Mode I Stress Intensity Factors for Surface Planar Cracks in Circular Bodies Under Rotary Bending

Roman Król , Paweł Grabowski

Abstract

A method of calculating stress intensity factors, using point-load weight function, for twodimensional surface cracks subjected to rotary bending, applied to circular objects is described in the paper. The research has regarded planar cracks in finite circular bodies, which may occur e.g. in shaft cross sections of belt-driven machines. This type of drive is widely spread in the technological lines, therefore the research on improving its fatigue durability is crucial for development of this branch of industry. One of a few advantages of the method which has been applied is the possibility to evaluate stress intensity factor (SIF) values precisely in a quick and simple way. The paper shows the computation for various parameters of shape and size of shafts and cracks. The presented method usually yields conservative results compared to reference values obtained for the same configurations with the finite element method, which gives a good perspective to use such calculated SIFs for life assessment. Checking of these possibility is an essential issue of the work described in the paper.
Author Roman Król IMRC
Roman Król,,
- The Institute of Construction Machinery Engineering
, Paweł Grabowski IMRC
Paweł Grabowski,,
- The Institute of Construction Machinery Engineering
Journal seriesMachine Dynamics Research, ISSN 2080-9948
Issue year2016
Vol40
No4
Pages19-31
Publication size in sheets0.6
Keywords in Englishstress intensity factor; weight function; rotary bending; fatigue crack growth
URL http://mdr.simr.pw.edu.pl/index.php/MDR/article/view/204
Languageen angielski
Score (nominal)14
ScoreMinisterial score = 14.0, 29-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 14.0, 29-11-2017, ArticleFromJournal
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