On the thinning variations in hydrostatic forming of sheet metal

In sheet metal forming, thinning phenomenon is one of the most concerned topics to ameliorate the final quality of the manufactured parts. The thinning variations depend on many input parameters, such as technological parameters, geometric shape of die, workpiece’s materials, and forming methods. Hy...

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Main Authors: Thu Thi Nguyen, N.D. Trung
Format: Article
Language:English
Published: Universiti Malaysia Pahang Publishing 2021-03-01
Series:Journal of Mechanical Engineering and Sciences
Subjects:
Online Access:https://journal.ump.edu.my/jmes/article/view/2968
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author Thu Thi Nguyen
N.D. Trung
author_facet Thu Thi Nguyen
N.D. Trung
author_sort Thu Thi Nguyen
collection DOAJ
description In sheet metal forming, thinning phenomenon is one of the most concerned topics to ameliorate the final quality of the manufactured parts. The thinning variations depend on many input parameters, such as technological parameters, geometric shape of die, workpiece’s materials, and forming methods. Hydrostatic forming technology is particularly suitable for forming thin-shell products with complex shapes. However, due to the forming characteristics, the thinning variations in this technology are much more intense than in other forming methods. Therefore, in this paper, an empirical study is developed to determine the thinning variations in hydrostatic forming for cylindrical cup. Measurement of thickness at various locations of deformed products are conducted to investigate the thickness distribution and determine the dependence of the largest thinning ratio on the input parameters (including the blank holder pressure, the relative depth of the die and the relative thickness of the workpiece). The results are expressed in charts and equation which allow determining the effect of each input parameter on the largest thinning ratio.
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spelling doaj.art-bc3d96cdc8e64a1cabd1a4090ddcf1e92023-09-03T14:11:54ZengUniversiti Malaysia Pahang PublishingJournal of Mechanical Engineering and Sciences2289-46592231-83802021-03-011517824783610.15282/jmes.15.1.2021.17.0617On the thinning variations in hydrostatic forming of sheet metalThu Thi Nguyen0N.D. Trung1School of Mechanical Engineering, Hanoi University of Sciences and Technology, Hanoi, VietnamSchool of Mechanical Engineering, Hanoi University of Sciences and Technology, Hanoi, VietnamIn sheet metal forming, thinning phenomenon is one of the most concerned topics to ameliorate the final quality of the manufactured parts. The thinning variations depend on many input parameters, such as technological parameters, geometric shape of die, workpiece’s materials, and forming methods. Hydrostatic forming technology is particularly suitable for forming thin-shell products with complex shapes. However, due to the forming characteristics, the thinning variations in this technology are much more intense than in other forming methods. Therefore, in this paper, an empirical study is developed to determine the thinning variations in hydrostatic forming for cylindrical cup. Measurement of thickness at various locations of deformed products are conducted to investigate the thickness distribution and determine the dependence of the largest thinning ratio on the input parameters (including the blank holder pressure, the relative depth of the die and the relative thickness of the workpiece). The results are expressed in charts and equation which allow determining the effect of each input parameter on the largest thinning ratio.https://journal.ump.edu.my/jmes/article/view/2968hydrostatic formingthe maximum thinning ratioblank holder pressureforming pressuresheet metal forming
spellingShingle Thu Thi Nguyen
N.D. Trung
On the thinning variations in hydrostatic forming of sheet metal
Journal of Mechanical Engineering and Sciences
hydrostatic forming
the maximum thinning ratio
blank holder pressure
forming pressure
sheet metal forming
title On the thinning variations in hydrostatic forming of sheet metal
title_full On the thinning variations in hydrostatic forming of sheet metal
title_fullStr On the thinning variations in hydrostatic forming of sheet metal
title_full_unstemmed On the thinning variations in hydrostatic forming of sheet metal
title_short On the thinning variations in hydrostatic forming of sheet metal
title_sort on the thinning variations in hydrostatic forming of sheet metal
topic hydrostatic forming
the maximum thinning ratio
blank holder pressure
forming pressure
sheet metal forming
url https://journal.ump.edu.my/jmes/article/view/2968
work_keys_str_mv AT thuthinguyen onthethinningvariationsinhydrostaticformingofsheetmetal
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