Friction model for friction stir welding process simulation: Calibrations from welding experiments

Assidi, Mohamed; Fourment, Lionel; Guerdoux, Simon; Nelson, Tracy W.

doi:10.1016/j.ijmachtools.2009.11.008

Cited by 219 publications

(110 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Based on error estimation, the ALE method and an adaptive re-meshing structure as a splitting approach [113] was employed for predicting the distribution of the temperature using a constant friction coefficient value.…”

Section: Local Scalementioning

confidence: 99%

A Comparison of Different Finite Element Methods in the Thermal Analysis of Friction Stir Welding (FSW)

Meyghani

Awang

Emamian

et al. 2017

Metals

View full text Add to dashboard Cite

Friction Stir Welding (FSW) is a novel kind of welding for joining metals that are impossible or difficult to weld by conventional methods. Three-dimensional nature of FSW makes the experimental investigation more complex. Moreover, experimental observations are often costly and time consuming, and usually there is an inaccuracy in measuring the data during experimental tests. Thus, Finite Element Methods (FEMs) has been employed to overcome the complexity, to increase the accuracy and also to reduce costs. It should be noted that, due to the presence of large deformations of the material during FSW, strong distortions of mesh might be happened in the numerical simulation. Therefore, one of the most significant considerations during the process simulation is the selection of the best numerical approach. It must be mentioned that; the numerical approach selection determines the relationship between the finite grid (mesh) and deforming continuum of computing zones. Also, numerical approach determines the ability of the model to overcome large distortions of mesh and provides an accurate resolution of boundaries and interfaces. There are different descriptions for the algorithms of continuum mechanics include Lagrangian and Eulerian. Moreover, by combining the above-mentioned methods, an Arbitrary Lagrangian-Eulerian (ALE) approach is proposed. In this paper, a comparison between different numerical approaches for thermal analysis of FSW at both local and global scales is reviewed and the applications of each method in the FSW process is discussed in detail. Observations showed that, Lagrangian method is usually used for modelling thermal behavior in the whole structure area, while Eulerian approach is seldom employed for modelling of the thermal behavior, and it is usually employed for modelling the material flow. Additionally, for modelling of the heat affected zone, ALE approach is found to be as an appropriate approach. Finally, several significant challenges and subjects remain to be addressed about FSW thermal analysis and opportunities for the future work are proposed.

show abstract

Section: Local Scalementioning

confidence: 99%

A Comparison of Different Finite Element Methods in the Thermal Analysis of Friction Stir Welding (FSW)

Meyghani

Awang

Emamian

et al. 2017

Metals

View full text Add to dashboard Cite

show abstract

“…The heat source distributed over the contact surface of the tool is modelled as a heat flux loading the surface of the upper sheet. The analysis of normal stresses and temperature distributions for varying welding parameters (welding speed, rotational speed) were shown in [18,19]. The mechanical models are used for the analysis of the structures made using RFSSW.…”

Section: Deformacja Plastyczna Wybranych Połączeń Rfssw Podczas Rozcimentioning

confidence: 99%

The Plastic Deformation of RFSSW Joints During Tensile Tests / Deformacja Plastyczna Wybranych Połączeń RFSSW Podczas Rozciągania

Lacki¹,

Derlatka²

2015

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

The dynamic development of the friction stir welding (FSW) technology is the basis for the design of durabe joints inter alia in the aviation industry. This technology has a prospective application, especially for the aluminum alloys. It is suitable for a broad spectrum of permanent joints. The joints obtained by FSW technology are characterized by good mechanical properties. In this paper, the friction stir spot welding joints were analysed. The example of a structure made using this technology were presented. The lap joints made of 2mm Al 6061-T6 sheets were the investigation subject. The different spot welds arrangements were analysed. The tensile test were performed with optical deformation measurement system, which allow to obtain the plastic deformation field on the sample surface. The plastic strain graphs for the characteristic line passing through the maximum deformation were registered and presented. The experimental results were compared to the FEM numerical analysis. The numerical models were built with 3D-solid elements. The boundary conditions, material properties and geometry of the joints were identical as during experimental investigation. The mechanism of deformation of welded joints during tensile test was described and explained. It has been found that the arrangement of the spot welds with respect to the tensile direction has an important influence on the behaviour and deformation of lap joint.

show abstract

“…The study of the different process conditions shows that the main phenomena taking place during FSW can be simulated with the right sensitivities. Based on further analysis presented in [13], a valid model to determine the strength and temperature of the tool were constructed.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of aluminium lap joints made by RFSSW

Lacki

Derlatka

2015

Meccanica

View full text Add to dashboard Cite

Friction stir welding is one of the newest methods of metal welding. The method is constantly being developed and friction stir spot welding (FSSW) is one of its varieties. The method is mainly used in the aircraft, automotive and shipbuilding industries. During the process, heat is generated as a result of friction between the tool and materials as well as plastic deformation of the joined materials. The paper presents a numerical analysis of welded structures made of 6061-T6 aluminium alloy. The specimens were joined by refill FSSW. This method joins metals in a solid state. The numerical calculations were performed using the ADINA System based on the finite element method. The sheets were modelled with shell elements and the joints were modelled with 3D-solid elements. The experimental investigations were carried out using a non-contact system allowing for measuring displacements and strains in real time. The numerical results were compared with the test ones. The structures were assessed regarding strength and the possibility of their application in the aircraft industry.Keywords Finite element method Á Aluminium 6061-T6 Á Refill friction stir spot welding (RFSSW)

show abstract

Friction model for friction stir welding process simulation: Calibrations from welding experiments

Cited by 219 publications

References 21 publications

A Comparison of Different Finite Element Methods in the Thermal Analysis of Friction Stir Welding (FSW)

A Comparison of Different Finite Element Methods in the Thermal Analysis of Friction Stir Welding (FSW)

The Plastic Deformation of RFSSW Joints During Tensile Tests / Deformacja Plastyczna Wybranych Połączeń RFSSW Podczas Rozciągania

Experimental and numerical investigation of aluminium lap joints made by RFSSW

Contact Info

Product

Resources

About