A Study on the Multiaxial Fatigue Failure Criterion with Small Defects

    Volume 2, Issue 1

    ISSN: 2165-3992

    CODEN: MPCOAD

    Published Online: 11 October 2013

    Page Count: 20


    Yanase, K.
    Associate Professor, Dept. of Mechanical Engineering, Institute of Materials Science & Technology, Fukuoka Univ., Fukuoka City, Fukuoka

    (Received 1 April 2013; accepted 27 June 2013)

    Abstract

    This paper reexamines a multiaxial fatigue failure criterion in the presence of small defects. The criterion is based on the assumption that a Mode-I crack on a specified plane, termed a critical plane, plays a dominant role in the determination of fatigue strength. The present study extends previous research to propose a modified failure criterion in conjunction with a systematic computational scheme, and to conduct a detailed analysis of its predictive capability. Using the proposed computational scheme, the applied stress level for the multiaxial fatigue failure can be efficiently predicted for both in-phase and out-of-phase loadings. Additionally, a series of parametric studies was conducted to examine the material's sensitivity to the biaxial stress state with respect to the fatigue strength.


    Paper ID: MPC20130013

    DOI: 10.1520/MPC20130013

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    Author
    Title A Study on the Multiaxial Fatigue Failure Criterion with Small Defects
    Symposium , 0000-00-00
    Committee E08