The Dynamic Characteristics Analysis and Experiment Studies of a High-speed Aerostatic Spindle

• Main Authors: Lan-Qiao Zhan, 詹嵐喬
• Other Authors: Ming-Fei Chen
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/35788930130569168182

碩士 === 國立彰化師範大學 === 機電工程學系 === 94 === In the numerical analysis of spindle-bearing system, this paper mainly base on the finite element method and take MATLAB design software as program designing platform to complete the numerical analysis program for a spindle-bearing system. The spindle-bearing system consists of elastic shaft, rigid disks and bearing which has damping and stiffness. During analysis of the shaft elements, the research will probe into the beam of Timoshenko. The model of the shaft element includes the effects of translation inertia, rotatory inertia, gyroscopic moments, and shear deformations. The article will probe into shear deformed effect. In order to confirm the reliability of the analysis formula, this paper chooses to analyze the simple uniform rotor. This research makes the modal testing to compare its natural frequencies and mode shapes in bending with the testing results. Then this research obtains critical speeds by using the finite element mode. Finally, the paper further analyze the spindle-bearing system and draw the Campbell diagram, mode shape and the critical speed versus bearing stiffness diagram. These results of analysis are the basis of the high-speed aerostatic spindle design modification. The finite element analytical program can be an analyzing tool of designing the spindle-bearing system in the future.