Results 61 to 70 of about 15,802,205 (308)

Nonlinear Multi-Frequency Dynamics of Wind Turbine Components with a Single-Mesh Helical Gear Train

open access: yesMathematical and Computational Applications, 2018
A complex nonlinear model for a single-mesh helical gear train is developed by including a time-varying mesh stiffness, axial vibrations, torsional vibrations, shaft and bearing damping, generator back EMF (Electromotive Force) and gear backlashes.
Nkongho Ayuketang Arreyndip   +2 more
doaj   +1 more source

Time-varying mesh stiffness calculation and dynamic modeling of spiral bevel gear with spalling defects

open access: yesJournal of Dynamics Monitoring and Diagnostics
Time-varying mesh stiffness (TVMS) is a vital internal excitation source for the spiral bevel gear (SBG) transmission system. Spalling defect often causes decrease in gear mesh stiffness and changes the dynamic characteristics of the gear system, which ...
Keyuan Li   +4 more
semanticscholar   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Multi-Size-Mesh, Multi-Time-Step Algorithm for Noise Computation on Curvilinear Meshes [PDF]

open access: yes, 2013
Aeroacoustic problems are often multi-scale and a zonal refinement technique is thus desirable to reduce computational effort while preserving low dissipation and low dispersion errors from the numerical scheme.
CORRE, Christophe   +3 more
core   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han   +5 more
wiley   +1 more source

车辆传动轴系动态激励及其响应的仿真研究

open access: yesJixie chuandong, 2005
Based on the dynamic contact finite element method,the process of the gears meshing is simulated.As a result,the time-varying mesh stiffness is obtained.Then,the multi-body dynamics model of a certain engine is developed;using this model the dynamic ...
李涛, 覃文洁, 王超
doaj  

Structural Power Composites Based on High Mass Loading Zn‐Ion Hybrid Supercapacitors with Metal Mesh Current Collectors and Aramid Nanofiber/Glass Fiber Composite Electrolytes

open access: yesAdvanced Functional Materials, EarlyView.
A multifunctional structural power composite is developed by integrating high‐mass‐loading Zn‐ion hybrid supercapacitors with metal mesh current collectors and aramid nanofiber‐based composite electrolytes, enabling simultaneous load‐bearing capability and enhanced areal energy storage.
Yuseung Choi   +8 more
wiley   +1 more source

Investigation of Parametric Instability of the Planetary Gear under Speed Fluctuations

open access: yesShock and Vibration, 2017
Planetary gear is widely used in engineering and usually has symmetrical structure. As the number of teeth in contact changes during rotation, the time-varying mesh stiffness parametrically excites the planetary gear and may cause severe vibrations and ...
Xinghui Qiu, Qinkai Han, Fulei Chu
doaj   +1 more source

Bioinspired Co‐Assembly Enables Multiscale Architected Hydrogels for 3D Printing With Integrated Antibacterial and Bioactive Functions

open access: yesAdvanced Functional Materials, EarlyView.
A multicomponent supramolecular hydrogel integrating cell‐adhesive and antibacterial peptides within an alginate‐cellulose nanofibril matrix is developed. Peptide co‐assembly simultaneously strengthens the hydrogel network, improves extrusion printability, and imparts cell‐adhesive and antibacterial functions, offering a versatile platform for ...
Mor Tsuriano‐Zernichov   +4 more
wiley   +1 more source

Dynamics Characteristic Analysis of Involute Gear with Asymmetric Tooth Considering the Influence of Time-varying Stiffness and Backlash

open access: yesJixie chuandong, 2019
To obtain more accurate dynamics change law for asymmetric involute gear, dynamics model of asymmetric involute gear is established by introducing time-varying stiffness and gear backlash.
Qi Chen   +3 more
doaj  

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