Results 31 to 40 of about 1,390,207 (300)

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

Dynamic Response of Multibody Systems with Multiple Clearance Joints [PDF]

open access: yesJournal of Computational and Nonlinear Dynamics, 2011
A general methodology for the dynamic modeling and analysis of planar multibody systems with multiple clearance joints is presented. The inter-connecting bodies that constitute a real physical mechanical joint are modeled as colliding components, whose dynamic behavior is influenced by the geometric, physical and mechanical properties of the contacting
Flores, Paulo, Lankarani, Hamid M.
openaire   +4 more sources

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

Dynamic Analysis of a Delta Parallel Robot with Flexible Links and Joint Clearances

open access: yesApplied Sciences, 2023
Delta robot is a lightweight parallel manipulator capable of accurately moving heavy loads at high speed and acceleration along a spatial trajectory. This intensive dynamic process may have a significant impact on the end-effector trajectory precision ...
Nadia Cretescu   +2 more
doaj   +1 more source

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

Tribological behaviors of Ni-modified citric acid carbon quantum dot particles as a green additive in polyethylene glycol

open access: yesFriction, 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
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

Error Uncertainty Analysis in Planar Closed-Loop Structure with Joint Clearances

open access: yesMetals, 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

Research on High Precision Stiffness Modeling Method of Redundant Over-Constrained Parallel Mechanism

open access: yesSensors, 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
doaj   +1 more source

Investigation Into the Effect of Joint Clearance on the Dynamics of a Biomechanical Energy Harvesting System

open access: yesIEEE Access, 2023
The existing clearance in the mechanical joints plays a crucial role in the assembly of mechanical systems, allowing the mobility of its components. However, few studies have explored models that consider joint clearance in the case of electromechanical ...
Ludwin Molina Arias   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy