Author(s)

A.S. Wood, G.F. Rosala, A.J. Day, I. Torsun & N. Dib

Abstract

Variable grid model for thermo-elastic deformation A.S. Wood, G.F. Rosala, A.J. Day, I. Torsun & N. Dib University of Bradford, West Yorkshire, ABSTRACT A preliminary variable space grid formulation is described for a thermally loaded and deforming elastic body undergoing a change of phase. The model is numerically simulated using finite difference techniques and some results are compared with measured data. INTRODUCTION Electro-fusion welding (EFW) is a process for joining lengths of plastic pipe, typically used for the transmission of gas or water. Essentially the procedure involves first inserting two pipe ends to be joined into a electro-fusion fitting containing an embedded heating coil. An interference fit between pipes and fitting is not expected and so, at least initially, an air gap will be present. A current is then passed through the coil, the temperature of which increases due to Joule heating. The surrounding plastic material of the pipes and fitting subseque

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