Results 261 to 270 of about 12,187,245 (343)

A novel similitude method for predicting natural frequency of FG porous plates under thermal environment

Mechanics of Advanced Materials and Structures, 2021
For FG porous plates under thermal environment, the complexity of porosity leads to the inaccuracy of theoretical analysis, so it is important to establish dynamic similitude to guide the scaled model test to reduce the difficulty and cost of thermal ...
Lilin Zhou
semanticscholar   +1 more source

Static, natural frequency and dynamic analyses of functionally graded porous annular sector plates reinforced by graphene platelets

Mechanics based design of structures and machines, 2020
In this article, static, dynamic and natural frequency analyses of functionally graded porous annular sector plate reinforced by graphene nanoplatelets are investigated for the first time.
K. Asemi, M. Babaei, Faraz Kiarasi
semanticscholar   +1 more source

Effects of natural frequency ratio on vortex-induced vibration of a circular cylinder in steady flow

, 2020
This paper investigates the effects of the natural frequency ratio on the vibration response of an elastically mounted circular cylinder in fluid flows at a low Reynolds number of 200 and a mass ratio of 2.
Ming Zhao
semanticscholar   +1 more source

A novel method for single and multiple damage detection in beams using relative natural frequency changes

Mechanical systems and signal processing, 2019
Concentrated damage such as cracks is one of the most common types of damage in beams. It is essential to detect such damage early to avoid structural failure.
Ganggang Sha, M. Radzieński, M. Cao, W. Ostachowicz   +3 more
semanticscholar   +1 more source

Tuning of natural frequency with electromagnetic shunt mass

Smart materials and structures (Print), 2019
In previous studies, the negative impedance electromagnetic shunt damping (EMSD) can increase the damping of host structures to reduce the unexpected vibration.
Wenguang Zheng, B. Yan, Hongye Ma, Rongyang Wang, Jiangming Jia, Lu Zhang, Chuanyu Wu   +6 more
semanticscholar   +1 more source

Analyses of natural frequency and electromechanical behavior of flexoelectric cylindrical nanoshells under modified couple stress theory

Journal of Vibration and Control, 2018
Different from piezoelectric effect, the flexoelectric effect is size dependent and becomes more significant at nanoscale. A nonlinear dynamic model of nanoscale flexoelectric shells is developed based on modified couples stress theory.
S. Zeng, BL Wang, K.F. Wang
semanticscholar   +1 more source

Natural Low-Frequency Riblets

Flow, Turbulence and Combustion, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Natural Frequencies of Mindlin Circular Plates

Journal of Applied Mechanics, 1980
The natural frequencies of vibration based upon the Mindlin plate theory are tabulated for uniform circular plates with free, simply supported, and clamped edges for the first several tens modes.
Irie, T., Yamada, G., Aomura, S.
openaire   +1 more source

Computation of Natural Frequencies

2015
The frequencies at which a PKM tends to vibrate when hit, struck or somehow disturbed are known as the natural frequencies. The determination of the natural frequencies of PKM is needed for both design and control purposes. In this chapter, we present the computation of natural frequencies of parallel robots.
Sébastien Briot, Wisama Khalil
openaire   +1 more source

Natural Frequencies of Uniform Grillages

Journal of Applied Mechanics, 1963
The natural frequencies for the transverse vibration of grillages with various types of boundary conditions are studied, taking into account the distributed mass of the beams. Finite-difference calculus is used for deriving the frequency equations.
openaire   +2 more sources