Two-parameter fracture mechanical analysis of a near-crack-tip stress field in wedge splitting test specimens

被引：21
作者：
Seitl, Stanislav [1 ]
Vesely, Vaclav [2 ]
Routil, Ladislav [2 ]
机构：
[1] Acad Sci Czech Republ, Inst Phys Mat, Brno, Czech Republic
[2] Brno Univ Technol, Fac Civil Engn, Inst Struct Mech, Brno, Czech Republic
来源：
COMPUTERS & STRUCTURES | 2011年 / 89卷 / 21-22期
关键词：
Wedge splitting test; Stress intensity factor; T-stress; Two-parameter fracture mechanics; Numerical simulation; Direct method; INTENSITY FACTORS; ASYMPTOTIC FIELD; T-STRESS; CONCRETE; BEHAVIOR; TERMS;
D O I：
10.1016/j.compstruc.2011.05.020
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The stress intensity factor and the T-stress for the near-crack-tip field for wedge splitting test (WST) specimens with several variants of boundary conditions are computed using finite element software. The WST is a convenient alternative to classical fracture tests (bending, tensile) for the quasi-brittle fracture of building materials. The WST specimen is investigated within the framework of two-parameter fracture mechanics; near-crack-tip stress field parameters are determined and compared with those of the compact tension specimen due to its shape similarity to the WST. The sensitivity of the values of these parameters to the boundary conditions is also shown. (C) 2011 Civil-Comp Ltd and Elsevier Ltd. All rights reserved.
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页码：1852 / 1858
页数：7
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