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مقاله جوشكاري Finite element analysis of the thermo-mechanical behavior of the resistance spot welding

مقاله جوشكاري با عنوان : Finite element analysis of the thermo-mechanical behavior of the resistance spot welding

Murat Vural

چكيده:

In this study, the formation of the welding nugget and the effect of welding process parameters on nugget shape and size, have been studied. And a combined thermal-electrical-mechanical simulation system is done using a Finite Element Analysis program, and the effect of the welding parameters such as current, time, electrode force, contact resistance temperature distribution on the contact resistance were investigated. The results provided useful information source on the formation of the nugget, and thus provided opportunities to play first true estimate of the quality of welding process.

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10328

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   11 زمان : 1399:2 


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مقاله جوشكاري Parametric Studies and Finite Element Analysis of Welded Steel in Resistance Spot Welding Process

مقاله جوشكاري با عنوان : Parametric Studies and Finite Element Analysis of Welded Steel in Resistance Spot Welding Process

Kishore, N.1*, Sreenu, S.2, Ramachandran, N.3, Allesu, K.

چكيده :

Resistance Spot Welding (RSW) is a widely used joining process for fabricating sheet assemblies in the automotive,
marine and aerospace industries. Modern vehicles contain 2000-5000 spot welded points. The main requirements of
these automobile parts are corrosion resistance of chassis, the high strength values of sheets used, the stiffness of
welded joints when exposed to an external force and the ability to absorb impacts, along with low غير مجاز مي باشدt and comfort.
In RSW, electrodes travel on a predetermined path and make contact with the sheets at selected weld points to apply
force. Electric current is then turned on and flows through the sheets clamped between the electrodes. Due to the
contact resistance to current flow, the temperature rises from resistance heating. When the temperature reaches the
desired fusing temperature, a molten nugget is formed, the current is shut off after a designated time to allow the
nugget to cool down and solidification of the weld spot occurs under pressure. It is proposed to study the effect of
various parameters on nugget dimensions and strength of the weld joint in RSW and concentrating on different
material and thicknesses to get good weld joint at low غير مجاز مي باشدt and compared with analytical part done in Ansys.

دريافت فايل

10327

برچسب ها دريافت , فايل , مقاله , جوشكاري , مقاومتي , نقطه اي , المان محدود , استاندارد , جزوه , كتاب , تحقيق , نرم افزار , پروژه , پايان نامه , مقاله , هند بوك , گزاش كارآموزي , گزارشكار آزمايشگاه , مقاله ,

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مقاله جوشكاري Finite element analysis of resistance spot welding process

مقاله جوشكاري با عنوان : Finite element analysis of resistance spot welding process

Guo Zhong

چكيده :

A coupled finite element model is developed to
analyze the transient thermal and mechanical behaviors of
Resistance Spot Welding (RSW) process using commercial
software ANSYS. A direct-coupled electrical-thermal Finite
Element Analysis (FEA) is firstly performed to simulate the
transient thermal characteristics of RSW process. The thermal
history of the whole process and the temperature distribution of
the weldment are obtained through the analysis. Then based on
the thermal results a sequential coupled thermo-elastic-plastic
analysis is conducted to determine the mechanical features of
RSW process. The mechanical features, including the
distributions of the contact pressure at both the faying surface
and the electrode-workpiece interface, the stress and strain
distributions in the weldment and their changes during the RSW
process and the deformation of the weldment are also calculated.

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10313

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مقاله جوشكاري Finite element analysis of the thermo-mechanical behavior of the resistance spot welding

دريافت فايل

مقاله جوشكاري Parametric Studies and Finite Element Analysis of Welded Steel in Resistance Spot Welding Process

دريافت فايل

مقاله جوشكاري Finite element analysis of resistance spot welding process