Improvement of torsional fretting fatigue strength of splined shaft used for car air conditioner's compressor by hybrid joint

Masanobu Kubota, Kanetaka Miyazawa, Masato Miwa, Akihiro Tashiro, Tatsuro Aoki, Yoshiyuki Kondo

    Research output: Contribution to journalArticlepeer-review

    Abstract

    To improve the fretting fatigue strength of splined shaft used for compressor of car air conditioner, press-fit joint was combined with the spline joint. Torsional fretting fatigue strength of the combined jointed shaft was evaluated focusing on the effect of press-fit interference which must be secured when the combined joint is applied to the production process. Torsional fretting fatigue strength of the splined shaft was drastically increased by the combination of press-fit. The improvement was achieved by sharing transmitted torque between press-fit and spline. While fretting fatigue failure occurred at the press-fitted part when the press-fit interference was relatively small, the combined jointed shaft had four times higher fatigue strength than the conventional splined shaft. The increase of press-fit interference prevented the fretting fatigue failure and brought further increase of the fatigue strength, since amount of relative slip was significantly reduced by the increase of contact pressure.

    Original languageEnglish
    Pages (from-to)208-217
    Number of pages10
    JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
    Volume77
    Issue number773
    DOIs
    Publication statusPublished - 2011

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering

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