Results 21 to 30 of about 37,410 (203)

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

The Floquet Theory of the Periodic Euler–Bernoulli Equation

open access: yesJournal of Differential Equations, 1998
The spectrum of the eigenvalue problem \[ \bigl[a(x)u''(x)\bigr]''=\lambda\rho(x)u(x ...
Papanicolaou, Vassilis G   +1 more
openaire   +2 more sources

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

Random Vibration of Space Shuttle Weather Protection Systems

open access: yesShock and Vibration, 1995
The article deals with random vibrations of the space shuttle weather protection systems. The excitation model represents a fit to the measured experimental data. The cross-spectral density is given as a convex combination of three exponential functions.
Isaac Elishakoff   +3 more
doaj   +1 more source

A novel director-based Bernoulli–Euler beam finite element in absolute nodal coordinate formulation free of geometric singularities [PDF]

open access: yesMechanical Sciences, 2013
A three-dimensional nonlinear finite element for thin beams is proposed within the absolute nodal coordinate formulation (ANCF). The deformation of the element is described by means of displacement vector, axial slope and axial rotation parameter per ...
P. G. Gruber   +3 more
doaj   +1 more source

Calculation method for internal force and deformation of the prestressed I-beam on the elastic foundation

open access: yesFrontiers in Earth Science, 2023
The elastic foundation beam theory has been widely used in civil engineering, including railway, tunnel, and building foundations. With the development of fabricated structures, more elastic foundation beams need to be prestressed.
Yangsheng Ye   +11 more
doaj   +1 more source

On the plastic buckling of curved carbon nanotubes

open access: yesTheoretical and Applied Mechanics Letters, 2020
This research, for the first time, predicts theoretically static stability response of a curved carbon nanotube (CCNT) under an elastoplastic behavior with several boundary conditions. The CCNT is exposed to axial compressive loads.
Mohammad Malikan
doaj   +1 more source

Automated Parameter Extraction Of ScAlN MEMS Devices Using An Extended Euler–Bernoulli Beam Theory [PDF]

open access: yesSensors, 2020
Magnetoelectric sensors provide the ability to measure magnetic fields down to the pico tesla range and are currently the subject of intense research. Such sensors usually combine a piezoelectric and a magnetostrictive material, so that magnetically induced stresses can be measured electrically.
Maximilian Krey   +4 more
openaire   +3 more sources

Flexoelectric Effect on Vibration of Piezoelectric Microbeams Based on a Modified Couple Stress Theory

open access: yesShock and Vibration, 2017
A novel electric Gibbs function was proposed for the piezoelectric microbeams (PMBs) by employing a modified couple stress theory. Based on the new Gibbs function and the Euler-Bernoulli beam theory, the governing equations which incorporate the effects ...
Xingjia Li, Ying Luo
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

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