Results 11 to 20 of about 17,490 (206)
Advances in Mechanical EngineeringTime-varying meshing stiffness is one of the important excitations of gear transmission system, and its accurate calculation is an important basis for gear dynamics research.
Hongyuan Zhang, Shuo Li, Hongyun Sun
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Finite element based surface roughness study for ohmic contact of microswitches [PDF]
, 2012 Finite element method (FEM) is used to model ohmic contact in microswitches. A determinist approach is adopted, including atomic force microscope (AFM) scanning real contact surfaces and generating rough surfaces with three-dimensional mesh.
Broue, Adrien +4 more
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Shock and Vibration, 2021 A new dynamic model for a two-input two-path split torque transmission system which considers meshing error, time-varying meshing stiffness, and meshing-in impact is proposed.
Xuan Liu +6 more
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Nonlinear Dynamics, 2023 AbstractPlastic gears have been widely used in fields such as instruments, meters, and automotive electronics In particular, metal-plastic gear pairs are commonly used in the low-speed stages of multi-stage gear transmissions to enhance load capacity and achieve lightweight design.
Yangshou Xiong +4 more
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Study of the Influences of Transient Crack Propagation in a Pinion on Time-Varying Mesh Stiffness [PDF]
Shock and Vibration, 2016 Cracks in a cracked gear may further propagate by a tiny length in a very short time for several reasons, such as material fatigue and load fluctuations. In this paper, this dynamic process is defined as transient propagation of cracks. This research aims to calculate the time-varying mesh stiffness of gears when transient propagation of cracks arises,
Youmin Hu, Jikai Fan, Jin Yu
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Simulation of meshing characteristics of harmonic reducer and experimental verification
Advances in Mechanical Engineering, 2018 This article studies the causes of the time-varying stiffness of harmonic drive gear and the number of meshing teeth and the meshing length under different torques. Multi-pair tooth meshing characterizes the operating process of the harmonic gear reducer.
Jianfeng Ma +3 more
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Jixie chuandong, 2021 When a gear has a pitting fault，the vibration response characteristics caused by its time-varying meshing stiffness change is an important basis for the diagnosis of pitting faults，and an accurate gear geometry model is of great significance for the ...
Chaoyang Jiang, Yanxue Wang, Junjie Lai
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Meso-scale modelling of 3D woven composite T-joints with weave variations [PDF]
, 2019 A meso-scale modelling framework is proposed to simulate the 3D woven fibre architectures and the mechanical performance of the composite T-joints, subjected to quasi-static tensile pull-off loading. The proposed method starts with building the realistic
Long, Andrew, Yan, Shibo, Zeng, Xuesen
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The influence of time-varying mesh stiffness on natural characteristics of planetary gear system
Journal of Physics: Conference Series, 2021 Abstract Modal property is the crucial factor that can influence the vibration characteristics of the planetary gear system. Previous studies used time invariant mesh stiffness (TIMS) to study the natural characteristics. However, with the rotation of the gear, the meshing stiffness will change periodically which will lead to changes of ...
Keming Zhang +3 more
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Study on the Spalling Fault Degradation Mechanism and Dynamic Model of Gear Tooth Surfaces
Jixie chuandong, 2023 Under the action of alternating load, the initial crack on the gear tooth surface would inevitably initiate and gradually evolve into spalling and other faults. It has a serious impact on the transmission system.
Peng Yi +3 more
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