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contributor authorO. M. Ettouney
contributor authorK. A. Stelson
date accessioned2017-05-08T23:33:03Z
date available2017-05-08T23:33:03Z
date copyrightAugust, 1990
date issued1990
identifier issn1087-1357
identifier otherJMSEFK-27744#260_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/107162
description abstractIn 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.
publisherThe American Society of Mechanical Engineers (ASME)
titleAn Approximate Model to Calculate Foldover and Strains During Cold Upsetting of Cylinders Part I: Formulation and Evaluation of the Foldover Model
typeJournal Paper
journal volume112
journal issue3
journal titleJournal of Manufacturing Science and Engineering
identifier doi10.1115/1.2899584
journal fristpage260
journal lastpage266
identifier eissn1528-8935
keywordsCylinders
keywordsFriction
keywordsFinite element analysis
keywordsCalibration
keywordsCompression
keywordsLubrication
keywordsEquations AND Geometry
treeJournal of Manufacturing Science and Engineering:;1990:;volume( 112 ):;issue: 003
contenttypeFulltext


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