Analysis of Temperature and Plastic Flow during Friction Stir Spot Welding Using Particle Method

Hirasawa, Shigeki; Badarinarayan, H.; Okamoto, K.; Tomimura, Toshio; Kawanami, Tsuyoshi; Hirano, Shigeki

doi:10.1299/jtst.4.260

Cited by 6 publications

(3 citation statements)

References 9 publications

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“…Zahedul et al (2006) analyzed the residual thermal stresses in welded metals. The present authors (Hirasawa et al, 2005(Hirasawa et al, , 2009 analyzed the temperature distribution by the finite element method, and also analyzed the plastic flow of material by the particle method during friction stir welding process. The particle method is preferable to analyze large plastic deformation behavior with very high strain rates.…”

Section: Introductionmentioning

confidence: 99%

Analysis of effect of tool geometry on plastic flow during friction stir spot welding using particle method

Hirasawa

Badarinarayan

Okamoto

et al. 2010

Journal of Materials Processing Technology

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119

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a b s t r a c tThe effect of tool geometry on the plastic flow and material mixing during friction stir spot welding (FSSW) is investigated using the particle method approach. For spot welds made with a cylindrical pin tool with flat shoulder, the model predicts the material flow at the pin periphery to be in the upward direction and the material is pushed downward beneath the shoulder giving rise to the resultant hook geometry. Other pin geometries evaluated include tapered pin, inverse tapered pin, triangular pin, convex shoulder, and concave shoulder. With good correlation with experimental trials, this model is then used to predict the material flow for spot welds. The material flow, and thereby the resultant hook formation, is quantified using numerical methods and is expressed as standard deviation of the particle movement. A triangular pin with a concave shoulder is the preferred tool geometry from the current study that results in high strength spot welds.

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Section: Introductionmentioning

confidence: 99%

Analysis of effect of tool geometry on plastic flow during friction stir spot welding using particle method

Hirasawa

Badarinarayan

Okamoto

et al. 2010

Journal of Materials Processing Technology

Self Cite

119

View full text Add to dashboard Cite

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“…This heat mainly influenced by two actions, i.e. friction between rotating tool and workpiece, and severe plastic deformation of the workpiece (Hirasawa et al, 2010). Thus, the materials adjacent to the tool are heated, softened, and mixed in the stirring stage where a solid-state joining will be formed (Mishraa et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Optimization of Process Parameters on Tensile Shear Load of Friction Stir Spot Welded Aluminum Alloy (Aa5052-H112)

Armansyah

Chie

2018

Sinergi

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Optimization of the process was still the issue in manufacturing. Investigation on the process parameters that effects to the property of welded structure were necessary. In this study, the AA5052-H32 sheets of 2 mm thick were welded using friction stir spot welding (FSSW) and tested via tensile shear load test to investigate the influence of spindle speed, tool depth, and dwell time to the tensile shear load of the joints. The result shows that in every set of parameter combination, exhibit interesting influence to the tensile shear load. The effect of spindle speed of 1000 rpm shown the good property in average 18.33 KN especially at tool depth of 3.5 mm. Furthermore, the effect of tool depth brought significant effect to the tensile shear load especially at 3.5 mm for each set of spindle speed and dwell time. The set of dwell time to parameter combination had no significant effect to the tensile shear load. The good tensile shear load could be achieved in the range of 17.7-19.3 KN at 3.5 mm of plunge depth and 1000 rpm of spindle speed, where the best one was 19.3 KN at 7s of dwell time.

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“…Dongun Kim [5] performed thermo-mechanical simulations of the FSSW process to understand the effect of pin geometry on weld strength and material flow, utilizing Lagrangian and Eulerian formulations, respectively. Hirasawa S. [6] analyzed temperature distribution and plastic deformation flow during the FSSW process with the fluid flow model and the elastic-plastic deformation model using the particle method.…”

Section: Introductionmentioning

confidence: 99%

Numerical Characteristics of Friction Stir Spot Welds

Yang¹,

Yang²,

Zhao³

2015

Proceedings of the 4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering 2015

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As a solid state joining process, friction stir spot welding (FSSW) has a strong potential to be applied in the aerospace and automotive industries. Mechanical property of the FSSW joint takes important influence on connection performance. In the present paper, numerical simulation model of mechanical property of the friction stir spot welds is established, based on the study of the microstructure of the joint. Stress distribution and deformation under tensile shear loads was obtained, and the failure mechanism is investigated. Research results can provide guidance for welding quality improvement of the FSSW joints.

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Analysis of Temperature and Plastic Flow during Friction Stir Spot Welding Using Particle Method

Cited by 6 publications

References 9 publications

Analysis of effect of tool geometry on plastic flow during friction stir spot welding using particle method

Analysis of effect of tool geometry on plastic flow during friction stir spot welding using particle method

Optimization of Process Parameters on Tensile Shear Load of Friction Stir Spot Welded Aluminum Alloy (Aa5052-H112)

Numerical Characteristics of Friction Stir Spot Welds

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