Results 81 to 90 of about 63,494 (251)

A Combined Control Strategy for Vibration Mitigations of a Suspension Bridge Induced by Vehicle Braking Force

The Baltic Journal of Road and Bridge Engineering, 2015
In order to mitigate the excessive longitudinal displacement responses of suspension bridge girders induced by vehicle braking force, as one of the possible dynamic loadings, a combined control strategy consisting of viscous dampers and friction pendulum
Meng-Gang Yang, Chun-Sheng Cai, Biao Wei
doaj   +1 more source

Friction-Induced Vibration of a Railway Wheelset-Track System and Its Effect on Rail Corrugation

Lubricants, 2020
In the present study, the effect of the radius of railway curved tracks on the slip of a wheel on a rail is studied. A 3D finite-element model of a wheelset-track system is established when the creep force between the wheel and rail is saturated.
Guangxiong Chen
doaj   +1 more source

Science‐Towards‐Technology Breakthrough in CO2 Electroreduction: Multiphysics, Multiscale, and Artificial Intelligence Insights

Advanced Materials, EarlyView.
Electrochemical CO2RR is a key technology for converting CO2 into chemicals, but there remains a gap between “laboratory science” and “engineering practice” in current research. This review establishes a multi‐scale research framework, encompassing atomic‐level characterization, microenvironment regulation, external field‐assisted optimization, and AI ...
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Application of Spiral Ring Damper for Aeroengine Bevel Gears

Jixie chuandong, 2023
In view of the problem that the vibration stress of the axle driven bevel gear of an aeroengine exceeds the permissible stress, a spiral ring friction damper is designed for the bevel gear.
Wang Yanfeng, Gao Weiqiang, Xu Yongqiang, Ou Daisong   +3 more
doaj  

Soft Ionic and Electronic Triboelectric Nanogenerators: Toward Attachable and Implantable Biomedical Applications

Advanced Materials, EarlyView.
This review provides an overview of triboelectric nanogenerator (TENG)–based biomedical applications by classifying studies into electronic and ionic systems across attachable and implantable platforms. It summarizes key material choices, device structures, and working mechanisms that characterize current TENG‐based research, and outlines six future ...
Kyongtae Choi, Jimin Park, Won Jun Song, Soohwan An, Seonggyu Choe, Byeong‐Rak Keum, Min Young Kim, Dae Hee Hwang, Young‐Geun Park, Sung‐Won Kim, Sangyul Baik, Gwang‐Bum Im, Younghoon Lee   +12 more
wiley   +1 more source

To “Sketch-a-Scratch” [PDF]

, 2015
A surface can be harsh and raspy, or smooth and silky, and everything in between. We are used to sense these features with our fingertips as well as with our eyes and ears: the exploration of a surface is a multisensory experience.
Alan Del Piccolo, Davide Andrea Mauro, Davide Rocchesso, Stefano Delle Monache, Stefano Papetti   +4 more
core   +4 more sources

Analytical Determination of Stick–Slip Whirling Vibrations and Bifurcations in Rotating Machinery

Applied Sciences
In rotating machinery, aerodynamic forces and oil film forces often lead to cross-coupling stiffness. This paper is aimed at studying the stick-slip whirling vibrations induced by the piecewise smooth rotor/stator frictions in a modified flexible rotor ...
Duhui Lu, Mukai Wang, Yeyin Xu, Xinya Wang, Shunzeng Wang   +4 more
doaj   +1 more source

The description of friction of silicon MEMS with surface roughness: virtues and limitations of a stochastic Prandtl–Tomlinson model and the simulation of vibration-induced friction reduction

Beilstein Journal of Nanotechnology, 2010
We have replaced the periodic Prandtl–Tomlinson model with an atomic-scale friction model with a random roughness term describing the surface roughness of micro-electromechanical systems (MEMS) devices with sliding surfaces.
W. Merlijn van Spengen, Viviane Turq, Joost W. M. Frenken   +2 more
doaj   +1 more source

Rotor vibration caused by external excitation and rub [PDF]

, 1982
For turbomachinery with low natural frequencies, considerations have been recently required for rotor vibrations caused by external forces except unbalance one, such as foundation motion, seismic wave, rub and so forth.
Kaga, M., Kikuchi, K., Matsushita, O., Takagi, M.   +3 more
core   +1 more source

Liquid Metal Microrobots for Magnetically Guided Transvascular Navigation

Advanced Materials, EarlyView.
Liquid metal‐based microrobots combine magnetic steering, intrinsic X‐ray visibility and softness, to navigate blood vessels even against flow. Under clinically relevant magnetic fields, liquid metal microrobots roll along vessel walls, cross endothelial barriers, and accumulate in target tissues.
Xiaohui Ju, Roshan Velluvakandy, Xianghua Wu, Miguel Angel Merlos Rodrigo, Zbyněk Heger, Kamila Bendíčková, Jan Frič, Martin Pumera   +7 more
wiley   +1 more source