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this work fracture characterization of wood bonded joints is performed. The main objective is to define a fracture criterion under mixed-mode loading (I + II), in order to provide a safer and reliable design of wood bonded joints. Experimental fracture characterization tests were carried out. For mode I and mode II loading, the double cantilever beam and the end notched flexure tests were selected. Under mixed-mode I + II loading the mixed-mode bending test was used considering different mixed-mode ratios. A data reduction scheme based on the specimen compliance, the beam theory and on a crack equivalent concept was used to overcome the difficulties inherent to the above referred tests. The fracture linear energetic criterion showed to be adequate to describe the fracture envelop with an exception, as discussed in the paper. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1956 / 1962

页数：7

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