Dynamic analysis of a planar multibody system with multiple revolute clearance joints

Wen-zhou, Lin; Ji, Xiaomin; Zhu, Guoqiang; Bai, Xiaobo; Guo, Yong‐Xin

doi:10.1177/0954406218819022

Cited by 15 publications

(10 citation statements)

References 36 publications

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“…Li et al 15 investigated the dynamic influence of the rigid-flexible coupling solar panel system considering the clearance, and the research pointed out that the reasonable configuration of the clearance size is an effective way to reduce the contact collision. Wang et al 16 used an improved nonlinear contact force model to study the dynamic behavior of four-bar linkage with multi-clearances, and discussed the effect of clearance position and number on the dynamic behavior of the system. The multi-body system with multi-clearances presents more complex dynamics and nonlinear dynamic characteristics, and the interaction characteristics and wear effect between multi-clearance to be further studied.…”

Section: Introductionmentioning

confidence: 99%

Research on irregular wear mechanism of planar multi-body mechanical system with multi-clearance joints

Wang

Jin

Wei

et al. 2022

Advances in Mechanical Engineering

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An approach for analyzing and quantifying the irregular wear effect of planar multi-body mechanical system with multi-clearances is proposed. The classical planar four-bar linkage is used as a demonstrative example to study the mechanism of irregular wear effect of multi-body system with multi-clearances. The system dynamic equation is established using Lagrange multiplier method, the contact force and friction in the process of contact collision are respectively modeled using the Lankarani-Nikravesh (L-N) nonlinear contact force and LuGre models, and the wear depth prediction model for multi-clearance joints is built based on Archard’s equation. The influence of the crank speed, clearance number, clearance position and clearance size on the wear effect of multi-clearances system is comprehensively studied. Numerical simulation results show that the wear depth joint increases with increase of crank speed, and there are significant differences in the wear depth of different clearance joints. When the clearance size changes, the significant nonlinear wear phenomenon appears at different joints, when the clearance size of different joints meets a certain proportion, the system wear phenomenon is the least. The obtained valuable results provide important theoretical support for the optimal design of multi-clearance joints system.

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Section: Introductionmentioning

confidence: 99%

Research on irregular wear mechanism of planar multi-body mechanical system with multi-clearance joints

Wang

Jin

Wei

et al. 2022

Advances in Mechanical Engineering

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“…Bai et al [17] established a new contact force model of planar linkage mechanism, and proposed a kinematics and dynamics optimization scheme of linkage structure to reduce the vibration peak caused by clearance. Wang et al [18] and [19] proposed an improved normal contact force model and modified Coulomb friction model and took the crank slider and four-bar linkage mechanism as research objects to analyse the impact of clearance on the dynamic characteristics of the mechanism. Matekar and Fulambarkar [20] established a crank slider simulation model without clearance or adjustable clearance by Adams, analysed the impact of clearance on the slider displacement, and verified the simulation results through experimental devices.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of Hydraulic Support with Single Clearance

Zeng

Yang

2021

SV-JME

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Hydraulic support is a complex parallel mechanism composed of multiple kinematic pairs. In the work of hydraulic support, clearances between kinematic pairs are inevitable, which lead to the deterioration of the support’s working performance, and may even affect support’s normal work in serious cases. To study the influence of clearances on hydraulic support and simultaneously avoid the mutual interference between different clearances, the normal and tangential force models of kinematic pairs with clearance are established, based on the Lankarani-Nikravesh contact force model and the Coulomb friction model. Furthermore, the dynamic model of the hydraulic support with single clearance is established by adding a clearance between the rear link and base and, according to the dynamic model of the hydraulic support, the research about the influence of clearance on the movement and force of hydraulic support is carried out, which proves the need to study the clearance of hydraulic support. Moreover, the influence of clearance, clearance size, and different oil inlet drive modes of front and rear columns on the stability of hydraulic support are analysed, and then the change of hydraulic support posture caused by clearance and clearance size is considered. The results show that clearance causes the movement and force of the rear link to fluctuate, which affects the stability of the hydraulic support. The clearance size affects the fluctuation degree of the movement and force, which is an important factor in the instability of hydraulic support. Also, the hydraulic support posture is changed by the clearance and clearance size. Different column oil inlet drive modes have different impacts on the clearance and have different effects on the stability of hydraulic support.

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“…Starting with a two-dimensional planar bar system, Ting et al [11] studied the effect of the joint clearance on the position and attitude deviation of the connecting rod and manipulator and found that joint clearance would lead to the uncertainty in the position and direction of the mechanism. Wang et al [12] studied the dynamic response of the planar four-bar mechanism with multiple clearance joints by theoretical modeling. Chunmei et al [13] established a single degree of freedom dynamic model for the separation and collision process of the elastic linkage mechanism, and the results show that the stability of the mechanism with large radial clearance is much lower than that of the mechanism without clearance.…”

Section: Introductionmentioning

confidence: 99%

Simulation Research on the Influence of the Clearance to the Impact Contact Characteristics between Coal Gangue and the Clearance‐Contained Tail Beam Structure

Yang

Xin

Zeng

et al. 2021

Advances in Materials Science and Engineering

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There are various forms of clearance at the connection of various parts of the hydraulic support. However, the influence of clearance has been ignored in various related research studies of the hydraulic support. In order to clearly grasp the accurate impact contact response law between coal gangue and the hydraulic support, the radial clearance in the pin shaft connection structure of the tail beam is considered for the first time in this paper. By constructing the theoretical contact model of the pin shaft connection, the difficulty of studying the interaction between coal gangue and the hydraulic support through theoretical solution is proved. On this basis, the finite element contact simulation analysis method is proposed to study the impact contact behavior between coal gangue and the tail beam. This paper constructed the finite element impacting simulation model between coal gangue and the radial clearance-contained tail beam structure and carried out impact contact simulation between coal gangue and the multiple clearance-contained tail beam structure as well as the changing clearance-contained tail beam structure, respectively, and contact responses of the tail beam structure such as the spring stress, the pin shaft test point stress, acceleration, and velocity of the tail beam test point under different working conditions are obtained. The influence law of clearance on different contact responses is studied, and the differences of contact responses after coal gangue impact between two clearance-contained tail beam structures and three clearance-contained tail beam structures are compared and analyzed. Research results show that, in the condition of multiclearance, the amplitude of each contact response when gangue is impacted is greater than that of coal. When the radial clearance of the connection unit increases from 0 to 0.25 mm, the overall fluctuation amplitude of the contact responses decreases. In 3-clearance state, increase of the radial clearance size of the connection unit will lead to the increase of the spring stress, the stress of the pin shaft test point, and the velocity of the tail beam test point gradually and the decrease of the acceleration of the tail beam test point. Throughout the research, the vibration response of the pin shaft can be taken as coal gangue recognition parameter. The work provides a theoretical basis for the study of the influence law of clearance on hydraulic support and provides a reference for the study of contact behavior between coal gangue and the hydraulic support.

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Dynamic analysis of a planar multibody system with multiple revolute clearance joints

Cited by 15 publications

References 36 publications

Research on irregular wear mechanism of planar multi-body mechanical system with multi-clearance joints

Research on irregular wear mechanism of planar multi-body mechanical system with multi-clearance joints

Dynamic Analysis of Hydraulic Support with Single Clearance

Simulation Research on the Influence of the Clearance to the Impact Contact Characteristics between Coal Gangue and the Clearance‐Contained Tail Beam Structure

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