Materials | |
Numerical Analysis of Axial Cyclic Behavior of FRP Retrofitted CHS Joints | |
Maria Rashidi1  Mohammad Alembagheri1  Bijan Samali1  Amin Yazdi2  | |
[1] Centre for Infrastructure Engineering, School of Engineering, Western Sydney University, Penrith 2749, Australia;Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran 11154585, Iran; | |
关键词: tubular T-joints; ultimate strength; cyclic loading; welding; FRP strengthening; buckling; | |
DOI : 10.3390/ma14030648 | |
来源: DOAJ |
【 摘 要 】
This paper aims to numerically investigate the cyclic behavior of retrofitted and non-retrofitted circular hollow section (CHS) T-joints under axial loading. Different joints with varying ratios of brace to chord radius are studied. The effects of welding process on buckling instability of the joints in compression and the plastic failure in tension are considered. The finite element method is employed for numerical analysis, and the SAC protocol is considered as cyclic loading scheme. The CHS joints are retrofitted with different numbers of Fiber Reinforced Polymer (FRP) layers with varying orientation. The results show that the welding process significantly increases the plastic failure potential. The chord ovalization is the dominant common buckling mode under the compression load. However, it is possible to increase the energy dissipation of the joints by utilizing FRP composite through changing the buckling mode to the brace overall buckling.
【 授权许可】
Unknown