首页|Numerical investigation on effect of randomized mesoscopic heterogeneity in stochastically located arbitrary shaped aggregates in impact response of reinforced concrete
Numerical investigation on effect of randomized mesoscopic heterogeneity in stochastically located arbitrary shaped aggregates in impact response of reinforced concrete
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NSTL
Elsevier
A numerical methodology is endeavoured to infuse the inherent heterogeneity of reinforced concrete (RC) when subjected to low-velocity impact loading contrary to the existing practice of homogenized model. Coarse aggregates are inserted as a form of inclusion with varying shape, material properties and arranged randomly across the volume. Weibull statistics has been used to quantify the random variation of material properties. A suitable damage plasticity model is used with mapped inelastic and cracking behaviour for a given grade of concrete. After validating the present model with experimental evidences in literature, the plastic work done and the energy dissipation are investigated. It was observed that the plastic work accumulation at supports loses its symmetric pattern, particularly at time-instant of maximum deformation, when present formulation of heterogeneity is considered. This significantly affects the damage accumulation and nucleation of cracks during the impact event as observed in the global failure patterns across sections at different longitudinal locations.
Impact responseHeterogeneityEnergy dissipationSpecific plastic work doneTENSILE-FAILURERC BEAMSBEHAVIORSIMULATIONSTRENGTHMODELSIZEVELOCITYFRACTURETESTS
NSTL
Elsevier
