Numerical and experimental studies for the effects of through-the-thickness shear on formability in single point incremental forming

Dongkai Xu, Rajiv Malhotra, Jun Chen, Bin Lu, Jian Cao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Single point incremental forming (SPIF) is a die-less sheet metal forming process in which blank sheets are locally deformed by using a generic forming tool moving along a pre-defined trajectory. Compared to conventional sheet forming operations, this technique achieves higher formability, greater process flexibility and reduced forming force. This is not only due to the characteristic of localized deformation, but also is because of higher through-the-thickness shear. In this work, in order to further investigate the influences of through-the-thickness on formability, a recently developed fracture model is utilized to simulate the forming of a 70° cone by deep drawing and SPIF. As a result, the predicted fracture depth of the cone formed by deep drawing is lesser than that of the same cone obtained in SPIF. It demonstrates that through-the-thickness shear in SPIF is much higher than the one in deep drawing process. Furthermore, a series of experiments in SPIF with tool rotation are performed to physically validate that through-the-thickness shear is a positive factor to formability when it is within a certain range.

Original languageEnglish (US)
Title of host publication11th International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM 2013
Pages969-976
Number of pages8
DOIs
StatePublished - Jun 7 2013
Event11th International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM 2013 - Shenyang, China
Duration: Jul 6 2013Jul 10 2013

Publication series

NameAIP Conference Proceedings
Volume1532
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other11th International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM 2013
CountryChina
CityShenyang
Period7/6/137/10/13

Keywords

  • Formability
  • Fracture Model
  • Single Point Incremental Forming (SPIF)
  • Through-the-thickness shear
  • Tool Rotation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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