References
- 日本國特許廳 特許出願公開番號 特開平7-51755 パイプ材のビ一ド成形裝置 株式會社 チュ-ブフォ-ミング
- J. Applied Metalworking v.2 no.4 Drawing of Heavy Wall Tubing with Floating Plugs B.Avitzur
- Engineering Plasticity W. Johnson;P.B.Meller
- Abaqus theory manual(Ver 5.6)
In this study, the optimized initial hole shape for T-branch forming was proposed to obtain effective welding region. Design variables were determined by approximation analysis using volume constant condition. We performed 3D elastic-plastic FEM(Finite Element Method) analysis to simulate T-branch forming process. The variation of height and thickness of T-branch with various hole shapes was investigated. The optimized initial hole shape equation was obtained by using results for the numerical analysis.