Results 61 to 70 of about 16,116 (280)
Advanced Engineering Materials, EarlyView.This work shows that the mechanical performance of multimaterial digital light processing (DLP) printed thermoset composites is governed by resin compatibility and interfacial design rather than spatial patterning alone. Brittle and ductile resin combinations produced premature interfacial failure, while graded interfaces and mechanically compatible ...
Ahmed M. H. Ibrahim +3 more
wiley +1 more source
Instability analysis in oscillators with velocity-modulated time-varying stiffness - Applications to gears submitted to engine speed fluctuations [PDF]
, 2008 A one degree-of-freedom model is set up which incorporates time-varying mesh stiffness functions and the influence of unsteady input rotations due to engine speed fluctuations.
Velex, Ph., Sika, G.
core +1 more source
Advanced Engineering Materials, EarlyView.This article presents an experimental and numerical modal investigation of composite sandwich structures using surfboards as model systems. By comparing different core materials and reinforcement strategies, the study demonstrates how local stiffeners influence vibrational response and introduce characteristic modal features, highlighting modal ...
Brett Connellan +4 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal +3 more
wiley +1 more source
Stationary responses of gear systems with combined periodically time-varying stiffness and stochastic external excitations [PDF]
, 2017 International audienceThe stationary dynamic response of a geared system with time-varying mesh stiffness subjected to stationary stochastic external excitation is examined in this paper.
Garambois, Pierre +2 more
core +4 more sources
Jixie 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
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
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
Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method
Advanced Engineering Materials, EarlyView.A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
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