PSI - Issue 25

Victor Rizov / Procedia Structural Integrity 25 (2020) 88–100

93

Author name / Structural Integrity Procedia 00 (2019) 000 – 000

6

here to evaluate the influence of the viscoelastic material behaviour on the delamination fracture in the multilayered cantilever beam configuration shown in Fig. 2. The beam is clamped in its right-hand end. The length of the beam is denoted by l .

Fig. 2. Geometry and loading of a multilayered cantilever beam with a delamination crack of length, a . The beam cross-section is a rectangle of width, b , and height, h (Fig. 3). A delamination crack of length, a , is located arbitrary between layers as shown in Fig. 2.

Fig. 3. Cross-section of the multilayered beam (the neutral axis position is marked by n n  ). The heights of the lower and the upper crack arms are denoted by 1 h and 2 h , respectively. The beam is loaded by one bending moment, M , applied at the free end of the lower crack arm. Apparently, the upper crack arm is free of