Autor: Przybylski, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Buckling of stepped beams resting on an elastic foundation
Autorzy:: Kuliński, K.
Przybylski, J.
Powiązania:: https://bibliotekanauki.pl/articles/122707.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: buckling
critical force
stepped beam
Winkler foundation
piezoelectricity
piezoceramics
wyboczenie
siła krytyczna
podłoże Winklera
piezoelektryczność
Opis:: The influence of structural parameters of a stepped beam with two ends fixed and resting on Winkler foundation on its buckling critical force has been discussed in this paper. The structure inhomogeneity results from two piezoceramic plates perfectly bonded at the top and bottom surface of the beam. For the performed analysis five different supports of beam ends which prevent longitudinal displacements have been adopted. Numerical analysis has been divided into two parts. The first part concerns the influence of the system geometry on its critical force, whereas in the second part, a modification of the buckling load resulting from the electric field applied to the piezosegment has been investigated.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2015, 14, 4; 115-126
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Non-linear vibrations of a non-uniform beam with symmetrically located piezoelectric patches
Autorzy:: Kuliński, K.
Przybylski, J.
Powiązania:: https://bibliotekanauki.pl/articles/128218.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: non-linear vibrations
piezoactuator
amplitude-frequency relation
Winkler foundation
drgania nieliniowe
piezoaktuator
podłoże Winklera
Opis:: In this paper the non-linear vibration behaviour and its modification due to the piezoelectric actuation of a beam with varying cross section and resting on an elastic foundation has been discussed. Due to assumed end conditions the stretching force emerges during the system vibrations. That force can be modified by an axial residual force to enhance or reduce the value of vibrations frequency of the beam. The system is divided onto three segments with the central segment consisted of the core beam and two colocally and perfectly bonded piezo patches. In order to obtain the approximate solutions of the non-linear frequency of the systems the Lindstedt-Poincare method has been utilized. Vast number of numerical results shows that not only the structural parameters of the system have significant effect on its non-linear vibration behaviour at a given amplitude but also the residual force and the elastic foundation modulus.
Źródło:: Vibrations in Physical Systems; 2016, 27; 203-210
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

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