Zgadzam się
Nasza strona zapisuje niewielkie pliki tekstowe, nazywane ciasteczkami (ang. cookies) na Twoim urządzeniu w celu lepszego dostosowania treści oraz dla celów statystycznych. Możesz wyłączyć możliwość ich zapisu, zmieniając ustawienia Twojej przeglądarki. Korzystanie z naszej strony bez zmiany ustawień oznacza zgodę na przechowywanie cookies w Twoim urządzeniu.
The research leading to these results has received funding from the commissioned task entitled “VIA CARPATIA Universities of Technology Network named after the President of the Republic of Poland Lech Kaczyński” contract no. MEiN/2022/DPI/2575 action entitled “In the neighborhood – inter-university research internships and study visits.”
This study investigates the influence of temperature variations on the buckling properties of thin-walled omega-pro-
files fabricated from carbon-epoxy composite materials. Utilizing a MTS testing machine, compression tests were
conducted on these profiles at temperatures ranging from -20°C to 80°C, in 20°C increments. The primary objective
was to assess how temperature fluctuations impact the buckling load and load-bearing capacity of these composite
profiles under axial compression. The experimental setup allowed for precise measurement of load-displacement
and load-deflection characteristics, and the critical load at which buckling initiation occurred. Observations revealed
that the buckling resistance of the profiles exhibited a complex dependence on temperature. At lower temperatures,
the composite material demonstrated enhanced stiffness and strength, marginally increasing buckling resistance.
Conversely, at elevated temperatures, a noticeable degradation in mechanical properties was observed, leading to
a reduced buckling load and altered failure modes. To complement the experimental findings, a comprehensive
finite element (FE) analysis was conducted for sample in room temperature. The FE model, developed to replicate
the experimental conditions closely, employed an eigenvalue-based approach to predict the buckling initiation and
progression accurately. The presented results are the results of only preliminary tests and they will be expand about
more samples number as well as to determine material properties for various temperatures.
