Vibration analysis and experiment on transmission system of the rotor test rig
SU Xun-wen 1，LIU Jin-hao 1，WANG Shao-ping 2
1.School of Technology, Beijing Forestry University, Beijing 100083，China；2.School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191，China；
Abstract：Transfer Matrix Method(TMM) was used to analyze the vibration characteristics of the helicopter test rig. The torsional vibration natural frequencies and the modal shapes were obtained; Furthermore, each order natural frequency and the relationship between the lateral vibration and the supported stiffness of the test rig transmission were obtained. By experiment, three axial vibrations were measured. After the rotor ran over the resonance of the test rig to speed of 960rpm, the test rig would have been in steady run for about 2-3 seconds then the vibration went to diverge. That frequency of the spindle speed leading to vibration divergence was just right the 1st order natural frequency of the lateral vibration. Based on the vibration analysis, it was concluded that the vibration divergence was related to the supported stiffness of the transmission, and two methods on dealing with this malfunction were given.
苏勋文;刘晋浩;王少萍. 旋翼试验台传动系统振动分析与实验[J]. , 2014, 33(16): 177-182.
SU Xun-wen;LIU Jin-hao;WANG Shao-ping . Vibration analysis and experiment on transmission system of the rotor test rig. , 2014, 33(16): 177-182.
2014, Vol. 33 
