Results 31 to 40 of about 94,991 (291)
Clearance of proteoglycan from joint cavities. [PDF]
Annals 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
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Error Uncertainty Analysis in Planar Closed-Loop Structure with Joint Clearances
Metals, 2021 For planar closed-loop structures with clearances, the angular and positional error uncertainties are studied. By using the vector translation method and geometric method, the boundaries of the errors are analyzed.
Yushu Yu, Jinglin Li, Xin Li, Yi Yang
doaj +1 more source
Friction, 2019 A novel green lubricating oil additive (carbon quantum dot (CQD) particle-doped nickel (Ni-CQD)) was synthesized from citric acid and nickel acetate. The effects of CQD and Ni-CQD nanoparticles on the tribological behaviors of polyethylene glycol (PEG200)
Zhiqiang Tu +8 more
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Dynamics and Wear Prediction of Mechanisms Considering Multiple Clearances and Coatings
Lubricants, 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
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International 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
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Nonlinear Dynamics and Control of Crank-Slider Mechanism with Multiple Clearance Joints [PDF]
Journal 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
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Sensors, 2023 Traditional stiffness modeling methods do not consider all factors comprehensively, and the modeling methods are not unified, lacking a global stiffness model.
Sen Wang +5 more
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The Effects of Joint Clearance on the Dynamics of the 3-RPR Planar Parallel Manipulator [PDF]
International Journal of Advanced Design and Manufacturing Technology, 2018 In reality, clearances in the joints are inevitable due to the defects arising from manufacturing process, design tolerances, and wearing after a certain working period.
Seyyed Mojtaba Varedi-Koulaei +1 more
doaj
Nonlinear Characteristics of Revolute Joints with Clearance
Journal of Aerospace Technology and Management, 2013 http://dx.doi.org/10.5028/jatm.v5i3.236 The nonlinear contact characteristic of revolute joint with clearance can degrade the performance of deployable structure. In this article, tensile and compressive tests are adopted to investigate the accuracies of the simplest conformal model and nonconformal model for contact, which are used to calculate the ...
Rong-qiang, Liu +3 more
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Identifying joint clearance via robot manipulation
, 2017 Inaccuracy in robot manipulation is a result of various uncertainties. Most methods reduce operation errors by calibrating robot parameters, with little attention on understanding the uncertainty sources in the process.
Kuan-Lin Li +2 more
core +1 more source