International Journal of Innovation and Applied Studies
ISSN: 2028-9324     CODEN: IJIABO     OCLC Number: 828807274     ZDB-ID: 2703985-7
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In Press: An investigation on effect of mean stress on bending fatigue failures of compressor valve reeds


Kévin M. Tsapi Tchoupou1, Bertin D. Soh Fotsing2, and Desire Ndjanfang3

1 Department of Petroleum Engineering, National Higher Polytechnic Institute, University of Bamenda, P.O. Box 39 Bambili, Cameroon
2 Department of Mechanical Engineering, Bandjoun University Institute of Technology, University of Dschang, P.O. Box 134 Bandjoun, Cameroon
3 Department of Mechanical and Industrial Engineering, National Higher Polytechnic Institute, University of Bamenda, P.O. Box 39 Bambili, Cameroon

Original language: English

Received 14 December 2020

Copyright © 2021 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Reed valves in a compressor are critical parts that have a high fatigue failure potential due to cyclic bending and impact caused by the cyclic nature of the compression process. A sudden failure of a valve renders the compressor useless. Although the refining process of methods of fatigue design has already taken more than 50 years, older criteria such as Gerber and Goodman models are still attractive for engineering design of high cycle fatigue components. This paper presents an investigation on the effect of nonzero mean stress on the design of valve reeds that are widely used in compressors. The investigation relates the choice of a mean stress compensation models, with the predicted fluctuating bending fatigue strength and estimated safety coefficient values. The calculations have been performed using Gerber, Goodman, Soderberg, ASME, Crossland, and Tsapi-Soh models. The most relevant goal of this paper is to verify the efficiency of classical and advanced stress based multiaxial fatigue criteria to estimated value of fluctuating bending fatigue strength. The criterion proposed by Tsapi-Soh was found to gives estimated value of the fluctuating bending fatigue strength very close to the typical value from technical data and satisfying results in predicting the survival of the reed valves under bending fatigue failure.

Author Keywords: Mean stress effect, fatigue limit, fatigue criteria, safety coefficient, sandvik.