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Crack closure effects in thermal fracture of functionally graded/homogeneous bimaterials with systems of cracks
Author(s) -
Petrova Vera,
Schmauder Siegfried
Publication year - 2015
Publication title -
zamm ‐ journal of applied mathematics and mechanics / zeitschrift für angewandte mathematik und mechanik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.449
H-Index - 51
eISSN - 1521-4001
pISSN - 0044-2267
DOI - 10.1002/zamm.201400294
Subject(s) - gradation , materials science , homogeneous , functionally graded material , microstructure , fracture (geology) , closure (psychology) , material properties , composite material , thermal , grain boundary , structural engineering , mathematics , computer science , engineering , physics , combinatorics , economics , market economy , computer vision , meteorology
In the presented model the microstructure of a functionally graded material (FGM) is accounted in two ways: via FGM properties and by distributed small cracks which could be on grain boundaries of the material. The contribution to the solution of material gradation of FGM and of material structure reflected via geometry of distributed cracks is investigated. Besides, some additional effects arising due to possible crack closure and contact of crack surfaces are taken into account in the model and its contribution is also assessed. The goal of this investigation is to show these affects and to estimate the contribution on the SIFs of each of these, if they are strong or can be neglected.