摘要
燃气轮机装在工业发电、航空航海等国防装备领域有重要应用,转子系统作为燃气轮机的核心部件之一,其结构直接影响整机的性能、可靠性和寿命,使用燃机轴系工程等效模型能够加快动力学求解进程。基于应变能等效理论提出了燃气轮机转子系统工程等效约化建模方法,并结合相似设计理论得到了动力学特性原型机相似的缩比转子模型,计算了轴系的模态特性并开展了动力学升速试验,验证了工程等效约化建模方法的准确性。结果表明,所建立的工程等效约化模型与原型机前三阶固有频率偏差小于3.71%,前两阶临界转速偏差小于3.8%,预测结果准确。所提出的轴系工程等效约化建模方法在新型燃气轮机结构动力设计方面有广泛的应用前景。
Gas turbines have important applications in the fields of industrial power generation,aviation and navigation,and national defense equipment.As one of the core components of gas turbines,the rotor system directly affects the performance,reliability,and service life of the whole machine.The use of equivalent models of gas turbine shaft systems can accelerate the dynamic solution process.An engineering equivalent reduced modeling method for gas turbine rotor systems was proposed in this article based on strain energy equivalence theory,combining similar design theory to obtain a scaled rotor model with similar dynamic characteristics to the prototype.The modal characteristics of the shaft system were calculated and dynamic acceleration tests were carried out to verify the accuracy of the engineering equivalent reduced modeling method.The results indicate that the deviation of the first three natural frequencies of the established engineering equivalent model from the prototype is less than 3.71%,and the deviation of the first two critical speeds is less than 3.8%.The proposed rotor engineering equivalent modeling method has broad application prospects in the dynamic design of new gas turbine structures.
作者
赵润超
焦映厚
李治彤
徐业银
于广滨
郭宏伟
刘荣强
ZHAO Runchao;JIAO Yinghou;LI Zhitong;XU Yeyin;YU Guangbin;GUO Hongwei;LIU Rongqiang(School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China;School of Aerospace Engineering,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《振动与冲击》
北大核心
2025年第8期1-7,共7页
Journal of Vibration and Shock
基金
国家自然科学基金(12102319)
博士后科研启动经费(AUGA5710027424)
青海省重点研发与成果转化项目(2023-QY-215)
黑龙江省揭榜挂帅项目(2023ZXJ04A02)。
关键词
燃气轮机
转子动力学
等效约化建模方法
模态特性
gas turbine
rotor dynamics
equivalent reduced modeling method
modal characteristics
