Results 41 to 50 of about 1,070,708 (345)

Measurement of Stress Waves Propagation in Percussive Drilling

Sensors, 2021
This work describes the results of a test campaign aimed to measure the propagation of longitudinal, torsional, and flexural stress waves on a drill bit during percussive rock drilling.
Diego Scaccabarozzi, Bortolino Saggin
doaj   +1 more source

Development of a torsional vibration suppression device using permanent magnets

Nihon Kikai Gakkai ronbunshu, 2021
Dual mass flywheel (DMF) dampers are conventionally used for torsional vibration suppression in automobile powertrains. The torsional vibration in powertrains has increased in recent years owing to the widespread downsizing of internal combustion engines
Tomohiro MIYABE, Norio YONEZAWA, Masafumi NANBA, Yoshitaka SOGA   +3 more
doaj   +1 more source

Radiative activity of magnetic white dwarf undergoing Lorentz-force-driven torsional vibrations

, 2011
We study radiative activity of magnetic white dwarf undergoing torsional vibrations about axis of its own dipole magnetic moment under the action of Lorentz restoring force. It is shown that pulsating white dwarf can convert its vibration energy into the
I. V. MOLODTSOVA, J. W. YU, Molodtsova I. V., R. X. XU, S. I. BASTRUKOV   +4 more
core   +1 more source

Torsional nodeless vibrations of quaking neutron star restored by combined forces of shear elastic and magnetic field stresses

, 2008
Within the framework of Newtonian magneto-solid-mechanics, relying on equations appropriate for a perfectly conducting elastic continuous medium threaded by a uniform magnetic field, the asteroseismic model of a neutron star undergoing axisymmetric ...
Aki, Bastrukov, Chandrasekhar, Chanmugam, D. V. Podgainy, Ferraro, Franco, G. -T. Chen, Griffiths, H. -K. Chang, I. V. Molodtsova, Israel, Lay, Ledoux, Mestel, Parker, Piro, S. I. Bastrukov, Schwarzschild, Watts   +19 more
core   +1 more source

Surface response of spherical core-shell structured nanoparticle by optically induced elastic oscillations of soft shell against hard core

, 2009
The optically induced oscillatory response of a spherical two-component, shell-core structured, nanoparticle by nodeless elastic vibrations of soft peripheral shell against hard and dynamically immobile inner core is considered.
Bertsch G. F., D. V. PODGAINY, H.-K. CHANG, I. V. MOLODTSOVA, P.-Y. LAI, S. I. BASTRUKOV, Ye Z.   +6 more
core   +1 more source

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

Influences of the Stiffness and Damping Parameters on the Torsional Vibrations’ Severity in Petroleum Drilling Systems

Energies
The torsional, lateral, and axial vibrations that occur during drilling operations have negative effects on the drilling equipment. These negative effects can cause huge economic impacts, as the failure of drilling tools results in wasted materials, non ...
Mohamed Zinelabidine Doghmane
doaj   +1 more source

Exploiting Cyclic Angle-Dependency in a Kalman Filter-Based Torque Estimation on a Mechatronic Drivetrain

Actuators, 2022
Torsional vibrations play a critical role in the design and operation of a mechanical or mechatronic drivetrain due to their impact on lifetime, performance, and cost.
Thijs Van der Veken, Jan Croes, Matteo Kirchner, Jonathan Baake, Wim Desmet, Frank Naets   +5 more
doaj   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

THE DIAGNOSTICS OF VISCOTIC DUMPERS OF TORSIONAL VIBRATIONS [PDF]

Scientific Journal of Silesian University of Technology. Series Transport, 2014
The general problems connected with the vibrations of crankshafts with a pay particular attention to the torsional vibrations are discussed in the paper.
Wojciech HOMIK
doaj