Inverse Analysis of Aluminum Tubes Hydroformed Under Free Conditions and Within a Conical Die
An inverse approach to tube hydroforming developed in our previous work is used in this paper for the analysis of Aluminum 6061-T4 tubes hydroformed within a conical die. This approach, which extended the flat sheet forming analysis by Guo et al. to tube hydroforming problems, considers two configurations: the as-formed conical tube coaxial with the initial round tube. The analysis uses a membrane finite element formation within the framework of the deformation theory and Hill?s criterion to describe the plastic flow. Furthermore, a fracture criterion based on the material forming limit diagram (FLD) is employed to predict the onset of necking. Hydroforming experiments on Aluminum tubes using a conical die were also conducted to validate the model. Good agreements of results have been found for the deformed configurations in which the bending effect is small.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 908738
- Report Number(s):
- PNNL-SA-37251; TRN: US200722%%770
- Resource Relation:
- Conference: Energy Efficient Manufacturing Processes. Fourth Materials Processing & Manufacturing Division International Symposium on Global Innovations, 129-136
- Country of Publication:
- United States
- Language:
- English
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