Results 21 to 30 of about 39,796 (305)
Performance of a tubular machine driven by an external-combustion free-piston engine
The Journal of Engineering, 2019 Free-piston engines have the potential to offer a compact machine capable of delivering electrical power. In this work, the design and modelling of a linear tubular generator are presented and used to investigate the effect of the electrical machine ...
Nick J. Baker +3 more
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System study of pneumatic exoskeleton rehabilitation manipulator
The Journal of Engineering, 2018 In this study, biological characteristic of manpower is analysed and then the structural of exoskeleton rehabilitation manipulator is designed base on the thought of modular. First, the overall assembly drawing is drawn by SolidWorks.
Xudong Ma, Ruibo Yuan, Sizhong Fang
doaj +1 more source
The Journal of Engineering, 2018 Comparative investigation on friction and wear properties of SiC, Si(3)N(4), Al(2)O(3), and ZrO(2) lubricated with seawater was carried out on a ring-on-ring contacted tribological test apparatus, and their worn surfaces were observed by an ultra-depth ...
Zhenhua Zhang +4 more
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The Journal of Engineering, 2018 Based on the theories of heat transfer and the method of computational fluid dynamics, a liquid–solid mathematical model of heat transfer of an axial piston hydraulic motor pump is constructed in this study.
Dianrong Gao +5 more
doaj +1 more source
Rekayasa, 2023 The need for electrical energy is very high, but fossil power plants are running low. Consequently, innovations in alternative energy sources are increasing, including sea waves.
Fideryan Axel Pratama +2 more
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The Three-Dimensional Structure of Cassiopeia A [PDF]
, 2009 We used the Spitzer Space Telescope's Infrared Spectrograph to map nearly the entire extent of Cassiopeia A between 5-40 micron. Using infrared and Chandra X-ray Doppler velocity measurements, along with the locations of optical ejecta beyond the forward
Allen, Glenn E. +11 more
core +3 more sources
Programming piston displacements for constant flow rate piston pumps with trigonometric transition functions [PDF]
Mechanical Sciences, 2021 An analytical method for programming piston displacements for constant flow rate piston pumps is presented. A total of two trigonometric transition functions are introduced to express the piston velocities during the transition processes, which can ...
Z. Tian, Z. Tian, X. Lin, X. Lin
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Influence of Piston Number on Churning Losses in Axial Piston Pumps
Chinese Journal of Mechanical Engineering, 2022 Raising the rotational speed of an axial piston pump is useful for improving its power density; however, the churning losses of the piston increase significantly with increasing speed, and this reduces the performance and efficiency of the axial piston ...
Ying Li +4 more
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An Empirical Model for the Churning Losses Prediction of Fluid Flow Analysis in Axial Piston Pumps
Micromachines, 2021 The manufacturing development of axial piston pumps usually takes the trend of high speed and miniaturization, and increases power density. Axial piston pumps are usually characterized as high speed to improve the power density; thus, high-speed churning
Ying Li, Xing Chen, Hao Luo, Jin Zhang
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Casimir force between integrable and chaotic pistons
, 2010 We have computed numerically the Casimir force between two identical pistons inside a very long cylinder, considering different shapes for the pistons. The pistons can be considered as quantum billiards, whose spectrum determines the vacuum force.
Alejandro G. Monastra +14 more
core +1 more source