Open AccessJournal Article
Modeling of resistance spot weld nugget growth
TLDR
In this paper, the weld nugget in resistance spot welding of Type 347 stainless steel was found, using finite element methods, to initiate in a ring shape at a distance from the electrode center.Abstract:
The weld nugget in resistance spot welding of Type 347 stainless steel was found, using f inite element methods, to initiate in a ring shape at a distance from the electrode center. The ring-like weld nugget expands inward and outward during the welding cycles. The welding current, electrode pressure and hold time affected the thermomechanical interactions of the welding process and changed the f inal nugget geometry. Also, when spot welding workpieces of unequal thicknesses, it was found that the weld nugget formed mostly in the thicker workpiece than in the thinner workpiece, and when spot welding dissimilar materials, the weld nugget formed more in the workpiece of lower thermal conductivity or higher electrical resistivity.read more
Citations
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Patent
Resistance projection welding system and method for welding a projection weld nut to a workpiece
TL;DR: In this article, a system and method for monitoring and controlling a resistance projection welder for welding a projection weld nut to a workpiece is described, where a displacement sensor measures the displacement of a welding electrode of a weld gun in real time during the welding procedure.
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A study on characteristics of end plug resistance welding process in nuclear fuel rods by experiment and numerical simulation
TL;DR: In this paper, a coupled axisymmetric finite element model (FEM) was formulated to simulate the resistance upset butt welding process between the end plug and cladding tube by a numerical simulation.
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Investigating Mechanical Properties of Small Scale Resistance Spot Welding of a Nickel Based Superalloy through Statistical DOE
M. Atashparva,Mohsen Hamedi +1 more
TL;DR: In this paper, a new equation is provided to calculate the electrical contact resistance that does not require the number of contact points, the size, shape and distribution of them, and the relationship between mechanical properties and weld nugget dimensions and process parameters.
Journal Article
Resistance Spot Welding of Aluminum Alloy to Steel with Transition Material - Part II: Finite Element Analyses of Nugget Growth
Xin Sun,Mohammad A. Khaleel +1 more
TL;DR: In this paper, a finite element modeling of nugget growth for resistance spot welding of aluminum alloy to steel is presented, where a cold-rolled clad material is introduced as a transition to aid the resistance welding process.
Journal ArticleDOI
Recent Advances and Improvements in the Simulation of Resistance Welding Processes
TL;DR: In this article, two new functions are presented for automated optimisation of welding current in spot welding, one function is for automated simulations in a specified range of welding currents from a low limit to a high limit with a user-defined increment.
References
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Book
Modern Welding Technology
TL;DR: In this paper, CARY this paper discusses the development of WELDING TECHNOLOGY in the last five years and discusses the 6th edition of his book, Modern WELDing Technology 6TH EDITION 6.
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Electrical conduction in solids II. Theory of temperature-dependent conductors
TL;DR: In this paper, a new mathematical treatment of the general problem of electrical heating of conductors has been developed, which gives, under appropriate conditions, a concise derivation of all the main results of the accepted theory; in addition it leads to three new conclusions.
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Electrical conduction in solids I. Influence of the passage of current on the contact between solids
TL;DR: The effect of passing an electric current through the interface between two contacting pieces of gold has been investigated, and it has been shown that the current can cause appreciable changes in the true area of contact between the surfaces as discussed by the authors.
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Interface separation for an elastic layer loaded by a rigid stamp
TL;DR: In this paper, the frictionless contact problem for an infinite elastic layer lying on a horizontal rigid plane is considered, where the external load is applied to the layer through a rigid stamp.