拉杆转子端面齿刚度弱化对模态的影响及其验证  

Influence and Its Verification of Stiffness Weakening of End Teeth on Modal Characteristics of Central Tie-Rod Rotor

作　　者：张帅 ZHANG Shuai(Shanghai Electric Gas Turbine Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]上海电气燃气轮机有限公司,上海200240

出　　处：《热力透平》2023年第2期126-129,152,共5页Thermal Turbine

摘　　要：带有端面齿的中心拉杆式转子结构复杂,结构模化困难。在高速旋转状态下的各类受力改变了转子的接触状态,进而影响到接触界面的刚度特性。因此研究端面齿刚度弱化对转子模态特性的影响,并通过带有端面齿的中心拉杆结构的实验转子开展模态测试,验证了理论计算结果。研究成果可为今后的设计提供指导。The structure of central tie-rod rotor with end teeth is complex,and its modelling is difficult.The contact state of the rotor is changed by kinds of forces during high-speed rotation,and the stiffness characteristics of the contact interface are affected.Therefore,research on the influence of stiffness weakening of end teeth on rotor modal characteristics is carried out.The modal test for an experimental rotor of central tie-rod structure with end teeth is conducted,and the theoretical calculation results are verified.The research result can provide guidance for future design.

关 键 词：中心拉杆式转子 端面齿刚度弱化 模态实验 

分 类 号：TK474.7[动力工程及工程热物理—动力机械及工程]