Results 251 to 260 of about 10,039,203 (328)

Flexoelectric effects on the natural frequencies for free vibration of piezoelectric nanoplates

, 2021
Flexoelectricity is an electromechanical coupling phenomenon between polarization and strain gradient. Based on the Kirchhoff thin plate theory, the electromechanical coupling responses of nanoplates with the piezoelectric and flexoelectric effects are ...
Bin Wang, Xian‐Fang Li
semanticscholar   +1 more source

Flow-induced vibrations of two cylinders of different natural frequencies

Ocean Engineering, 2018
Bin Qin, , Chunning Ji
exaly   +2 more sources

On the detection of natural frequencies and mode shapes of submerged rotating disk-like structures from the casing

Mechanical Systems and Signal Processing, 2015
To avoid resonance problems in rotating turbomachinery components such as impellers, it is of paramount importance to determine the natural frequencies of these parts when they are under operation.
Alexandre Presas, David Valentin, Eduard Egusquiza   +2 more
exaly   +2 more sources

Maximizing natural frequencies of inhomogeneous cellular structures by Kriging-assisted multiscale topology optimization

, 2020
This paper proposes a Kriging-assisted multiscale topology optimization method for maximizing natural frequencies of inhomogeneous cellular structures, where spatially-varying microstructural configurations and their macroscopic distribution are ...
Yan Zhang, Liang Gao, Mi Xiao
semanticscholar   +1 more source

An Analytical Method for Calculating the Natural Frequencies of a Motor Considering Orthotropic Material Parameters

IEEE transactions on industrial electronics (1982. Print), 2019
In this paper, a novel analytical method is proposed for calculating the natural frequencies of a motor to reduce the large natural frequency calculation errors produced by common isotropic analytical models.
Sheng-Yan Hu, S. Zuo, Hao Wu, Mingtian Liu   +3 more
semanticscholar   +1 more source

A method for an accurate estimation of natural frequencies using swept-sine acoustic excitation

Mechanical systems and signal processing, 2019
Early detection of cracks in engineering structures by vibration-based methods requires monitoring systems that can evaluate natural frequencies with high accuracy.
I. Mituletu, Gilbert-Rainer Gillich, N. Maia   +2 more
semanticscholar   +1 more source

Natural frequencies of structures with interval parameters

Journal of Sound and Vibration, 2015
Alba Sofi, Giuseppe Muscolino, Isaac Elishakoff   +2 more
exaly   +2 more sources

Analytical estimation of natural frequencies and mode shapes of a beam having two cracks

International Journal of Mechanical Sciences, 2014
Firooz Bakhtiari-Nejad
exaly   +2 more sources

Musicians’ Natural Frequencies of Performance Display Optimal Temporal Stability

Journal of Biological Rhythms, 2018
Many human action sequences, such as speaking and performing music, are inherently rhythmic: Sequence events are produced at quasi-regular temporal intervals.
Anna P. Zamm, Youyi Wang, C. Palmer
semanticscholar   +1 more source

Natural Frequencies of a Railroad Track

Journal of Applied Mechanics, 1987
The natural frequency of an infinite railroad track was first determined by Timoshenko as ωR = √k/m, where k is the constant for the massless Winkler foundation and m is the mass per unit length of the rail. The natural frequencies of the track are determined here by modeling the track as a beam resting on a 3-D inertial elastic layer. It is shown that
openaire   +1 more source