Results 71 to 80 of about 1,388,291 (195)

A Coupled Harmonic Balance-Based Approach for the Non-Linear Dynamics of Spur-Gear Pairs

Vibration
Noise, vibration and harshness analyses are of great interest for the latest developments of the gearboxes of electric vehicles. Gearboxes are now the main source of vibrations, since electric powertrains are much quieter than internal combustion engines.
Giacomo Saletti, Giuseppe Battiato, Stefano Zucca   +2 more
doaj   +1 more source

Generation of a double-crowned involute helical gear with twist-free tooth flanks by a CNC hobbing machine with three synchronous axes

Vietnam Journal of Mechanics, 2017
In the conventional hobbing process, a double-crowned involute helical gear is generated by the hob cutter with parabolic-curve tooth profiles for the cross-profile crowning and varied the center distance between the hob and work gear for the ...
Van-The Tran
doaj   +1 more source

Study on Dynamic Behaviors of Hypoid Gears Under Variable Tidal Current Energy Harvesting Conditions

Machines
This study investigates dynamic behaviors of hypoid gear rotor systems under variable tidal current energy harvesting conditions through numerical simulations and experimental validation. The study examines dynamic responses of a hypoid gear rotor system
Dequan Huang, Yan Li, Xingyuan Zheng, Gang Li   +3 more
doaj   +1 more source

Multi-Point Control for Face-Milled Spiral Bevel Gears with a Predesigned Fourth-Order Motion Curve

Machines
This paper presents an ultimate motion methodology of a face-milling spiral bevel gear pair to synthesize the mating tooth surfaces with a predesigned fourth-order motion curve.
Yuhui Liu, Liping Chen, Gang Li
doaj   +1 more source

Research of the Transmission Error of Planetary Transmission System for Hub Motor

Jixie chuandong, 2017
Taking the planetary transmission system of hub motor as the research object,the kinematic differential equations of the system are established by considering the influence factors of time-varying mesh stiffness,meshing phase and equivalent mesh error ...
Chen Haoran, Qin Xunpeng, Zhang Jiang
doaj  

Effect of Axial Modification on the Meshing Performance of Involute Beveloid Gear Pair

Applied Sciences
In order to enhance the load-bearing capacity of the involute beveloid gear pair, this study proposes research on improving the contact stress through axial modification.
Yongping Liu, Qi Chen, Changbin Dong
doaj   +1 more source

Analysis of the Effect of Three-Dimensional Topology Modification on Temperature Field and Thermal Deformation of Internal Helical Gears Pair

Applied Sciences
The transmission accuracy and meshing performance of the gearbox is determined by the internal helical gears pair. Thermal deformation of internal helical gears pair is derived from sliding friction between the contacting teeth surface, resulting in ...
Gaowei Yao, Gang Liu, Jianxin Su, Hongbin Yang, Mingxuan Jin, Xiao Wei   +5 more
doaj   +1 more source

Transmission of world food price changes to markets in Sub-Saharan Africa: [PDF]

error correction model, food crisis, Food prices, Price transmission, Staple food,
Minot, Nicholas
core  

Multibody Simulation of Helical Gear Noise and Vibration Behavior Using MSC ADAMS

Engineering Proceedings
The premium electric-vehicle market demands exceptionally quiet transmissions because the absence of engine masking makes gearbox noise more perceptible. Virtual NVH (noise, vibration, and harshness) evaluation requires coupling elastic deformation, gear–
Krisztián Horváth, Ambrus Zelei
doaj   +1 more source

Digital Twin Approaches for Gear NVH Optimization: A Literature Review of Modeling, Data Integration, and Validation Gaps

Machines
Quiet drivetrains have become a central requirement in modern electric vehicles, where the absence of engine masking makes even subtle gear tones clearly audible.
Krisztian Horvath, Ambrus Zelei
doaj   +1 more source