Title page for etd-0905101-123517


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URN etd-0905101-123517
Author Jian-Cheng Huang
Author's Email Address No Public.
Statistics This thesis had been viewed 5347 times. Download 3505 times.
Department Mechanical Engineering
Year 2000
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Analysis of Hydraulic Bulge Forming of Tubes
Date of Defense 2001-07-10
Page Count 64
Keyword
  • tube hydroforming
  • bulge
  • finite difference method
  • Abstract A mathematical model considering ellipsoidal surface for the forming tube is proposed in this work to examine the plastic deformation behavior of a thin-walled tube during tube bulge hydroforming process in an open die. In the formulation of this mathematical model, nonuniform thinning in the free bulged region and sticking and sliding friction modes between the tube and die are considered. In the sticking friction mode, the elements in contact with the die do not move or slide after contact with the die. Whereas, in the sliding friction mode, the elements in contact with the die will continue to deform plastically in the subsequent forming process. The relationship between the internal pressure and the bulge height of the tube is examined. The effects of various forming parameters such as the die entry radius, the initial thickness, the length/diameter ratio, material property, etc., upon the forming pressure and the thickness distribution of products were discussed systematically.
    Advisory Committee
  • Rong-Shean Lee - chair
  • Shyue-Jian Wu - co-chair
  • Jin-Zhong Xu - co-chair
  • Yeong-Maw Hwang - advisor
  • Files
  • etd-0905101-123517.pdf
  • indicate in-campus access immediately and off_campus access in a year
    Date of Submission 2001-09-05

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