Main Article Content
Micro metal forming has an application potential in different industrial fields. Flexible tool-assisted sheet metal forming at micro scale is among the forming techniques that have increasingly attracted wide attention of researchers. This forming process is a suitable technique for producing micro components because of its inexpensive process, high quality products and relatively high production rate. This study presents a novel micro deep drawing technique through using floating ring as an assistant die with flexible pad as a main die. The floating ring designed with specified geometry is located between the process workpiece and the rubber pad. The function of the floating ring in this work is to produce SS304 micro cups with profile radius precision as required as possible. The finite element simulations are accomplished using the commercial code Abaqus/Standard. In order to verify the simulation models, micro deep drawing experiments are carried out using a special set up developed specifically to meet the requirements of the simulations. The results revealed that the proposed technique is feasible to be adopted for producing micro cups with remarkable application capability in miniaturization technology.
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 Masoomeh Salahshoor & Abdolhamid Gorji and Mohammad Bakhshi- Jooybari, “The study of forming concave-bottom cylindrical parts in hydroforming process”, International Journal of Advanced Manufacture Technology, (2015) 79:1139–1151.
 Ihsan Irthiea, Graham Green, Safa Hashim and Abdulbast Kriama, “Experimental and numerical investigation on micro deep drawing process of stainless steel 304 foil using flexible tools”, International Journal of Machine Tools & Manufacture, (2014) 76:21–33.
 Ihsan K. Irthiea and Graham Green, “Evaluation of micro deep drawing technique using soft die-simulation and experiments”, International Journal of Advanced Manufacture Technology, (2017) 89:2363–2374.
 Quadrini F, Santo L, Anna E (2010) Flexible forming of thin aluminum alloy sheets. Int J Mod Manuf Technol, II: 79–84.
 Balasubramanian Nagarajan, Sylvie Castagne, Zhongke Wang, H.Y. Zheng and Kartikeyan Nadarajan, “Influence of plastic deformation in flexible pad laser shock forming – experimental and numerical analysis”, International Journal of material forming, 1-15.
 Liu Y, Hua L, Lan J, Wei X, “Studies of the deformation styles of the rubber-pad forming process used for manufacturing metallic bipolar plates”, J Power Sources, (2010) 195:8177–8184.
 C. Kyu, M. Geun, and C. Gil, “Effect of rubber forming process parameters on micro-patterning of thin metallic plates,” Procedia Eng., vol. 81, pp. 1439–1444, 2014.
 Wang X, Du D, Zhang H, Shen Z, Liu H, Zhou J, Liu H, Hu Y, Guc, “Investigation of microscale laser dynamic flexible forming process-simulation and experiments”, International Journal of Machine Tools & Manufacture, (2013) 67:8–17.
 X. Ma, R. Lapovok, C. Gu, A. Molotnikov, Y. Estrin, E. V. Pereloma, C. H. J. Davies and P. D. Hodgson, "Deep drawing behaviour of ultrafine grained copper: modelling and experiment", Journal of Material sience, vol. 44, pp. 3807-3812, 2009.
 R. Lapovok, I. Timokhina, P. W. J. Mckenzie and R. O’donnell, "Processing and properties of ultrafine-grain aluminium alloy 6111 sheet", Journal of Materials Processing Technology, vol. 200, pp. 441-450, 2008.
 American Society for Testing and Materials ASTM, “Standard Test Methods for Tension Testing of Metallic Materials,” Am. Assoc. State, pp. 1–27, 2010.
 Le Port A, Toussaint F and Arrieux R, “Finite element study and sensitive analysis of the deep drawing formability of commercially pure titanium”. International Journal of material forming, (2009) 2:121–129.
 D.V. Hai, S. Itoh, T. Sakai, S. Kamado, Y. Kojima,”Experimentally and numerical study on deep drawing process for magnesium alloy sheet at elevated temperatures”, Materials Transactions, (2008) 49:1101–1106.
 Ihsan Khalaf Irthiea, “Process Analysis and Design in Micro Deep Drawing Utilizing a Flexible Die,” University of Glasgow, 2014.
 L. Crocker and B. Duncan, “Measurement methods for obtaining volumetric coefficients for hyperelastic modelling of flexible adhesives”, Performance of Adhesive Joints Program, Project PAJex2 - Flexible Adhesives, PAJex2 Report No 3.
 Linfa Peng, Peng Hu, Xinmin Lai, Deqing Mei, Jun Ni, “Investigation of micro/ meso sheet soft punch stamping process—simulation and experiments”, Materials &Design, (2009) 30:783–790.