Dynamic Analysis of Flexible Mechanisms Using Vector Form Intrinsic Finite Element Method
Date Issued
2004
Date
2004
Author(s)
Sun, Wei-Han
DOI
zh-TW
Abstract
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.
Subjects
向量式有限元素法
撓性機構
變形坐標
顯式時間積分
deformation coordinates
VFIFE
explicit time integration
flexible mechanism
Type
thesis
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