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Wyszukujesz frazę "energy absorption structure" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Experimental and numerical investigation of energy absorption elastomer panel with honeycomb structure
Autorzy:
Bogusz, P.
Popławski, A.
Morka, A.
Stankiewicz, M.
Sławiński, G.
Powiązania:
https://bibliotekanauki.pl/articles/246847.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
energy absorption structure
blast shock wave
numerical modelling
elastomer
validation
Opis:
The paper presents a prototype design of elastomer energy absorbing panel made in a shape of honeycomb structure. The proposed panel was installed in a protected plate and tested on a specially designed test stand, where a shock wave from a small explosive charge was applied. The elastomer honeycomb structure was compared with a version of the panel made of solid elastomer materials, the same as used in the honeycomb structure and also with a protected plate without any panels. During the research, acceleration in the middle part of each investigated protected plate was recorded. The protected plates were scanned after the tests in order to measure their maximum deformation. Acceleration graphs and maximum deflections of all three considered structures were compared. The obtained results were used to validate numerical models of the designed structures and the test stand. A discreet model of the test stand and models of elastomer panels were developed with HyperMesh FEM software using shell and solid elements. The materials were described using a tabulated Johnson-Cook model and constitutive model for the rubber parts; all available in the material library of Ls-Dyna software. The blast loading was simulated using the CONWEP method. This model generates a boundary condition, based on the experimental data and TNT equivalent mass, which substitutes the wave propagation with a pressure. Finally, the experimental results of acceleration and deformation of the plates were compared with the corresponding results of the numerical analyses carried out using finite element method. The numerical models can be utilised in the future research as a virtual range stand. The developed elastomer honeycomb structure can be modified to meet various requirements of ballistic protection levels, by applying elastomer of different stiffness or optimizing shape and dimensions of the honeycomb structure.
Źródło:
Journal of KONES; 2015, 22, 4; 29-36
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neural Networks in Crashworthiness Analysis of Thin-Walled Profile with Foam Filling
Autorzy:
Rogala, Michał
Powiązania:
https://bibliotekanauki.pl/articles/103402.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
energy dissipation
thin-walled structure
aluminium foam
energy absorption
rozpraszanie energii
konstrukcja cienkościenna
pianka aluminiowa
pochłanianie energii
Opis:
This article presents the numerical tests of thin-walled compressed columns with a square cross-section. The crush efficiency indicators were determined using the finite element method (Abaqus) and neural networks of MLP. The models had a constant circular trigger, with a diameter of 32 mm. During dynamic analysis, the samples were loaded with 1700 J. The numerical models were filled with aluminum foam from 40 mm to 180 mm every 20 mm. The study presents the conclusions for the thin-walled models with crushable foam.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 3; 93-99
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy absorption characteristics of thin-walled sinusoidal corrugated tube using RSM-CCD
Autorzy:
Rahim, Mohd. Reyaz Ur
Bharti, Prem Kumar
Powiązania:
https://bibliotekanauki.pl/articles/1839500.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
response surface method
RSM
corrugated tube
energy absorption characteristics
finite element analysis
thin-walled structure maximum
metoda powierzchni odpowiedzi
rura falista
charakterystyka pochłaniania energii
analiza elementów skończonych
konstrukcja cienkościenna
Opis:
The axial crushing behaviour of tubes of different section shapes has been extensively investigated as they have an excellent energy absorption, but the thin walled corrugated tube structures have been designed to further improve their energy absorption performance. The study aims to analyze the effect of sinusoidal corrugations along cross section of the tube on peak force, energy absorption and specific energy absorption. In the present work the response surface methodology (RSM) using central composite design (CCD) has been used and simulation work is performed by using ANSYS workbench to explore the effects of geometrical parameters on the responses of constructing models.
Źródło:
Production Engineering Archives; 2020, 26, 4; 144-153
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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