Results 11 to 20 of about 1,676,547 (251)

A Study on Dynamic Characteristics of Satellite Antenna System considering 3D Revolute Clearance Joint

open access: yesInternational Journal of Aerospace Engineering, 2020
Clearances in the joints of real mechanisms are unavoidable due to assemblage, manufacturing errors, and wear. The dual-axis driving and positioning mechanism is one kind of space actuating mechanism for satellite antenna to implement precise guidance ...
Zhengfeng Bai, Jijun Zhao
doaj   +2 more sources

Dynamics Analysis of Spatial Parallel Mechanism with Irregular Spherical Joint Clearance

open access: yesShock and Vibration, 2019
Clearances caused by machining accuracy and assembly requirements are regular, but they will be irregular due to the wear of the kinematic pairs. At present, there are few studies on wear of space kinematic pairs.
Xiulong Chen, Yuewen Li
doaj   +2 more sources

Dynamic behaviour of a vibratory linkage mechanism with bearing clearance. [PDF]

open access: yes, 1974
PhDThe work presented involves the theoretical and experimental studies of the kinematic and dynamic effects of bearing clearance in linkage mechanisms.
Wu, C
core   +4 more sources

Experimental investigations of the dynamic responses of a multi-link mechanism with revolute clearance joints

open access: yesAdvances in Mechanical Engineering, 2021
Joint clearance is unavoidable in the revolute joint of multi-link mechanism. Excessive value of joint clearance generally leads to the noise, vibration, and fatigue failure.
Xiaofeng Li   +4 more
doaj   +1 more source

Research on Dynamic Characteristic of Rudder Transmission System with Multiple Clearance Joints

open access: yesXibei Gongye Daxue Xuebao, 2020
In order to meet the characteristics including small clearance, heavy load and large contact area of joints existed in rudder transmission system, a new normal contact force model is established, which is suitable for the large-area contact process and ...

doaj   +1 more source

Dynamic Parameter Identification of a Pointing Mechanism Considering the Joint Clearance

open access: yesRobotics, 2021
The clearance of the revolute joint influences the accuracy of dynamic parameter identification. In order to address this problem, a method for dynamic parameter identification of an X–Y pointing mechanism while considering the clearance of the revolute ...
Jing Sun, Xueyan Han, Tong Li, Shihua Li
doaj   +1 more source

Dynamics and Wear Prediction of Mechanisms Considering Multiple Clearances and Coatings

open access: yesLubricants, 2023
The increase in joint clearance and system vibration caused by joint wear are important factors that may lead to the failure of the mechanism and a decrease in the motion accuracy of the actuator.
Qian Jing, Hongzhao Liu
doaj   +1 more source

Dynamic response analysis for multi-degrees-of-freedom parallel mechanisms with various types of three-dimensional clearance joints

open access: yesInternational Journal of Advanced Robotic Systems, 2021
For spatial multibody systems, the dynamic equations of multibody systems with compound clearance joints have a high level of nonlinearity. The coupling between different types of clearance joints may lead to abundant dynamic behavior.
Jia Yonghao, Chen Xiulong
doaj   +1 more source

Nonlinear Dynamics and Control of Crank-Slider Mechanism with Multiple Clearance Joints [PDF]

open access: yesJournal of Theoretical and Applied Vibration and Acoustics, 2015
In the current study, behavior of crank-slider mechanism with single and multiple clearance joints are analyzed. Using Lankarani-Nikravesh theory for estimating discontinuous contact forces in clearance joints, relevant systems have been mathematically ...
Morteza Dardel   +3 more
doaj   +1 more source

Effect of Multi-Joint Clearance Coupling on Shimmy of Nose Landing Gear

open access: yesAerospace, 2023
The existence of joint clearances in the nose landing gear (NLG) is inevitable and significantly affects shimmy. It was found that the interaction of each joint clearance is closely related to the analysis of shimmy stability.
Guang Feng, Bingyan Jiang, Yiyao Jiang
doaj   +1 more source

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