Temperature distribution in teech and blanks of ultra-high-speed gears (2nd report, calculation of temperature distribution in teeth and blanks)

Yasuyoshi Tozaki, Susumu Matsumoto, Masatoshi Fukutomi

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Currently in industries, high-speed turbo machineries such as compressors and steam or gas turbines are required to have increased power capacities. Due to this, a large gear size is required which leads to nonuniform temperature distribution. As the result of nonuniform temperature distribution, nonuniform thermal distortion occurs. Change in load distribution due to this thermal distortion is considered to be closely related to scoring and pitting failures. In order to ensure reliability of high-speed gear units, it is necessary to improve the following techniques. (1) The method of predicting the temperature rise of gears and thermal distortion. (2) Tooth correction against thermal distortion. In this paper, a three-dimensional model for calculating the temperature of teeth surfaces and blanks is presented. This model includes the effects of convective cooling by lubricating oil and the change in load distribution due to mechanical deformation. The calculated results of gear teeth temperature and bending stress are in reasonable agreement with the experimental results. It is confirmed that the analytical method is practical and useful.

    Original languageEnglish
    Pages (from-to)210-216
    Number of pages7
    JournalJSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing
    Volume44
    Issue number1
    DOIs
    Publication statusPublished - 2001

    Fingerprint

    Gears
    Temperature distribution
    Gear teeth
    Lubricating oils
    Steam turbines
    Pitting
    Temperature
    Gas turbines
    Compressors
    Cooling
    Hot Temperature
    Industry

    Keywords

    • Bending
    • Calculation
    • Gear
    • Machine element
    • Temperature distribution

    ASJC Scopus subject areas

    • Industrial and Manufacturing Engineering
    • Mechanical Engineering

    Cite this

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    abstract = "Currently in industries, high-speed turbo machineries such as compressors and steam or gas turbines are required to have increased power capacities. Due to this, a large gear size is required which leads to nonuniform temperature distribution. As the result of nonuniform temperature distribution, nonuniform thermal distortion occurs. Change in load distribution due to this thermal distortion is considered to be closely related to scoring and pitting failures. In order to ensure reliability of high-speed gear units, it is necessary to improve the following techniques. (1) The method of predicting the temperature rise of gears and thermal distortion. (2) Tooth correction against thermal distortion. In this paper, a three-dimensional model for calculating the temperature of teeth surfaces and blanks is presented. This model includes the effects of convective cooling by lubricating oil and the change in load distribution due to mechanical deformation. The calculated results of gear teeth temperature and bending stress are in reasonable agreement with the experimental results. It is confirmed that the analytical method is practical and useful.",
    keywords = "Bending, Calculation, Gear, Machine element, Temperature distribution",
    author = "Yasuyoshi Tozaki and Susumu Matsumoto and Masatoshi Fukutomi",
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    TY - JOUR

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    AU - Tozaki, Yasuyoshi

    AU - Matsumoto, Susumu

    AU - Fukutomi, Masatoshi

    PY - 2001

    Y1 - 2001

    N2 - Currently in industries, high-speed turbo machineries such as compressors and steam or gas turbines are required to have increased power capacities. Due to this, a large gear size is required which leads to nonuniform temperature distribution. As the result of nonuniform temperature distribution, nonuniform thermal distortion occurs. Change in load distribution due to this thermal distortion is considered to be closely related to scoring and pitting failures. In order to ensure reliability of high-speed gear units, it is necessary to improve the following techniques. (1) The method of predicting the temperature rise of gears and thermal distortion. (2) Tooth correction against thermal distortion. In this paper, a three-dimensional model for calculating the temperature of teeth surfaces and blanks is presented. This model includes the effects of convective cooling by lubricating oil and the change in load distribution due to mechanical deformation. The calculated results of gear teeth temperature and bending stress are in reasonable agreement with the experimental results. It is confirmed that the analytical method is practical and useful.

    AB - Currently in industries, high-speed turbo machineries such as compressors and steam or gas turbines are required to have increased power capacities. Due to this, a large gear size is required which leads to nonuniform temperature distribution. As the result of nonuniform temperature distribution, nonuniform thermal distortion occurs. Change in load distribution due to this thermal distortion is considered to be closely related to scoring and pitting failures. In order to ensure reliability of high-speed gear units, it is necessary to improve the following techniques. (1) The method of predicting the temperature rise of gears and thermal distortion. (2) Tooth correction against thermal distortion. In this paper, a three-dimensional model for calculating the temperature of teeth surfaces and blanks is presented. This model includes the effects of convective cooling by lubricating oil and the change in load distribution due to mechanical deformation. The calculated results of gear teeth temperature and bending stress are in reasonable agreement with the experimental results. It is confirmed that the analytical method is practical and useful.

    KW - Bending

    KW - Calculation

    KW - Gear

    KW - Machine element

    KW - Temperature distribution

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