Engineering Mechanics

International Conference

Proceedings Vol. 20 (2014)


ENGINEERING MECHANICS 2014

20th INTERNATIONAL CONFERENCE
May 12 – 15, 2014, Svratka, Czech Republic
;
Editors: Vladimír Fuis

Copyright © 2014 Brno University of Technology Institute of Solid Mechanics, Mechatronics and Biomechanics

ISBN 978-80-214-4871-1 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

PRACTICAL IMPLEMENTATION OF SELECTED MEAN STRESS MODELS FOR RESULTS OF FATIGUE TESTS REALIZED FOR MINI SPECIMEN
Tomaszewski T., Sempruch J.
pages 710 - 713, full text

The cyclic properties of structural materials may be identified by means of mini specimens only. The method is limited by specimen geometry and test conditions. The mini specimens are characterised by low rigidity with a tendency to buckling. Within the range of stresses used, the tests may be based on a onesided cycle only, which eliminates compressive stress. It requires determination of symmetric stress cycles (R = -1) characteristics. An experimental σa-N curve for cycle with stress ratio R = 0.1 was determined based on mini specimen testing. The curve was further used to determine a curve for symmetric stress cycles R = -1 using selected mean stress models.


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Text and facts may be copied and used freely, but credit should be given to these Proceedings.

All papers were reviewed by members of the scientific committee.


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