The mechanics of incremental sheet forming

Jackson, Kathryn; Allwood, Julian

Affiliations

¹Department of Engineering, University of Cambridge, 16 Mill Lane, Cambridge CB2 1RX, UK

Abstract and keywords

The deformation mechanism of incremental sheet forming (ISF) is examined experimentally through forming specially prepared copper sheets. Strain distributions through the thickness of the sheets are measured for two configurations of ISF: two-point incremental forming (TPIF) and single-point incremental forming (SPIF), and a comparison is made to pressing. The measurements show that the deformation mechanisms of both SPIF and TPIF are stretching and shear in the plane perpendicular to the tool direction, with shear in the plane parallel to the tool direction. Strain components increase on successive laps, and the most significant component of strain is shear parallel to the tool direction. Increasing stretching and shear perpendicular to the tool direction account for differences between the sine law prediction and measured wall thickness for both SPIF and TPIF. The observed mechanisms of SPIF and TPIF differ from a mechanism of pure shear that has previously been assumed.

Keywords: Incremental sheet forming; Sine law; Deformation mechanics; Shear spinning; Pressing; Forming limits

Links

DOI: 10.1016/j.jmatprotec.2008.03.025

WoS: 000263394000005

History

Received: 2007-09-18

Revised: 2008-03-10

Accepted: 2008-03-14

Cited Works (4)

Year	Entry
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Cited By (10)

Year	Entry
2011	Echrif SBM, Hrairi M. Research and progress in incremental sheet forming processes. Mater Manufact Process. 2011;26(11):1404-1414.
2012	Thibaud S, Ben Hmida R, Richard F, Malécot P. A fully parametric toolbox for the simulation of single point incremental sheet forming process: numerical feasibility and experimental validation. Simul Model Pract Theory. December 2012;29:32-43.
2017	Gatea S, Ou H, Lu B, McCartney G. Modelling of ductile fracture in single point incremental forming using a modified GTN model. Eng Fract Mech. December 2017;186:59-79.
2013	Arfa H, Bahloul R, BelHadjSalah H. Finite element modelling and experimental investigation of single point incremental forming process of aluminum sheets: influence of process parameters on punch force monitoring and on mechanical and geometrical quality of parts. Int J Mater Form. December 2013;6(4):483-510.
2018	Duflou JR, Habraken A-M, Cao J, Malhotra R, Bambach M, Adams D, Vanhove H, Mohammadi A, Jeswiet J. Single point incremental forming: state-of-the-art and prospects. Int J Mater Form. November 2018;11(6):743-773.
2023	Vodenitcharova T, Daniel WJT, Liu S, Meehan PA. A rapid kinematic method for the prediction of sheet performance in two-point incremental sheet forming. J Mater Proc Technol. March 2023;312:117850.
2009	Robert C. Contribution à la simulation numérique des procédés de mise en forme: Application au formage incrémental et au formage superplastique [Contribution to the Numerical Simulation of Sheet Metal Forming Proceses: Application to Incremental Sheet Forming and Superplastic Forming] [PhD thesis]. Paris, France: École Nationale Supérieure d'Arts et Métiers; December 2009.
2010	Eyckens P. Formability in Incremental Sheet Forming: Generalization of the Marciniak-Kuczynski Model [PhD thesis]. Leuven, Belgium: Katholieke Universiteit Leuven; May 2010.
2018	Esmaeilpour MR. Finite Element Simulation of Single Point Incremental Sheet Forming With Barlat 2004 Yield Function, CPFEM, and 3D RVE [PhD thesis]. The Ohio State University; 2018.
2015	Guzmán CF. Experimental and Numerical Characterization of Damage and Application to Incremental Forming [PhD thesis]. Liège, Belgique: Université de Liège; November 2015.