Evolution of tenacity in mixed mode fracture - volumetric approach

• Autorzy: Zebri O. , El Minor H. , Bendarma A.
• Języki publikacji: EN

Abstrakty

EN

In fracture mechanics most interest is focused on stress intensity factors, which describe the singular stress field ahead of a crack tip and govern fracture of a specimen when a critical stress intensity factor is reached. In this paper, stress intensity factors which represents fracture toughness of material, caused by a notch in a volumetric approach has been examined, taking into account the specific conditions of loading by examining various U-notched circular ring specimens, with various geometries and boundary conditions, under a mixed mode I+II. The bend specimens are computed by finite element method (FEM) and the local stress distribution was calculated by the Abaqus/CAE. The results are assessed to determine the evolution of the stress intensity factor of different notches and loading distances from the root of notch. This study shows that the tenacity is not intrinsic to the material for all different geometries notches.

Słowa kluczowe

EN

equivalent notch stress intensity factors; mixed mode fracture; stress intensity factor; tenacity; volumetric approach

PL

naprężenie karbu; układy mieszane; pękanie; współczynnik intensywności naprężeń; wytrwałość; podejście objętościowe

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 22, nr 4
• Strony: 931--938
• Opis fizyczny: Bibliogr. 11 poz., il. kolor., rys.

Twórcy

autor

Zebri O.

• LIDRA Laboratory, Research team MEER, Universiapolis - Ecole Polytechnique d'Agadir, Morocco

autor

El Minor H.

• Research Team 2MGC, ENSA Agadir, Morocco

autor

Bendarma A.

• Poznan University of Technology, Institute of Structural Engineering, Poland

Bibliografia

• [1] Stroh: La rupture des matériaux, in: Francois, D. and Joly, L. (Ed.), Masson and Co, Paris, 1972.
• [2] El Hadim, B., El Minor, H.: Stress triaxiality to evaluate the effective distance in the volumetric approach in fracture mechanics, Journal of Mechanical and Civil Engineering, 21-26, 2011.
• [3] Meliani, M.H., Matvienko, Y.G. and Pluvinage, G.: Two parameter fracture criterion (K ρ, c - T ef, c) based on notch fracture mechanics, International Journal of Fracture, 167(2), 173-182, 2011.
• [4] El Hadim, B., El Minor, H., Hilali, E.: Fracture toughness transferability in pipe with external oriented defect, International Review of Mechanical Engineering, 5(5), 2011.
• [5] El Minor, H., Louah, M., Azari, Z., Pluvinage, G., Kifani, A.: Brittle mixed mode fracture I+II: Emanating from notches equivalent notch stress intensity factor -H, Transferability of Fracture Mechanical Characteristics, 78, 337-350, 2002.
• [6] Khan, S.M., Khraishes, M.K.: Analysis of mixed mode crack initiation angles under various loading conditions, Engineering Fracture Mechanics, 67(5), 397-419, 2000.
• [7] Sih, G.C., Eedogan, F.: On the crack extension in plates under plane loading and transverse shear, J. Basic Eng., 1963.
• [8] Irwin, G.R.: Plastic zone near a crack and fracture toughness, Proceedings Seventh Sagamore Conference, IV-63, 1960.
• [9] Al Gaoudi, O., El Minor, H., Hilali, E., El Minor, H., Bahraoui, I., Pluvinage, G., Azari, Z.: Critical notch stress intensity factor concept for pure mode II, International Review of Mechanical Engineering, 8(3), 524-529, 2014.
• [10] Ritchie, R.O., Knott, J.F., Rice, J.R.: On the relationship between critical tensile stress and fracture toughness in mild steel, Journal of the Mechanics and Physics of Solids, 21(6), 395-410, 1973.
• [11] Zebri, O., El Minor, H., Bendarma, A.: Plastic zone and effective distance under mixed mode fracture - Volumetric approach, ISOR Journal of Mechanical and Civil Engineering, 13(2), Ver. III (Mar-Apr. 2016), 57-63, 2016.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).