Fig. 7From: Numerical investigation of dynamic brittle fracture via gradient damage modelsConventional dynamic energy release rate \(G^\alpha \) as a function of the loading displacement. Three loading speeds k are used: \(k=0.1\approx 0.2c\), \(k=0.2\approx 0.4c\) and \(k=0.3\approx 0.7c\) Back to article page