2013年 第8卷 第3期
《机械工程前沿（英文）》 >> 2013年 第8卷 第3期 doi: 10.1007/s11465-013-0264-8
Dynamic analysis of a rig shafting vibration based on finite element
School of Power and Mechanical Engineering Wuhan University, Wuhan 430072, China
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摘要
In recently, finite elements method (FEM) has been used most popular for analysis of stress, vibration, heat flow and many other phenomena. Taking a rig shafting as an example, this paper studies the lateral vibration of the rig shafting with multi-degree-of-freedom by using FEM. The FEM model is created and the eigenvalues and eigenvectors are calculated and analyzed to find natural frequencies, critical speeds, mode shapes and unbalance responses. Then critical and mode shapes are determined. Finally, responses of unbalance force are analyzed in case of undamped and damped system, and peaks of response are compared.
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