Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bond behavior simulation of deformed rebar in fiber-reinforced cementitious composites using three-dimensional meso-scale model
https://orcid.org/0000-0002-2023-1565
https://orcid.org/0000-0002-9850-026X
https://orcid.org/0000-0003-1767-9702
Abstract Fiber-reinforced cementitious composites (FRCC) can effectively develop the bond ductility of deformed rebar due to the high tensile resistance and strain capacity. This study presents a numerical method to evaluate the bond behavior of deformed rebar in FRCC based on 3D rigid body spring model (3D RBSM). Beam elements are used to model the rebar and the link elements are used to connect beam elements with RBSM elements as matrix. The same local bond-slip relationship for rebar is assigned at the link elements for both the simulation cases of plain mortar and FRCC. The model could properly simulate the single fiber to mechanical behavior of FRCC and the bond performance of rebar in FRCC. The results revealed that discrete fibers are the principal factors that preventing the splitting bond crack propagation and the stress propagation suggests the presence of high local bond stress around the rebar, improving bond ductility.
Graphical abstract Display Omitted
Highlights FRCC model with beam element-based rebar model is used to study the bond performance of deformed rebar in FRCC. Model simulates well the individual fiber level to mechanical behavior of FRCC. The proper bond performance of rebar in FRCC are achieved by using same local bond model of rebar as used in plain mortar. The state-of-the-art internal bond stress mechanism in matrix can well exhibit by the FRCC model.
Bond behavior simulation of deformed rebar in fiber-reinforced cementitious composites using three-dimensional meso-scale model
https://orcid.org/0000-0002-2023-1565
https://orcid.org/0000-0002-9850-026X
https://orcid.org/0000-0003-1767-9702
Abstract Fiber-reinforced cementitious composites (FRCC) can effectively develop the bond ductility of deformed rebar due to the high tensile resistance and strain capacity. This study presents a numerical method to evaluate the bond behavior of deformed rebar in FRCC based on 3D rigid body spring model (3D RBSM). Beam elements are used to model the rebar and the link elements are used to connect beam elements with RBSM elements as matrix. The same local bond-slip relationship for rebar is assigned at the link elements for both the simulation cases of plain mortar and FRCC. The model could properly simulate the single fiber to mechanical behavior of FRCC and the bond performance of rebar in FRCC. The results revealed that discrete fibers are the principal factors that preventing the splitting bond crack propagation and the stress propagation suggests the presence of high local bond stress around the rebar, improving bond ductility.
Graphical abstract Display Omitted
Highlights FRCC model with beam element-based rebar model is used to study the bond performance of deformed rebar in FRCC. Model simulates well the individual fiber level to mechanical behavior of FRCC. The proper bond performance of rebar in FRCC are achieved by using same local bond model of rebar as used in plain mortar. The state-of-the-art internal bond stress mechanism in matrix can well exhibit by the FRCC model.
Bond behavior simulation of deformed rebar in fiber-reinforced cementitious composites using three-dimensional meso-scale model
https://orcid.org/0000-0002-2023-1565
https://orcid.org/0000-0002-9850-026X
https://orcid.org/0000-0003-1767-9702
Abstract Fiber-reinforced cementitious composites (FRCC) can effectively develop the bond ductility of deformed rebar due to the high tensile resistance and strain capacity. This study presents a numerical method to evaluate the bond behavior of deformed rebar in FRCC based on 3D rigid body spring model (3D RBSM). Beam elements are used to model the rebar and the link elements are used to connect beam elements with RBSM elements as matrix. The same local bond-slip relationship for rebar is assigned at the link elements for both the simulation cases of plain mortar and FRCC. The model could properly simulate the single fiber to mechanical behavior of FRCC and the bond performance of rebar in FRCC. The results revealed that discrete fibers are the principal factors that preventing the splitting bond crack propagation and the stress propagation suggests the presence of high local bond stress around the rebar, improving bond ductility.
Graphical abstract Display Omitted
Highlights FRCC model with beam element-based rebar model is used to study the bond performance of deformed rebar in FRCC. Model simulates well the individual fiber level to mechanical behavior of FRCC. The proper bond performance of rebar in FRCC are achieved by using same local bond model of rebar as used in plain mortar. The state-of-the-art internal bond stress mechanism in matrix can well exhibit by the FRCC model.
Bond behavior simulation of deformed rebar in fiber-reinforced cementitious composites using three-dimensional meso-scale model
Sarraz, Atik (Autor:in) / Nakamura, Hikaru (Autor:in) / Kanakubo, Toshiyuki (Autor:in) / Miura, Taito (Autor:in) / Kobayashi, Hiroya (Autor:in)
09.05.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| Elsevier | 2020