Transactions of Materials and Heat Treatment

Title：Effects of surface roughness and hydraulic pressure on friction coefficient in tube hydroforming

Authors： Wu Chunlei Yang Lianfa

Unit： Guilin University of Electronic Technology

KeyWords： tube hydroforming（THF） surface roughness hydraulic pressure coefficient of friction（COF）

ClassificationCode：TG386; TG394

year,vol(issue):pagenumber：2014,39(11):74-80

Abstract：

The relationship between the force generated by liquid and the contact force between tube and die was built by finite element simulation of the tube hydroforming. In order to reveal the effect law of surface roughness and hydraulic pressure on friction coefficient, a method about the determining of the coefficient of friction (COF) between tube and die was proposed based on the finite element. According to the definition of surface roughness, the FE model of tube hydroforming was conducted including various contacting conditions between tube and die from perfect smooth to different roughness by the commercial software ABAQUS, in which the surface morphology was expressed using the sinusoidal-profile surfaces. The results show that the deviation rate between the force generated by liquid and the contact force is small. The more the hydraulic pressure, the less the COF between tube and die, and the derivative of COF curve approaches zero. The more the surface roughness of tube, the more COF, but the deviation of COF is not obvious.

Funds：

国家自然科学基金资助项目(51271062)；广西自然科学基金资助项目(2013GXNSFAA019305);桂林电子科技大学研究生教育创新计划资助项目（GDYCSZ201401）

吴春蕾（1989-），女，硕士研究生

Reference：

［1］Ahmetoglu M, Altan T. Tube Hydroforming: Sate-of-the-art and future trends [J]. Journal of Material Procession Technology, 2000, 98(1): 25-33.
［2］ Plancak M, Vollertsen F, Woitschig, J. Analysis, finite element simulation and experimental investigation of friction in tube hydroforming [J]. Journal of Materials Processing Technology, 2005, 170(1-2): 220-228.
［3］ Hwang Y M, Huang L S. Friction tests in tube hydroforming [J]. Journal of Engineering Manufacture, 2005, 219(8): 587-593.
［4］ Yi H K, Yim H S, Lee G Y, et al. Experimental investigation of friction coefficient in tube hydroforming[J]. Transactions of Nonferrous Metals Society of China, 2011, 21: 194-198.
［5］ Hwang Y M, Wang K H, Kuo T Y. Friction tests in magnesium tube hydroforming at elevated temperatures [A]. AIP Conf. Proc. [C]. Belfast, United Kingdom: American Institute of Physics, 2011.
［6］ Vollersten F, Plancak M. On possibilities for the determination of the coefficient of friction in hydroforming of tubes[J]. Journal of Materials Processing Technology, 2002, 125-126: 412–420.
［7］张文澜, 张昌明. 圆柱与刚体平面弹性接触的静摩擦系数[J]. 机械管理开发, 2011, (5): 91-94.Zhang W L, Zhang C M. The research on static friction coefficient of elastic contact between cylinder and rigid body[J]. Mechanical Management and Development, 2011, (5): 91-94.
［8］ Lee B H, Keum Y T, Wagoner R H. Modeling of the friction caused by lubrication and surface roughness in sheet metal forming[J]. Journal of Materials Processing Technology, 2002, 130-131: 60-63.
［9］赵振铎, 王家安, 王丽君. 金属塑性成形平均摩擦系数与接触压力的关系研究[J]. 锻压装备与制造技术, 2006, 41(1): 40-43.Zhao Z D, Wang J A, Wang L J. Research on the relationship between average friction coefficient and contact press in metal plastic forming [J]. China Metal Forming Equipment & Manufacturing Technology, 2006, 41 (1): 40-43.
［10］闫小青, 谢志龙, 樊保圣, 等. 基于表面粗糙度影响的摩擦声发射特性研究[J]. 摩擦学学报, 2011, 31(6): 587-591.Yan X Q, Xie Z L, Fan B S, et al. Characteristics of friction－introduced acoustic emission based on the surface roughness[J]. Tribology, 2011, 31(6): 587-591.
［11］ Naceur H, Ben E S, Batoz J L, et al. Response surface methodology for the rapid design of aluminum sheet metal forming parameters[J]. Journal of Materials and Design, 2008, 29(4): 781-790.
［12］赵金娟, 王世军. 双粗糙表面接触模型中微观摩擦系数的确定[J]. 西安理工大学学报, 2012, 28 (2): 221-224.Zhao J J, Wang S J. Determination of microcosmic friction coefficient in contact model of double rough surfaces [J]. Journal of Xian University of Technology, 2012, 28 (2): 221-224.

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