Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stress concentration factors in tubular T/Y-connections reinforced with FRP under in-plane bending load
https://orcid.org/0000-0002-8987-4657
Abstract Stress concentration factors (SCFs) in steel tubular T/Y-connections strengthened with fiber reinforced polymer (FRP) are investigated. In the first step, a finite element (FE) model was developed and verified using data of several available experimental tests and empirical formulas. After that, 134 FE models of T/Y-joints with and without FRP were created and analyzed under in-plane bending (IPB) load. In the FE models, the contact between the FRP layers and the members (chord, brace, and weld) was defined. Results showed that the increase of the FRP layer number leads to the notable decrease of the SCFs. Also, the SCFs of a T/Y-joint reinforced with FRP can be down to 40% of the SCF of the corresponding unreinforced joint. Finally, FE results were used to propose two parametric formulas for determining the SCFs in the T/Y-joints strengthened with FRP subjected to IPB load. The proposed formulas were checked according to the UK Department of Energy acceptance criteria.
Highlights The stress concentration factors (SCFs) in FRP-strengthened CHS T/Y-connections were studied. 134 FE models were generated and analyzed for the parameter study. The effect of the FRP layer number and orientation, the angle between brace and chord, and joint geometry on the SCFs were investigated. Two equations were proposed for determining the SCFs in the T/Y-joints reinforced with FRP under IPB load.
Stress concentration factors in tubular T/Y-connections reinforced with FRP under in-plane bending load
https://orcid.org/0000-0002-8987-4657
Abstract Stress concentration factors (SCFs) in steel tubular T/Y-connections strengthened with fiber reinforced polymer (FRP) are investigated. In the first step, a finite element (FE) model was developed and verified using data of several available experimental tests and empirical formulas. After that, 134 FE models of T/Y-joints with and without FRP were created and analyzed under in-plane bending (IPB) load. In the FE models, the contact between the FRP layers and the members (chord, brace, and weld) was defined. Results showed that the increase of the FRP layer number leads to the notable decrease of the SCFs. Also, the SCFs of a T/Y-joint reinforced with FRP can be down to 40% of the SCF of the corresponding unreinforced joint. Finally, FE results were used to propose two parametric formulas for determining the SCFs in the T/Y-joints strengthened with FRP subjected to IPB load. The proposed formulas were checked according to the UK Department of Energy acceptance criteria.
Highlights The stress concentration factors (SCFs) in FRP-strengthened CHS T/Y-connections were studied. 134 FE models were generated and analyzed for the parameter study. The effect of the FRP layer number and orientation, the angle between brace and chord, and joint geometry on the SCFs were investigated. Two equations were proposed for determining the SCFs in the T/Y-joints reinforced with FRP under IPB load.
Stress concentration factors in tubular T/Y-connections reinforced with FRP under in-plane bending load
https://orcid.org/0000-0002-8987-4657
Abstract Stress concentration factors (SCFs) in steel tubular T/Y-connections strengthened with fiber reinforced polymer (FRP) are investigated. In the first step, a finite element (FE) model was developed and verified using data of several available experimental tests and empirical formulas. After that, 134 FE models of T/Y-joints with and without FRP were created and analyzed under in-plane bending (IPB) load. In the FE models, the contact between the FRP layers and the members (chord, brace, and weld) was defined. Results showed that the increase of the FRP layer number leads to the notable decrease of the SCFs. Also, the SCFs of a T/Y-joint reinforced with FRP can be down to 40% of the SCF of the corresponding unreinforced joint. Finally, FE results were used to propose two parametric formulas for determining the SCFs in the T/Y-joints strengthened with FRP subjected to IPB load. The proposed formulas were checked according to the UK Department of Energy acceptance criteria.
Highlights The stress concentration factors (SCFs) in FRP-strengthened CHS T/Y-connections were studied. 134 FE models were generated and analyzed for the parameter study. The effect of the FRP layer number and orientation, the angle between brace and chord, and joint geometry on the SCFs were investigated. Two equations were proposed for determining the SCFs in the T/Y-joints reinforced with FRP under IPB load.
Stress concentration factors in tubular T/Y-connections reinforced with FRP under in-plane bending load
Nassiraei, Hossein (Autor:in) / Rezadoost, Pooya (Autor:in)
Marine Structures ; 76
06.10.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch