Modelling of Stress Evolution and Its Effect on Formability in Tension Under Cyclic Bending Plus Compression

Peng, Wenxuan; Ou, Hengan

Abstract

Single point incremental forming (SPIF) and Double-sided incremental forming (DSIF) are two main variants of incremental sheet forming (ISF) processes. Tension under cyclic bending (TCB) have been developed as a means for experimental evaluation and validation of the SPIF process and further extended to DSIF process by adding a compression force (TCBC) in recent years. In this study, an analytical model is proposed to capture the localised deformation and stress evolutions due to bending, reverse-bending and additional compression in TCB and TCBC tests as a simplification of SPIF and DSIF processes. The results show the through-thickness stress variation has determinative influence on fracture initiation. The effects of test parameters and their interactions on formability were evaluated. Although the surface contact deformation and material thinning are simplified in the analytical model, the results obtained are comparable to experimental testing and finite element (FE) simulations. This work shows that the analytical model can be used as an effective means to decouple the complex deformation modes and local stress evolutions of TCB and TCBC and to provide a new insight into SPIF and DSIF processes.

Citation

Peng, W., & Ou, H. (2023, September). Modelling of Stress Evolution and Its Effect on Formability in Tension Under Cyclic Bending Plus Compression. Presented at 14th International Conference on the Technology of Plasticity, Cannes, France

• Presentation Conference Type: Edited Proceedings
• Conference Name: 14th International Conference on the Technology of Plasticity
• Start Date: Sep 24, 2023
• End Date: Oct 29, 2023
• Acceptance Date: May 25, 2023
• Online Publication Date: Aug 23, 2023
• Publication Date: 2024
• Deposit Date: Nov 21, 2023
• Publicly Available Date: Aug 24, 2024
• Publisher: Springer Verlag
• Pages: 713-721
• Series Title: Lecture Notes in Mechanical Engineering
• Series ISSN: 2195-4364
• Book Title: Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology o
• ISBN: 978-3-031-41022-2
• DOI: https://doi.org/10.1007/978-3-031-41023-9_71
• Keywords: Bending under tension and compression; Incremental sheet forming; Modelling; Formability
• Public URL: https://nottingham-repository.worktribe.com/output/27590406
• Publisher URL: https://link.springer.com/chapter/10.1007/978-3-031-41023-9_71
• Additional Information: First Online: 23 August 2023; Conference Acronym: ICTP; Conference Name: International Conference on the Technology of Plasticity; Conference City: Mandelieu-La; Conference Country: France; Conference Year: 2023; Conference Start Date: 24 September 2023; Conference End Date: 29 September 2023; Conference ID: ictp2023; Conference URL: https://www.ictp2023.org/en/