Fabrication of Gas Metal Arc Welding Based Wire Plus Arc Additive Manufactured 347 Stainless Steel Structure: Behavioral Analysis Through Experimentation and Finite Element Method

2021 ◽  
Author(s):  
R. Pramod ◽  
S. Mohan Kumar ◽  
A. Rajesh Kannan ◽  
N. Siva Shanmugam ◽  
Reza Tangestani
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stainless Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Steel Structure ◽  
Behavioral Analysis ◽  
Metal Arc Welding ◽  
Element Method

scholarly journals Finite Element Modeling and Experimental Validation of Microstructural Changes and Hardness Variation During Gas Metal Arc Welding of Aisi 441 Ferritic Stainless Steel

2021 ◽  
Author(s):  
SERAFINO CARUSO ◽  
STANO IMBROGNO
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Grain Growth ◽  
Ferritic Stainless Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
User Subroutine ◽  
Hardness Variation ◽  
Metal Arc Welding ◽  
Welding Processes

Abstract Grain growth and hardness variation occurring in high temperature Heat Affected Zone (HAZ) during the welding processes are two thermal dependant aspects of great interest for both academic and industrial research activities. This paper presents an innovative Finite Element (FE) model capable to describe the grain growth and the hardness decrease that occur during the Gas Metal Arc Welding (GMAW) of commercial AISI 441 steel. The commercial FE software SFTC DEFORM-3DTM was used to simulate the GMAW process and a user subroutine was developed including a physical based model and the Hall-Petch (H-P) equation to predict grain size variation and hardness change. The model was validated by comparison with the experimental results showing its reliability in predicting important welding characteristics temperature dependant. The study provides an accurate numerical model (i.e. user subroutine, heat source fitting, geometry,…) able to successfully predict the thermal phenomena (i.e. coarsening of the grains and hardening decrease) that occur in the HAZ during welding process of ferritic stainless steel.

scholarly journals Comparative Evaluation of the Force and Load Deflection Rate for Different Loop Springs with Varying Designs, Wire Dimensions, and Materials: A Finite Element Method Study

2019 ◽  
Vol 53 (3) ◽  
pp. 189-196
Author(s):  
Bhagyashree S. Jadhav ◽  
Ravindranath V. Krishnan ◽  
Vivek J. Patni ◽  
Girish R. Karandikar ◽  
Anita G. Karandikar ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stainless Steel ◽  
Anterior Segment ◽  
Computer Assisted ◽  
The Finite Element Method ◽  
Computer Assisted Design ◽  
Beta Titanium ◽  
Deflection Rate ◽  
Element Method

Objective: To evaluate and compare the force and load deflection rate generated by differing unit displacement through 1 to 4 mm of springs that vary in design (Double Delta Closing Loop, Double Vertical T Crossed Closing Loop, Double Vertical Helical Closing Loop and Ricketts Maxillary Retractor), constituting wire materials (stainless steel and beta titanium), and wire dimensions (0.017" × 0.025" and 0.019" × 0.025"). Materials and methods: Computer-assisted design (CAD) model of the said loop springs was created and converted to the finite element method (FEM). The boundary conditions assigned were restraining anterior segment of the loops in all the 3 axes and displacement of the posterior segment progressively only along the x-axis in increments of 1, 2, 3, and 4 mm. Force and load deflection rate were calculated for each incremental displacement. Results: For all loop designs, force and load deflection rate increased with incremental displacement. Loop springs of beta titanium and 0.017" × 0.025" dimension showed lesser force and load deflection rate than those of stainless steel and 0.019" × 0.025", respectively. Ricketts Maxillary Retractor showed the least force and load deflection rate. Comparable force and load deflection values were found for 0.017" × 0.025" Double Vertical T Crossed Loop and 0.019" × 0.025" Double Vertical Helical Closing Loop. Conclusions: Variations in wire dimensions, materials, and designs have a profound effect on force and load deflection rate of the different loop springs studied.

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