Results 11 to 20 of about 307,462 (307)

Clearance of proteoglycan from joint cavities. [PDF]

open access: yesAnnals of the Rheumatic Diseases, 1987
The rate of loss from the synovial cavity of proteoglycan subunit, a major constituent of cartilage, has been measured in rabbits with and without experimental arthritis. The effect of aggregation between proteoglycan and hyaluronic acid upon the rate of elimination has also been investigated.
D P, Page-Thomas   +3 more
openaire   +2 more sources

Synthesis of clearance for a kinematic pair to prevent an overconstrained linkage from becoming stuck [PDF]

open access: yesMechanical Sciences, 2023
Mechanisms are prone to stuttering or even jamming due to the deformation of components, especially for overconstrained linkages for which geometric conditions must be strictly satisfied.
J. Qi, Y. Gao, F. Yang, F. Yang
doaj   +1 more source

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

Dynamic Characteristics Analysis of an Assembly Robot for a Wine Box Base Considering Radial and Axial Clearances in a 3D Revolute Joint

open access: yesApplied Sciences, 2023
Precisely fitting the bottom sticker of the wine box base to the base model with glue is an important process of the wine box base production line. The influence of joint clearance in the assembly robot on the assembly precision of wine box bases is ...
Yuan Wang   +4 more
doaj   +1 more source

Research on Dynamic Characteristics of Flap Actuation System Considering Joint Clearance and Flexibility

open access: yesMachines, 2022
The flight control effects and flight quality of the aircraft are influenced by the flap actuation system directly. The main motivation of this research is to develop a rigid-flexible model of the flap actuation system with clearance and to explore the ...
Qi Wan   +4 more
doaj   +1 more source

3D Formulation for Revolute Clearance Joints [PDF]

open access: yes, 2016
In this work, a general and comprehensive methodology for the modeling and analysis of spatial multibody systems with revolute clearance joints is presented. The proposed formulation considers the journal and the bearing elements as two cylindrical colliding bodies.
Marques, Pedro Filipe Lima   +3 more
openaire   +2 more sources

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   +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

Dynamics of Multibody Systems With Spherical Clearance Joints [PDF]

open access: yesJournal of Computational and Nonlinear Dynamics, 2005
This work deals with a methodology to assess the influence of the spherical clearance joints in spatial multibody systems. The methodology is based on the Cartesian coordinates, with the dynamics of the joint elements modeled as impacting bodies and controlled by contact forces. The impacts and contacts are described by a continuous contact force model
Flores, Paulo   +3 more
openaire   +3 more sources

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

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