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<strong>Investigation of the effective parameters on welding residual stress in GTAW of aluminum cylindrical shell</strong>

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Title Statement <strong>Investigation of the effective parameters on welding residual stress in GTAW of aluminum cylindrical shell</strong>
 
Added Entry - Uncontrolled Name Dehkordi, Yousef Ghaderi; Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran 16758 136, Iran
Anaraki, Ali Pourkamali; Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran 16758 136, Iran
Shahani, Amir Reza; Faculty of Mechanical Engineering , K.N. Toosi University of Technology, Tehran 16765 3381, Iran
 
Uncontrolled Index Term Welding residual stress, Finite element, Experimental design, Taguchi, Aluminum, Cylindrical shell
 
Summary, etc. The present work aims to study the influence of different geometrical, technological, and material parameters on residualstress in tungsten inert gas butt-welded aluminum cylinder. In order to present a simple analytical model to estimate thewelding residual stress, the Taguchi L18 array has been employed with one 6-level factor and four 3-level factors. A 3Dcoupled thermo-mechanical finite element model considering temperature-dependent material properties has been developedto determine the welding residual stress in all experiments. The numerical model has been validated using the hole-drillingmethod. Using statistical analysis, the order of factors based on their effect on residual stress has been determined as yieldstrength, length, thickness, heat input, and finally diameter. The residual stress increases with an increase in yield strength,diameter, and heat input, while decreases with an increase in thickness. Contribution of each parameter on residual stress hasbeen specified using variance analysis; yield strength with 99.6% contribution is the most significant factor, while diameterhas insignificant impact. Finally, high accuracy equations have been proposed to calculate the welding residual stress.
 
Publication, Distribution, Etc. Indian Journal of Engineering and Materials Sciences (IJEMS)
2021-02-02 15:29:42
 
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http://op.niscair.res.in/index.php/IJEMS/article/view/45874
 
Data Source Entry Indian Journal of Engineering and Materials Sciences (IJEMS); ##issue.vol## 27, ##issue.no## 1 (2020): IJEMS- February 2020
 
Language Note en
 
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