PSI - Issue 13

Paul Judt et al. / Procedia Structural Integrity 13 (2018) 155–160 Author name / Structural Integrity Procedia 00 (2018) 000–000

160

6

0.9

1

3

ϕ = − 35 ◦ ϕ = − 40 ◦ ϕ = − 45 ◦ ϕ = − 50 ◦ ϕ = − 55 ◦

material tractions

a = 0

average ERR

0.85

0.75

2.25

ϑ

ϕ

2 )

0.5

1.5

0.8

G ∗ / (N/mm)

G ∗ / (N/mm)

| q k | / (N/mm

γ = 45 ◦

0.25

0.75

0.75

a = 0 . 1

0

0

0.7

− 0 . 50 π

− 0 . 25 π

− 0 . 05 π

− 0 . 1 π

0

0 . 25 π

0 . 50 π

0

0.1 π

0.05 π

ϑ / -

ϕ / -

(b) Distribution of average ERR G ∗ at di ff erent notch positions ϕ and initiation angles ϑ ; crack initiation length a = 0 . 1 mm

(a) Distribution of material tractions q k along the notch surface; average ERR G ∗ for perpendicularly initiating cracks ( ϑ = 0) at di ff erent notch positions ϕ

Fig. 2. Distribution of material tractions and average ERR at the surface of a U-shaped notch; e ff ect of the crack initiation angle ϑ

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