Modeling the Temperature Distribution in the Contact Area of a Moving Object in the Case of Linear Friction Welding

Abstract

This paper describes the results of the mathematical and computer modeling efforts of heat generation in the contact area of a moving object on an infinite plane with friction. The distribution of contact pressure with a linear approximation was obtained. The heat equations for a nonlinear volume heat source were solved. It is shown, that at the initial stages of the linear friction welding (LFW) process temperature distribution is non-elliptical with two hot spots appearing near the edges of the moving specimen. Then as the process progresses these two spots expand and move to the center of the specimen. The results of the mathematical and the numerical modeling in ANSYS APDL software are in good quantitative agreement.

On the visualization of joint form ation during linear friction welding

“…Schroder and others suggested that this is probably because of the higher temperatures developing there at the early stages of the process [7]. The same results were reached in our previous papers using mathematic modelling for a 2D case [17,18]. As we can see from Fig.1 this hypothesis is fully confirmed.…”

Effect of Process Parameters on Friction Model in Computer Simulation of Linear Friction Welding

“…Some variants of friction coefficient functions in LFW have been considered for this. The LFW elastic stage model [6,7] was used, where the elastic stage is sufficient for the qualitative and quantitative assessment in the first approximation, because elastic deformations follows the classical law of dry friction, and the contribution of the friction coefficient in the modelling results is significant. For plastic deformations the adhesion component of friction will be in turn significant.…”