By Alberto Carpinteri (auth.), Alberto Carpinteri (eds.)
In this quantity a survey of the main suitable nonlinear crack types is equipped, with the aim of interpreting the nonlinear mechanical results taking place on the tip of macrocracks in quasi-brittle fabrics - comparable to concrete, rocks, ceramics, polymers, high-strength metal alloys - and in brittle-matrix fibre-reinforced composites. Such neighborhood results, as, for instance, plastic deformation, yielding, strain-hardening, strain-softening, mechanical harm, matrix microcracking, mixture debonding, fibre bridging, fibre slippage, crazing, and so forth, are correctly defined via diversified simplified types, representing the peculiarities of the phenomena concerned. The types are brought and defined individually after which in comparison within the final a part of the e-book.
This quantity may be of curiosity to scholars, execs and researchers within the box of nonlinear fracture mechanics.
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During this quantity a survey of the main appropriate nonlinear crack types is supplied, with the aim of examining the nonlinear mechanical results taking place on the tip of macrocracks in quasi-brittle fabrics - akin to concrete, rocks, ceramics, polymers, high-strength metal alloys - and in brittle-matrix fibre-reinforced composites.
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52 CHAPTER 2 For an exact evaluation of the stress and strain fields along any direction, an appropriate composite finite element, that has been denominated octagonal core, is positioned at each crack tip: the different elements may have different elastic moduli due to the variability of material damage around the crack tip as a consequence of Eq. 14). 23. Structure of the octagonal core and magnification of a central element with non-unifonn spaced nodes. The octagonal core is made up of 12 quadrilateral elements, 4 central ones and 8 peripheral ones (Fig.
Editors): Fracture Mechanics Test Methods for Concrete, XII + 287, Chapman & Hall, London and New York, 1991. 92. Carpinteri, A. (Editor): Applications of Fracture Mechanics to Reinforced Concrete, XIV + 616, Elsevier Applied Science, London and New York, 1992. 93. Carpinteri, A. (Co-editor): Locali=ed Damage: Computer-Aided Assessment and Control, XIV + 736, Computational Mechanics Publications, Southampton, 1994. 94. , Carpinteri, A. and Surace, G. (Editors): Advanced Technology for Design and Fabrication of Composite Materials and Structures, XX + 438, Kluwer Academic Publishers, Dordrecht Boston London, 1995.
II. ) 14 (1981), 151-162. 12. Carpinteri, A: Notch sensitivity in fracture testing of aggregative materials, Engineering Fracture Mechanics 16 (1982), 467-481. 13. ) 108 (1982),833-848. 14. Carpinteri, A: Sensitivity and stability of progressive cracking in plain and reinforced cement composites, The International Journal of Cement Composites and Lightweight Concrete 4 (1982), 4756. 15. Carpinteri, A: Plastic flow collapse vs. ) 16 (1983),85-96. 16. Carpinteri, A: Size effects in material strength due to crack growth and material non-linearity, Theoretical and Applied Fracture Mechanics 1 (1984), 39-46.
Nonlinear Crack Models for Nonmetallic Materials by Alberto Carpinteri (auth.), Alberto Carpinteri (eds.)