Results 61 to 70 of about 360,412 (305)

Mechanics of a `simple' ear: tympanal vibrations in noctuid moths [PDF]

Journal of Experimental Biology, 2007
SUMMARYAnatomically, the ears of moths are considered to be among the simplest ears found in animals. Microscanning laser vibrometry was used to examine the surface vibrations of the entire tympanal region of the ears of the noctuid moths Agrotis exclamationis, Noctua pronuba, Xestia c-nigrum and Xestia triangulum. During stimulation with ultrasound at
Windmill, J.F.C., Fullard, J., Robert, D.   +2 more
openaire   +3 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

A Vibration Isolation System Using the Negative Stiffness Corrector Formed by Cam-Roller Mechanisms with Quadratic Polynomial Trajectory

Applied Sciences, 2020
The vibration isolator equipped with a negative stiffness corrector (NSC) excels at vibration isolation, but its stiffness often presents complex nonlinearity which needs to be approximated in calculation.
Mengnan Sun, Zhixu Dong, Guiqiu Song, Xingwei Sun, Weijun Liu   +4 more
doaj   +1 more source

Scaling behavior in the convection-driven Brazil-nut effect

, 2012
The Brazil-nut effect is the phenomenon in which a large intruder particle immersed in a vertically shaken bed of smaller particles rises to the top, even when it is much denser. The usual practice, while describing these experiments, has been to use the
Bandyopadhyay, Ranjini, Dhar, Abhishek, Hejmady, Prakhyat, Sabhapandit, Sanjib   +3 more
core   +2 more sources

Enhanced vibrational energy harvesting using non-linear stochastic resonance [PDF]

, 2008
Stochastic resonance has seen wide application in the physical sciences as a tool to understand weak signal amplification by noise. However, this apparently counter- intuitive phenomenon does not appear to have been exploited as a tool to enhance ...
Almog, Benzi, C.R. McInnes, Cartmell, D.G. Gorman, Fauve, Gorman, Klamecki, Landa, Longtin, M.P. Cartmell, McInnes, McNamara, Roundy, Roundy, Rouse, Sodano, Stephen, Wellens   +18 more
core   +1 more source

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

Advanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

Nonlinear modal interactions in clamped-clamped mechanical resonators

, 2010
A theoretical and experimental investigation is presented on the intermodal coupling between the flexural vibration modes of a single clamped-clamped beam.
A. N. Cleland, H. J. R. Westra, H. S. J. van der Zant, M. Poot, W. J. Venstra   +4 more
core   +1 more source

Dynamic Modeling and Simulation of a Rotating Single Link Flexible Robotic Manipulator Subject to Quick Stops [PDF]

, 2014
Single link robotic manipulators are extensively used in industry and research operations. The main design requirement of such manipulators is to minimize link dynamic deflection and its active end vibrations, and obtain high position accuracy during its
Dupac, Mihai, Noroozi, Siamak
core   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

A two-degree-of-freedom spherical parallel mechanism with low-frequency vibration isolation

Journal of Hebei University of Science and Technology, 2016
Aiming at the requirements of the vibration isolation with two rotational degrees of freedom under specific conditions, a spherical 2-DOF parallel vibration isolation platform is proposed based on the theory of spherical parallel mechanism. From the view
Xiaowei ZHANG, Xuechao DUAN, Guojun LENG, Hong BAO   +3 more
doaj   +1 more source