移動集中質量系を伴う弾性支持された大変位,大変形梁の運動解析(機械力学,計測,自動制御)

概要

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It is known that vertical inertia force of a moving mass has a great effect on track vibration. A flexible beam which is considered as track may has large rotation and deformation during the moving load passage. In order to analyze the motion of the flexible beam with large deformation and rotation, the absolute nodal coordinate formulation was proposed. In this paper, this method is applied to examine the motion and vibration of the moving mass spring system on the flexible beam. First, in order to obtain the fundamental knowledge for the dynamic behavior of this system, eigen values and free vibration are investigated, comparing with the results applied the other method. Moreover, the experimental plant for this system is built. The features of the dynamic behavior of this system concerning with the acceleration, the phase difference between the beam and the mass and so on, are pointed out both numerically and experimentally. It is also shown that the presenting modeling and formulation for this system are valid, confirming that the calculation results agree with the experimental ones qualitatively.
2002-09-25