Finite element modelling of fibre-reinforced brittle materials
作者： Jyrki Kullaa
DOI:
关键词: Kevlar 、 Fracture (geology) 、 Beam (structure) 、 Structural engineering 、 Finite element method 、 Ultimate tensile strength 、 Materials science 、 Parametric statistics 、 Composite material 、 Brittleness 、 Plasticity
摘要: The tensile constitutive behaviour of fibre-reinforced brittle materials can be extended to two or three dimensions by using the finite element method with crack models. approaches in this study include smeared and discrete concepts a multi-surface plasticity model. relation represents normal stress-normal strain behaviour. Depending on fracture mode - single multiple different modelling strategies must considered. Applications short steel densified small particles (DSP) beam, kevlar beams without ordinary reinforcing bars, concrete pipe. increase peak load due fibres could reproduced, which supports validity proposed method. All relations have been computed from micromechanical properties. Some micro mechanical properties obtained trial error fitting experimental results. Once are fixed, parametric is possible varying e.g. fibre content length.
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