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<p>Metal belts, as the core transmission components of continuously variable transmissions (CVT), have a service life that directly influences the reliability and efficiency of the transmission system. In this study, a domestically produced metal belt is selected as the research subject and modified using surface micro-texturing technology to investigate effective approaches for enhancing its service life. Finite element analysis and fatigue life prediction are performed on the metal belt before and after texturing using ANSYS Workbench and nCode Designlife software. The results indicate that under low-speed and heavy-load operating conditions, the maximum stress in the optimized metal element is reduced by 45.4 %, while the minimum fatigue life increases to 3.295 × 10<sup>4</sup> cycles. Wear testing further validates the accuracy of the simulation results: the micro-textured specimens exhibit only slight scratching, with a significantly lower degree of damage compared to the original counterparts, demonstrating superior wear resistance.</p>

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Fatigue life prediction and micro-texture optimization of CVT metal belt under multi-operational conditions

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Hongwei Xiang,
  • Tao Peng,
  • Shaoming Meng,
  • Guanyong Zhang,
  • Zhiming Wang

摘要

Metal belts, as the core transmission components of continuously variable transmissions (CVT), have a service life that directly influences the reliability and efficiency of the transmission system. In this study, a domestically produced metal belt is selected as the research subject and modified using surface micro-texturing technology to investigate effective approaches for enhancing its service life. Finite element analysis and fatigue life prediction are performed on the metal belt before and after texturing using ANSYS Workbench and nCode Designlife software. The results indicate that under low-speed and heavy-load operating conditions, the maximum stress in the optimized metal element is reduced by 45.4 %, while the minimum fatigue life increases to 3.295 × 104 cycles. Wear testing further validates the accuracy of the simulation results: the micro-textured specimens exhibit only slight scratching, with a significantly lower degree of damage compared to the original counterparts, demonstrating superior wear resistance.