Results 71 to 80 of about 16,192 (277)
Investigation of Parametric Instability of the Planetary Gear under Speed Fluctuations
Shock 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
Advanced Functional Materials, EarlyView.Geometry‐driven design of soft cellular metamaterials is systematically investigated by combining experiments, finite element modeling, and statistical prediction. The study quantifies how unit cell geometry and material properties govern stiffness, instability, densification, and energy absorption.
Alice Berardo +4 more
wiley +1 more source
Influence of Asymmetric Mesh Stiffness on Dynamics of Spiral Bevel Gear Transmission System [PDF]
, 2010 An 8-DOF (degrees-of-freedom) nonlinear dynamic model of a spiral bevel gear pair which involves time-varying mesh stiffness, transmission error, backlash, and asymmetric mesh stiffness is established.
Li Guiyan, Li Yinong, Zheng Ling
core +1 more source
Dynamic Model of Spur Gear Pair with Modulation Internal Excitation
International Journal of Rotating Machinery, 2017 In the actual measurements, vibration and noise spectrum of gear pair often exhibits sidebands around the gear mesh harmonic orders. In this study, a nonlinear time-varying dynamic model of spur gear pair was established to predict the modulation ...
Zhong Wang +3 more
doaj +1 more source
Biodegradable and Biocompatible Functional Polymers for Biomedical Applications
Advanced 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
Effects of Time-Varying Mesh Stiffness, and its Modifications, on Planetary Gear Dynamics [PDF]
, 2017 Time-varying mesh stiffness in gears has been found to be the primary cause for vibration in gears. This parametric excitation opens up bands of unstable regions of frequency, rather than just isolated resonances.
Mitra, Eeshan
core
Advanced Functional Materials, EarlyView.A bio‐inspired biopolymeric implantable drug delivery platform enables localized and sustained release of 7‐ethyl‐10‐hydroxycamptothecin (SN‐38) in solid tumor treatment. The three‐dimensional (3D) structured crosslinked‐chitosan implants are fabricated via 3D‐printed molds and provide drug release over 3 months, significantly inhibiting tumor growth ...
Mercedes Lozano‐Garcia +12 more
wiley +1 more source
Dynamics of planetary drivetrains accounting for time-varying mesh stiffness [PDF]
Planetary gear trains (PGTs) are widely used due to their exceptional load distribution ability which significantly improves their reliability. Despite this, PGTs can be subject to high vibrations as a result of many dynamically interacting bodies and ...
Ocepek, Jakob
core
A finite element modelling methodology for the non-linear stiffness evaluation of adhesively bonded single lap-joints. Part 2, Novel shell mesh to minimise analysis time [PDF]
, 2012 A new modelling methodology is presented that enables the stiffness of adhesively bonded single lap-joints to be included in the finite element analysis of whole vehicle bodies. This work was driven by the need to significantly reduce computing resources
Pearson, Ian T. +3 more
core +1 more source
Advanced 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