Numerical Simulation of Meso-Damage Process of Concrete under Dynamic Load and CT Experiment Verification

Abstract:

In mesoscopic level, concrete was taken as three-phase composites consisting of aggregate, bond and mortar. Use the Monte Carlo methods, establish random aggregate model of concrete and apply the concrete damage plasticity model. Judge the failure based on the load-displacement curve and then doing the numerical simulation to the specimen on the impact loads. Through CT test, get the CT images of various force stages of the concrete. Compare the damage process picture of the numerical simulation with CT test. Find the failure process of the numerical simulation is similar to the CT test. The results show that the model is right to simulate the damage and fracture of concrete which is under the dynamic load. It is established that the model of the method is feasible.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 299-303
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.299
• Online since: May 2012
• Authors: Guang Yu Lei, Fa Ning Dang, Feng Pan
• Keywords: CT Image, Impact Load, Load-Displacement Curve, Randomly Aggregate Model

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DOI: 10.3390/buildings12081232

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