CAJ | 학술논문

针对燃气轮机转子在启停暂态及变工况下的振动过大问题，建立了转子瞬态动力学特性理论分析模型，基于转子热变形现象将转子热变形等效为弯曲激励力，分析了转子在热变形激励下快速启动过程的瞬态响应特性、热变形与不平衡耦合激励下的转子在不同启动过程中的瞬态动力学特性，以及热变形随启动过程衰减的转子瞬态动力学特性，研究成果为燃气轮机转子热致振动特性研究提供理论依据与基础。
침대연기륜궤전자재계정잠태급변공황하적진동과대문제，건립료전자순태동역학특성이론분석모형，기우전자열변형현상장전자열변형등효위만곡격려력，분석료전자재열변형격려하쾌속계동과정적순태향응특성、열변형여불평형우합격려하적전자재불동계동과정중적순태동역학특성，이급열변형수계동과정쇠감적전자순태동역학특성，연구성과위연기륜궤전자열치진동특성연구제공이론의거여기출。
Aiming at larger vibration problems of gas turbine rotor in transition states,the transient rotor dynamic model was established.The thermal deformation of the rotor was equivalent to the bending excitation force based on the analysis of rotor thermal deformation.The transient response characteristics of the rotor under the bending excitation force in the process of fast start-up,those under thermal deformation and unbalanced coupling excitation,and the transient response characteristics of the rotor with thermal deformation decaying in the start-up process were analyzed.The study results provided a theoretical basis for studying gas turbine rotor thermal-induced vibration characteristics.