TAILIEUCHUNG - Numerical evaluation of mode I/II SIF of quasi-brittle materials using cracked semi-circular bend specimen

An in-house finite element code was utilized to evaluate mode I/II stress intensity factor (SIF) of an edge cracked semi-circular disc subjected to three-point bending. | Numerical evaluation of mode I II SIF of quasi-brittle materials using cracked semi-circular bend specimen Engineering Solid Mechanics 2018 175-186 Contents lists available at GrowingScience Engineering Solid Mechanics homepage esm Numerical evaluation of mode I II SIF of quasi-brittle materials using cracked semi-circular bend specimen A. S. Fayeda a Materials Engineering Department Faculty of Engineering Zagazig University Zagazig Egypt On leave for the Mechanical Engineering Department Faculty of Engineering Jazan University KSA A R T I C L EI N F O ABSTRACT Article history An in-house finite element code was utilized to evaluate mode I II stress intensity factor SIF Received 26 October 2017 of an edge cracked semi-circular disc subjected to three-point bending. The specimen was Accepted 14 January 2018 considered as an isotropic and homogeneous material. Relative span length ratios of to Available online in steps of were invoked. Relative crack length ratios of and were 14 January 2018 Keywords analyzed with crack angles up to 60 in steps of 5 . At the same crack length mode I SIF Three-point bending decreases with increasing crack angle or decreasing the span length. The range of pure mode Cracked semi-disc II decreases with increasing the span length. For the same crack length the crack angle Modes I and II stress intensity corresponding to the transition from a mixed mode I II to a pure mode II increases with factors increasing the relative span length ratio. On the contrary that angle decreases with increasing Finite element method the crack length for the same span length. Good agreement has been generally obtained with relevant results found in the literature. 2018 Growing Science Ltd. All rights reserved. 1. Introduction Ductile and brittle failures are two commonly mechanisms of failure in engineering structures and components. Ductile mechanism frequently arises in ductile materials. Large .

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