Results 51 to 60 of about 20,619 (262)

Gear Defect Modeling of a Multiple-Stage Gear Train

open access: yesModelling and Simulation in Engineering, 2011
This study demonstrates the transient and steady state dynamic loading on teeth within a two-stage gear transmission arising from backlash and geometric manufacturing errors by utilizing a nonlinear multibody dynamics software model.
Andrew Sommer, Jim Meagher, Xi Wu
doaj   +1 more source

New Identification Method for Backlash of Gear Transmission Systems [PDF]

open access: yes2018 2nd IEEE Advanced Information Management,Communicates,Electronic and Automation Control Conference (IMCEC), 2018
To achieve precise identification of backlash in gear systems, a new identification method is proposed on the basis of hysteresis backlash model and the describing function method. A Discrete Fourier Transform is used to extract the fundamental components from the system output digital.
Jie Zhang, Heng Zhang, Xinxin Xiao
openaire   +1 more source

Ratchet mechanism Patent [PDF]

open access: yes, 1970
Ratchet mechanism for high speed operation at reduced ...
Dane, D. H.
core   +1 more source

Predefined‐Time Dynamic Surface Control of Tank Horizontal Stabilization System With Disturbance

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern new tanks are difficult to achieve high precision control of the horizontal stabilization system due to electromechanical coupling and road surface disturbance during high‐speed combat. A predefined‐time dynamic surface controller (DSCPT) is proposed for the fast stabilization and strong disturbance problems of the tank horizontal ...
Zhicheng Fan   +5 more
wiley   +1 more source

Frequency and Vibration Characteristics of High-Speed Gear-Rotor-Bearing System with Tooth Root Crack considering Compound Dynamic Backlash

open access: yesShock and Vibration, 2019
Considering the microstructure of tooth surface and the dynamic characteristics of the vibration responses, a compound dynamic backlash model is employed for the gear transmission system.
Jie Liu, Weiqiang Zhao, Weiwei Liu
doaj   +1 more source

Effect of Variations in the Ring Thickness on the Dynamic Performance of the Bimetal Gears

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study used a six‐degrees‐of‐freedom dynamic model to analyze the dynamic response of bimetal spur gears. Aluminum alloy forms the core of the bimetal gears, and a uniform‐thickness steel ring surrounds the teeth. Gear mesh stiffness of bimetal gears and the transmission error have been assessed using a numerical approach based on finite ...
Bikramjit Singh   +2 more
wiley   +1 more source

Calculation of Meshing Backlash for Cycloidal-pin Gear of RV Reducer Under the Influence of Tooth Profile Deviation

open access: yesJixie chuandong, 2019
The meshing backlash of cycloidal-pin gear has a great influence on the meshing transmission performance and motion accuracy of RV reducer, so the accurate calculation of meshing backlash is an important content in the study of contact characteristics of
Tianxing Li   +4 more
doaj  

Investigation on Impact Behavior of Thermoplastic Composites: A Ply‐Level Numerical Methodology for Impact‐Resistance Design

open access: yesPolymer Composites, EarlyView.
Experimental and numerical investigation on impact‐tolerance efficient evaluation of soft TPU composites. ABSTRACT This study combines experimental characterization and numerical modeling to investigate the impact behavior of aramid fiber–reinforced composites incorporating a thermoplastic polyurethane (TPU) matrix. Low‐velocity impact (LVI) tests were
Shunqi Zhang   +6 more
wiley   +1 more source

极端环境下滤波齿轮传动侧隙分析

open access: yesJixie chuandong, 2012
The backlash of the filter gear using for aerospace can be influenced by the extreme environment,and the size of the backlash is one of the most important factors that influence gear transmission accuracy.Based on the thermal equilibrium and heat ...
马玲, 王家序, 陈杰, 韩念龙
doaj  

Doing More With Less: Cutting Food Loss and Waste in the EU and Its Impact on Food Security

open access: yesSustainable Development, EarlyView.
ABSTRACT In September 2025, the European Parliament and Council signed the law of the Revision of the EU waste framework directive, which includes also reductions for food loss and waste (FLW). This comes at a time of concern over the EU's strategic autonomy for its agrifood sector.
George Philippidis   +3 more
wiley   +1 more source

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