Calculation of the fatigue life of a surface-hardened shaft by the finite-element method

Heikki Keinänen, Klaus Rahka

    Research output: Book/ReportReport

    Abstract

    This report addresses the problems encountered in machine component design when the material properties vary in the load carrying cross-section and when purely elastic design is unsuitable that is when fatigue may be an imminent failure mechanism. The problem encountered is solved by an elasto-plastic finite-element calculation for the surface hardened cylindrical SAE shaft in bending, torsion and combined bending torsion. The effective plastic strains in the cross section of me shaft are calculated and the fatigue life of the shaft is predicted according to the local strain approach. The analysed shaft is surface hardened by induction heating, the hardness and other material properties thus varying between me core and the surface. The loading is bending or torsion. Only the monotonic first quarter cycle of me loading is calculated. The fatigue life is evaluated using the calculated effective plastic strain amplitude.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages27
    ISBN (Print)951-38-4070-0
    Publication statusPublished - 1992
    MoE publication typeNot Eligible

    Publication series

    SeriesVTT Publications
    Number92
    ISSN1235-0621

    Fingerprint

    Torsional stress
    Bending (forming)
    Fatigue of materials
    Finite element method
    Plastic deformation
    Materials properties
    Bending (deformation)
    Induction heating
    Machine components
    Hardness
    Plastics

    Keywords

    • shafts (machine elements)
    • surface hardening
    • fatigue
    • failure
    • fatigue life
    • predictions
    • finite element analysis
    • bending
    • torsion
    • strains

    Cite this

    Keinänen, H., & Rahka, K. (1992). Calculation of the fatigue life of a surface-hardened shaft by the finite-element method. Espoo: VTT Technical Research Centre of Finland. VTT Publications, No. 92
    Keinänen, Heikki ; Rahka, Klaus. / Calculation of the fatigue life of a surface-hardened shaft by the finite-element method. Espoo : VTT Technical Research Centre of Finland, 1992. 27 p. (VTT Publications; No. 92).
    @book{b8f3fe9c0afb4132895fd716f5767ce7,
    title = "Calculation of the fatigue life of a surface-hardened shaft by the finite-element method",
    abstract = "This report addresses the problems encountered in machine component design when the material properties vary in the load carrying cross-section and when purely elastic design is unsuitable that is when fatigue may be an imminent failure mechanism. The problem encountered is solved by an elasto-plastic finite-element calculation for the surface hardened cylindrical SAE shaft in bending, torsion and combined bending torsion. The effective plastic strains in the cross section of me shaft are calculated and the fatigue life of the shaft is predicted according to the local strain approach. The analysed shaft is surface hardened by induction heating, the hardness and other material properties thus varying between me core and the surface. The loading is bending or torsion. Only the monotonic first quarter cycle of me loading is calculated. The fatigue life is evaluated using the calculated effective plastic strain amplitude.",
    keywords = "shafts (machine elements), surface hardening, fatigue, failure, fatigue life, predictions, finite element analysis, bending, torsion, strains",
    author = "Heikki Kein{\"a}nen and Klaus Rahka",
    note = "Project code: MET00041",
    year = "1992",
    language = "English",
    isbn = "951-38-4070-0",
    series = "VTT Publications",
    publisher = "VTT Technical Research Centre of Finland",
    number = "92",
    address = "Finland",

    }

    Keinänen, H & Rahka, K 1992, Calculation of the fatigue life of a surface-hardened shaft by the finite-element method. VTT Publications, no. 92, VTT Technical Research Centre of Finland, Espoo.

    Calculation of the fatigue life of a surface-hardened shaft by the finite-element method. / Keinänen, Heikki; Rahka, Klaus.

    Espoo : VTT Technical Research Centre of Finland, 1992. 27 p. (VTT Publications; No. 92).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - Calculation of the fatigue life of a surface-hardened shaft by the finite-element method

    AU - Keinänen, Heikki

    AU - Rahka, Klaus

    N1 - Project code: MET00041

    PY - 1992

    Y1 - 1992

    N2 - This report addresses the problems encountered in machine component design when the material properties vary in the load carrying cross-section and when purely elastic design is unsuitable that is when fatigue may be an imminent failure mechanism. The problem encountered is solved by an elasto-plastic finite-element calculation for the surface hardened cylindrical SAE shaft in bending, torsion and combined bending torsion. The effective plastic strains in the cross section of me shaft are calculated and the fatigue life of the shaft is predicted according to the local strain approach. The analysed shaft is surface hardened by induction heating, the hardness and other material properties thus varying between me core and the surface. The loading is bending or torsion. Only the monotonic first quarter cycle of me loading is calculated. The fatigue life is evaluated using the calculated effective plastic strain amplitude.

    AB - This report addresses the problems encountered in machine component design when the material properties vary in the load carrying cross-section and when purely elastic design is unsuitable that is when fatigue may be an imminent failure mechanism. The problem encountered is solved by an elasto-plastic finite-element calculation for the surface hardened cylindrical SAE shaft in bending, torsion and combined bending torsion. The effective plastic strains in the cross section of me shaft are calculated and the fatigue life of the shaft is predicted according to the local strain approach. The analysed shaft is surface hardened by induction heating, the hardness and other material properties thus varying between me core and the surface. The loading is bending or torsion. Only the monotonic first quarter cycle of me loading is calculated. The fatigue life is evaluated using the calculated effective plastic strain amplitude.

    KW - shafts (machine elements)

    KW - surface hardening

    KW - fatigue

    KW - failure

    KW - fatigue life

    KW - predictions

    KW - finite element analysis

    KW - bending

    KW - torsion

    KW - strains

    M3 - Report

    SN - 951-38-4070-0

    T3 - VTT Publications

    BT - Calculation of the fatigue life of a surface-hardened shaft by the finite-element method

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Keinänen H, Rahka K. Calculation of the fatigue life of a surface-hardened shaft by the finite-element method. Espoo: VTT Technical Research Centre of Finland, 1992. 27 p. (VTT Publications; No. 92).