Multiscale numerical study of fracture and strength characteristics of zirconium alumina concrete with use of the particle-based MCA method

摘要

In the present paper the multiscale approach to the construction of multiscale Theological models of brittle materials with heterogeneous internal structure is implemented within the numerical method of movable cellular automata (MCA). Nikolaevsky's plasticity model with non-associated flow law was chosen as a Theological model for zirconium alumina concrete at the different structural scales. The mechanical properties (including parameters of the Theological model and strength values) of zirconium alumina concrete were obtained for both macroscopic and mesoscopic scales. The effect of strain rate on material behavior was analyzed in case of uniaxial compression and tension.