Fatigue Crack Paths 2003

computation made with Δ N = 20000 (Fig. 3) shows the efficiency of the implicit

method.

2h

δ

a

Figure 1. D C Bspecimen.

14

12

10

8

Analytic

Implicit

6

Euler

Imp. Euler

4

2

0

50

100

150

200

250

300

350

0

N (Kcycles)

Figure 2. Crack extension as a function of the number of cycles for Δ N= 4000.