Multi-rigid-flexible coupled modeling and blade dynamic contact excitation analysis of rotary vane compressor
LI Junxiao1，2, HE Zeyin1,3, TAO Ping’an3, DENG Gang3, MA Liying1
1.School of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
2.Chongqing Chuanyi Suda Electromechanical Co., Ltd.，Chongqing 400707，China；
3.Chongqing Automotive Thermal Management System Engineering Technology Research Center, Chongqing Construction Automotive Systems Co., Ltd., Chongqing 400052, China
Abstract：In order to reveal the dynamic contact excitation mechanism between blade, cylinder block and rotor of circular arc harmonic curve combined rotary vane compressor. Based on the rigid flexible coupling theory, a multi rigid flexible coupling dynamic model of compressor flexible blade, rigid rotor and cylinder block is established. The multi rigid flexible coupling dynamic characteristics of the rotary vane compressor are studied by coupling the measured data of the unit cavity pressure to the flexible blade in the form of mass free block, and the pressure of the back pressure chamber applied to the back of the blade as the mechanical boundary conditions. Then, based on the principle of equidistant curve envelope, the kinematics analysis model of compressor blade cylinder shape line is established, and the blade displacement / speed analytical value is obtained, which is compared with the rigid flexible coupling analysis value to verify the rationality of the rigid flexible coupling model. Furthermore, the influence of the parameters such as the back pressure and the back pressure on the blade structure is studied. The results show that the analytical values of blade displacement and velocity are in good agreement with the simulation values, which verifies the rationality of rigid flexible coupling modeling and constraint relationship of rotary vane compressor. In order to reduce the friction loss, the back pressure chamber pressure of the compressor should be controlled dynamically. The dynamic contact excitation force of blade can provide mechanical boundary data for vibration and noise prediction and control of subsequent rotary vane compressor.
李俊潇1，2，何泽银1,3，陶平安3，邓刚3，马丽英1. 旋叶式压缩机多刚柔耦合建模与叶片动态接触激励分析[J]. 振动与冲击, 2022, 41(5): 20-26.
LI Junxiao1，2, HE Zeyin1,3, TAO Ping’an3, DENG Gang3, MA Liying1. Multi-rigid-flexible coupled modeling and blade dynamic contact excitation analysis of rotary vane compressor. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(5): 20-26.
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