Abstract
The paper develops in the case of mixed-mode fracture: criteria of nonpropagation crack and fracture criteria, for mechanical structures, taking into account the deterioration, namely general relations for the superposition of loadings corresponding to the three fracture modes. It refers to the concepts of stress intensity factor, crack tip opening displacement and J-integral; new fracture criteria taking into account the deterioration, the rate of loading and the scattering of the material characteristics were established. The relations obtained have been compared and verified against experimental data and empirical relations reported in literature. The numerical example allows one to comprehend the practical use of the established relations.
Publisher
Academia de Stiinte Tehnice in Romania
Reference56 articles.
1. "[1] Jinescu V.V., Principiul energiei critice şi aplicaţiile sale, Editura Academiei Române, Bucureşti, 2005.
2. [2] Jinescu, V.V., Cumulation of Effects in calculation the Deterioration of Fatigue loaded Structures, Int. J. Damage Mech., 21, 2012, p. 671-695.
3. [3] Jinescu V.V., Iordăchescu V.I., Calculation of deterioration due to cracks in tubular specimens, UPB Scientific Bulletin, Series D, 77, 2014, p. 49-160.
4. [4] Jinescu V.V., Nicolof V-I, Teodorescu N., Effects Superposition under Imposed Deterioration and Simultaneous Fatigue in Different Regimes., Int. J. Damage Mech., 26, 2017, p. 633-650.
5. [5] Jinescu V.V., Nicolof V-I, Chelu, A., Manea S.-E, Calculation of the local critical state taking into account the deterioration and the residual stresses, J Eng. Sci. and Innovation, 2, 2017, p. 9-21.