VIBRATION ANALYSIS OF THE SUSPENSION WEIGHT-BRIDGE&nbsp;CRANE COUPLING SYSTEM

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (15) : 127-132.

VIBRATION ANALYSIS OF THE SUSPENSION WEIGHT-BRIDGE CRANE COUPLING SYSTEM

XIE Wei-ping HUANG Jin ZHOU Jia-ling HE Wei

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Abstract

Considering the swing of the suspension weight, the suspension weight-bridge crane coupling system is simplified to a model that the moving mass and the suspension weight moving on a simply supported beam and its motion differential equation is derived based on Lagrange equation. Runge-Kutta integration is used for numerical solution and some influence factors on system response are analyzed, such as the acceleration of the moving mass, the length of the wire and the mass ratio of the suspension weight. The results show without considering the swing of the suspension weight, vibration response of the beam will be underestimated by using the beam subjected to the moving mass model. When the mass sum of the moving mass and the suspension weight is a fixed value, the greater the mass ratio of the suspension weight,the greater the response of the beam that the acceleration of moving mass has great influence on the vibration of the beam.

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suspension weight-bridge crane coupling system / moving mass / suspension weight / Lagrange equation

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XIE Wei-ping HUANG Jin ZHOU Jia-ling HE Wei. VIBRATION ANALYSIS OF THE SUSPENSION WEIGHT-BRIDGE CRANE COUPLING SYSTEM[J]. Journal of Vibration and Shock, 2015, 34(15): 127-132

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