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|Title:||EFFECTS OF PRESTRAIN WITH STRAIN GRADIENT PRESENT ON SHEET METAL FORMABILITY.|
|Authors:||Shang, H.M. |
|Citation:||Shang, H.M.,Tan, G.S.,Tan, W.C.M. (1985-10). EFFECTS OF PRESTRAIN WITH STRAIN GRADIENT PRESENT ON SHEET METAL FORMABILITY.. Journal of Engineering Materials and Technology, Transactions of the ASME 107 (4) : 298-306. ScholarBank@NUS Repository.|
|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.|
|Source Title:||Journal of Engineering Materials and Technology, Transactions of the ASME|
|Appears in Collections:||Staff Publications|
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