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摘要

本文研究了船舶甲板升降装置复杂流体力学系统动态过程的数学建模问题。这类设备的不同之处在于在特殊条件下工作,即在外部水文气象因素的影响下,要考虑到被拖物体参数的变化。为了平稳地控制工作滚筒上的转矩变化以减小动载荷,提出采用对载荷变化敏感的液压驱动。得到的数学模型可以确定液压驱动参数对驱动系统瞬态的影响,并研究粘弹性绳在拖拽物体时的纵向振动。
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THE STUDY OF LONGITUDINAL OSCILLATIONS OF A VISCOELASTIC ROPE WHEN TOWING OBJECTS
The paper deals with the problems of mathematical modeling of dynamic processes occurring in a complex hydromechanical system of ship deck lifting devices. The difference of this class of equipment is the work in special conditions, i.e. under the influence of external hydrometeorological factors, taking into account changes in the parameters of the towed object. In order to smoothly control the change of torque on the working drum to reduce dynamic loads, it is proposed to use a hydraulic drive that is sensitive to changes in the load. The obtained mathematical model allows to determine the influence of the hydraulic drive parameters on the transients in the drive system and to study the longitudinal vibrations of the viscoelastic rope when towing objects.
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