Results 21 to 30 of about 24,516 (216)

Vibration control of a piezoelectric cantilever smart beam by ℒ1 adaptive control system

open access: yesSystems Science & Control Engineering, 2021
In this paper, the modelling and design of an $ \mathcal {L}_1 $ state feedback control system applied for vibration control of a smart piezoelectric flexible Euler–Bernoulli cantilever beam is presented.
A. Ebrahimi-Tirtashi   +3 more
doaj   +1 more source

Geometry of the free-sliding Bernoulli beam [PDF]

open access: yes, 2016
If a variational problem comes with no boundary conditions prescribed beforehand, and yet these arise as a consequence of the variation process itself, we speak of a free boundary values variational problem.
Moreno, Giovanni, Stypa, Monika Ewa
core   +3 more sources

On the Equivalence between Static and Dynamic Railway Track Response and on the Euler-Bernoulli and Timoshenko Beams Analogy

open access: yesShock and Vibration, 2017
The paper tries to clarify the problem of solution and interpretation of railway track dynamics equations for linear models. Set of theorems is introduced in the paper describing two types of equivalence: between static and dynamic track response under ...
Wlodzimierz Czyczula   +2 more
doaj   +1 more source

The cantilever beams analysis by the means of the first-order shear deformation and the Euler-Bernoulli theory

open access: yesTehnički Glasnik, 2019
The effect of the Timoshenko theory and the Euler-Bernoulli theory are investigated in this paper through numerical and analytical analyses. The investigation was required to obtain the optimized position of the pipes support.
Dino Ključanin, Abaz Manđuka
doaj   +1 more source

Stabilization analysis of Euler-Bernoulli beam equation with locally distributed disturbance

open access: yesJournal of Hebei University of Science and Technology, 2017
In order to enrich the system stability theory of the control theories, taking Euler-Bernoulli beam equation as the research subject, the stability of Euler-Bernoulli beam equation with locally distributed disturbance is studied.
Pengcheng HAN, Danhong LIU
doaj   +1 more source

Vibration Characteristics of Piezoelectric Microbeams Based on the Modified Couple Stress Theory

open access: yesShock and Vibration, 2014
The vibration behavior of piezoelectric microbeams is studied on the basis of the modified couple stress theory. The governing equations of motion and boundary conditions for the Euler-Bernoulli and Timoshenko beam models are derived using Hamilton’s ...
R. Ansari   +2 more
doaj   +1 more source

Wave propagation characteristics in nanoporous metal foam nanobeams

open access: yesResults in Physics, 2019
This research is devoted to the wave propagation characteristics analysis of nanobeams made of nanoporous metal foams. Three nanoporosity distribution models, namely, symmetry, asymmetry and uniform distributions, are taken into account.
Yan Qing Wang, Chen Liang
doaj   +1 more source

Nonlinearity in nanomechanical cantilevers [PDF]

open access: yes, 2013
Euler-Bernoulli beam theory is widely used to successfully predict the linear dynamics of micro- and nanocantilever beams. However, its capacity to characterize the nonlinear dynamics of these devices has not yet been rigorously assessed, despite its use
A. H. Nayfeh   +11 more
core   +3 more sources

A Griffith-Euler-Bernoulli theory for thin brittle beams derived from nonlinear models in variational fracture mechanics

open access: yes, 2016
We study a planar thin brittle beam subject to elastic deformations and cracks described in terms of a nonlinear Griffith energy functional acting on $SBV$ deformations of the beam.
Schmidt, Bernd
core   +1 more source

Free transverse vibration of Euler-Bernoulli beams resting on viscoelastic foundation

open access: yes上海师范大学学报. 自然科学版, 2018
This paper focuses on the free transverse vibration of an Euler-Bernoulli beam resting on three-parameter viscoelastic foundation.Under simply supported boundary conditions,the exact frequency equations and the modal functions are given,and the explicit ...
Peng Li, Wang Ying
doaj   +1 more source

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