RT Journal Article
T1 Predictive analysis of wrinkling in shrink flanging using conventional versus incremental forming
A1 López-Fernández, J.A.
A1 Centeno, G.
A1 Silva, M.B.
A1 Vallellano, C.
K1 Materiales
K1 Procesos de fabricación
K1 Laminación (Trabajo de los metales)
K1 Deformaciones y tensiones
AB This work presents an experimental and numerical investigation of shrink flanging using Conventional Press Forming (CPF) and Single Point Incremental Forming (SPIF). Tests were carried out on aluminium AA2024-T3 sheets to identify failure modes, process windows, and formability limits under compressive loading. Finite Element simulations were developed for both processes, focusing on the evolution of in-plane stresses at the flange edge. A stress-based wrinkling criterion is stablished, and a process window is defined as a function of flange geometry. Results show that SPIF enhances formability and delays wrinkling compared to CPF. However, while CPF exhibits earlier wrinkling, certain cases allow wrinkle ironing, improving the final surface quality. A numerical criterion is introduced to detect wrinkling based on strain differences between the inner and outer surfaces of the sheet, enabling consistent identification of the wrinkling onset across geometries. A stress-based analysis reveals that the critical compressive stress required to initiate wrinkling is significantly lower in CPF and strongly dependent on flange length. Conversely, SPIF maintains a nearly constant wrinkling limit. Based on these findings, a process window was developed to support the selection of the most suitable forming strategy.
PB Elsevier
YR 2026
FD 2026
LK https://hdl.handle.net/10630/45290
UL https://hdl.handle.net/10630/45290
LA eng
NO J.A. López-Fernández, G. Centeno, M.B. Silva, C. Vallellano, Predictive analysis of wrinkling in shrink flanging using conventional versus incremental forming, International Journal of Solids and Structures, Volume 328, 2026, 113843, ISSN 0020-7683, https://doi.org/10.1016/j.ijsolstr.2026.113843.
NO Funding for open access charge: Universidad de Málaga / CBU
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 28 feb 2026