Natural frequency calculation of thin wall structure during machining

• Main Authors: Yuan-You Li, 李元祐
• Other Authors: 陳任之
• Format: Others
• Language: en_US
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/56179213671911708463

碩士 === 國立中興大學 === 機械工程學系所 === 105 === To avoid thin-walled workpieces arising chatter, it can be based on the chatter stability lobes. The chatter stability lobes can be got by the natural frequencies of the thin-walled workpieces. This study applies the Rayleigh-Ritz method (RRM) to calculate natural frequencies of vise-clamped thin-walled workpieces in the vise-clamped. The Rayleigh-Ritz method is suitable for multi-degree-of-freedom systems and the calculation time is shorter. Compared Rayleigh-Ritz method with other commercial software is also quite accurate. The study has two goals 1. To discuss accuracy between different theories and choose a suitable theory to calculate natural frequencies. 2. Applying the Rayleigh-Ritz method to calculate the natural frequencies of the rectangular plates and the stepped thickness plates in the vise-clamped, and validate the accuracy of the theory with experiment.