Abstract
This paper can be divided into two parts, which are numerical analysis and experimental equipment construction and testing.In numerical analysis, we mainly use the finite element method as our basis and MATLAB program design software as our tool, to write the numerical analysis program for a rotor-bearing system. This rotor-bearing system consists of rigid disks, distributed parameter finite rotor elements, and discrete bearings. During modeling of the system, the finite element model includes the effects of translation inertia, rotatory inertia, gyroscopic moments, and shear deformations. In order to verify the numerical analysis program, we choose to analyze the simple uniform rotor. We calculate and compare its natural frequencies, mode shapes, and critical speeds in bending with the theoretical results. After that, we further analyze a more complex system, which contains three disks and two bearings. The influences of the element number, the whirl frequency, the Campbell diagram, and the critical speed versus bearing stiffness diagram were studied.In experimental equipment construction and testing, we continue to progress on the RGT-3600 micro turbine and completed the related works of the equipment construction and testing. It includes the assembly of the hardware, the build of the measurement equipments, the construction of the sub-systems and the test of the sensor elements, the fuel supply, the fuel atomization, the fuel ignition, and the starting motor. We were able to get the micro turbine started properly and shut down safely. In addition, we accumulated many valuable experiences as well as test data.