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A fast, versatile fatigue post-processor and criteria evaluation
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-8068-2360
2005 (English)In: International Journal of Fatigue, ISSN 0142-1123, E-ISSN 1879-3452, Vol. 27, no 10-12, 1335-1341 p.Article in journal (Refereed) Published
Abstract [en]

This paper is concerned with the development and use of a general High Cycle Fatigue (HCF) post-processor, FAST, Fatigue AnalysiS Tool. It is used to evaluate and develop HCF criteria. FAST can handle many kinds of criteria and evaluate them with fatigue test results from both standard test specimens and actual components. When a reliable criterion exists, FAST will be used for design purposes. The principles of FAST are outlined and an example is given where seven local multiaxial stress based criteria are evaluated, along with the commercial fatigue post-processor Femfat. The conclusion is that a correct treatment of the volume or stress gradient effect is more important than the choice of criterion.

Place, publisher, year, edition, pages
2005. Vol. 27, no 10-12, 1335-1341 p.
Keyword [en]
high cycle fatigue, multiaxial fatigue, fatigue design, finite elements, fatigue criteria
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-6020DOI: 10.1016/j.ijfatigue.2005.07.011ISI: 000233487300027Scopus ID: 2-s2.0-27144444337OAI: oai:DiVA.org:kth-6020DiVA: diva2:10594
Note
QC 20101122Available from: 2006-06-25 Created: 2006-06-25 Last updated: 2010-11-22Bibliographically approved
In thesis
1. Prediction of the fatigue limit: accuracy of post-processing methods
Open this publication in new window or tab >>Prediction of the fatigue limit: accuracy of post-processing methods
2006 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

Several fatigue criteria were evaluated with experimental fatigue test data. The fatigue tests contained many different geometries with different degrees of stress concentration. It was concluded that the differences between the criteria were neglectable when compared to the differences between the specimens. The stress concentrations with the stress gradients and sizes of the highly stresses volumes that resulted were very important. In order to understand this, gradient and volume methods were investigated. The gradient methods showed some improvement over the strictly local evaluation first attempted. The volume method, a weakest link application with a Weibull distribution of the fatigue strength, yielded results useable for actual design situations. The volume method is strongly recommended and the choice of criterion does not seem to be very important.

Place, publisher, year, edition, pages
Stockholm: KTH, 2006. viii, 8 p.
Series
Trita-HFL. Report / Royal Institute of Technology, Solid Mechanics, ISSN 1654-1472 ; 0409
National Category
Other Materials Engineering
Identifiers
urn:nbn:se:kth:diva-4061 (URN)
Presentation
2006-06-02, Sal E2, KTH, Lindstedtsvägen 3, Stockholm, 10:15
Opponent
Supervisors
Note

QC 20101122

Available from: 2006-06-25 Created: 2006-06-25 Last updated: 2013-01-15Bibliographically approved

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