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Wyświetlanie 1-2 z 2
Tytuł:
Effect of Test Velocity on the Specific Energy Absorption under Progressive Crushing of Composite Tubes
Autorzy:
Ryzińska, Grażyna
Gieleta, Roman
Powiązania:
https://bibliotekanauki.pl/articles/102741.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
CFRP
energy absorption
progressive crushing
crashworthiness
SHPB
velocity
pochłanianie energii
stopniowe kruszenie
odporność na uderzenia
prędkość
Opis:
The paper presents the results of the compression tests for carbon-epoxy composites in order to assess the amount of energy absorbed depending on the process velocity and content of axial fibres. Two types of prepreg (UD 200 g/m2 and woven 160 g/m2) were used to prepare the specimens with a diameter of 20 mm and a height of 34 mm. The specimens were subjected to compression under various speed conditions (static, dynamic and SHPB tests). The calculated specific energy absorption values showed a 50–60% decrease with increasing process velocity and depending on the type of specimens architecture. The highest energy values were absorbed by the specimens with the highest share of axial fibres in the sample.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 2; 94-102
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of Compression Test of Natural Fiber Composite Sections
Autorzy:
Ryzińska, Grażyna
Janowski, Grzegorz
Bąk, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2024017.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
jute
flax
Ansys
composite
Digimat
Opis:
In recent years, there has been an increasing interest in composite materials reinforced with natural fibers. Due to the easy and cheap methods of obtaining raw materials, the possibility of recycling, biodegradability, production and processing safe for health, such materials can be a good alternative to composite materials reinforced with glass or carbon fibers. However, due to the lower mechanical properties of natural composites, their use as construction materials is still limited. Nevertheless, natural fiber composites have characteristics that can be used in structural applications as long as the mechanical behavior is well understood, reliable and predictable. The paper presents the results of numerical calculations of the compression process of a composite reinforced with a fabric made of flax and jute fibers (trade names: Biotex Flax 400g/cm2 and Biotex Jute 400 g/cm2) on a basis of Kinetix R240 epoxy resin. The data necessary for the numerical analysis were calculated in the Digimat software using the Double Inclusion micromechanical model, while the simulations of compression of the details were carried out in the Ansys software. Sections with different number of layers were tested. The results were compared with the experiment. Buckling forces obtained in the numerical analysis are nearby experimental results. Two types of C – section buckling modes were obtained and they consisted of two or three half-waves of buckling.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 2; 138-147
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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