Results 11 to 20 of about 5,367,272 (280)

Non-uniform Euler-Bernoulli beams’ natural frequencies [PDF]

open access: yesIngeniería e Investigación, 2011
This paper has studied the problem of natural frequencies for Euler-Bernoulli beams having non-uniform cross-section. The numerically-obtained solutions were compared to asymptotic solutions obtained by the Wentzel-Kramers-Brillouin (WKB) method.
Hugo Aya, Ricardo Cano, Petr Zhevandrov
doaj   +1 more source

Why frequencies are natural [PDF]

open access: yesBehavioral and Brain Sciences, 2007
AbstractResearch in mathematical cognition has shown that rates, and other interpretations of x/y, are hard to learn and understand. On the other hand, there is extensive evidence that the brain is endowed with a specialized mechanism for representing and manipulating the numerosities of sets – that is, frequencies.
Butterworth, B
openaire   +4 more sources

Delamination localisation and length estimation in composite laminate beam by VSHM and pattern recognition methods [PDF]

open access: yes, 2010
The focus of this work is to investigate the delamination damage in laminate composite beams, to fix a Vibration-based structural health monitoring (VSHM) method for the laminate structures.
Palazzetti, Roberto   +7 more
core   +4 more sources

Bridge Natural Frequencies, Numerical Solution versus Experiment

open access: yesApplied Sciences, 2022
The article is dedicated to a numerical and experimental analysis of the basic natural frequencies of a bridge structure. It presents the results obtained using the finite element method and the frequency response functions applied in two variants, using
Veronika Valašková, Jozef Melcer
doaj   +1 more source

The natural frequencies of masonry beams [PDF]

open access: yesArchive of Applied Mechanics, 2021
The present paper aims at analytically evaluating the natural frequencies of cracked slender masonry elements. The problem is dealt with in the framework of linear perturbation, and the small oscillations of the structure are studied under loaded conditions, after the equilibrium for permanent loads has been achieved.
openaire   +3 more sources

Modal Analysis of Optimized Trapezoidal Stiffened Plates under Lateral Pressure and Uniaxial Compression

open access: yesApplied Mechanics, 2021
This paper deals with the modal analysis of optimized trapezoidal stiffened plates with simple supported conditions on the four edges of the base plate. The main objective of the finite element analysis is to investigate the natural frequencies and mode ...
Zoltán Virág, Sándor Szirbik
doaj   +1 more source

Memòria resum d’actuacions Parc Natural dels Ports 2021 [PDF]

open access: yes, 2022
Gestió efectuada durant el 2021 al Parc Natural dels Ports, destacar les accions estratègiques i les fites més rellevants en cada un dels àmbits i línies de treball.[es] Gestión efectuada durante el 2021 en el Parque Natural de Els Ports, destaca las ...
Parc Natural dels Ports
core  

Memòria resum d’actuacions Parc Natural dels Ports 2020 [PDF]

open access: yes, 2021
Gestió efectuada durant el 2020 al Parc Natural dels Ports, destacar les accions estratègiques i les fites més rellevants en cada un dels àmbits i línies de treball.info:eu-repo/semantics ...
Parc Natural dels Ports
core  

Transient vibration analysis of a completely free plate using modes obtained by Gorman's superposition method [PDF]

open access: yes, 2010
This paper shows that the transient response of a plate undergoing flexural vibration can be calculated accurately and efficiently using the natural frequencies and modes obtained from the superposition method.
Ilanko, Sinniah, Yusuke, Mochida
core   +1 more source

Understanding test accuracy research: a test consequence graphic

open access: yesDiagnostic and Prognostic Research, 2018
Background Presenting results of diagnostic test accuracy research so that it is accessible to users is challenging. Commonly used accuracy measures (e.g. sensitivity and specificity) are poorly understood by health professionals and the public. Evidence
Penny Whiting, Clare Davenport
doaj   +1 more source

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