Results 11 to 20 of about 82,241 (71)

A Novel Planning and Tracking Approach for Mobile Robotic Arm in Obstacle Environment

open access: yesMachines, 2023
In this study, a novel planning and tracking approach is proposed for a mobile robotic arm to grab objects in an obstacle environment. First, we developed an improved APF-RRT* algorithm for the motion planning of a mobile robotic arm.
Jiabin Yu   +6 more
doaj   +1 more source

Numerical Study of the Effect of Rail Modelling Method on Train Aerodynamic Performance and Slipstream [PDF]

open access: yesJournal of Applied Fluid Mechanics
The high-speed movement of trains generates train-induced wind, commonly referred to as slipstream, which presents a specific safety concern for passengers and personnel.
Y. Ma, J. Zhang, J. Shi, Y. Cao
doaj   +1 more source

Optimization of the Voltage Total Harmonic Distortion in Multilevel Inverters by Using the Taguchi Method

open access: yesMachines, 2023
A critical reduction in the total harmonic distortion in the output voltage of multilevel inverters can be obtained with an appropriate selection of the angles to switch the power semiconductors at low frequency.
Adolfo R. Lopez   +5 more
doaj   +1 more source

Effects of Different Attack Angles and Guide Vane Numbers on the Vortex-solid Interaction Noise of Axial Flow Fan [PDF]

open access: yesJournal of Applied Fluid Mechanics
This paper utilizes experiments and numerical simulations to investigate the effects of different attack angles of the rotor and the number of guide vanes on the vortex-solid interaction and noise generation of an axial flow fan.
Z. Tu, Y. Li, J. Zhou, Z. Chen
doaj   +1 more source

Two-Speed Transmission Structure and Optimization Design for Electric Vehicles

open access: yesMachines, 2023
The trend in the global automotive industry is moving towards electric vehicles that do not emit exhaust gases and use eco-friendly fuel. Electric vehicles are more eco-friendly compared to internal combustion engine vehicles, as they emit less carbon ...
Wonhyeong Jeong   +4 more
doaj   +1 more source

Numerical investigation of the influences of ridge ice parameters on lift and drag coefficients of airfoils through design of experiments

open access: yesAdvances in Mechanical Engineering
The complexity of ice accretion shapes on aircraft brings challenges in establishing the physical correlations between the geometric parameters of ice and the aerodynamic performances of an airfoil.
Chengyi Zheng   +3 more
doaj   +1 more source

Heat transfer analysis of Walter’s-B flow over a vertical plate by using fractional operator

open access: yesAdvances in Mechanical Engineering
The present study deals with the unsteady Walter’s-B fluid with hybrid fractional derivative namely constant proportional Caputo type with singular kernel.
Mudassar Nazar   +4 more
doaj   +1 more source

Experimental study on the dredging performance of the externally excited oscillating airlift pump

open access: yesAdvances in Mechanical Engineering
Due to the increase of sediment carried by the upstream with years, sediment deposition and hardening gradually aggravated, which has severe impact on the waterway passage and agricultural irrigation.
Dong Hu, Zichen Wang, Peng Lin, Ao Yi
doaj   +1 more source

Seismic fragility analysis of an anchored vertical gas steel storage tank using tri-axial shaking table testing

open access: yesAdvances in Mechanical Engineering
Hydrogen and gas storage tanks installed in facilities are typically vertical cylindrical structures made of steel. To allow for the discharge of stored materials, these tanks are anchored onto concrete blocks with sufficient height. However, this design
Sang-Moon Lee   +3 more
doaj   +1 more source

Novel Design of Variable Stiffness Pneumatic Flexible Shaft Coupling: Determining the Mathematical-Physical Model and Potential Benefits

open access: yesMachines, 2023
Presently, mechanical system vibroisolation is becoming increasingly important. One of the new approaches is semi-active vibroisolation using elements capable of changing a selected mechanical property.
Peter Kaššay   +5 more
doaj   +1 more source

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