A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Residual shearing strength of fillet weld connections after exposure to elevated temperature
Abstract Experimental and analytical studies are carried out to investigate the residual shearing strength of fillet welded connections after exposure to elevated temperatures. Transverse fillet welds and longitudinal fillet welds were designed in the test, and four weld leg heights were considered. Fourteen specimens were manufactured for each weld leg height, including seven heating temperatures and two cooling methods, obtaining a total of 112 specimens, along with 8 unheated specimens for comparison. The load-displacement curves and stress-load ratio curves were obtained to evaluate the shearing strength, residual deformation, stress development, stiffness and ductility of the fillet welds. Test results exhibit the transverse fillet welds are mainly integral fracture, while longitudinal fillet welds occur obvious local and global cracks. The weld leg height has the greatest influence on the shearing resistance of fillet welds, followed by the elevated temperature and cooling method. When the heating temperature is between 400 °C-600 °C, an increasement in residual shearing strength can be noticed. Meanwhile, the residual deformation is positively correlated with the weld leg height. Additionally, water-cooling fillet welds are superior to room-temperature-cooled fillet welds in terms of stiffness and ductility. Moreover, the formulae for predicting the residual shearing strength of the fillet welds after exposure to elevated temperatures are proposed.
Graphical abstract Display Omitted
Highlights The transverse fillet weld and longitudinal fillet welds exhibit different failure modes under axial shearing test. The shearing strength and ductility of the longitudinal fillet welds are higher than those of transverse fillet welds. Water-cooling fillet welds are superior to room-temperature-cooled fillet welds in terms of stiffness and ductility. The formulae were designed to estimate the shearing strength of the fillet welds to elevated temperatures.
Residual shearing strength of fillet weld connections after exposure to elevated temperature
Abstract Experimental and analytical studies are carried out to investigate the residual shearing strength of fillet welded connections after exposure to elevated temperatures. Transverse fillet welds and longitudinal fillet welds were designed in the test, and four weld leg heights were considered. Fourteen specimens were manufactured for each weld leg height, including seven heating temperatures and two cooling methods, obtaining a total of 112 specimens, along with 8 unheated specimens for comparison. The load-displacement curves and stress-load ratio curves were obtained to evaluate the shearing strength, residual deformation, stress development, stiffness and ductility of the fillet welds. Test results exhibit the transverse fillet welds are mainly integral fracture, while longitudinal fillet welds occur obvious local and global cracks. The weld leg height has the greatest influence on the shearing resistance of fillet welds, followed by the elevated temperature and cooling method. When the heating temperature is between 400 °C-600 °C, an increasement in residual shearing strength can be noticed. Meanwhile, the residual deformation is positively correlated with the weld leg height. Additionally, water-cooling fillet welds are superior to room-temperature-cooled fillet welds in terms of stiffness and ductility. Moreover, the formulae for predicting the residual shearing strength of the fillet welds after exposure to elevated temperatures are proposed.
Graphical abstract Display Omitted
Highlights The transverse fillet weld and longitudinal fillet welds exhibit different failure modes under axial shearing test. The shearing strength and ductility of the longitudinal fillet welds are higher than those of transverse fillet welds. Water-cooling fillet welds are superior to room-temperature-cooled fillet welds in terms of stiffness and ductility. The formulae were designed to estimate the shearing strength of the fillet welds to elevated temperatures.
Residual shearing strength of fillet weld connections after exposure to elevated temperature
Chen, Yang-Yi (author) / Chen, Yu (author)
2021-11-09
Article (Journal)
Electronic Resource
English
The static strength of end and T fillet weld connections
| British Library Online Contents | 1999
Low cycle fatigue strength assessment of butt and fillet weld connections
| British Library Conference Proceedings | 2002
Fillet Weld Design for Rectangular HSS Connections
| Online Contents | 2011
Low cycle fatigue strength assessment of butt and fillet weld connections
| Online Contents | 2004