Plastic-damage model for concrete in principal directions - Condensed Matter Materials ScienceReport as inadecuate




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Abstract: In the present paper a plastic-damage model for concrete is discussed. Basedon the fact that for isotropic materials the elastic trial stress and theprojected plastic stress states have the same eigenvec-tors, the loadingsurface is formulated in the principal stress space rather than using theinvariants of stress tensor. The model assumes that the directions oforthotropic damage coincide with principal directions of elastic predictorstress state motivated by coaxial rotated crack model. Due to thisassumption, the load-ing surface and the closest point projection algorithm canstill be formulated in the principal directions. The evolution of the inelasticstrain is determined using minimization principle. Damage and plastic parts ofthe inelastic strain are separated using a scalar parameter, which is assumedto be stress dependent. The paper also discusses an effective numericalimplementation. The performance of the model is demonstrated on oneillustrative example.



Author: Sergey Ananiev, Josko Ozbolt

Source: https://arxiv.org/







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