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Frontiers of Mechanical Engineering >> 2009, Volume 4, Issue 4 doi: 10.1007/s11465-009-0044-7

Vibration analysis of a simply supported beam under moving mass based on moving finite element method

Institute of Vibration Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China;

Available online: 2009-12-05

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In this paper, a moving finite element (MFE) method is proposed to perform the dynamic analysis of a simply supported beam for a moving mass (MM). The MFE method treats the moving mass as a moving part of the entire system, so that the transverse inertial effects caused by the moving mass may easily be taken into account. The solution to the beam’s dynamic behaviors including its displacement is obtained via a Newmark-β method; the effects of the velocity and weight of the MM on the beam’s dynamic behaviors are further discussed. The numerical examples show that the inertial effects of the MM significantly affect the transverse responses of the simply supported beam.

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