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Modeling of micro crack forming of fiber concrete using destruction mechanics

V. I. MorozovSaint-Petersburg State University of Architecture and Civil EngineeringYu. V. PukharenkoSaint-Petersburg State University of Architecture and Civil EngineeringA. O. HegaySaint-Petersburg State University of Architecture and Civil Engineering
Abstract: Methods of mechanics of destruction and the theory of cracks investigate development of the micro cracks focused along compressing efforts. The effect of braking of development of micro cracks with reduced distance between reinforcing fibers is theoretically described. In a basis of settlement model the law of change of normal pressure in a reinforcing fiber in micro crack vicinities is put. The factor value of intensity of pressure and its critical value is defined by summation of the solutions of two problems – Flaman for a semi-infinite plate influenced by tangent efforts and Irvin for a plate with the isolated crack influenced by stretching loading. The quantitative results adequately describing micro cracks formation, observed during experiments are received.

Keywords: mechanics of destructions, critical coefficient of intensity of tensions, measure of singularity.

Pages: 125-134.

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For citation:

For citation: Morozov, V. I.; Pukharenko, Yu. V.; Hegay, A. O. Modeling of micro crack forming of fiber concrete using destruction mechanics. – Text : electronic. – In: <em>Modern Industrial and Civil Construction</em>. – 2011. – Vol. 7, N 3. – Р. 125-134. – URL: https://donnasa.ru/publish_house/journals/spgs/2011-3/02_morozov_puharenko_hegaj.pdf (date of access: 22.12.2024). – ISSN 1993-3495.

Vol. 7, N 3 (2011)
Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture