Method of accurately obtaining transverse vibration of rope equipment with length changeable rope
A lateral vibration, variable length technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as failure to solve lateral vibration
Active Publication Date: 2016-12-14
HEFEI UNIV OF TECH
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Problems solved by technology
In the actual engineering application of axially moving rope equipment, traveling waves in different directions will reflect multiple times at the boundary of the finite-length moving rope, and superimpose with the incident wave to form the lateral vibration of the moving rope. The method does not solve the problem of accurate acquisition of lateral vibration formed by multiple reflections and superimpositions of traveling waves in finite-length moving rope equipment
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[0091] In the method for accurately obtaining the lateral vibration of the variable-length rope equipment in this embodiment, the axially moving equipment is an axially moving rope equipment, and the motion condition of the rope equipment is that the length of the rope changes linearly. The method of the present invention is characterized by the following process: :
[0092] Determine the motion model of the rope equipment, and obtain the motion equation of the rope equipment;
[0093] Determine the initial conditions and boundary conditions of the motion of the rope equipment;
[0094] Determine the vibration period T of the rope device;
[0095] According to the law of traveling wave motion in the rope device, the vibration cycle T is divided into three stages: [t n-1 ,t an ], [t an ,t bn ] and [t bn ,tn ], where t n-1 an bn n ;
[0096] The boundary incident waves and boundary reflected waves of the rope equipment in three stages are respectively obtained by combini...
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The invention discloses a method of accurately obtaining transverse vibrations of rope equipment with a length changeable rope; axial movement equipment is axial movement rope equipment; a rope equipment motion condition refers to that the rope length can form linear changes; the features are that a vibration period is divided into three stages according to a rope equipment traveling wave motion rule; a boundary incoming wave and a boundary reflection wave of the rope equipment in the three phases are respectively obtained according to the rope equipment traveling wave motion rule and boundary conditions; the boundary incoming wave and the boundary reflection wave are superposed so as to respectively obtain lateral displacements of the rope equipment in the three phases. The method is suitable for various complex boundary conditions and various speed conditions of the mobile rope equipment with the linearly changing rope length; the obtained vibration displacement responses are accurate, thus satisfying axial movement rope transverse vibration various value calculating method feasibility and validity examinating demands.
Description
technical field [0001] The invention belongs to the field of dynamic modeling and vibration control of mechanical systems, and more specifically relates to a method for accurately obtaining lateral vibration of variable-length rope equipment. Background technique [0002] Axially moving rope equipment has the advantages of efficient operation, strong self-adaptation, large bearing capacity, simple structure, flexible and controllable, etc., and has very important application value in many engineering fields, such as tethered satellite cables, power transmission belts, elevator cables, Passenger and cargo ropeways, etc. Noise and vibration accompanies the operation of these equipment, especially lateral vibration has a great impact on the function and safety of these equipment. The problem of lateral vibration of axially moving rope installations is a challenging subject that has been studied for many years and is still widely concerned today. The traditional research techn...
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IPC IPC(8): G06F17/50
CPCG06F30/20G06F2111/10
Inventor 陈恩伟罗全陆益民吝辉辉仲凯魏浩征
Owner HEFEI UNIV OF TECH