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Damage and progressive failure of concrete structures using non-local peridynamic modeling

Science china(Technological Sciences) 2011年第3期54卷 591-596页

作者： huang dan1,2. zhang qing1,{2.,3 1 state key laboratory of hydrology-water resources and hydraulic engineering, hohai university, nanjing 2.0098, china 2.Department of engineering Mechanics, hohai university, nanjing 2.0098, china 3 Department of Civil and Environmental engineering, Washington {12. university, Pullman, WA 99164-2.10, USA 1. state key {2. of hydrology-water resources and hydraulic engineering Hohai University Nanjing 210098 China2. Department of Engineering Mechanics Hohai University Nanjing 210098 China3. Department of Civil and Environmental Engineering Washington State University Pullman WA 99164-2910 USA

Peridynamics (PD), a recently developed theory of solid mechanics, which employs a non-local model of force interaction and makes use of integral formulation rather than the spatial partial differential equations used in the classical continuum mechanics theory, has shown effectiveness and promise in solving discontinuous problems at both macro and micro scales. In this paper, the peridynamics theory is used to analyze damage and progressive failure of concrete structures. A non-local peridynamic model for a rectangular concrete plate is developed, and a central pairwise force function is introduced to describe the interior interactions between particles within some definite distance. Damage initiation, evolution and crack propagation in the concrete model subject to in-plane uni-axial tension, in-plane uni-axial compression and out-of-plane impact load are investigated respectively. The numerical results show that discontinuities appear and grow spontaneously as part of the solution to the peridynamic equations of motion, and no special failure criteria or re-meshing techniques are required, which proves the potential of peridynamic modeling as a promising technique for analyzing the progressive failure of concrete materials and structures.

关键词： concrete damage progressive failure peridynamic model discontinuities

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