Adaptive simulation of the hydraulic bulging forming with counter pressure control

by Chen, Bing-hong

Abstract (Summary)
The tube hydro-forming (THF) is an innovative manufacturing process which is used to manufacture many industrial components widely. The success of THF is largely dependent on the selection of the loading paths: internal pressure versus time, axial feeding versus time and counter punch (CP) versus time. The finite element analysis is used to simulate the forming result of different loading paths and reduce the cost of die-testing. This paper presents the forming of T-branches and T-branches components with CP. These paper has developed an adaptive simulation algorithm by combining FEM code LS-DYNA 3D with controller subroutine to get ideal bulging height and uniform thickness of the formed tube with multi-stages. Discuss influence under different parameters of process. The results are compared with experimental results to validate accuracy by this adaptive control methods.
Bibliographical Information:

Advisor:Yeong-maw Hwang; Cheng-Tang Pan; Wei-ching Yeh; Woei-shyan Lee

School:National Sun Yat-Sen University

School Location:China - Taiwan

Source Type:Master's Thesis

Keywords:tube hydro forming adaptive simulation finite element analysis


Date of Publication:09/06/2005

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