International Journal of Material Forming

, Volume 9, Issue 3, pp 371–382

Optimization of relative tool position in accumulative double sided incremental forming using finite element analysis and model bias correction

  • Ebot Ndip-Agbor
  • Jacob Smith
  • Huaqing Ren
  • Zhen Jiang
  • Jiachen Xu
  • Newell Moser
  • Wei Chen
  • Z. Cedric Xia
  • Jian Cao
Thematic Issue: Flexible forming - Incremental Sheet Forming & Roll Forming

DOI: 10.1007/s12289-014-1209-4

Cite this article as:
Ndip-Agbor, E., Smith, J., Ren, H. et al. Int J Mater Form (2016) 9: 371. doi:10.1007/s12289-014-1209-4

Abstract

Double-Sided Incremental Forming (DSIF) uses two small, independently moving, hemispherical tools on either side of the sheet to form a desired shape by following a predefined tool path. This study was motivated by the observation that the relative tool position of the tools, specified in the tool path generation algorithm, affects the formed geometric accuracy. A methodology for defining the relative tool positioning in the tool path generation algorithm based on local part geometry is proposed using simplified Finite Element Analysis (FEA) and sample physical experiments combined with Gaussian Process modeling techniques. This approach can take into account the mechanics of deformation in DSIF explicitly and physical compliance of the DSIF machine implicitly. Physical experiments were performed to demonstrate the effectiveness of the proposed framework.

Keywords

Incremental forming Process design Design methodology 

Nomenclature

D

the in-plane distance between the two tool axes

S

distance from top of bottom to bottom of the sheet

Δz

incremental depth

θdesired

desired wall angle

θformed

formed wall angle

rt

radius of top tool

rb

radius of bottom tool

t0

initial sheet thickness

Copyright information

© Springer-Verlag France 2015

Authors and Affiliations

  • Ebot Ndip-Agbor
    • 1
  • Jacob Smith
    • 1
  • Huaqing Ren
    • 1
  • Zhen Jiang
    • 1
  • Jiachen Xu
    • 1
  • Newell Moser
    • 1
  • Wei Chen
    • 1
  • Z. Cedric Xia
    • 2
  • Jian Cao
    • 1
  1. 1.Northwestern UniversityEvanstonUSA
  2. 2.Ford Motor CompanyDearbornUSA

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