The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	A finite element thermal and diffusion analysis at bearing metal interface in extrusion processes
Author:	Dennis, Biju
View Online:	njit-etd1992-067 ([7], 80 pages ~ 1.5 MB pdf)
Department:	Department of Mechanical and Industrial Engineering
Degree:	Master of Science
Program:	Mechanical Engineering
Document Type:	Thesis
Advisory Committee:	Levy, Nouri (Committee chair) Geskin, E. S. (Committee member) Kotefski, Steve (Committee member)
Date:	1992-01
Keywords:	Extrusion -- Plastics -- Mathematical models Finite element method Mechanical wear
Availability:	Unrestricted
Abstract:	A mathematical model is developed to study the effect of extrusion speed and the bearing length on the surface temperature along the die billet interface. The surface temperature distribution resulting from the plastic work done on the die billet interface is studied. Finite element analysis is done on the model incorporating the mass transport effect occurring during the extrusion process and the interdependence of various parameters are presented. Die wearing problem is analyzed considering the effect of diffusion. Thermal analogy of the diffusion problem is utilized in the development of the mathematical model for diffusion problem and finite element analysis is done on the model to study the effect of controlling parameters in the extrusion process.