Results 11 to 20 of about 4,342 (233)

Eigenfrequency of Hydraulic Systems of Loading Device

open access: yesEPJ Web of Conferences, 2016
Eigenfrequency of hydraulic systems belongs to important dynamic quantities. If the excitation frequency of a given hydraulic system is equal to the system eigenfrequency, high-amplitude pressure and flow pulsations can arise. It has a negative influence
Vašina Martin   +2 more
doaj   +2 more sources

An Approximation-Based Design Optimization Approach to Eigenfrequency Assignment for Flexible Multibody Systems [PDF]

open access: yesApplied Sciences, 2021
The use of flexible multibody simulation has increased significantly over recent years due to the increasingly lightweight nature of mechanical systems.
Roberto Belotti   +3 more
doaj   +3 more sources

Monitoring the mass, eigenfrequency, and quality factor of mammalian cells

open access: yesNature Communications
The regulation of mass is essential for the development and homeostasis of cells and multicellular organisms. However, cell mass is also tightly linked to cell mechanical properties, which depend on the time scales at which they are measured and change ...
Sophie Herzog   +7 more
doaj   +2 more sources

Electro-optic eigenfrequency tuning of potassium tantalate-niobate microresonators

open access: yesAPL Photonics, 2020
Eigenfrequency tuning in microresonators is useful for a range of applications including frequency-agile optical filters and tunable optical frequency converters.
Jan Szabados   +4 more
doaj   +2 more sources

Fundamental Approach for Analysis of Dynamic Characteristics of Fixtures [PDF]

open access: yesEAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 2018
Present work is aimed at research of locating and clamping process of prismatic parts in fixtures during the machining on drilling-milling-boring machines.
Vitalii Ivanov, Ivan Pavlenko
doaj   +1 more source

Power enhancing by reversing mode sequence in tuned mass-spring unit attached vibration energy harvester

open access: yesAIP Advances, 2013
We propose a vibration energy harvester consisting of an auxiliary frequency-tuned mass unit and a piezoelectric vibration energy harvesting unit for enhancing output power.
Jae Eun Kim, Yoon Young Kim
doaj   +1 more source

Developing a new focal vibration and heat therapy system

open access: yesCurrent Directions in Biomedical Engineering, 2023
Vibrational heating therapy is a type of physical therapy that uses the application of heat and vibrations to stimulate the body’s healing process. The therapy is believed to promote circulation, reduce inflammation, and relieve muscle tension.
Abbasimoshaei Alireza   +2 more
doaj   +1 more source

Damage Detection on a Beam with Multiple Cracks: A Simplified Method Based on Relative Frequency Shifts

open access: yesSensors, 2021
Identifying cracks in the incipient state is essential to prevent the failure of engineering structures. Detection methods relying on the analysis of the changes in modal parameters are widely used because of the advantages they present.
Gilbert-Rainer Gillich   +6 more
doaj   +1 more source

Complex Eigenmodes and Eigenfrequencies in Electromagnetics [PDF]

open access: yesIEEE Transactions on Antennas and Propagation, 2021
A first comprehensive treatment on complex eigenmodes is presented for general lossy traveling-wave electromagnetic structures where the per unit length propagation phase shift ($β$) dependent complex eigenfrequencies $Ω(β)$ are mapped to the frequency dependent complex propagation constant $γ(ω_0)$ for variety of electromagnetic structures.
Joao G. Nizer Rahmeier   +2 more
openaire   +2 more sources

Investigations on Dynamical Stability in 3D Quadrupole Ion Traps

open access: yesApplied Sciences, 2021
We firstly discuss classical stability for a dynamical system of two ions levitated in a 3D Radio-Frequency (RF) trap, assimilated with two coupled oscillators.
Bogdan M. Mihalcea, Stephen Lynch
doaj   +1 more source

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