Parametric Study and Fatigue Life Evaluation Using Effective Notch Stress Approach for Rib-to-Deck Welded Joints in Orthotropic Steel Decks

2021 ◽  
Vol 35 (3) ◽  
Author(s):  
Bao-ya Cao ◽  
You-liang Ding ◽  
Fang-fang Geng ◽  
Ai-qun Li
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
Parametric Study ◽  
Life Evaluation ◽  
Notch Stress ◽  
Effective Notch Stress ◽  
Fatigue Life Evaluation ◽  
Orthotropic Steel Decks

scholarly journals Generalized SCF Formula of Out-Of-Plane Gusset Welded Joints and Assessment of Fatigue Life Extension by Additional Weld

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1249
Author(s):  
Yixun Wang ◽  
Yuxiao Luo ◽  
Yuki Kotani ◽  
Seiichiro Tsutsumi
Keyword(s):  
Fatigue Life ◽  
Fatigue Resistance ◽  
Welded Joints ◽  
Life Extension ◽  
Leg Length ◽  
Notch Stress ◽  
Out Of Plane ◽  
Weld Toe ◽  
Effective Notch Stress ◽  
Geometric Effects

The existing S-N curves by effective notch stress to assess the fatigue life of gusset welded joints can result in reduced accuracy due to the oversimplification of bead geometries. The present work proposes the parametric formulae of stress concentration factor (SCF) for as-welded gusset joints based on the spline model, by which the effective notch stress can be accurately calculated for fatigue resistance assessment. The spline model is also modified to make it applicable to the additional weld. The fatigue resistance of as-welded and additional-welded specimens is assessed considering the geometric effects and weld profiles. The results show that the error of SCFs by the proposed formulae is proven to be smaller than 5%. The additional weld can increase the fatigue life by as great as 9.4 times, mainly because the increasing weld toe radius and weld leg length lead to the smaller SCF. The proposed series of S-N curves, considering different SCFs, can be used to assess the welded joints with various geometric parameters and weld profiles.

Fatigue Life Analysis of T-Type Fillet Welded Joints Using an Effective Notch Stress Method

2020 ◽  
Vol 37 (8) ◽  
pp. 601-606
Author(s):  
Minhyeok Heo ◽  
Changwan Han ◽  
Hanjong Kim ◽  
Seung-bin Jung ◽  
Seonghun Park
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
Notch Stress ◽  
Effective Notch Stress ◽  
Life Analysis ◽  
Fatigue Life Analysis
Sign in / Sign up

Export Citation Format

Share Document