Numerical model for steady-state flow in friction welding

被引：51

作者：

Bendzsak, GJ

North, TH

Li, Z

机构：

[1] Dept. of Metall. and Mat. Science, University of Toronto, Toronto

来源：

ACTA MATERIALIA | 1997年 / 45卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Bond strength (materials) - Heuristic methods - Mathematical models - Navier Stokes equations - Non Newtonian flow - Parameter estimation - Particles (particulate matter) - Welds;

D O I：

10.1016/S1359-6454(96)00280-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The purpose of this paper is to present an approximate mathematical model for the study of non-Newtonian flow regimes within friction welds. It is shown that the complex flows of the steady-state stage during friction welding can be described by a numerical solution of the Navier-Stokes equations. The results obtained predict many features observed in the micrographs of experimental samples. Three main findings are discussed in the paper. The first relates to a heuristic method which can be used for the estimations of the parameters of a non-Newtonian viscosity model required for the analysis. The second concerns the retention of particles, and of the flow itself, within the weld zone. The third suggests a theoretical framework which may permit the evaluation of joint strength from first principles. (C) 1997 Acta Metallurgica Inc.

引用

页码：1735 / 1745

页数：11