Dynamic response errors and accuracy reliability for mechanism with multiple lubrication clearance joints

Chen, Xiulong; Wang, Tao; Gao, Shun

doi:10.1007/s00419-022-02283-2

Cited by 6 publications

(2 citation statements)

References 31 publications

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“…At present, many studies about aircrafts and spacecraft focus on the modeling of the transmission mechanism with joint clearance and flexibility. In addition, research on the dynamics of mechanisms with clearances includes the analysis of the wear [21], lubrication [22,23], coating [24] and uncertainty parameters [25,26]. However, fewer investigations of the coupling effects of the actuator and linkage mechanism have been carried out.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of the Flap Actuation System Considering the Nonlinear Factors of EMA, Joint Clearance and Flexibility

Wan,

Song,

Zhou

et al. 2024

Aerospace

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The performance of the flap actuation system directly affects the control effect and the flight quality of an aircraft. The electromechanical actuator (EMA) and the linkage mechanism are important components of the system. In order to achieve the goals of good transmission accuracy and dynamic response, the influence of nonlinear properties in the transmission chain including the EMA and linkage mechanism should be considered. A co-simulation model at the system-level of the flap actuation system was developed, which takes nonlinear factors of the EMA, the impact dynamics of the linkage mechanism with joint clearance and the rigid–flexible coupling characteristics into account. Moreover, the experiments with different command frequencies and loads were performed. The simulation and experimental results were compared to verify the effectiveness of the co-simulation model. Finally, the effects of nonlinear properties including the contact stiffness and clearance of a planetary roller screw mechanism, EMA anchorage stiffness, number of clearance joints, flexibility and load are discussed. This work can contribute to analyzing the performance of an electromechanical multibody system with nonlinear characteristics, which has crucial academic meaning and engineering application values for the development of systems with high speed, good reliability and long life.

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Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of the Flap Actuation System Considering the Nonlinear Factors of EMA, Joint Clearance and Flexibility

Wan,

Song,

Zhou

et al. 2024

Aerospace

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“…Erkaya et al [17] investigated the effects of joint clearance on the dynamic characteristics of a partly compliant mechanism. Chen et al [18] studied the mechanism's dynamic response errors and accuracy reliability with lubrication clearance joints. Liu and Bai [19] numerically investigated the effects of joint clearance on a robot manipulator system.…”

Section: Introductionmentioning

confidence: 99%

A study on the effects of clearance joints on the dynamic response of the beam-joint structure using VFIFE

Yao

Liang

Zhang

et al. 2023

Preprint

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Joint clearance is unavoidable because it ensures successful assembly and deployment, but it also affects the dynamic response, stability, and pointing accuracy of large deployable space structures. This paper investigates the effects of clearance joints on the dynamic response of a beam-joint structure, a fundamental element of large deployable space structures. Vector form intrinsic finite element is employed to establish the structure’s motion governing equation to overcome the difficulties in modeling and solving of traditional finite element method led by contact behavior. The contact forces are modeled by the Lankarani and Nikravesh contact model and the modified Coulomb's friction model. First, a classical benchmark problem of a clamped-clamped beam is studied to validate the accuracy and efficiency of the model proposed. Then, a planar beam-joint structure with clearance joints is used to investigate the effects of clearance on the dynamic response. Subsequently, multiple simulation cases are executed to study the effects of different clearance factors on the dynamic structural characteristics. The results show that as the coefficient of restitution becomes small and the sliding friction coefficient gets large, more energy is dissipated, revealing their significant influence on the structural damping characteristics. Joint clearance enlarges the structure’s dynamic response, and larger clearance size and more clearance joints exacerbate these effects. The structure’s damping ratio becomes larger when the clearance size gets smaller. These results indicate that clearance joints have significant effects on the structure's dynamic characteristics, and they must be considered in the design and analysis of high-precision space structures.

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Theoretical and experimental studies on effect of impact load on dynamic characteristics of multi-link press mechanisms with clearances

Chen,

2023

Nonlinear Dyn

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Dynamic response errors and accuracy reliability for mechanism with multiple lubrication clearance joints

Cited by 6 publications

References 31 publications

Modeling and Analysis of the Flap Actuation System Considering the Nonlinear Factors of EMA, Joint Clearance and Flexibility

Modeling and Analysis of the Flap Actuation System Considering the Nonlinear Factors of EMA, Joint Clearance and Flexibility

A study on the effects of clearance joints on the dynamic response of the beam-joint structure using VFIFE

Theoretical and experimental studies on effect of impact load on dynamic characteristics of multi-link press mechanisms with clearances

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