|
|
|
| Dynamic Modeling and Critical Speed Calculation of Gas Turbine Rod Fastening Rotor |
| WANG Shao-Bo, MENG Cheng, SU Ming |
| (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
|
|
|
|
Abstract Rod fastening rotor is usually used in heavy duty gas turbine rotor-support system, of which critical speed calculation differs from that of the integral rotor. In the framework of Riccati transfer matrix method, discretization of central tie-rod fastening rotor structure with detailed analysis was conducted. Taking into account the impacts which are brought by bearing support and meshing face tooth on dynamic characteristics of rotor system, a computation model of rotor-support system was further established. In this way, critical speeds and the corresponding modes were obtained.The calculated result shows a good agreement with the test measurement result, which implies that the method is accurate and computation model is reliable. This approach can also be applied to analyze dynamic characteristics of rotors with homogenous structure.
|
|
Received: 13 April 2012
Published: 28 March 2013
|
|
|
|
|
|
| [1] |
WEI Chen-Yu, ZANG Shu-Sheng, GE Bing, PU Qiang. Experimental Investigation on Off-Design Performance of Small-Size Humid Air Turbine Cycle[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(03): 346-351. |
| [2] |
LIU Hai-Jian-a, 欧Yang-Hua-a , WU Ya-Dong-b, TIAN Jie-a, DU Chao-Hui-a. Numerical and Experimental Investigation of Unsteady Flows aboutRotor-Stator Interaction for Stator Lean Effects[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(03): 358-363. |
|
|
|
|
