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Fatigue Analysis of PTO Gearboxes in Paddy Power Chassis Using Measured Loads

Author

Listed:
  • Jianfei He

    (Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
    State Key Laboratory of Agricultural Equipment Technology, Guangzhou 510642, China)

  • Zaiman Wang

    (Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
    State Key Laboratory of Agricultural Equipment Technology, Guangzhou 510642, China)

  • Bo Gao

    (Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
    State Key Laboratory of Agricultural Equipment Technology, Guangzhou 510642, China)

  • Dongyang Yu

    (Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
    State Key Laboratory of Agricultural Equipment Technology, Guangzhou 510642, China)

  • Yifan Ma

    (Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
    State Key Laboratory of Agricultural Equipment Technology, Guangzhou 510642, China)

  • Wenneng Zhong

    (Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
    State Key Laboratory of Agricultural Equipment Technology, Guangzhou 510642, China)

  • Zhihao Zeng

    (Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
    State Key Laboratory of Agricultural Equipment Technology, Guangzhou 510642, China)

  • Ziyou Guo

    (Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
    State Key Laboratory of Agricultural Equipment Technology, Guangzhou 510642, China)

  • Jun Wang

    (Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
    State Key Laboratory of Agricultural Equipment Technology, Guangzhou 510642, China)

Abstract

This study aims to analyze the fatigue life of a PTO (power take-off) gearbox used in a paddy field power chassis. The analysis considers factors such as stress concentration, dimensions, surface quality, and load characteristics affecting fatigue life. A finite element simulation was conducted using the Ansys 2022 software to identify the critical point of the PTO shell. The modified nominal stress fatigue analysis method, incorporating a stress adjustment coefficient, was employed to derive the modified S-N curve. Combined with the measured load data of the PTO bench operation, the load data and the 3D model of the PTO shell were imported into the fatigue analysis software n-code to analyze the fatigue life of the PTO gearbox of a paddy field power chassis and compare it with the prediction results from the traditional stress field strength method. The findings indicate that the optimized stress adjustment coefficient method predicts a fatigue life (31,699 h) closer to the actual operational life (20,000 h) compared to the traditional method (39,151 h). This research contributes to the advancement of the analytical techniques for predicting fatigue life in critical components of agricultural machinery.

Suggested Citation

  • Jianfei He & Zaiman Wang & Bo Gao & Dongyang Yu & Yifan Ma & Wenneng Zhong & Zhihao Zeng & Ziyou Guo & Jun Wang, 2024. "Fatigue Analysis of PTO Gearboxes in Paddy Power Chassis Using Measured Loads," Agriculture, MDPI, vol. 14(9), pages 1-19, August.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:9:p:1436-:d:1462412
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