Discrete crack dynamics: A planar model of crack propagation and crack-inclusion interactions in brittle materials. (November 2018)

• Record Type: Journal Article
• Authors: Ebrahimi, M.T.; Dini, D.; Balint, D.S.; Sutton, A.P.; Ozbayraktar, S.
• Is Part Of: International journal of solids and structures. Volume 152/153(2018)
• Page Start: 12
• Page End: 27
• Publication Date: 2018-11
• Subjects: Crack-inclusion interactions -- Multipole method -- Discrete crack dynamics; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2018.02.036
• Languages: English
• ISSNs: 0020-7683

Abstract

Abstract: The Multipole Method (MPM) is used to simulate the many-body self-consistent problem of interacting elliptical micro-cracks and inclusions in single crystals. A criterion is employed to determine the crack propagation path based on the stress distribution; the evolution of individual micro-cracks and their interactions with existing cracks and inclusions is then predicted using what we coin the Discrete Crack Dynamics (DCD) method. DCD is fast (semi-analytical) and particularly suitable for the simulation of evolving low-speed crack networks in brittle or quasi-brittle materials. The method is validated against finite element analysis predictions and previously published experimental data.