Journal
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
Volume -, Issue -, Pages -Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15397734.2023.2234472
Keywords
Thermal environment; multiple friction interface; coupling effect; vibration
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This study proposes a method to investigate the coupling effect of multi-interface blades on nonlinear vibrations. The dynamics of a pre-twisted tenon jointed blade with under-platform dampers in a thermal environment is modeled, considering the combined effects of thermal effects and nonlinear loads. A friction model of the tenon and under-platform dampers contact interface is developed. The effects of natural frequency, temperature, rotational speed, and pre-twisted angle on blade vibration characteristics and nonlinear characteristics are analyzed while studying the coupling effect of multiple friction interfaces.
This study proposes a method to study blades with multiple friction interfaces, to reveal the coupling effect of multi-interface blades on nonlinear vibrations. The dynamics of a pre-twisted tenon jointed blade with under-platform dampers in a thermal environment is modeled, considering the combined effects of thermal effects and nonlinear loads. Subsequently, a friction model of the tenon and under-platform dampers contact interface is developed. While studying the coupling effect of multiple friction interface, the effects of natural frequency, temperature, rotational speed and pre-twisted angle on blade vibration characteristics and nonlinear characteristics are analyzed.
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