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Wyszukujesz frazę "out-of-plane compression" wg kryterium: Wszystkie pola


Wyświetlanie 1-2 z 2
Tytuł:
Out-of-plane static crushing of thin-walled honeycomb structures. Numerical and experimental investigation
Autorzy:
Ciepielewski, Radosław
Dybcio, Paweł
Barnat, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/102078.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
honeycomb
thin-walled structure
static compression test
out-of-plane compression
FEM
LS-DYNA
Alucore
plaster miodu o cienkich ściankach
test kompresji statycznej
kompresja pozasłoneczna
MES
Opis:
Aim of presented study was to compare plateau stress in honeycomb structures under out-of-plane load calculated using Wierzbicki formula with numerical simulations validated using experimental trials. ALUBOND® Alucore honeycomb structure was examined. The results of theoretical, experimental and numerical investigation are reported. Two methods of modeling core behavior were evaluated using simulations. Full core geometry and simplified Y-shaped element were analyzed. Both approaches were compared with experimental out-of-plane compression tests. Aim of the study was to determine the influence of core geometrical parameters on obtained plateau stress value. Various foil thicknesses and cell sizes were studied numerically. The results showed, that initial and final deformation mode strongly depends on the geometry of the honeycomb structure. Force required to crush the core grew with increase of wall thickness, and decreased with increase of cell size. Calculations were performed using an implicit integration scheme implemented in the LS-DYNA software. Research showed the presence of plateau relationship between stress and geometric dimensions and structure response. Good agreement between results obtained by all methods was achieved. Basing on the results, conclusions concerning modeling honeycomb materials were drawn.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 3; 96-105
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical study on compression properties of semi-reentrant filled tubular structures
Autorzy:
Wu, Dongquan
Li, Dinghe
Zhang, Zhiqiang
Chen, Jianguo
Powiązania:
https://bibliotekanauki.pl/articles/2200883.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
semi-reentrant (SR) structure
tubular fillers
out-of-plane
in-plane compression
Opis:
In this study, a semi-reentrant structure (SR) filled with different tubular structures, includ- ing tube, triangular and rectangle structures were designed. The tubular structures were perfectly assembled into semi-reentrant cells to avoid swaying in the semi-reentrant cell. The geometric relations and relative density for these structures were established. For the out-of-plane and in-plane compressions, SR filled tubular structures exhibited different de- formation patterns compared to those of SR or pure fillers. A constraint effect was found between the filler tubular and container SR. With fillers contained inside the SR structures, the plateau stresses for three conditions were all promoted compared to those of SR. The best out-of-plane compression resistance occurred in the SR filled rectangle which might be caused by larger interaction areas between the SR and rectangular structures. The (specific) energy absorption of the SR filled tube compressed out-of-plane was the largest. The peak and plateau stress of the SR filled triangle was the largest compared to other structures when compressed in plane due to stability of the triangle. It was found that the plateau stress, energy absorption and specific energy absorption of SR filled triangle was the largest, while that of SR filled rectangle was the lowest.
Źródło:
Journal of Theoretical and Applied Mechanics; 2023, 61, 2; 233--244
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
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