{"title":"Simulation of Kinetic Friction in L-Bending of Sheet Metals","authors":"Maziar Ramezani, Thomas Neitzert, Timotius Pasang","volume":90,"journal":"International Journal of Industrial and Manufacturing Engineering","pagesStart":560,"pagesEnd":565,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/9998580","abstract":"
This paper aims at experimental and numerical investigation of springback behavior of sheet metals during L-bending process with emphasis on Stribeck-type friction modeling. The coefficient of friction in Stribeck curve depends on sliding velocity and contact pressure. The springback behavior of mild steel and aluminum alloy 6022-T4 sheets was studied experimentally and using numerical simulations with ABAQUS software with two types of friction model: Coulomb friction and Stribeck friction. The influence of forming speed on springback behavior was studied experimentally and numerically. The results showed that Stribeck-type friction model has better results in predicting springback in sheet metal forming. The FE prediction error for mild steel and 6022-T4 AA is 23.8%, 25.5% respectively, using Coulomb friction model and 11%, 13% respectively, using Stribeck friction model. These results show that Stribeck model is suitable for simulation of sheet metal forming especially at higher forming speed.<\/p>\r\n","references":"[1]\tJ.R. Cho, S.J. Moon, Y.H. Moon, S.S. Kang, \"Finite element investigation on spring-back characteristics in sheet metal U-bending process\u201d, Journal of Materials Processing Technology 141 (2003) 109\u2013116.\r\n[2]\tMullan HB (2004) Improved prediction of springback on final formed components. J. of Materials Processing Technology 153\u2013154, pp. 464\u2013471.\r\n[3]\tLi KP, Carden WP, Wagoner RH (2002) Simulation of springback. Int. J. of Mechanical Sciences 44, pp. 103\u2013122.\r\n[4]\tM. Math, B. Grizelj, \"Finite element approach in the plate bending process\u201d, J. of Materials Processing Technology 125\u2013126 (2002) 778\u2013784.\r\n[5]\tLee BH, Keum YT, Wagoner RH (2002) Modeling of the friction caused by lubrication and surface roughness in sheet metal forming. J. of Materials Processing Technology 130\u2013131, pp. 60\u201363.\r\n[6]\tY.E. Ling, H.P. Lee, B.T. Cheok, \"Finite element analysis of springback in L-bending of sheet metal\u201d, Journal of Materials Processing Technology 168 (2005) 296\u2013302.\r\n[7]\tF.K. Chen, S.F. Ko, \"Deformation analysis of springback in L-bending of sheet metal\u201d, Journal of Achievements in Materials and Manufacturing Engineering, Volume 18 Issue 1-2 September\u2013October 2006.\r\n[8]\tMatuszak A (2000) Factors influencing friction in steel sheet forming. J. of Materials Processing Technology 106, pp. 250\u2013253.\r\n[9]\tJacobson B (2003) The Stribeckmemoriallecture. Tribology Int. 36, pp. 781\u2013789.\r\n[10]\tLu X, Khonsari MM, Gelinck ERM (2006) The Stribeck curve: experimental results and theoretical prediction. ASME J. of Tribology, Vol. 128, October 2006.\r\n[11]\tGelink ERM, Schipper DJ (2000) Calculation of Stribeck curves for line contacts. Tribology Int. 33, pp. 175-181.\r\n[12]\tRamezani M, Ripin ZM, Ahmad R (2009) Computer aided modelling of friction in rubber-pad forming process. Journal of Materials Processing Technology 209 (10) , pp. 4925-4934.\r\n[13]\tW. Wang, R.H. Wagoner,X.J. Wang, \"Measurement of Friction under Sheet Forming Conditions\u201d, Metallurgical and Materials Transactions A, Volume 27A, December 1996\u20133971.\r\n[14]\tWang Z, Nakamura T, Dohda K, Obika T (2003) FEM analysis of contact mechanism in press-forming of lubricant pre-coated steel sheet. J. of Materials Processing Technology 140, pp. 514\u2013519.\r\n[15]\tHao S, Klamecki BE, Ramalingam S (1999) Friction measurement apparatus for sheet metal forming. Wear 224, pp. 1\u20137.\r\n[16]\tKuzman K (2001) Problems of accuracy control in cold forming. J. of Materials Processing Technology 113, pp. 10\u201315.\r\n[17]\tGusel L, Anzel I, Brezocnik M (2005) Effect of lubrication on the stress distribution in an extruded material. Int. J. of Advanced Manufacturing Technology, pp. 25: 288-291.\r\n","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 90, 2014"}