A critical analysis of the plasticity correction factors proposed in the EN13445 standard for fatigue analysis of unwelded material

• Type: Article in International Conference Proceedings Book
• Date: 2006

Authors

Pereira, HFSG (Author) Other; Ribeiro, AS (Author) Other; De Jesus, AMP (Author) Other; Fernandes, AA (Author) FEUP

Conference proceedings International

Title: American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

ASME PVP2006/ICPVT-11 Conference

Vancouver, BC, 23 July 2006 through 27 July 2006

Indexing

ISI Web of Knowledge

Scopus - 1 Citation

Other information

Authenticus ID: P-007-GMJ

DOI: 10.1115/pvp2006-icpvt-11-94030

Abstract (EN): This paper presents a preliminary investigation about the plasticity correction factor, Ke, proposed in the Part 3- Clause 18 of the EN13445 standard, for correction of the elastic stress ranges exceeding twice the yield stress, resulting from mechanical loading. The plasticity correction factors are re-analyzed using a calculation strategy based on a comparison between results from fully-elastic and elastoplastic analyses. Several materials, elastoplastic models and geometries are considered in the study. The analyses revealed, for an important number of the situations, non-conservative results for Ke calculated according to the standard, which suggests the need for improvements in the standard procedures. However, more intensive research will be carried out to support these preliminary results. Nevertheless, authors recommend that a greater emphasis should be dedicated in the standard to the elastoplastic analysis, since the fatigue resistance data presented in the standard is strain-life type data. The elastoplastic analysis should be the preferred approach for evaluation of the strains/stresses for fatigue analysis. Copyright © 2006 by ASME.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10