Engineering and Environmental Sciences
Przegląd Naukowy Inżynieria i Kształtowanie Środowiska
First natural frequency of multi-segment floor joists with variable cross section
CHALECKI, M. (0000-0003-3451-458X), JAWORSKI, J., SZLACHETKA, O.
floor joist, first natural frequency, Rayleigh method
The Rayleigh’s method can be used to determine the first natural frequency of beams with variable cross-section. The authors analyse multi-segment simply supported beams, symmetrical with respect to their midpoint, having a constant width and variable height. The beams consist generally of five segments. It has been assumed that the neutral bar axis deflected during vibrations has a shape of a beam deflected by a static uniform load. The calculations were made in Mathematica environment and their results are very close to those obtained with FEM.
APA style references: Chalecki, M., Jaworski, J. & Szlachetka, O. (2019). First natural frequency of multi-segment floor joists with variable cross section. Scientific Review Engineering and Environmental Sciences, 28 (4), 526-538. doi: 10.22630/PNIKS.2019.28.4.48
APA style citation in text: The first time citation in text: (Chalecki, Jaworski & Szlachetka, 2019), next citation: (Chalecki et al., 2019)
Chicago style references: Chalecki, Marek, Jacek Jaworski, Olga Szlachetka. "First natural frequency of multi-segment floor joists with variable cross section." Scientific Review Engineering and Environmental Sciences, 86 ser., vol. 28, no 4, (2019): 526-538. doi: 10.22630/PNIKS.2019.28.4.48.
Chicago style citation in text: (Chalecki, Jaworski, and Szlachetka 2019)
Bibtxt style references: Bibtxt_utf8_86art3en.bib
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