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Title |
Analysis Study on Ultimate Strength of Single-shear Bolted Connections with Austenitic Stainless Steel(STS201) with Varied End and Edge distances
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Authors |
차은영(Eun-Young Cha) ; 황보경(Bo-Kyung Hwang) ; 이후창(Hoo-Chang Lee) ; 김태수(Tae-Soo Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.5.001 |
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Keywords |
Austenitic stainless steel ; Bolted connection ; Curling ; Strength reduction ; Finite element analysis ; Design specification |
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Abstract |
This study focused on the ultimate behaviors(ultimate strength and fracture mode ) of single shear bolted connection with austenitic sainless steel(STS201) and curling effect on the ultimate strength using finite element analysis based on test results. Main variables are end distance in the parallel direction to loading and edge distance in the perpendicular direction to loading. The validation of finite element analysis procedures was verified through the comparisons of ultimate strength, fracture mode and curling(out-of-plane deformation) occurrence between test results and numerical predictions. Curling was observed in both test and analysis results and it reduced the ultimate strength of single- shear bolted connections with relatively long end distances. Strength reduction ratios caused by curling were estimated quantitatively by maximum 19%, 32%, respectively for specimens with edge distance, 48 mm and 60 mm compared with strengths of uncurled connections with restrained out-of-plane deformation. Finally, analysis strengths were compared with current design strengths and it is found that design block shear equations did not provide the accurate predictions for bolted connections with strength reduction by curling.
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