Results 71 to 80 of about 15,802,205 (308)
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
Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite
Advanced Functional Materials, EarlyView.The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen +16 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A dynamically actuated reconfigurable topographical surface (DARTS) integrates contact‐mediated bactericidal nanotopography with programmable mechanical actuation to actively disrupt bacterial biofilms. Dynamic surface reconfiguration enhances bacterial killing and suppresses implant‐associated infections in vivo, providing a new strategy for active ...
Mohammad Asadi Tokmedash +4 more
wiley +1 more source
An investigation into the effect of varying plyometric volume on reactive strength and leg stiffness in collegiate rugby players [PDF]
The purpose of this study was to identify the role that low and high volume plyometric loads have on the effectiveness of developing stretch shortening cycle capability in collegiate rugby players.
Jeffreys, Mark A
core +3 more sources
Advanced Functional Materials, EarlyView.A mechanically programmable hydrogel for tissue engineering is developed by modulating the molecular threading density of poly(ethylene glycol) diacrylate‐β‐cyclodextrin (PEGDA‐β‐CD) polyrotaxane and combining it with β‐CD‐modified gelatin. The polyrotaxane‐guided transition from disordered pores to laminar microstructures enables precise tuning ...
Shiyi Chen +10 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A sequential dual‐alignment strategy independently programs the orientation of conductive metal‐organic framework (c‐MOF) microrods and liquid crystals within a composite film. This approach creates an asymmetric bilayer structure that enables precise, multi‐responsive actuation.
Taegyun Hong +5 more
wiley +1 more source
Jixie qiangduAn improved calculation method for the time-varying mesh stiffness of helical gear was proposed based on the potential energy method and the slice integration principle, taking into account the transition curve equation of tooth root.
WU LuJi +3 more
doaj
Research of Load Sharing Performance of Hub Reducer with Considering the Flexible of Planetary Pin
Jixie chuandong, 2020 Taking the distributed electric drive hub reducer as study object，by using the FEA method, the support stiffness of the planetary wheel bearing and the flexible pin is solved.
Li Xuan
doaj
Solving time-varying mesh stiffness of spur gears based on improved potential energy method
Journal of Mechanical Engineering, Automation and Control SystemsMeshing stiffness is an important factor in gear dynamics analysis. At present, there are many ways to calculate the meshing stiffness of gears, and we usually use the potential energy method to solve and calculate the meshing stiffness of healthy ...
Hao Zhang, Hong-Yuan Zhang
semanticscholar +1 more source
Adaptive impedance control for unknown time-varying environment position and stiffness
, 2013 This study is concerned with a new adaptive impedance control strategy to compensate for unknown time-varying environment stiffness and position. The uncertainties are expressed by Function Approximation Technique (FAT), which allows the update laws to ...
Yamaura, Hiroshi +1 more
core