contributor author | H. M. Shang | |
contributor author | G. S. Tan | |
contributor author | W. C. M. Tan | |
date accessioned | 2017-05-08T23:20:21Z | |
date available | 2017-05-08T23:20:21Z | |
date copyright | October, 1985 | |
date issued | 1985 | |
identifier issn | 0094-4289 | |
identifier other | JEMTA8-26907#298_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/99910 | |
description abstract | In this investigation, two double-stage forming processes are used to study the effects of prestrain on sheet metal formability. The processes chosen are the bulge test and the plunger test using a die throat to punch diameter ratio of 2.42. It is seen that during the second stage of forming, deformation and shape of the deformed shell are influenced by the level of prestrain and strain gradients on the prestrained workpiece. An improved formability is observed when the workpiece for the plunger test is prestrained by hydroforming, but the formability is reduced when the prestraining process becomes the plunger test. The present results also imply that care should be taken in utilizing the forming limit diagram even if it is constructed from double-stage forming, in which strain gradient on the prestrained workpiece is generally absent. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Effects of Prestrain With Strain Gradient Present on Sheet Metal Formability | |
type | Journal Paper | |
journal volume | 107 | |
journal issue | 4 | |
journal title | Journal of Engineering Materials and Technology | |
identifier doi | 10.1115/1.3225823 | |
journal fristpage | 298 | |
journal lastpage | 306 | |
identifier eissn | 1528-8889 | |
keywords | Sheet metal | |
keywords | Gradients | |
keywords | Shapes | |
keywords | Shells AND Deformation | |
tree | Journal of Engineering Materials and Technology:;1985:;volume( 107 ):;issue: 004 | |
contenttype | Fulltext | |