Dynamic Analysis of Flexible Mechanisms Using Vector Form Intrinsic Finite Element Method

• Main Authors: Wei-Han Sun, 孫緯翰
• Other Authors: 李志中
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/53031255776086392271

碩士 === 國立臺灣大學 === 機械工程學研究所 === 92 === In this thesis, the dynamic analysis of flexible mechanisms using vector form intrinsic finite element (VFIFE) method is performed. Based on the concept of finite element method, the structure is discretized into finite particles on which the mass is also assumed. In considering the accuracy of the analysis, the calculation of rigid body displacement is separated from the deformation displacement due to flexibility. A deformation coordinate system is introduced to calculate angular relations between the deformation coordinate system and the global coordinate system. Subsequently, the internal force due to deformation is calculated and the equations of motion of each particle are established via the Newton’s second law. Finally, several examples are illustrated to demonstrate the method and the result are compared with those run by the software ABAQUS. It is shown that the validity of the method in the dynamic analysis of flexible mechanisms.