Two-Dimensional Fracture Mechanics Analysis Using a Single-Domain Boundary Element Method

Table 1

Normalized SIFs for a central slant in an isotropic Brazilian disc subjected to a concentrated load (𝑎/𝑅=0.5).

𝛽 (rad.)	Atkinson et al. (1982) [42]		Chen et al. (1998) [28]		This study
	𝐾I/𝜎√𝜋𝑎	𝐾II/𝜎√𝜋𝑎	𝐾I/𝜎√𝜋𝑎	𝐾II/𝜎√𝜋𝑎	𝐾I/𝜎√𝜋𝑎	𝐾II/𝜎√𝜋𝑎
0	1.387	0	1.339	0	1.343	0
𝜋/16	0.970	−1.340	0.960	−1.275	0.952	−1.281
2𝜋/16	0.030	−2.113	0.074	−2.061	0.056	−2.050
3𝜋/16	−0.946	−2.300	−0.903	−2.275	−0.915	−2.262
𝜋/4	−1.784	−2.132	−1.737	−2.103	−1.749	−2.098
5𝜋/16	−2.446	−1.728	−2.377	−1.711	−2.395	−1.714
6𝜋/16	−2.885	−1.188	−2.826	−1.197	−2.851	−1.202
7𝜋/16	−3.127	−0.604	−3.092	−0.614	−3.123	−0.617
𝜋/2	−3.208	0	−3.180	0	−3.213	0