PSI - Issue 14

Pankaj Kumar et al. / Procedia Structural Integrity 14 (2019) 96–103 Author name / Structural Integrity Procedia 00 (2018) 000 – 000

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Fig. 5. Experimental and simulated hysteresis loops at 0.6% strain amplitude for (a) cryorolled; (b) annealed cryorolled AA 5754 alloy

The material parameters listed in Table 3 have been used for simulating the LCF hysteresis loop for other strain amplitudes. The simulated results for lower strain amplitude are shown in Fig. 6. The simulated results reveal that the model can accurately simulate the LCF behaviour of CR and ACR alloys.

Fig. 6. Experimental and simulated hysteresis loops at 0.5% strain amplitude for (a) cryorolled; (b) annealed cryorolled AA 5754 alloy

The XFEM simulations are performed to trace the tensile curve till fracture of the specimens. Eight noded quadrilateral elements are used for meshing the computational domain.

Fig. 7. von-Mises stress distribution during tensile simulation for (a) cryorolled; (b) annealed cryorolled AA 5754 alloy