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A platform for research: civil engineering, architecture and urbanism
Experimentally validated peridynamic fracture modelling of mortar at the meso-scale
https://orcid.org/0000-0002-7788-3548
Highlights PD theory can predict the load-displacement response and crack pattern of mortar. Four stages are observed in the stress-strain curves, which agrees with experiments. Strong ITZ leads a more brittle post-peak behaviour. Loading direction has limited impact on strength and elastic properties.
Abstract Peridynamics (PD) model is a nonlocal theory to describe the formation of discontinuities, e.g., cracks and fractures due to deformations in the displacement field. The current study aims at implementing the Peridynamics theory on the fracture performance modelling of mortar at the meso-scale. For this purpose, a computational uniaxial tension test was performed on a multi-phase virtual specimen consisting of sand, hydrated cement paste and air voids. The mechanical properties of each phase were derived from the recent outcome of micromechanical models. The modelling results (stress-strain response and fracture pattern) were compared with the experimental observations in the literature. The comparison shows that, without further calibration, the PD theory can predict the load-displacement response and crack pattern satisfactorily. The model was further used to explain the load-displacement response and fracture process.
Experimentally validated peridynamic fracture modelling of mortar at the meso-scale
https://orcid.org/0000-0002-7788-3548
Highlights PD theory can predict the load-displacement response and crack pattern of mortar. Four stages are observed in the stress-strain curves, which agrees with experiments. Strong ITZ leads a more brittle post-peak behaviour. Loading direction has limited impact on strength and elastic properties.
Abstract Peridynamics (PD) model is a nonlocal theory to describe the formation of discontinuities, e.g., cracks and fractures due to deformations in the displacement field. The current study aims at implementing the Peridynamics theory on the fracture performance modelling of mortar at the meso-scale. For this purpose, a computational uniaxial tension test was performed on a multi-phase virtual specimen consisting of sand, hydrated cement paste and air voids. The mechanical properties of each phase were derived from the recent outcome of micromechanical models. The modelling results (stress-strain response and fracture pattern) were compared with the experimental observations in the literature. The comparison shows that, without further calibration, the PD theory can predict the load-displacement response and crack pattern satisfactorily. The model was further used to explain the load-displacement response and fracture process.
Experimentally validated peridynamic fracture modelling of mortar at the meso-scale
https://orcid.org/0000-0002-7788-3548
Highlights PD theory can predict the load-displacement response and crack pattern of mortar. Four stages are observed in the stress-strain curves, which agrees with experiments. Strong ITZ leads a more brittle post-peak behaviour. Loading direction has limited impact on strength and elastic properties.
Abstract Peridynamics (PD) model is a nonlocal theory to describe the formation of discontinuities, e.g., cracks and fractures due to deformations in the displacement field. The current study aims at implementing the Peridynamics theory on the fracture performance modelling of mortar at the meso-scale. For this purpose, a computational uniaxial tension test was performed on a multi-phase virtual specimen consisting of sand, hydrated cement paste and air voids. The mechanical properties of each phase were derived from the recent outcome of micromechanical models. The modelling results (stress-strain response and fracture pattern) were compared with the experimental observations in the literature. The comparison shows that, without further calibration, the PD theory can predict the load-displacement response and crack pattern satisfactorily. The model was further used to explain the load-displacement response and fracture process.
Experimentally validated peridynamic fracture modelling of mortar at the meso-scale
Hou, Dongshuai (author) / Zhang, Wei (author) / Ge, Zhi (author) / Wang, Pan (author) / Wang, Xinpeng (author) / Zhang, Hongzhi (author)
2020-09-12
Article (Journal)
Electronic Resource
English
Experimentally validated multi-scale modelling scheme of deformation and fracture of cement paste
| British Library Online Contents | 2017
Experimentally validated multi-scale modelling scheme of deformation and fracture of cement paste
| British Library Online Contents | 2017