Developing a Finite Element Model for Thermal Analysis of Friction Stir Welding by Calculating Temperature Dependent Friction Coefficient

2017 ◽  
pp. 107-126 ◽  
Author(s):  
B. Meyghani ◽  
M. Awang ◽  
S. Emamian ◽  
Nor M. Khalid
Keyword(s):  
Thermal Analysis ◽  
Finite Element ◽  
Friction Stir Welding ◽  
Friction Coefficient ◽  
Finite Element Model ◽  
Element Model ◽  
Temperature Dependent ◽  
Friction Stir

scholarly journals Development of a Finite Element Model for Thermal Analysis of Friction Stir Welding (FSW)

2019 ◽  
Vol 495 ◽  
pp. 012101 ◽  
Author(s):  
Bahman Meyghani ◽  
Mokhtar B Awang ◽  
Mohammadsadegh Momeni ◽  
Marina Rynkovskaya
Keyword(s):  
Thermal Analysis ◽  
Finite Element ◽  
Friction Stir Welding ◽  
Finite Element Model ◽  
Element Model ◽  
Friction Stir

Temperature Influence on Microstructure and Properties Evolution of Friction Stir Welded Al-Mg-Si Alloy

2019 ◽  
Vol 822 ◽  
pp. 122-128 ◽  
Author(s):  
Anton Naumov ◽  
Iuliia Morozova ◽  
Fedor Y. Isupov ◽  
Iurii Golubev ◽  
Veselin Mikhailov
Keyword(s):  
Finite Element ◽  
Friction Stir Welding ◽  
Finite Element Model ◽  
Microstructure Evolution ◽  
Element Model ◽  
Temperature Influence ◽  
Nugget Zone ◽  
3D Finite Element ◽  
Friction Stir ◽  
Microhardness Profile

The temperature influence on the microstructure evolution and microhardness of the age-hardenable aluminium alloy 6082 T6 during friction stir welding was defined. In order to achieve this aim, the thermocycles calculated using the developed 3D Finite Element Model were physically simulated on the Gleeble-3800 in the points which located in the different zones of the weld. The microstructure in the chosen points after Gleeble testing was investigated as well as the microhardness was measured. The results were consequently compared with the relevant results obtained after friction stir welding. It was shown that the microstructure and microhardness profile are influenced not only by temperature but by deformation. The increase in hardness in different zones after FSW compared to Gleeble testing can be explained by the grain refinement in the nugget zone as well as the hardening precipitate distribution along the weld which can occur more rapidly due to the deformation influence.

scholarly journals Numerical Simulation of Material Flow and Analysis of Welding Characteristics in Friction Stir Welding Process

Metals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 621 ◽  
Author(s):  
Haitao Luo ◽  
Tingke Wu ◽  
Peng Wang ◽  
Fengqun Zhao ◽  
Haonan Wang ◽  
...  
Keyword(s):  
Finite Element ◽  
Friction Stir Welding ◽  
Finite Element Model ◽  
Material Flow ◽  
Welding Process ◽  
Element Model ◽  
Welding Seam ◽  
Friction Stir ◽  
Tool Pin ◽  
The Finite Element Model

Friction stir welding (FSW) material flow has an important influence on weld formation. The finite element model of the FSW process was established. The axial force and the spindle torque of the welding process were collected through experiments. The feasibility of the finite element model was verified by a data comparison. The temperature field of the welding process was analyzed hierarchically. It was found that the temperature on the advancing side is about 20 °C higher than that on the retreating side near the welding seam, but that the temperature difference between the two sides of the middle and lower layers was decreased. The particle tracking technique was used to study the material flow law in different areas of the weld seam. The results showed that part of the material inside the tool pin was squeezed to the bottom of the workpiece. The material on the upper surface tends to move downward under the influence of the shoulder extrusion, while the material on the lower part moves spirally upward under the influence of the tool pin. The material flow amount of the advancing side is higher than that of the retreating side. The law of material flow reveals the possible causes of the welding defects. It was found that the abnormal flow of materials at a low rotation speed and high welding speed is prone to holes and crack defects. The forming reasons and material flow differences in different regions are studied through the microstructure of the joint cross section. The feasibility of a finite element modeling and simulation analysis is further verified.

scholarly journals A Finite Element Model to Simulate Defect Formation during Friction Stir Welding

Metals ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 256 ◽  
Author(s):  
Zhi Zhu ◽  
Min Wang ◽  
Huijie Zhang ◽  
Xiao Zhang ◽  
Tao Yu ◽  
...  
Keyword(s):  
Finite Element ◽  
Friction Stir Welding ◽  
Finite Element Model ◽  
Defect Formation ◽  
Element Model ◽  
Friction Stir

scholarly journals Prediction of friction stir welding effects on AA2024-T3 plates and stiffened panels using a shell-based finite element model

2017 ◽  
Vol 120 ◽  
pp. 297-306 ◽  
Author(s):  
R.M.F. Paulo ◽  
P. Carlone ◽  
V. Paradiso ◽  
R.A.F. Valente ◽  
F. Teixeira-Dias
Keyword(s):  
Finite Element ◽  
Friction Stir Welding ◽  
Finite Element Model ◽  
Element Model ◽  
Stiffened Panels ◽  
Friction Stir

Thermo-mechanical finite element model of friction stir welding of dissimilar alloys

2014 ◽  
Vol 72 (5-8) ◽  
pp. 607-617 ◽  
Author(s):  
Fadi Al-Badour ◽  
Nesar Merah ◽  
Abdelrahman Shuaib ◽  
Abdelaziz Bazoune
Keyword(s):  
Finite Element ◽  
Friction Stir Welding ◽  
Finite Element Model ◽  
Element Model ◽  
Friction Stir ◽  
Dissimilar Alloys ◽  
Model Of Friction

Finite-element modelling of thermo-mechanical stress distribution in laser beam ceramic tile grout sealing process

2006 ◽  
Vol 220 (10) ◽  
pp. 1497-1508 ◽  
Author(s):  
A Liaqat ◽  
S Safdar ◽  
M A Sheikh
Keyword(s):  
Thermal Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Laser Beam ◽  
Mechanical Stress ◽  
Ceramic Tile ◽  
Element Model ◽  
Ceramic Tiles ◽  
Temperature Dependent ◽  
Heat Effects

Laser tile grout sealing is a special process in which voids between the adjoining ceramic tiles are sealed by a laser beam. This process has been developed by Lawrence and Li using a customized grout material and a high power diode laser (HPDL). The process has been optimally carried out at laser powers of 60–120 W and at scanning speeds of 3–15 mm/s. Modelling of the laser tile grout sealing process is a complex task as it involves a moving laser beam and five different materials: glazed enamel, grout material, ceramic tile, epoxy bedding, and ordinary Portland cement substrate. This article presents the finite element model (FEM) of the laser tile grout sealing process. The main aim of this model is to accurately predict the thermo-mechanical stress distribution induced by the HPDL beam in the process. For an accurate representation of the process, the laser was modelled as a moving heat source. A three-dimensional transient thermal analysis was carried out to determine the temperature distribution. Temperature-dependent material properties and latent heat effects, due to melting and solidification of the glazed enamel, were taken into account in the FEM, thereby allowing a more realistic and accurate thermal analysis. The results of the thermal analysis were used as an input for the stress analysis with temperature-dependent mechanical properties. The results obtained from the FEM are compared with the published experimental results.

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