CALIBRATION OF PARTICLE-BASED MODELS USING CELLS WITH PERIODIC BOUNDARY CONDITIONS

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F11%3A00187435" target="_blank" >RIV/68407700:21110/11:00187435 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
CALIBRATION OF PARTICLE-BASED MODELS USING CELLS WITH PERIODIC BOUNDARY CONDITIONS
Original language description
A systematic approach to the calibration of particle models is presented. The procedure is based on simulations of basic cells with periodic boundary conditions. Firstly, a calibration for elastic properties is explained. A very good agreement between the results of static FEM and quasi-static DEM simulations and theoretical formulas motivated by the microplane theory is found. Then, basic ideas of calibration of inelastic parameters using PBC are explained on the simple case of uniaxial tension. The dependence of the results on the periodic cell orientation with respect to the localized process zone is studied and the influence of the particle and cell size is covered as well. The gained knowledge is then applied in simulations of material failure under uniaxial compression and multiaxial loading. To demonstrate the applicability of the described method, the plane stress failure envelope for the investigated model is constructed for different combinations of microscopic parameters.
Czech name
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Czech description
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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