- Title
- Dynamic numerical simulation of pre-cracked concrete samples under different mechanical parameters
- Creator
- Zhang, W. B.; Wang, S. Y.
- Relation
- The 4th International Conference on Material Strength and Applied Mechanics (MSAM 2021). The Proceedings of the 4th International Conference on Material Strength and Applied Mechanics (MSAM 2021), [presented in Journal of Physics, Vol. 2047, No. 1] (Macau, China 16-19 August, 2021) p. 1-16
- Publisher Link
- http://dx.doi.org/10.1088/1742-6596/2047/1/012012
- Publisher
- Institute of Physics (IOP)
- Resource Type
- conference paper
- Date
- 2021
- Description
- Numerical simulations of pre-cracked concrete subjected to dynamic impact compressive stress wave are carried out via DRFPA (Dynamic Realistic Failure Process Analysis). This code is validated firstly by comparing experimental results. Then, the initiation, propagation and coalescence of wing cracks and secondary cracks are numerically investigated by varying elastic modulus, uniaxial compressive strength, and homogeneity index of some phases (bond and aggregate) of concrete. The numerically simulated concrete failure mode (tension/shear failure) and its development in both quasi-coplanar plane and concrete bridge are analyzed and discussed. Numerical results show that the tension failure occurs firstly whereas shear failure occurs shortly thereafter with continuous dynamic loadings and its reflected wave. Meanwhile, the evolution of wing cracks and secondary cracks are numerically investigated. In addition, the effect of elastic modulus, uniaxial compressive strength, and homogeneity index of concrete phases on the crack evolutions are also studied.
- Subject
- compressive strength; concrete aggregates; dynamic loads; dynamics; failure (mechanical); numerical models
- Identifier
- http://hdl.handle.net/1959.13/1438633
- Identifier
- uon:40670
- Identifier
- ISSN:1742-6588
- Language
- eng
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