Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61742
Title: Grain size effect on multi-stage micro deep drawing of micro cup with domed bottom
Authors: Li, WT
Fu, MW 
Wang, JL
Meng, B
Keywords: Deformation behavior
Deformation defect
Grain size effect
Multi-stage micro deep drawing
Thickness variation
Issue Date: 2016
Publisher: Springer
Source: International journal of precision engineering and manufacturing, 2016, v. 17, no. 6, p. 765-773 How to cite?
Journal: International journal of precision engineering and manufacturing 
Abstract: A two-stage micro deep drawing system was designed and developed to manufacture a micro cup with domed bottom. The copper blank was annealed at three different conditions to obtain different grain sizes in such a way to study the grain size effect on the deformation behavior and thickness variation of the micro part. To investigate the instantaneous effect and deformation behavior, finite element simulation was used to simulate the whole drawing process. It revealed that the fracture in the place with the thinnest thickness in the micro part drawn from a circle blank with residual stress induced in blanking can be easily happen and the deformation load in the first-stage decreases more than that in the second-stage with the increase of grain size. Moreover, the micro part with a larger grain size has more nonuniform thickness and severer thinning around the punch corner. The surface roughness at the bottom of micro part increases with the grain size. The surface roughness at the wall of it, however, decreases with the deformation stage mainly due to the ironing effect. The research promotes the understanding of grain size effect on multi-stage micro deep drawing and facilitates the development of microforming process.
URI: http://hdl.handle.net/10397/61742
ISSN: 2234-7593 (Print)
2005-4602 (online)
DOI: 10.1007/s12541-016-0094-9
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page view(s)

23
Last Week
4
Last month
Checked on Aug 14, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.