Mode II brittle fracture assessment using an energy based criterion
- Authors: Rashidi Moghaddam M.1, Ayatollahi M.R.1, Razavi S.M.1, Berto F.2
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Affiliations:
- Fatigue and Fracture Laboratory, Centre of Excellence in Experimental Solid Mechanic and Dynamics, School of Mechanical Engineering
- Department of Engineering Design and Materials
- Issue: Vol 20, No 2 (2017)
- Pages: 142-148
- Section: Article
- URL: https://journals.rcsi.science/1029-9599/article/view/191470
- DOI: https://doi.org/10.1134/S1029959917020047
- ID: 191470
Cite item
Abstract
In this paper the minimum strain energy density criterion is modified to predict the values of mode II fracture toughness reported in the literature for several brittle and quasi-brittle materials. The experimental results are all related to mode II fracture tests performed on the semicircular bend specimen. The modified mode II fracture criterion takes into account the effect of T-stress (in addition to the singular terms of stresses/strains) when calculating the strain energy density factor at a very small critical distance from the crack tip. It is shown that the proposed criterion provides significantly better predictions for mode II fracture toughness compared with the classical minimum strain energy density criterion.
About the authors
M. Rashidi Moghaddam
Fatigue and Fracture Laboratory, Centre of Excellence in Experimental Solid Mechanic and Dynamics, School of Mechanical Engineering
Email: m.ayat@iust.ac.ir
Iran, Islamic Republic of, Narmak, Tehran, 16846
M. R. Ayatollahi
Fatigue and Fracture Laboratory, Centre of Excellence in Experimental Solid Mechanic and Dynamics, School of Mechanical Engineering
Author for correspondence.
Email: m.ayat@iust.ac.ir
Iran, Islamic Republic of, Narmak, Tehran, 16846
S. M. J. Razavi
Fatigue and Fracture Laboratory, Centre of Excellence in Experimental Solid Mechanic and Dynamics, School of Mechanical Engineering
Email: m.ayat@iust.ac.ir
Iran, Islamic Republic of, Narmak, Tehran, 16846
F. Berto
Department of Engineering Design and Materials
Email: m.ayat@iust.ac.ir
Norway, Trondheim, 7491