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<p>High-speed rotating equipment may vibrate due to variable point loads and dynamic loads, affecting reliability, performance, and safety. Squeeze film dampers are often used to reduce rotor vibration and achieve system stability (SFDs). This study aims to test SFDs for reducing high-speed rotor vibrations in circumstances with changing point loads. In the paper,the dynamic behavior of a variable-point-loaded high-speed rotor system was investigated through experiments. A comprehensive literature review establishes the theoretical underpinnings and techniques for rotor dynamics and SFD technology. The use of theoretical models aids in the setup of experiments and the interpretation of findings. A unique experimental test setup is designed to represent high-speed rotor systems with variable point loads. This testing apparatus contains movable loading mechanisms. Ten, twenty, thirty, forty, and fifty centimetres are the loads from the shaft terminal support. Three oil samples were used to collect experimental data between 2500 and 10,500&#xa0;rpm. The oil pressure supplied was 5&#xa0;bar for the testing. After every placement, the vibration amplitudes along the x and z axes are measured using SFD integration and precise equipment. The SFD-equipped rotor system is assessed using vibration levels under different loading conditions, both with and without the damper. According to the study, a significant factor influencing shaft vibrations is the distance between the point load and the terminal support. When loads are closer together than when they are further apart—especially when the loads are positioned longer than the main shaft—the vibration amplitude is larger in the closer loads. Rotor vibration is continuously lowered by the SFDs. SFD dampers continuously lower the rotor vibration magnitudes. The setup of the research demonstrates the effect of control on rotor parameters by SFD and oil viscosity. This illustrates how the Self-Contained Fluid Drive and oil viscosity control may affect the rotor system vibrations. Enhancement of the durability and functionality of the system has also been proposed in the research. It also offers suggestions for enhancing the system’s durability and functionality.</p>

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Dynamic Response Experimental Analysis of High-Speed Rotors Equipped with Squeeze Film Dampers Under Varied Point Loading Conditions

  • 期刊论文

  • 发表日期：

    2025年3月27日

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  • Ratnesh Kumar Gupta,
  • Ramesh Chandra Singh

摘要

High-speed rotating equipment may vibrate due to variable point loads and dynamic loads, affecting reliability, performance, and safety. Squeeze film dampers are often used to reduce rotor vibration and achieve system stability (SFDs). This study aims to test SFDs for reducing high-speed rotor vibrations in circumstances with changing point loads. In the paper,the dynamic behavior of a variable-point-loaded high-speed rotor system was investigated through experiments. A comprehensive literature review establishes the theoretical underpinnings and techniques for rotor dynamics and SFD technology. The use of theoretical models aids in the setup of experiments and the interpretation of findings. A unique experimental test setup is designed to represent high-speed rotor systems with variable point loads. This testing apparatus contains movable loading mechanisms. Ten, twenty, thirty, forty, and fifty centimetres are the loads from the shaft terminal support. Three oil samples were used to collect experimental data between 2500 and 10,500 rpm. The oil pressure supplied was 5 bar for the testing. After every placement, the vibration amplitudes along the x and z axes are measured using SFD integration and precise equipment. The SFD-equipped rotor system is assessed using vibration levels under different loading conditions, both with and without the damper. According to the study, a significant factor influencing shaft vibrations is the distance between the point load and the terminal support. When loads are closer together than when they are further apart—especially when the loads are positioned longer than the main shaft—the vibration amplitude is larger in the closer loads. Rotor vibration is continuously lowered by the SFDs. SFD dampers continuously lower the rotor vibration magnitudes. The setup of the research demonstrates the effect of control on rotor parameters by SFD and oil viscosity. This illustrates how the Self-Contained Fluid Drive and oil viscosity control may affect the rotor system vibrations. Enhancement of the durability and functionality of the system has also been proposed in the research. It also offers suggestions for enhancing the system’s durability and functionality.