Research Article

Computation of Energy Release Rates for a Nearly Circular Crack

Table 1

Numerical convergence for the energy release rate, 𝐺 ( 𝜑 ) for 𝑓 ( 𝜁 ) = 𝜁 + 𝑐 𝜁 3 when 𝑐 = 0 . 1 .

𝑁 𝐺 ( 0 . 0 0 ) 𝐺 ( 𝜋 / 4 ) 𝐺 ( 𝜋 / 2 ) 𝐺 ( 3 𝜋 / 4 ) 𝐺 ( 𝜋 )

0 7 . 8 6 7 6 𝐸 1 0 9 . 0 1 2 3 𝐸 1 0 1 . 6 0 6 7 𝐸 0 9 9 . 0 1 2 3 𝐸 1 0 7 . 8 6 7 6 𝐸 1 0
1 7 . 2 7 2 4 𝐸 1 0 8 . 9 3 9 2 𝐸 1 0 1 . 3 1 5 9 𝐸 0 9 8 . 9 3 9 2 𝐸 1 0 7 . 2 7 2 4 𝐸 1 0
2 9 . 2 6 6 8 𝐸 0 7 7 . 4 6 5 2 𝐸 1 0 1 . 5 6 4 9 𝐸 0 9 7 . 4 6 5 2 𝐸 1 0 9 . 2 6 6 8 𝐸 0 7
3 0 . 0 0 0 0 𝐸 + 0 0 0 . 0 0 0 0 𝐸 + 0 0 6 . 3 5 1 7 𝐸 1 0 0 . 0 0 0 0 𝐸 + 0 0 0 . 0 0 0 0 𝐸 + 0 0
4 1 . 1 8 5 9 𝐸 0 5 7 . 4 0 4 1 𝐸 1 9 4 . 6 7 0 9 𝐸 0 9 7 . 4 0 4 1 𝐸 1 9 1 . 1 8 5 9 𝐸 0 5
5 3 . 1 4 2 9 𝐸 0 3 8 . 8 2 1 1 𝐸 0 4 9 . 2 5 2 8 𝐸 0 6 8 . 8 2 1 1 𝐸 0 4 3 . 1 4 2 9 𝐸 0 3
6 3 . 0 4 2 1 𝐸 0 3 8 . 7 9 0 8 𝐸 0 4 9 . 5 7 9 1 𝐸 0 4 8 . 7 9 0 8 𝐸 0 4 3 . 0 4 2 1 𝐸 0 3
7 1 . 5 7 9 4 𝐸 0 3 8 . 4 3 0 8 𝐸 0 4 9 . 2 9 4 5 𝐸 0 4 8 . 4 3 0 8 𝐸 0 4 1 . 5 7 2 1 𝐸 0 3
8 9 . 7 5 5 7 𝐸 0 4 1 . 1 9 0 3 𝐸 0 3 9 . 5 0 0 1 𝐸 0 4 1 . 1 9 0 3 𝐸 0 3 9 . 7 5 5 7 𝐸 0 4
9 9 . 7 5 5 7 𝐸 0 4 1 . 1 9 0 3 𝐸 0 3 9 . 5 0 0 1 𝐸 0 4 1 . 1 9 0 3 𝐸 0 3 9 . 7 5 5 7 𝐸 0 4
10 9 . 7 5 5 7 𝐸 0 4 1 . 1 9 0 3 𝐸 0 3 9 . 5 0 0 1 𝐸 0 4 1 . 1 9 0 3 𝐸 0 3 9 . 7 5 5 7 𝐸 0 4