PSI - Issue 23

I.A. Volkov et al. / Procedia Structural Integrity 23 (2019) 281–286 Author name / StructuralIntegrity Procedia 00 (2019) 000 – 000

286

6

Fig. 5.

Fig. 6.

In the Figures, the solid lines represent the numerical results, and the dashed lines show the corresponding experimental results. Figs. 5, 6, for the experiment shown in Fig. 4, give the relations for: effective stresses 11  as a function of process time t (Fig. 5); value of damage  as a function of process time t (Fig. 6). 4. Conclusion A mathematical model of mechanics of damaged media has been developed, which describes processes of inelastic deformation and damage accumulation in structural materials (metals and their alloys) in the presence of degradation of the initial properties of the materials according to the long-term strength mechanism. The reliability of the defining equations of MDM was assessed, using numerical modeling and comparison of the obtained results with test data, making it possible to conclude that the developed modelling representations are reliable, and the developed methodology accurately evaluates the material parameters contained in the above relations.

Acknowledgements

This work was supported by a grant from the Government of the Russian Federation (contract No. 14.Y26.31.0031).

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