0
TECHNICAL PAPERS

Analysis of Tube Free Hydroforming Using an Inverse Approach With FLD-Based Adjustment of Process Parameters

[+] Author and Article Information
Ba Nghiep Nguyen, Kenneth I. Johnson, Mohammad A. Khaleel

Computational Mechanics and Material Behavior Group, Pacific Northwest National Laboratory, Richland, WA 99352

J. Eng. Mater. Technol 125(2), 133-140 (Apr 04, 2003) (8 pages) doi:10.1115/1.1555651 History: Received February 25, 2002; Revised August 12, 2002; Online April 04, 2003
Copyright © 2003 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Principle of tube free hydroforming
Grahic Jump Location
Schematics of stable shapes during free hydroforming
Grahic Jump Location
Loading paths: end-feed versus internal pressure for a hot-dip galvanized (HG/Z140) DP600 tube (L0=220 mm,2R0=60 mm,h0=1.47 mm). The figure also shows the analytical and experimental curves used in 2.
Grahic Jump Location
Triangular finite element mesh and deformed configuration (for s1=s2=4.2 mm) of a quarter of the tube
Grahic Jump Location
Equivalent plastic strains for the deformed configuration illustrated in Fig. 4: (a) incremental analysis (b) inverse analysis
Grahic Jump Location
Equivalent plastic strains along a longitudinal arc length measured from a tube end to a middle section point
Grahic Jump Location
Equivalent stresses for the deformed configuration illustrated in Fig. 4: (a) incremental analysis (b) inverse analysis
Grahic Jump Location
Distribution of external forces per unit area for the deformed configuration illustrated in Fig. 4. The values in the unsupported section correspond to the internal pressure intensity.
Grahic Jump Location
Thickness distributions for the deformed configuration illustrated in Fig. 4: (a) incremental analysis (b) inverse analysis
Grahic Jump Location
Thickness distributions along a longitudinal arc length considered in Fig. 6
Grahic Jump Location
Prediction of failure based on the forming limit diagram: (a) FLD-based criterion according to Eq. (14), (b) snapshot of the failure area (colored in white).
Grahic Jump Location
Initial mesh determined by the inverse analysis
Grahic Jump Location
FLD-based criterion values after end-feed adjustments. The new end-feed value is s1=s2=7.35 mm.
Grahic Jump Location
Prediction of internal pressure in the deformed tube after end-feed adjustments
Grahic Jump Location
Equivalent plastic strains after end-feed adjustments
Grahic Jump Location
Thickness distribution after end-feed adjustments
Grahic Jump Location
Thickness distributions along a longitudinal arc length measured from the beginning of the unsupported portion to the middle section of the tube: (a) before end-feed adjustment (b) after end-feed adjustment

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In