Temat: hollow rod - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Determining of Maximum Stress in Circular and Circular Hollow Rod by Measurement of Strains
Autorzy:: LABAŠ, Vladimír
ĎURIŠ, Rastislav
LABAŠOVÁ, Eva
Powiązania:: https://bibliotekanauki.pl/articles/456446.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Rzeszowski
Tematy:: shear stress
circular rod
hollow circular rod
measurement system
Opis:: The contribution deals with determining of stress from measured values of strains. Gauge strains, which were linked in half-bridge, and the universal measurement system QuantumX MX840 were used to experimentally obtain the strains. Rods with circular section and hollow circular section serve as tests samples. Students within the educational process will have the opportunity to acquaint with the universal measuring system and see the interconnectedness of theory and practical application.
Źródło:: Edukacja-Technika-Informatyka; 2015, 6, 2; 173-178
2080-9069
Pojawia się w:: Edukacja-Technika-Informatyka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Using the Erfi function in the problem of the shape optimization of the compressed rod
Autorzy:: Marcinowski, J.
Sadowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/265861.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: pręt ściskany
optymalizacja kształtu
wyboczenie
program Mathematica
compressed rod
hollow rod
shape optimization
buckling criterion
analytical approach
Erfi function
Opis:: The shape of the optimal rod determined in the work meets the condition of mass conservation in relation to the reference rod. At the same time, this rod shows a significant increase in resistance to axial force. In the examples presented, this increase was 80% and 117%, respectively, for rods with slenderness of 125 and 175. A practical benefit from the use of compression rods of the proposed shapes is clearly visible. The example presented in this publication shows how great the utility in the structural mechanics can be, resulting from the applications of complex analysis (complex numbers). This approach to many problems can find its solutions, while they are lacking in the real numbers domains. What is more, although these are operations on complex numbers, these solutions have often their real representations, as the numerical example shows. There are too few applications of complex numbers in the technique and science, therefore it is obvious that the use of complex analysis should have an increasing range. One of the first people to use complex numbers was Girolamo Cardano. Cardano, using complex numbers, was solving cubic equations, unsolvable to his times – as the famous Franciscan and professor of mathematics Luca Pacioli put it in his paper Summa de arithmetica, geometria, proportioni et proportionalita (1494). It is worth mentioning that history has given Cardano priority in the use of complex numbers, but most probably they were discovered by another professor of mathematics – Scipione del Ferro (cf. [1]). We can see, that already then, they were definitely important (complex numbers).
Źródło:: International Journal of Applied Mechanics and Engineering; 2020, 25, 2; 75-87
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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