Experimental study of formability of sheet metal in deep drawing process

One of the most common outcomes in deep drawing process is a cup fractures that occur at the bottom of the cup shell. This cup fracture is cause by many parameters like blank holder force (BHF), blank diameter, friction between punch and blank, normal anisotropy of material, blank thickness and many...

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Main Author:	Muhammad Safwan, Ismail
Format:	Undergraduates Project Papers
Language:	English
Published:	2011
Subjects:	TS Manufactures
Online Access:	http://umpir.ump.edu.my/id/eprint/2885/ http://umpir.ump.edu.my/id/eprint/2885/ http://umpir.ump.edu.my/id/eprint/2885/1/CD5912.pdf

id	ump-2885
recordtype	eprints
spelling	ump-28852015-03-03T07:58:27Z http://umpir.ump.edu.my/id/eprint/2885/ Experimental study of formability of sheet metal in deep drawing process Muhammad Safwan, Ismail TS Manufactures One of the most common outcomes in deep drawing process is a cup fractures that occur at the bottom of the cup shell. This cup fracture is cause by many parameters like blank holder force (BHF), blank diameter, friction between punch and blank, normal anisotropy of material, blank thickness and many more. The main objectives of the present study is to find the value of limiting drawing ratio (LDR) in LDR test and to predict the forming limit behaviour of sheet metal in deep drawing by construct a forming limit diagram (FLD) in FLD test for both aluminium AA1100 and copper. To determine the drawability of aluminium AA1100 and copper, LDR test with variable of blank diameters (80mm, 85mm, 90mm, 95mm and 100mm) and two set of BHF (with spring constant is 16.3 N/mm and 10 N/mm ) was utilized. On the other hand, the parameters that have used in FLD test is variable of blank thickness (1mm and 0.6mm) and surface condition of a blank using aluminium AA1100 as a constant material. In surface condition of a blank, a lubricant have been added to investigate the effect of friction between blank and punch in deep drawing process. It is observed that higher blank diameter and BHF raises the value of LDR and thus increases the drawability of aluminium AA1100 sheet and copper sheet. For FLD test, the level of FLD is increasing with increasing of blank thickness of aluminium AA1100. Besides that, the present of lubricant also raised the level of FLD and thus lessen the tendency of aluminium AA1100 sheet to rupture. From both of the experiment, it can be concluded that the formability of sheet metal is increasing due to increasing of blank diameter, blank thickness, BHF and present of lubricant. Besides that, the formability of aluminium AA1100 sheet is better compare to copper sheet. 2011-05 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/2885/1/CD5912.pdf Muhammad Safwan, Ismail (2011) Experimental study of formability of sheet metal in deep drawing process. Faculty of Mechanical Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:59135&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TS Manufactures
spellingShingle	TS Manufactures Muhammad Safwan, Ismail Experimental study of formability of sheet metal in deep drawing process
description	One of the most common outcomes in deep drawing process is a cup fractures that occur at the bottom of the cup shell. This cup fracture is cause by many parameters like blank holder force (BHF), blank diameter, friction between punch and blank, normal anisotropy of material, blank thickness and many more. The main objectives of the present study is to find the value of limiting drawing ratio (LDR) in LDR test and to predict the forming limit behaviour of sheet metal in deep drawing by construct a forming limit diagram (FLD) in FLD test for both aluminium AA1100 and copper. To determine the drawability of aluminium AA1100 and copper, LDR test with variable of blank diameters (80mm, 85mm, 90mm, 95mm and 100mm) and two set of BHF (with spring constant is 16.3 N/mm and 10 N/mm ) was utilized. On the other hand, the parameters that have used in FLD test is variable of blank thickness (1mm and 0.6mm) and surface condition of a blank using aluminium AA1100 as a constant material. In surface condition of a blank, a lubricant have been added to investigate the effect of friction between blank and punch in deep drawing process. It is observed that higher blank diameter and BHF raises the value of LDR and thus increases the drawability of aluminium AA1100 sheet and copper sheet. For FLD test, the level of FLD is increasing with increasing of blank thickness of aluminium AA1100. Besides that, the present of lubricant also raised the level of FLD and thus lessen the tendency of aluminium AA1100 sheet to rupture. From both of the experiment, it can be concluded that the formability of sheet metal is increasing due to increasing of blank diameter, blank thickness, BHF and present of lubricant. Besides that, the formability of aluminium AA1100 sheet is better compare to copper sheet.
format	Undergraduates Project Papers
author	Muhammad Safwan, Ismail
author_facet	Muhammad Safwan, Ismail
author_sort	Muhammad Safwan, Ismail
title	Experimental study of formability of sheet metal in deep drawing process
title_short	Experimental study of formability of sheet metal in deep drawing process
title_full	Experimental study of formability of sheet metal in deep drawing process
title_fullStr	Experimental study of formability of sheet metal in deep drawing process
title_full_unstemmed	Experimental study of formability of sheet metal in deep drawing process
title_sort	experimental study of formability of sheet metal in deep drawing process
publishDate	2011
url	http://umpir.ump.edu.my/id/eprint/2885/ http://umpir.ump.edu.my/id/eprint/2885/ http://umpir.ump.edu.my/id/eprint/2885/1/CD5912.pdf
first_indexed	2023-09-18T21:56:51Z
last_indexed	2023-09-18T21:56:51Z
_version_	1777414136779505664

Experimental study of formability of sheet metal in deep drawing process

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