contributor author | O. M. Ettouney | |
contributor author | K. A. Stelson | |
date accessioned | 2017-05-08T23:33:03Z | |
date available | 2017-05-08T23:33:03Z | |
date copyright | August, 1990 | |
date issued | 1990 | |
identifier issn | 1087-1357 | |
identifier other | JMSEFK-27744#260_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/107162 | |
description abstract | In this paper, a new approximate model to calculate foldover of a cylinder undergoing nonuniform compression test (simple upsetting) is presented. The model is formulated using constant-volume equations and workpiece geometry. In addition to foldover, the model can be used to calculate equatorial-axial strains. This eliminates the need for inscribing grids (when determining forming-limit diagrams) on the cylinder’s free surface to find these strains. Combined with friction-calibration curves (prepared using finite-element analysis) that relate foldover to friction, the model enables one to estimate the friction coefficient. This eliminates the need for a separate test (e.g., the ring test) to determine friction or evaluate type of lubrication to be used. When compared to finite-element results and experiments, the new model showed excellent results in calculating foldover, strains, and friction coefficient. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | An Approximate Model to Calculate Foldover and Strains During Cold Upsetting of Cylinders Part I: Formulation and Evaluation of the Foldover Model | |
type | Journal Paper | |
journal volume | 112 | |
journal issue | 3 | |
journal title | Journal of Manufacturing Science and Engineering | |
identifier doi | 10.1115/1.2899584 | |
journal fristpage | 260 | |
journal lastpage | 266 | |
identifier eissn | 1528-8935 | |
keywords | Cylinders | |
keywords | Friction | |
keywords | Finite element analysis | |
keywords | Calibration | |
keywords | Compression | |
keywords | Lubrication | |
keywords | Equations AND Geometry | |
tree | Journal of Manufacturing Science and Engineering:;1990:;volume( 112 ):;issue: 003 | |
contenttype | Fulltext | |