Issue 30

Yu.G. Matvienko, Frattura ed Integrità Strutturale, 30 (2014) 311-316; DOI: 10.3221/IGF-ESIS.30.38 316 The three-dimensional stress field ahead of the through-thickness crack under mixed mode (I+II) loading conditions is also analyzed. The in-plane and out-of-plane constraint effect are discussed from viewpoint of the non-singular terms, namely, xx T -stress and zz T -stress, respectively. The significant effect of thickness and loading mode mixity of specimen on the zz T -stress in the middle plane of the crack front has been observed at the same non-singular xx T -stress. A CKNOWLEDGEMENTS he author acknowledges the support of the Russian Science Foundation (Project N 14-19-00383). R EFERENCES [1] Guo, W., Three-dimensional analyses of plastic constraint for through-thickness cracked bodies, Engineering Fracture Mechanics, 62 (1999) 383-407. [2] Henry, B.S., Luxmoore, A.R., The stress triaxiality constraint and the Q-value as ductile fracture parameter, Engineering Fracture Mechanics, 57 (1997) 375-390. [3] Nakamura, T., Parks, D. M., Determination of elastic T-Stress along three-dimensional crack fronts using an interaction integral, Int. J. of Solids and Structures, 29 (1992) 1597-1611. [4] Matvienko, Yu.G., Pochinkov, R.A., Effect of nonsingular T-stress components on the plastic deformation zones near the tip of a mode I crack, Russian Metallurgy (Metally), 4 (2013) 262–271. [5] Matvienko, Yu.G., The Effect of the non-singular T-stress components on crack tip plastic zone under mode I loading, Procedia Materials Science 3 (2014) 141 – 146. [6] Aliha, M.R.M., Ayatollahi, M.R., Smith, D.J., Pavier, M.J., Geometry and size effects on fracture trajectory in a limestone rock under mixed mode loading, Engineering Fracture Mechanics, 7 (2010) 2200–2212. [7] Matvienko, Yu. G., Chernyatin, A. S., Razumovsky, I. A., Shi, H.-J., Wang, Z.-X., The effect of thickness on components of the non-singular T-stress under mixed mode loading, In: 13 th International Conference on Fracture (ICF13), Beijing, China, (2013). [8] Matvienko, Yu. G., Chernyatin, A. S., Rasumovskii, I. A., Numerical analysis of the components of the three- dimensional non-singular stress field at a mixed-type crack tip, Journal of Machinery Manufacture and Reliability, 43 (2014) 242-249. [9] Matvienko, Yu.G., Two-parameter fracture mechanics in contemporary strength problems, Journal of Machinery Manufacture and Reliability, 42 (2013) 374-381. T