Publicado 6 números por año
ISSN Imprimir: 1543-1649
ISSN En Línea: 1940-4352
Indexed in
COMPUTATIONAL MODELING OF DAMAGE BASED ON MICROCRACK KINKING
SINOPSIS
The paper presents numerical results for a two-scale damage model accounting for mixed-mode propagation of microcracks. A time-dependent propagation criterion is assumed for microcrack growth and a kinking direction criterion based on the maximum of the energy-release rate is used. The macroscopic damage evolution laws are obtained by homogenization based on asymptotic developments. A numerical procedure based on finite elements is developed for the two-scale model and simulations illustrating the structural response are presented. A priori microscopic computations increase the efficiency of the computational model at the scale of macroscopic structures. The resulting homogenized behavior involves softening and localization of damage. Direct links between macroscopic damage evolution and microscopic propagation of micro-cracks are established within the two-scale model.
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Atiezo M. K., Dascalu C., Antiplane two-scale model for dynamic failure, International Journal of Fracture, 206, 2, 2017. Crossref
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Dascalu Cristian, Multiscale modeling of rapid failure in brittle solids: Branching instabilities, Mechanics of Materials, 116, 2018. Crossref
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Dascalu Cristian, Dynamic localization of damage and microstructural length influence, International Journal of Damage Mechanics, 26, 8, 2017. Crossref
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Atiezo Megbeme Komla, Chen Wen, Dascalu Cristian, Loading rate effects on dynamic failure of quasi-brittle solids: Simulations with a two-scale damage model, Theoretical and Applied Fracture Mechanics, 100, 2019. Crossref
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Atiezo Megbeme K., Gbetchi Kokouvi, Dascalu Cristian, Dynamic shear damage with frictional sliding on microcracks, Engineering Fracture Mechanics, 236, 2020. Crossref