DYNAMICS RESPONSE ANALYSIS AND MECHANICAL EXPERIMENTAL INVESTIGATION OF A DOUBLE-SPAN MULTI-SUPPORT SHAFT SYSTEM IN MICRO GAS TURBINES

被引：0

作者：

Lin, Hao ^{[1
]}

Song, Leiming ^{[1
]}

Geng, Haipeng ^{[2
]}

Feng, Sheng ^{[2
]}

Li, Ling ^{[1
]}

机构：

[1] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing, Peoples R China

[2] Xi An Jiao Tong Univ, Sch Mech Engn, Xian, Peoples R China

来源：

JOURNAL OF THEORETICAL AND APPLIED MECHANICS | 2025年 / 63卷 / 01期

基金：

北京市自然科学基金;

关键词：

micro gas turbine; double-span multi-support shaft system; dynamics analysis; unbalance response; experiment;

D O I：

10.15632/jtam-pl/195720

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This study delves into analysis of dynamics and experimentation concerning a double-span multi-support shaft system in micro gas turbines. Critical speed analysis was conducted, accompanied by numerical solutions providing insights into the natural frequency. Additionally, an unbalanced response and vibration amplitude of the shaft were calculated, serving as crucial inputs for dynamic balancing considerations. The study also examined the influence of stiffness coefficient variations in bearings on the unbalance response. Dynamic balancing experiments of the motor rotor and the compressor-turbine rotor were conducted separately. Then a vibration experiment for the double-span multi-support shaft was executed at an experimental speed of 60000 r/min. The research revealed that rotors could be regarded as rigid bodies throughout the operational speed range. This study holds significant engineering implications and a practical application value.

引用

页码：115 / 129

页数：15

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