Results 21 to 30 of about 47,409 (286)

Using Computer Simulation to Investigate Which Joint Angle Changes Have the Most Effect on Ball Release Speed in Overarm Throwing

open access: yesApplied Sciences, 2019
Efficient throwing mechanics is predicated on a pitcher’s ability to perform a sequence of movements of body segments, which progresses from the legs, pelvis, and trunk to the smaller, distal arm segments.
Nurhidayah Omar   +2 more
doaj   +1 more source

A New Method for Measuring the Rotational Angles of a Precision Spherical Joint Using Eddy Current Sensors

open access: yesSensors, 2020
Precision spherical joint is a spherical motion pair that can realize rotation with three degrees of freedom. This joint is widely used in robots, parallel mechanisms, and high-end medical equipment, as well as in aerospace and other fields. However, the
Penghao Hu   +5 more
doaj   +1 more source

Generation Mechanism of Linear and Angular Ball Velocity in Baseball Pitching

open access: yesProceedings, 2018
The purpose of this study was to quantify the functional roles of the whole-body’s joint torques including fingers’ joints in the generation of ball speed and spin during baseball fast-ball pitching motion. The dynamic contributions of joint torque term,
Sekiya Koike   +2 more
doaj   +1 more source

Mixed Lubrication Simulation of Hydrostatic Spherical Bearings for Hydraulic Piston Pumps and Motors

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2008
Mixed and fluid film lubrication characteristics of hydrostatic spherical bearings for swash-plate-type axial piston pumps and motors are studied theoretically under non-steady-state conditions.
Toshiharu KAZAMA
doaj   +1 more source

Characteristic analysis and motion control of a novel ball double-screw hydraulic robot joint

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
The hydraulic joint is the key driving component of a robot. To reduce the joint size of the hydraulic robot, and improve the control accuracy and dynamic response performance, this paper proposes a novel joint structure and control method of a ball ...
Jie Shao   +3 more
doaj   +1 more source

Investigation of Suspension Ball Joint Pull Out Force Based on FEA Method and Experimental Study

open access: yesAcademic Perspective Procedia, 2018
Suspension ball joints are always used to connect the control arms to the knuckle since they are the only joints which allow three degrees of rotational freedom.
A. Rutci, F. Eren
semanticscholar   +1 more source

Design of a Semi-Robotic Knee Arthroscopy Support System Utilizing a Novel Ball Joint Braking Mechanism

open access: yesMachines
To alleviate the poor ergonomics which surgeons suffer during knee arthroscopy, a semi-robotic device with a novel ball joint braking mechanism was designed for intra-operative assistance. A slit ball joint assembly was developed to transmit the clamping
Thai Hua   +4 more
doaj   +1 more source

Study on Collision Dynamics Model and Multi-Body Contact Forces of Ball Cage Flexible Joint Considering Clearance

open access: yesMachines, 2023
Flexible joints are widely used in ‘soft’ touching and holding, and they represent the main component of ultra-short radius drilling tools. The analysis of contact and motion characteristics is an essential issue in the design and development stage of ...
Xiuxing Zhu   +6 more
doaj   +1 more source

The Controllable Ball Joint Mechanism

open access: yesJSME International Journal Series C, 2006
A controllable ball joint mechanism with three rotational degrees of freedom is proposed in this paper. The mechanism is composed of three bevel gears, one of which rotates with respect to a fixed frame and the others rotate with respect to individual floating frames.
TUNG, Yung Cheng   +2 more
openaire   +2 more sources

Classification of failures and malfunctions of passenger cars with the aim of creating a technical condition assessment system [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета
The article provides an overview and classification of motor vehicle faults (class: passenger cars). The cause-and-effect relationships «Fault-RTA» are studied.
Tarichko V.I., Ratnikov S.A.
doaj   +1 more source

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