The effect of cold forming residual stresses in local fatigue approaches: A numerical perspective

• Type: Article in International Scientific Journal
• Date: 2024

Authors

Souto, C (Author) Other; Parente, M (Author) Other; Correia, J (Author) FEUP; de Jesus, A (Author) Other

Journal

Title: Thin-Walled Structures

Vol. 205

ISSN: 0263-8231

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-017-234

DOI: 10.1016/j.tws.2024.112476

Abstract (EN): Thin-walled structures generally rely on cold-formed mild steel profiles. Due to cold forming, a significant formation of residual stresses impacts their overall fatigue behaviour. In this work, a state-of-the-art framework for fatigue life prediction is proposed and applied to both roll-formed and press-braked full-scale profiles. In summary, the profile's manufacturing process is numerically simulated to obtain a representative residual stress field. These results are then used as the initial state during a subsequent structural and fatigue analysis. A clear detrimental residual stress effect is verified. Importantly, however, is to note that prediction accuracy increases significantly when these effects are considered.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15