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Model uncertainties in numerical simulations of reinforced concrete structures
Author(s) -
Cervenka Vladimir,
Cervenka Jan,
Kadlec Lukas
Publication year - 2018
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201700287
Subject(s) - structural engineering , nonlinear system , finite element method , brittleness , computer simulation , range (aeronautics) , safety factor , constitutive equation , engineering , computer science , materials science , simulation , physics , quantum mechanics , composite material , aerospace engineering
Numerical simulation based on the nonlinear fine element analysis requires a global safety format, which includes a model uncertainty. A general method for assessment of a global safety factor of model uncertainty is proposed for a particular resistance model. A set of 33 laboratory tests of reinforced concrete elements published by other authors is used for the model validation. It covers a wide range of failure models from brittle to ductile, and the member cross section size range from 0.1 to 4 m. The numerical model used for simulation is the fracture‐plastic constitutive model for concrete developed by the authors and implemented in the nonlinear finite element analysis in a commercial software.