Results 21 to 30 of about 1,297,449 (284)

Theoretical Analysis and Optimum Design of High Speed Air Film Thrust Bearings

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
Hydrodynamic air film thrust bearings are widely used for very high speed, lightly loaded rotating machinery such as gas expander, compressor, gyroscope and business machines, etc. In the design of hydrodynamic air film thrust bearings, it is of cardinal
Hiromu HASHIMOTO   +2 more
doaj   +1 more source

A New Flexure Revolute Joint with Leaf springs and Its Application to Large Workspace Parallel Robot

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
This paper presents a flexure revolute joint with a large range of motion which can be used as a joint in a parallel robot with a large workspace. We proposed a new structure of flexure revolute joint.
Keiji YONEMOTO   +3 more
doaj   +1 more source

Research and development of new variable compression ratio (VCR) engine mechanism (2nd Report, Dynamics analysis and vibration experiment of VCR engine mechanism)

open access: yesNihon Kikai Gakkai ronbunshu, 2019
In order to improve the efficiency of combustion engines, variable compression ratio (VCR) engine is researched. VCR engine changes the compression ratio according to its mechanical configuration. One of the solutions to construct VCR engine is the multi-
Sadatomo KURIBAYASHI   +1 more
doaj   +1 more source

High speed operation design considerations for fractional slot axial flux PMSM [PDF]

open access: yes, 2015
This paper discusses intensively the design considerations for the fractional slot axial flux permanent magnet synchronous (AFPMSMs) in order to work efficiently in the constant power speed range, also known as the field weakening (FW) region.
Hemeida, Ahmed   +2 more
core   +2 more sources

Simulation of rolling contact fatigue strength for traction drive elements (comparison with fatigue test)

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
A simulation of the rolling contact fatigue strength of a traction drive element was developed. This simulation accounts for both the distribution of sizes of inclusions in the element material and the influence of traction forces at the element surface.
Yukihito NARITA   +4 more
doaj   +1 more source

Effects of bearing clearance and atmospheric temperature on performance of pinion bearings of railway vehicles

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
In Japan, most of the gear units for transmitting driving force in railway vehicles employ one-stage speed reducers. The gear unit is composed of a pinion connected to a traction motor via a coupling mechanism, a gear installed on an axle, and a gear ...
Ken TAKAHASHI   +2 more
doaj   +1 more source

Comparison of motor stator teeth built of soft magnetic composite and laminated silicon steel sheets in an axial flux permanent magnet synchronous machine [PDF]

open access: yes, 2015
This paper compares the iron losses generated by the concentrated excitation windings for the axial flux permanent magnet synchronous machine stator core elements constructed with laminated silicon steel sheets and soft magnetic composites. The two types
De Gersem, Herbert   +2 more
core   +2 more sources

A SyR and IPM machine design methodology assisted by optimization algorithms [PDF]

open access: yes, 2012
The design optimization of synchronous reluctance (SyR) machine and its extension to internal permanent magnet (IPM) motors for wide speed ranges is considered in this paper by means of a Finite Element Analysis-based multi-objective genetic algorithm ...
Armando, Eric Giacomo   +3 more
core   +1 more source

Design and testing of a contra-rotating tidal current turbine [PDF]

open access: yes, 2005
A contra-rotating marine current turbine has a number of attractive features: nearzero reactive torque on the support structure, near-zero swirl in the wake, and high relative inter-rotor rotational speeds.
Clarke, J. A.   +3 more
core   +4 more sources

Research and development of cone to cone type CVT (1st Report, Fundamental structure, speed change mechanism and design of CTC-CVT)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Traction drive is a low noise and a low vibration and has the feature of being able to make up a continuously variable transmission(CVT). For the traction drive type CVT, various structures have been developed.
Hidenori KOMATSUBARA   +1 more
doaj   +1 more source

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