Browse > Article
http://dx.doi.org/10.14775/ksmpe.2020.19.05.98

Design of Pipe Expanding Die by Upper Bound Analysis and Finite Element Method  

Cho, Yong-Il (Dept. of Mechanical Engineering, Graduate School, Chungbuk Nat'l Univ.)
Kim, Seung-Hwan (Dept. of Mechanical Engineering, Graduate School, Chungbuk Nat'l Univ.)
Qiu, Yuan-gen (Dept. of Mechanical Engineering, Graduate School, Chungbuk Nat'l Univ.)
Cho, Hae-Yong (Dept. of Mechanical Engineering, Graduate School, Chungbuk Nat'l Univ.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.19, no.5, 2020 , pp. 98-104 More about this Journal
Abstract
Pipe expansion involves various methods to enlarge the diameter of the pipes with the use of a mandrel or punch placed inside the pipe. In this study, the upper bound method was used to analyze the pipe expanding process as well as design a die. A kinematically admissible velocity field was derived for the upper bound analysis with the occurrence of pipe thinning during the expansion factored in. The analysis confirms that a semi-cone angle of the punch between 15ween pip is most advantageous for pipe expansion. The results of the upper bound analysis, which were also consistent with those of the FEM, can be useful for the design of a pipe expansion die.
Keywords
Upper Bound Method; FEM; Pipe Expansion Process;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Hong, S., Hyun, H., Hwang, J., "Study of Tube Expansion to Produce Hair-Pin Type Heat Exchanger Tubes using the Finite Element Method," Transactions of Materials Processing, Vol. 23, No. 3, pp. 164-170, 2014.   DOI
2 Kang, H. S., Kim, D. S., "Design of a Mandrel for Expansion of the Tube of the Heat Exchanger," In Proceedings of the KSME Conference The Korean Society of Mechanical Engineers, pp. 430-434, 2004.
3 Karrech, A., Seibi, A., "Analytical Model for the Expansion of Tubes under Tension," Journal of Materials Processing Technology, Vol. 6, No. 210, pp. 356-362, 2010.   DOI
4 Avitzur, B., Tube Sinking and Expanding, Journal of Engineering for Industry, pp. 71-79, 1965.