Formability study and forming path optimization in single-point incremental forming process
Incremental sheet metal forming is becoming a popular approach for forming intricate shapes especially for rapid prototyping and small batch production of sheet metals. In this work, the formability of Aluminium sheet metal in a single-point incremental forming (SPIF) has been investigated numerically and the effect of the feed rate, the vertical feed (pitch) and the spindle revolution on the formability have been studied. Parameters study results built a base for enhancing SPIF process and presenting two approaches to optimize forming path. In these approaches, variation of vertical pitch has been considered and the effects of this parameter on the strain distribution and formability have been studied. It is found that these methods normalize the strain distribution and improve the formability. Finite element method (FEM) with the aid of design of experiments (DOE) technique is used for predicting the parameters effects and optimizing forming path. Experiments are also carried out to verify the validity of numerical results.
Hussain G, Gao L and Zhang Z. Formability evaluation of a pure titanium sheet in the cold incremental forming process. The International Journal of Advanced Manufacturing Technology. 2008; 37: 920-6.
Petek A, Kuzman K and Kopač J. Deformations and forces analysis of single point incremental sheet metal forming. Archives of Materials Science and Engineering. 2009; 35: 35-42.
Rattanachan K and Chungchoo C. Formability in single point incremental forming of dome geometry. AIJSTPME. 2009; 2: 57-63.
Hamilton K and Jeswiet J. Single point incremental forming at high feed rates and rotational speeds: Surface and structural consequences. CIRP Annals-Manufacturing Technology. 2010; 59: 311-4.
Arfa H, Bahloul R and 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. International Journal of Material Forming. 2012: 1-28.
Ambrogio G, Gagliardi F, Bruschi S and Filice L. On the high-speed Single Point Incremental Forming of titanium alloys. CIRP Annals-Manufacturing Technology. 2013.
Petek A, Kuzman K and Suhač B. Autonomous on-line system for fracture identification at incremental sheet forming. CIRP Annals-Manufacturing Technology. 2009; 58: 283-6.
Martins P, Bay N, Skjødt M and Silva M. Theory of single point incremental forming. CIRP Annals-Manufacturing Technology. 2008; 57: 247-52.
Allwood JM and Shouler DR. Generalised forming limit diagrams showing increased forming limits with non-planar stress states. International Journal of Plasticity. 2009; 25: 1207-30.
Hussain G, Gao L, Hayat N and Ziran X. A new formability indicator in single point incremental forming. Journal of Materials Processing Technology. 2009; 209: 4237-42.
LI J-c, LI C and ZHOU T-g. Thickness distribution and mechanical property of sheet metal incremental forming based on numerical simulation. Transactions of Nonferrous Metals Society of China. 2012; 22: s54-s60.
Malhotra R, Xue L, Belytschko T and Cao J. Mechanics of fracture in single point incremental forming. Journal of Materials Processing Technology. 2012; 212: 1573-90.
Yamashita M, Gotoh M and Atsumi S-Y. Numerical simulation of incremental forming of sheet metal. Journal of materials processing technology. 2008; 199: 163-72.
Hrairi M and Echrif S. PROCESS SIMULATION AND QUALITY EVALUATION IN INCREMENTAL SHEET FORMING. IIUM Engineering Journal. 2011; 12.
Azaouzi M and Lebaal N. Tool path optimization for single point incremental sheet forming using response surface method. Simulation Modelling Practice and Theory. 2012; 24: 49-58.
Fu Z, Mo J, Han F and Gong P. Tool path correction algorithm for single-point incremental forming of sheet metal. The International Journal of Advanced Manufacturing Technology. 2013; 64: 1239-48.
Behera AK, Verbert J, Lauwers B and Duflou JR. Tool path compensation strategies for single point incremental sheet forming using multivariate adaptive regression splines. Computer-Aided Design. 2012.
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