Stable path of interacting crack systems and micromechanics of damage

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dc.contributor.author Tabbara, Mazen R.
dc.contributor.author Kazemi, Mohammad T.
dc.contributor.author Bazant, Zdenek P.
dc.date.accessioned 2018-02-20T11:19:36Z
dc.date.available 2018-02-20T11:19:36Z
dc.date.issued 2018-02-20
dc.identifier.uri http://hdl.handle.net/10725/7105
dc.description.abstract Micromechanics of damage in brittle heterogeneous materials and composites requires analysis of a system of interacting cracks. The response path of a crack system typically exhibits bifurcations such that the states on each post-bifurcation branch can be stable yet only one branch can be reached in a stable manner. Recent results on thermodynamic criteria for stable states and stable response paths of inelastic structures are reviewed and formulated in terms of the incremental internal entropy of the system. The incremental entropy, which can be expressed in terms of second order work, is then calculated for various points on the response paths of some typical symmetric crack systems. It is shown that while the symmetric states may be stable, the path which leads to them is unstable and cannot occur in reality. Generally, nonsymmetry develops at the beginning of softening. The results show that it is insufficient to model distributed cracking only by means of crack systems and linear elastic fracture mechanics. Further aspects, such as material heterogeneity, residual stresses, and cohesive fracture zones for the microcracks, might have to be taken into account. en_US
dc.language.iso en en_US
dc.title Stable path of interacting crack systems and micromechanics of damage en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 199890270 en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.keywords Bifurcation en_US
dc.keywords Damage en_US
dc.keywords Entropy en_US
dc.keywords Fracture mechanics en_US
dc.keywords Stability en_US
dc.identifier.doi https://doi.org/10.1016/B978-0-08-034341-9.50220-5 en_US
dc.identifier.ctation BAŽANT, Z. P., TABBARA, M. R., & KAZEMI, M. T. (1989). Stable path of interacting crack systems and micromechanics of damage. In Proceedings of The 7th International Conference On Fracture (ICF7) (pp. 2141-2152). en_US
dc.author.email mtabbara@lau.edu.lb en_US
dc.conference.date 24 March 1989 en_US
dc.conference.pages 2141-2152 en_US
dc.conference.place Houston, Terxas en_US
dc.conference.title Proceedings of The 7th International Conference On Fracture (ICF7) en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://www.sciencedirect.com/science/article/pii/B9780080343419502205 en_US
dc.author.affiliation Lebanese American University en_US

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