Combined Visibility and Surrounding Triangles Method for Simulation of Crack Discontinuities in Meshless Methods

Table 3

𝐹(𝑎/𝑊) for point loaded specimens [27].

Compact tension (CT) specimen	2+𝑎/𝑊(1−𝑎/𝑊)^3/2[0.886+4.64(𝑎/𝑊)−13.32(𝑎/𝑊)^2+14.72(𝑎/𝑊)^3−5.60(𝑎/𝑊)^4]
Disk-shaped compact specimen	2+𝑎/𝑊(1−𝑎/𝑊)^3/2[0.76+4.8(𝑎/𝑊)−11.58(𝑎/𝑊)^2+11.43(𝑎/𝑊)^3−4.08(𝑎/𝑊)^4]
Arc-shaped specimen	(3𝑋/𝑊+1.9+1.1(𝑎/𝑊))[1+0.25(1−𝑎/𝑊)^2×(1−𝑟1/𝑟2)]𝑔(𝑎/𝑊)where:𝑔(𝑎/𝑊)=𝑎/𝑊(1−𝑎/𝑊)^3/2[3.74−6.30(𝑎/𝑊)+6.32(𝑎/𝑊)^2−2.43(𝑎/𝑊)^3]