旋叶式压缩机多刚柔耦合建模与叶片动态接触激励分析  

Multi-rigid-flexible coupled modeling and blade dynamic contact excitation analysis of rotary vane compressor

作　　者：李俊潇 何泽银[1,3] 陶平安 邓刚 马丽英 LI Junxiao;HE Zeyin;TAO Ping’an;DENG Gang;MA Liying(School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Chuanyi Suda Electromechanical Co.,Ltd.,Chongqing 400707,China;Chongqing Automotive Thermal Management System Engineering Technology Research Center,Chongqing Construction Automotive Systems Co.,Ltd.,Chongqing 400052,China)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074 [2]重庆川仪速达机电有限公司,重庆400707 [3]重庆建设汽车系统股份有限公司重庆市汽车热管理系统工程技术研究中心,重庆400052

出　　处：《振动与冲击》2022年第5期20-26,共7页Journal of Vibration and Shock

基　　金：重庆市技术创新与应用发展专项(cstc2019jscx-msxmX0038);重庆市自然科学基金(cstc2019jcyj-msxmX0799)。

摘　　要：为揭示圆弧-简谐曲线组合型旋叶式压缩机叶片与缸体、转子间的动态接触激励机理,基于刚柔耦合理论,建立压缩机柔性叶片、刚性转子与缸体多刚柔耦合动力学模型。将基元腔压力测试数据以无质量块形式耦合至柔性叶片、背压腔压力施加于叶片背部作为力学边界条件,研究旋叶式压缩机多刚柔耦合动力学特性;而后,基于等距曲线包络原理建立压缩机叶片-缸体型线运动学解析模型,得到叶片位移/速度解析值,与刚柔耦合分析值对比,验证刚柔耦合模型的合理性;进而,研究转速、背压等工况参数和叶片结构参数对动态接触力的影响规律。研究表明:旋叶式压缩机叶片运动位移、速度解析值与仿真值规律吻合较为良好,验证了旋叶式压缩机刚柔耦合建模与约束关系的合理性;为降低摩擦损耗,应对压缩机背压腔压力进行合理的动态控制。叶片动态接触激励力可为后续旋叶式压缩机振动噪声预估与控制提供力学边界数据。Here, to reveal dynamic contact excitation mechanism among blade, cylinder body and rotor of circular arc-simple harmonic curve combined type rotary vane compressor, based on the rigid-flexible coupled theory, multi-rigid-flexible coupled dynamic models of compressor flexible blade, rigid rotor and cylinder body were established. Pressure test data of primitive cavity were coupled to flexible blades in form of massless block, and the back pressure chamber pressure was exerted on the back of blade as mechanical boundary conditions to study multi-rigid-flexible coupled dynamic characteristics of the rotary vane compressor. Then, based on the equidistant curve envelope principle, the kinematic analytical model of compressor blade-cylinder shape line was established to obtain analytical values of blade displacement/velocity. Comparing these values with the rigid-flexible coupled analysis values, the rationality of the rigid-flexible coupled model was verified. Furthermore, effects of operating condition parameters, such as, rotating speed, back pressure and blade structure parameters on dynamic contact force were studied. The study showed that analytical values of blade motion displacement and velocity of rotary vane compressor agree better with simulation values to verify the rationality of rigid-flexible coupled modeling and constraint relations of rotary vane compressor;to reduce friction loss, the pressure in back pressure chamber of the compressor should be reasonably and dynamically controlled;dynamic contact excitation force of blades can provide mechanical boundary data for prediction and control of vibration and noise of subsequent rotary vane compressors.

关 键 词：旋叶式压缩机 刚柔耦合 动态接触激励 汽车空调 

分 类 号：TH455[机械工程—机械制造及自动化]