Dynamic responses of space solar arrays considering joint clearance and structural flexibility

Li, Yuanyuan; Wang, Zilu; Huang, Wenhu

doi:10.1177/1687814016657945

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…When the contact deformation occurs between the pin and sleeve, the contact force Fp in the clearance joint includes normal force Fn and tangential friction force Ft. The deployable solar panel has the characteristics of low-speed collision and large recovery coefficient [22], the L-N (Lankarani-Nikravesh) model can be used to solve the normal force [23]. Further, considering that the working environment of deployable solar joint is vacuum, it is reasonable to ignore lubrication and assume that the joint is in dry friction state.…”

Section: Contact Force Model Of Three-dimensional Clearance Jointmentioning

confidence: 99%

Dynamic characteristics analysis of deployable panel with clearance joint based on three-dimensional clearance measurement

Qiu

et al. 2023

Preprint

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The main purpose of the research is to realize the dynamic characteristics analysis of deployable array with three-dimensional (3D) clearance joints through the 3D clearance measurement. Through the analysis of geometric and mechanical characteristics of 3D clearance joint, the dynamic model of deployable array with 3D clearance is established. The 3D clearance measurement system is built with reference to the space two-point method and the system error is eliminated. A verification experiment is set up to evaluate the measurement method. The feasibility of the theoretical model is verified by comparing the measurement results with the numerical data of the deployable panel, and the effects of deployment speed, clearance radius and deployment mode on the dynamic properties of the deployable panel are studied. The experimental results show that when the vertical deployment mode is adopted, the single deployment time ranges from 30 s to 60 s, and the clearance radius varies from 0.1 mm to 0.2 mm, the dynamic characteristics of deployable array are best.

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Section: Contact Force Model Of Three-dimensional Clearance Jointmentioning

confidence: 99%

Dynamic characteristics analysis of deployable panel with clearance joint based on three-dimensional clearance measurement

Qiu

et al. 2023

Preprint

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“…It is found that dynamic characteristics of spatial clearance revolute joint are more chaotic than planar clearance revolute joint. Li et al [35] developed the effects of structural flexibility and revolute joint with clearance on the dynamic characteristics of a deployable solar panel system, which showed that the interaction of structural flexibility and joint clearance intensifies the chatter and instability. Zheng et al [36] built an improved dynamics model of precision presses, which considers the bearing supporting stiffness of crankshaft system, flexible link and clearance between pendulum arm and the slider.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamic characteristics analysis of planar flexible rotating beams with clearance joint

Chen

Qian

2020

J Braz. Soc. Mech. Sci. Eng.

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This paper presents a dynamic modeling method for studying dynamic behavior of planar flexible rotating beams with clearance joint. The Hamilton method is introduced to establish a dynamic model of the planar flexible rotating beams. The coupling relationship among the planar revolute joint clearance, the elastic deformation and wide range motion is taken into account. To address the problem of dynamic stiffening under the situation of high-speed rotation, the second-order coupling quantity of the longitudinal contraction caused by the transverse bending deformation is taken into account. To illustrate this method, two examples are presented: a typical planar rotating flexible beam with clearance revolute joint, and an engineering rotating manipulator arm. The typical planar rotating flexible beam example illustrates the efficiency and the accuracy of the dynamic modeling method. Results show that clearance joint leads to dynamic irregular fluctuation. The second example is the engineering problem that we have to deal with, in which the structure of manipulator arm is modeled as a clamped-free beam. Simulation results indicate that the motion of manipulator arm is nonlinear, and it is unreasonable to employ the model of ideal rigid body to build the controller of manipulator arm. Compared to the stage of oscillation, the dynamic fluctuation is small in the process of continuous contact. Besides, the contact force of clearance joint is higher than the constraint force of ideal joint during the process of contact.

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“…When the aim of the multibody model is to predict the friction between the synchro rings, the effect of lubrication should be considered. In multibody dynamics, [8][9][10] friction and lubrication phenomena are widely observed and researched, such as imperfect joints [11][12][13][14] and bearings. 15 Detailed studies about synchronizer friction in consideration of lubrication are presented in Abdel et al 16 and Paffoni et al 17 Abdel et al 16 derived the theoretical performance equations for the triple-cone synchronizers.…”

Section: Introductionmentioning

confidence: 99%

Modelling and simulation of synchronization and engagement for self-energizing synchronizer with multibody dynamics

Feng

Jiang

et al. 2017

Advances in Mechanical Engineering

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A multibody dynamic model of the self-energizing synchronizer in a 14-speed manual transmission gearbox is presented. While the contact forces between the engaged splines/teeth and friction torques between the synchro rings are hardly observed by conventional experiments, detailed contact and friction models in consideration of lubrication are established to simulate these contact/friction forces during shifting. The space motion of the sleeve is considered; thus, the differences in the contact forces between the engaged teeth can be simulated and observed. A pneumatic model is established to model the varying shift force acting on the synchronizer. An experiment is conducted for the self-energizing synchronizer to validate the presented synchronizer model. Moreover, to demonstrate the self-energizing function of the synchronizer, a synchronizer without self-energizing mechanism is modelled and compared with the original one.

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Dynamic responses of space solar arrays considering joint clearance and structural flexibility

Cited by 6 publications

References 20 publications

Dynamic characteristics analysis of deployable panel with clearance joint based on three-dimensional clearance measurement

Dynamic characteristics analysis of deployable panel with clearance joint based on three-dimensional clearance measurement

Nonlinear dynamic characteristics analysis of planar flexible rotating beams with clearance joint

Modelling and simulation of synchronization and engagement for self-energizing synchronizer with multibody dynamics

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