Results 31 to 40 of about 2,188 (260)
Transport, 2022 Rail corrugation is usually generated in modern railway transportations, such as high-speed railway, urban railway, and heavy-haul railway. It is one of the major excitations to the wheel–rail dynamic interaction, which will cause extra vibration and noise, failures, or even risk of derailment to the vehicle and its components.
Chen, Zaigang +3 more
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Advanced Engineering Materials, EarlyView.The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ +19 more
wiley +1 more source
Jixie chuandong, 2019 Aiming at the problem of time-varying friction in the meshing process of spur gear pair, the meshing model of spur gear pair is established, and the relative sliding velocity, rolling speed, sliding-rolling ratio, comprehensive radius of curvature and ...
Tao Zhang +3 more
doaj
Applied SciencesTime-varying mesh stiffness (TVMS) of the internal mesh transmission is a significant source of excitation that causes vibration and noise in planetary gear systems, and is also an important parameter in dynamics analysis. Currently, the calculation of mesh stiffness for internal gear pairs primarily relies on finite element simulation, and there still
Jubo Li +3 more
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Advanced Engineering Materials, EarlyView.Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami +4 more
wiley +1 more source
Dynamic Analysis of Helical Gears With Sliding Friction and Gear Errors
IEEE Access, 2018 In helical gears, the meshing stiffness fluctuation caused by the time-varying contact lines and gear errors is a main factor affecting the dynamic characteristics of the helical gears.
Wenchao Mo, Yinghou Jiao, Zhaobo Chen
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Time-varying mesh stiffness of gears under interfacial characteristic effects
Advances in Engineering Research Possibilities and ChallengesTo investigate the variation characteristics of gear time-varying mesh stiffness under asperity-dominated contact, utilizing the geometric relationship formula for double-tooth engagement and surface topography, the fractal theory was employed to describe the gear profile.
Hao Wu, Hanjun Jiang, Delong Shao
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Advanced Engineering Materials, EarlyView.This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser +3 more
wiley +1 more source
Time-varying Mesh Stiffness Calculation of Planetary gear based on Improved Energy Method
Jixie chuandong, 2018 The time-varying meshing stiffness is an important parameter of the planetary gear failure mechanism. In considering the relationship between the base circle and the dedendum circle under the condition of the number of teeth for parameters,an improved ...
Zhang Huiling
doaj
Laser‐Induced Graphene from Waste Almond Shells
Advanced Functional Materials, EarlyView.Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova +9 more
wiley +1 more source