Fig. Single-edge notched tension test. crack phase-field contour plot for \(\mathbf{n}\mathbf{=1.5}\)and \(\mathbf{n}\mathbf{=1.8}\) (quite similar) in various stages
In Fig.4, for smaller values of n , the curve becomes more unstable at the end and drops with more steeply, and failure occurs suddenly. In this situation, the cracks may deviate from the straight path and grow in the wrong direction. Hence, the use of larger values ofn can lead to more accurate results.