Design modification in a multi-stage rectangular cup drawing process with a large aspect ratio by an elasto-plastic finite element analysis

Tool design is carried out for a multi-stage deep drawing and ironing process of a rectangular cup with the large aspect ratio using the result of the finite element analysis. The analysis incorporates three-dimensional continuum elements for an elasto-plastic finite element method with the explicit time integration scheme using LS-DYNA3D. The analysis simulates the five-stage deep drawing and ironing process with the thickness control of the cup wall. Simulation is performed in order to investigate the failure by tearing during the forming process at the initial state of tool design. The analysis reveals that the difference of the drawing ratio within the cross section induces non-uniform metal flow which causes severe local extension. The irregular contact condition between the blank and the die also induces non-uniform metal flow which causes local wrinkling. This paper identifies such unfavorable mechanism in the rectangular cup drawing with ironing and proposes a new tool design with the guideline for modification in the design of the process and the sequential tool shape. The finite element analysis result with the improved tool design confirms that the proposed design not only reduces the possibility of failure but also improves the quality of a deep-drawn product. The numerical result shows fair coincidence with the experimental result.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2001-06
Language
ENG
Keywords

Tool design; Multi-stage rectangular cup deep drawing and ironing process; Multi-stage rectangular cup deep drawing and ironing process; Finite element analysis

Citation

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY v.113 no.0924-0136 pp.766 - 773

ISSN
0924-0136
URI
http://hdl.handle.net/10203/19374
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
IJ37.pdf(798.21 kB)Download
  • Hit : 497
  • Download : 3001
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button
⊙ Cited 13 items in WoSClick to see citing articles inrecords_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0