Dynamics of a flexible multi-body hoisting system based on an equivalent simplified model

被引：0

作者：

Yan S. ^{[1
]}

Peng J. ^{[2
]}

Ren Z. ^{[1
]}

Wang S. ^{[1
]}

机构：

[1] School of Civil Engineering, Hunan University of Science and Technology, Xiangtan

[2] Hunan Provincial Key Laboratory of Structures for Wind Resistance and Vibration Control, Hunan University of Science and Technology, Xiangtan

来源：

| 1600年 / Chinese Vibration Engineering Society卷 / 39期

关键词：

Dynamical model; Hoisting system; Multi-body dynamics; Response analysis;

D O I：

10.13465/j.cnki.jvs.2020.18.035

中图分类号：

学科分类号：

摘要：

The rigid-flexible dynamical characteristics of a flexible multi-body hoisting system were investigated during its slewing by using a simplified equivalent mathematical model. The boom head vibration structure was modeled by an equivalent spring mass damper system, while the sway motion of the payload was described as the vibration of a spatial suspending system. Based on the Lagrange equation, a simplified mathematic model was derived by using the recursive formulation with floating frames to describe the motions of bodies. The dynamics of a real large scale truck crane was analyzed with the proposed formulation and computational method. The comparisons between the simulation and test results show that the method is very effective and convenient for truck crane's slewing simulation. The results of spectrum analysis reveal that with the increase of payload weight and the decrease of rope length, the contribution of the payload sway to the boom vibration increases, however, the influence of the self-excitation caused by inertial force is reduced, besides, under heavy load and short rope conditions, the coupling effect between the boom vibration and payload sway becomes significant. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：255 / 261

页数：6

共 16 条

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