含间隙涡旋压缩机转子系统刚柔耦合模型仿真分析

为了提高涡旋压缩机转子系统的精度与可靠性,通过ADAMS和ANSYS建立了含运动副间隙涡旋压缩机转子多刚体及刚柔耦合模型,对动涡盘倾覆下驱动轴承柔性和运动副间隙对转子系统动力学性能的影响进行仿真分析,在此基础上对轴承偏磨区域进行了有限元分析.分析结果表明:运动副间隙下轴承柔性对轴承的位移和速度影响较小,对轴承加速度和碰...

Simulation analysis on rigid-flexible coupling model for scroll compressor rotor system considering clearance

In order to improve the accuracy and reliability of the scroll compressor rotor system, the multi-rigid body and rigid-flexible coupling model of rotor for scroll compressor with joint clearances were established by means of software ADAMS and ANSYS. Effects of the flexible drive bearing and joint clearances on the dynamic performance of the rotor system with overturn of orbiting scroll was simulated and analyzed, and on the basis of which the bearing eccentric worn area is analyzed by finite element method. Results from the finite element analyses show that under the clearance of the moving pair, the flexibility of the bearing has little influence on the displacement and speed of the bearing, but has a great influence on the acceleration and collision force of the bearing. The maximum acceleration is about 13.34 times that of the multi-rigid body model, and the maximum collision force increases by 2.9 times. The bearing has partial wear area in the range of 31.29° behind the exhaust angle, and the maximum stress occurs at 2/7 of the needle roller. The simulation results provide analytical method and theoretical guidance for design and dynamic behavior prediction of scroll compressor.