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Bending Process Optimization of Dual Phase 780 (DP780) Tubes for Body Structural and Chassis Applications
Technical Paper
2010-01-0230
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
To reach safety, emissions, and cost objectives, manufacturers of automotive body structural and chassis components shape thin gauge, high strength steel tube with a bending, pre-forming and hydroforming process. Challenging grades and bend severity require a careful optimization of the bending procedure. A joint project between Ford and ArcelorMittal Tubular Products investigated suitable bending parameters for severe bends using commercially available thin-walled DP780 and HSLA350 tubes. This paper summarizes the measurement methods found to be capable of capturing small differences in bending formability and details the influence of bender variables such as boost, pressure die, center-line bend radius and bend angle on the wrinkling, thinning and springback of these tubes. As a result of this work, recommendations were made as to effective bender set-ups for these tubes.
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Citation
Koganti, R., Elliott, A., van Riemsdijk, I., Nelson, R. et al., "Bending Process Optimization of Dual Phase 780 (DP780) Tubes for Body Structural and Chassis Applications," SAE Technical Paper 2010-01-0230, 2010, https://doi.org/10.4271/2010-01-0230.Also In
References
- Chen, X.M. Shi, F. Watanabe, K. Hayashida, Y. Omiya, Y. “Hydroforming Simulation for High Strength Steels,” SAE Technical Paper 2006-01-0545 2006
- Auto/Steel Partership Report “Formability Limits of Steel Tubes” 2004
- Chen, K-K. Chen, J. J. Chen, X. M. “Plane Strain Simulation For Corner Fill Of Hydroforming Tubes In Oversized Die,” SAE Technical Paper 2005-01-0093 2005
- Ji, W. “Validation of Math-Based Process for Hydroforming Dual Phase Steel Tubes,” SAE Technical Paper 2007-01-1691 2007
- Chen, K-K. Chen, J. J. Chen, X. M. “Plane Strain Simulation For Corner Fill Of Hydroforming Tubes In Oversized Die,” SAE Technical Paper 2005-01-0093 2005
- Chen X.M. Palanisamy K. Zhu X.H. “Process Parameter Sensitivity Study on Tube Hydroforming” LS-DYNA User Conference Detroit, Michigan 2002
- Chen, X. M. Liu, S. D. “Experimental and Simulation Study on Tube Bending and Hydroforming,” SAE Technical Paper 2000-01-1114 2000
- Chen, X. M. Shi, F. Watanabe, K. Hayashida, Y. Omiya, Y. “Hydroforming Simulation for High Strength Steels SAE Technical Paper No. 2006-01-0545 2006
- Chen, X. M. Shi M. F. McKune, P. M. Chen, S. M. “Applications of High Strength Steels in Hydroforming Dual Phase Vs. HSLA,” SAE Technical Paper 2001-01-1133 2001
- Green, D.E. Stoughton, T.B. 2004 ‘Evaluating hydroforming severity using stress-based forming limits,’ Proceedings North America Hydroforming Conference and Exhibition
- Auto/Steel Partnership Report “Formability Limits of Steel Tubes” 2004
- Chen, K-K. Chen, J. J. Chen, X. M. “Plane Strain Simulation For Corner Fill Of Hydroforming Tubes In Oversized Die,” SAE Technical Paper 2005-01-0093 2005
- Ji, W. “Validation of Math-Based Process for Hydroforming Dual Phase Steel Tubes,” SAE Technical Paper 2007-01-1691 2007
- Koganti, R. Kernosky, S. Angotti, S. van Riemsdijk, I. Nelson, R. Smith, J. “Bending Performance of Advanced High Strength Steel Tubes,” SAE Technical Paper 2009-01-0085 2009
- Koganti R. van Riemsdijk I. et al. “Influence of Lubricants on Advanced High Strength Steel Tubes in Bending Process” Proceedings of the IMECE09 International Mechanical Engineering Congress and Exposition 2009 Paper #: IMECE2009-13321
- AISI/DOE Technology Roadmap Program Final Report “Formability Characterization of a New Generation of High-Strength Steels” American Iron and Steel Institute March 2003
- Stange R.R. Tube and pipe bending: principles, methods, tooling, techniques, developments Tools for Bending Inc. 1997