Results 1 to 10 of about 23,615,443 (297)

Study on the method of analyzing the time-variant internal mesh stiffness of helical gears considering the flexibility of the gear ring

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2023
In a 9-speed transmission, as a key participant of a planetary wheel system, the gear ring will be subjected to elastic deformation as a result of the meshing action, affecting the smoothness of the transmission.
Shi WU   +3 more
doaj   +1 more source

Forecasting method of clean energy development potential considering sector coupling [PDF]

open access: yesE3S Web of Conferences, 2021
Sector coupling includes not only the coupling within energy sectors such as electricity, heat and gas, but also the coupling between energy sector and transportation sector, construction sector and industrial sector. This article introduces a method for
Zhu Yu   +4 more
doaj   +1 more source

Analytical Model of Gear Thermal Stiffness Based on the Potential Energy Method

open access: yesApplied Sciences, 2023
Stiffness is the main internal excitation of gear system vibration and is the basis for studying the static and dynamic characteristics of the system. Based on the relationship between thermal stress and strain in plane strain theory and combined with ...
Yanbing He, Haibo Yang
doaj   +1 more source

Mesh stiffness calculation and vibration analysis of the spur gear pair with tooth crack, considering the misalignment between the base and root circles

open access: yesInternational Journal of Mechanical System Dynamics, 2021
An improved variable cross‐section cantilever beam model for evaluating the time‐varying mesh stiffness (TVMS) of the perfect gear tooth is developed in which the tooth number of driving gear is less than 42 and that of driven is more than 42.
Jingyu Hou   +4 more
doaj   +1 more source

Investigation on Dynamic Characteristics of Spur Gear Transmission System with Crack Fault

open access: yesMachines, 2022
To study the dynamic characteristics of spur gears with crack faults, it is essential to establish the meshing stiffness model accurately. In this paper, the time-varying meshing stiffness (TVMS) model and load-sharing ratio (LSR) model of spur gears ...
Fei Ren   +3 more
doaj   +1 more source

Variational Methods for Atoms and the Virial Theorem

open access: yesAtoms, 2022
In the case of the one-electron Dirac equation with a point nucleus, the virial theorem (VT) states that the ratio of the kinetic energy to potential energy is exactly −1, a ratio that can be an independent test of the accuracy of a computed solution ...
Charlotte Froese Fischer   +1 more
doaj   +1 more source

Analysis of Kinetic Energy Recovery Systems in Electric Vehicles

open access: yesVehicles, 2023
The recovery of kinetic energy (KER) in electric vehicles was analyzed and characterized. Two main systems were studied: the use of regenerative brakes, and the conversion of potential energy.
Carlos Armenta-Déu, Hernán Cortés
doaj   +1 more source

A development potential assessment method for clean energy stations

open access: yesFrontiers in Energy Research, 2022
Clean energy is expected to enter a new stage of large-scale development along with the growing demand for building regional clean energy stations.
Huawei Chao   +6 more
doaj   +1 more source

A Detailed Investigation of Gear Body-Induced Tooth Deflections and Development of an Improved Analytical Solution

open access: yesApplied Sciences, 2020
Many researchers have developed analytical methods to evaluate gear meshing stiffness. Some of these methods ignored the effect of the gear body while others used a simplified model to consider its effect. Until now, a detailed investigation of gear body-
Hongsheng Zhang   +4 more
doaj   +1 more source

Accuracy of the new modified Morse potential energy function for ground and excited states of diatomic molecules

open access: yesPhysics Open, 2023
This paper presents a detailed study on the performance of the new modified Morse potential in representing the vibrational motion of several diatomic molecules.
S.U. Lotliker   +4 more
doaj   +1 more source

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