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<p>This study constructed a principle-level experimental testing system for the Variable Stator Vane mechanism to investigate its dynamic performance under actual operating conditions, such as heavy loads and high temperatures. The experiment evaluated the impacts of joint clearance, a flexible component, and driving speed on the mechanism’s dynamic characteristics. Results validated the theoretical analysis, revealing that joint clearance and high driving speeds adversely affect vibrations, particularly during direction changes. Although the flexible rocker arm introduced some operational errors, it significantly reduced vibrations and improved stability. Additionally, experiments assessed the effects of varying radial loads and aerodynamic-thermal coupling on driving torque. The results indicated an approximately linear relationship between driving torque and radial load, with a 100&#xa0;N increase in radial force per vane resulting in a 0.05&#xa0;N·m increase in torque. Steady-state radial forces mitigated the negative effects of clearance but simultaneously exacerbated wear on the bushings. Notably, the influence of temperature on torque should not be overlooked, as drive torque increases considerably when the temperature rises to the point where joint clearance disappears.</p>

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Experimental study on dynamic performance of VSV principle-level mechanism considering load and temperature effects

  • 期刊论文

  • 发表日期：

    2025年7月20日

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  • Hongwei Zhang,
  • Zhong Luo,
  • Sibo Yao,
  • Chao Pang,
  • Haiyang Ji,
  • Chunyang Xu

摘要

This study constructed a principle-level experimental testing system for the Variable Stator Vane mechanism to investigate its dynamic performance under actual operating conditions, such as heavy loads and high temperatures. The experiment evaluated the impacts of joint clearance, a flexible component, and driving speed on the mechanism’s dynamic characteristics. Results validated the theoretical analysis, revealing that joint clearance and high driving speeds adversely affect vibrations, particularly during direction changes. Although the flexible rocker arm introduced some operational errors, it significantly reduced vibrations and improved stability. Additionally, experiments assessed the effects of varying radial loads and aerodynamic-thermal coupling on driving torque. The results indicated an approximately linear relationship between driving torque and radial load, with a 100 N increase in radial force per vane resulting in a 0.05 N·m increase in torque. Steady-state radial forces mitigated the negative effects of clearance but simultaneously exacerbated wear on the bushings. Notably, the influence of temperature on torque should not be overlooked, as drive torque increases considerably when the temperature rises to the point where joint clearance disappears.