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Wyszukujesz frazę "laminates" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Topology optimization - broadening the areas of application
Autorzy:
Bendsoe, M. P.
Lund, E.
Olhoff, N.
Sigmund, O.
Powiązania:
https://bibliotekanauki.pl/articles/970157.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
optymalizacja topologiczna
laminat
płyn
topology optimization
laminates
pressure loads
multiphysics
fluids
Opis:
This paper deals with recent, developments of topology optimization techniques for application in some new types of design problems. The emphasis is on recent work of the Danish research groups at Aalborg University and at the Technical University of Denmark and focus is on the central role that the choice of objective functions and design parameterization plays for a successful extension of the material distribution approach to new design settings and to new types of physics models. The applications that will be outlined encompass design of laminated composite structures, design for pressure loads, design in fluids, design in acoustics, and design in photonics. A short outline of other design optimization activities is also given.
Źródło:
Control and Cybernetics; 2005, 34, 1; 7-35
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental and finite element studies on free vibration of skew plates
Autorzy:
Srinivasa, C. V.
Suresh, Y. J.
Prema Kumar, W. P.
Powiązania:
https://bibliotekanauki.pl/articles/955136.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
laminat
analiza elementów skończonych
płyta kompozytowa
częstotliwość drgań
skew plates
antisymmetric laminates
free vibration
experimental method
finite element analysis
Opis:
The present paper deals with the experimental studies carried out on free vibration of isotropic and laminated composite skew plates. The natural frequencies were also determined using QUAD8 finite element of MSC/NASTRAN and a comparison was made between the experimental values and the finite element solution. The effects of the skew angle and aspect ratio on the natural frequencies of isotropic skew plates were studied. The effects of the skew angle, aspect ratio, fiber orientation angle and laminate sequence (keeping the number of layers constant) on the natural frequencies of antisymmetric composite laminates were also studied. The experimental values of natural frequencies are in good agreement with the FE solutions. The natural frequencies are found to increase with an increase in the skew angle. The variation of natural frequencies with the aspect ratio is small and negligible both for isotropic and laminated composite skew plates.
Źródło:
International Journal of Applied Mechanics and Engineering; 2014, 19, 2; 365-377
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finite element studies on free vibration of laminated composite cylindrical skew panels
Autorzy:
Srinivasa, C. V.
Suresh, Y. J.
Prema Kumar, W. P.
Powiązania:
https://bibliotekanauki.pl/articles/955177.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
panel cylindryczny
laminat
wolne wibracje
element skończony
częstotliwość podstawowa
cylindrical skew panel
panel angle
skew angle
antisymmetric laminates
free vibration
finite element
fundamental frequency
Opis:
This paper presents the finite element studies on free vibration of isotropic and laminated composite cylindrical skew panels. The analysis is performed using CQUAD4 and CQUAD8 elements of MSC/NASTRAN. The effects of the panel angle, skew angle, aspect ratio and length-to-thickness-ratio on fundamental frequency of isotropic cylindrical skew panels are studied. The effects of additional parameters such as the fiber orientation angle, numbers of layers and stacking sequence on the fundamental frequency of antisymmetric composite laminates are also studied. It is found that the CQUAD8 element yields better results than the CQUAD4 element in the validation and convergence studies. The CQUAD8 element is employed for the remaining part of the studies. The fundamental frequencies are found to increase with the panel angle and skew angle. When the number of layers in the laminate is large, the variation of the fundamental frequency with the number of layers is not appreciable. The boundary conditions are found to have a significant influence on the fundamental frequency.
Źródło:
International Journal of Applied Mechanics and Engineering; 2014, 19, 1; 165-180
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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