Modelling and simulation of a stationary high-rise elevator system to predict the dynamic interactions between its components

Crespo, Rafael Sánchez; Kaczmarczyk, Stefan; Picton, Philip; Su, Huijuan

doi:10.1016/j.ijmecsci.2018.01.011

Cited by 43 publications

(35 citation statements)

References 35 publications

(41 reference statements)

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“…Emergency braking condition requires much higher braking performance than normal braking. On the one hand, the elevator brake suddenly holds the brake during the emergency braking, which has a great impact on the tractor and the traction wheel [23]. On the other hand, for the elevator car, the speed reduction caused by emergency braking will have a greater impact on the elevator car, affecting the ride comfort and safety of the elevator [24].…”

Section: Study On the Vertical Vibration Methods Of The Elevator Tractmentioning

confidence: 99%

Study on Theoretical Model and Test Method of Vertical Vibration of Elevator Traction System

Peng

Jiang

Yuan

et al. 2020

Mathematical Problems in Engineering

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In order to study the dynamic characteristics of the elevator, the response characteristics of the elevator under normal operation and emergency braking conditions are analyzed. In this paper, the centralized mass discretization model is used to study the vibration characteristics of the elevator traction system under the external excitation. Firstly, the vibration equation of the elevator multi-degrees-of-freedom (abbreviated as DOF) system is established. en, the vibration characteristics of the three DOF system are analyzed, and the natural frequencies and modes are obtained. e free vibration equation and forced vibration equation are obtained, and the theoretical solutions are obtained. Finally, the test method proposed in this paper is used to test the normal operation and emergency braking of the elevator. e test results show that, under normal operation conditions, the measured speed and distance errors are not more than 4.2%, the up running distance measured by the elevator is larger than the actual value, while the down running distance is smaller than the actual value; under emergency braking condition, because the steel wire rope can only bear the pulling force, the peak acceleration fluctuation in the up emergency braking process is large, while the down emergency braking acceleration fluctuation is small. erefore, the elevator vibration analysis model and the vibration test method proposed in this paper can be used for the analysis of elevator dynamic performance, which has great reference value for the safety performance research of the elevator traction system.

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Section: Study On the Vertical Vibration Methods Of The Elevator Tractmentioning

confidence: 99%

Study on Theoretical Model and Test Method of Vertical Vibration of Elevator Traction System

Peng

Jiang

Yuan

et al. 2020

Mathematical Problems in Engineering

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“…erefore, there is a need to research lateral vibration responses of the winding hoist rope under axial wobbles of the head sheave. e kinematics and dynamics of cables and strings have attracted interest of a large number of researchers [2][3][4][5][6][7][8][9][10][11][12]. e lateral vibration characteristics of axially moving strings are reviewed [13].…”

Section: Introductionmentioning

confidence: 99%

“…e integrated model of the highlevel building elevator is given. e research results show that nonlinear dynamic behaviors entering the various parts of a building elevator are mutually influential [9]. e nonlinear lateral vibration behaviors of the flexible elevator cable with variable length are given by the Hamilton principle [10].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamic Behavior of Winding Hoisting Rope under Head Sheave Axial Wobbles

Wang

Xiao

et al. 2019

Shock and Vibration

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Axial wobbles of the head sheave due to manufacturing accuracy and installation technology can exert periodic lateral excitations to the winding hoisting rope. A hoisting rope consists of a constant catenary rope from the drum to the head sheave and a variable vertical rope from the head sheave to the conveyance. e longitudinal and lateral vibration responses of the hoisting rope are coupled to each other. In this paper, the coupled lateral-longitudinal governing equations of the winding hoisting system under the axial wobble excitations of the head sheave are established by the Hamilton principle. e governing equations are nonlinear infinite-dimensional partial differential equations, which are discretized into the finite-dimensional ordinary differential equations through the Galerkin method. e dynamic responses of the hoisting rope under the head sheave axial wobbles are given by MATLAB simulation when the winding hoist is lifting or lowering. e results show that lateral vibration displacements of the vertical rope under the head sheave axial wobbles are larger than those of the catenary rope. e axial wobble amplitude range of the head sheave is given to limit the lateral vibration displacements of the hoisting rope.

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“…В первую очередь, для высотных зданий необходимо определение динамических параметров, которые формируются на установлении периодов и собственных колебаний [17][18]. Также необходимо учесть, что регистрация колебаний требует не только сложной предварительной обработки, но и создания более точной модели динамики сооружения [19][20]. Основной особенностью определения динамических параметров допускается то, что схемы наблюдений могут быть достаточно простыми (вплоть до одной точки).…”

Section: Introductionunclassified

Monitoring system of high-rise buildings, determined from the nature of the curvature of the elastic line of vertical elements

Plotnikov

Ivanov

2019

Stroitel’stvo: nauka i obrazovanie

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Introduction. Issues arising from the automatic monitoring of high-rise buildings are considered. One of such issues is the necessity of minimizing the number of sensors when taking the operational patterns of such load-bearing systems. The method of sensor placement in high-rise buildings is described. Materials and methods. Different structural systems of high-rise buildings have common dependencies of longitudinal axis deformation on rigidity of vertical and horizontal load-bearing elements. Calculation of deformations from static wind load, comparison of data obtained by manual and computer calculation, and also comparison of static wind load with the wind load pulsation component are performed. Results. From the analysis of the extrema of the deformation function of the building vertical axis with the horizontal plane of the floor structure preserved, the main typical monitoring points necessary to minimize the number of sensors in high-rise buildings were determined. Based on the typical breaking points, the required number of sensors located 1/4 of the building height away from each other and the range of measured values of deformations that occur during operation were determined. Conclusions. For automatic (constant) monitoring of high-rise buildings, it is advisable to use a complex integrated method of measuring deformations of vertical load-bearing structures, frequencies and amplitudes of oscillations, and rotation angles. According to the general design theory of high-rise buildings and computer calculation models, the most efficient placement of engineering structure monitoring sensors is when they are evenly covering the perimeter of each floor and the entire height of the building. Measurements should be carried out following the outlines of the floor structures on stories located 1/4 of the building height away from each other, as well as on the stiffening core to control the integrity of floor structures and their connection to the stiffness core.

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Modelling and simulation of a stationary high-rise elevator system to predict the dynamic interactions between its components

Cited by 43 publications

References 35 publications

Study on Theoretical Model and Test Method of Vertical Vibration of Elevator Traction System

Study on Theoretical Model and Test Method of Vertical Vibration of Elevator Traction System

Nonlinear Dynamic Behavior of Winding Hoisting Rope under Head Sheave Axial Wobbles

Monitoring system of high-rise buildings, determined from the nature of the curvature of the elastic line of vertical elements

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