Results 21 to 30 of about 2,286,730 (346)

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

Dynamic Performance of Planetary Gear Joint for Satellite Antenna Driving Mechanism Considering Multi-Clearance Coupling

open access: yesEnergies, 2021
Dynamic pointing and tracking accuracy are the most relevant indicators of dynamic performance for the satellite antenna driving mechanism. Multi-clearance coupling in the joints will incur high-frequency vibration and dynamic errors of the system ...
Jianchao Han, Lei Liang, Yang Zhao
doaj   +1 more source

Impact of standard and unexpected bolt-hole-washer tolerances on the performance of pinned and torqued joints in CFRP composites

open access: yesAlexandria Engineering Journal, 2023
This study aimed to investigate the impact of some practical assembly errors on the performance of composite joints with M6 bolts in quasi-isotropic CFRP laminates with stacking sequence of [±45/0/90]2S, which are increasingly used in aerospace and ...
U.A. Khashaba
doaj   +1 more source

POLYCENTRIC EXOPROSTHETIC KNEE JOINTS – EXTENT OF SHORTENING DURING SWING PHASE

open access: yesCanadian Prosthetics & Orthotics Journal, 2020
BACKGROUND: An often assumed advantage of polycentric knee joints compared to monocentric ones is the improved ground clearance during swing phase due to the geometric shortening of the lower leg segment (LLS).
Thomas Maximilian Köhler   +2 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

Design Framework for Motion Generation of Planar Four-Bar Linkage Considering Clearance Joints and Dynamics Performance

open access: yesMachines, 2022
In this paper, we present a novel design framework to connect linkage synthesis with dynamics performance of the linkage. The aim of the design framework is to improve the dynamics performance of the mechanism through linkage design, instead of improving
Xueao Liu, Jianzhong Ding, Chunjie Wang
semanticscholar   +1 more source

Modeling and simulation for wear prediction in planar mechanical systems with multiple clearance joints

open access: yesNonlinear dynamics, 2021
The main goal of this work is to develop a comprehensive methodology for predicting wear in planar mechanical systems with multiple clearance joints and investigating the interaction between the joint clearance, driving condition, and wear.
Bo Li, Min Wang, C. Gantes, U-Xuan Tan
semanticscholar   +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 Modeling and Analysis of Thrust Reverser Mechanism Considering Clearance Joints and Flexible Component

open access: yesAerospace, 2022
As a high-precision motion mechanism, the kinematics and dynamics of cascade thrust reverser are sensitive to the changes of nonlinear factors which are rarely considered in traditional dynamic modeling and optimization.
Jingchao Zhao   +5 more
semanticscholar   +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

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