Autor: Baksa, Attila - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Saint-Venant torsion of a Cartesian orthotropic bar with an isosceles right-angled triangle cross-section
Autorzy:: Ecsedi, István
Baksa, Attila
Powiązania:: https://bibliotekanauki.pl/articles/38890068.pdf
Data publikacji:: 2024
Wydawca:: Instytut Podstawowych Problemów Techniki PAN
Tematy:: Saint-Venant torsion
approximate analytical solution
lower and upper bounds
torsional rigidity
orthotropic.
Opis:: The Saint-Venant torsion of the Cartesian orthotropic homogeneous linearly elastic bar is considered. The cross-section of the prismatic bar is an isosceles right-angled triangular plane domain. An approximate analytical method is presented to obtain Prandtl’s stress function, shearing stresses, and torsional rigidity. Upper and lower bounds for the torsional rigidity are provided. The obtained results for shearing stresses are verified through FEM computation.
Źródło:: Engineering Transactions; 2024, 72, 1; 81-94
0867-888X
Pojawia się w:: Engineering Transactions
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: FEM stress analysis of a barrel reamer
Autorzy:: Baksa, Attila
Ladányi, Gábor
Szirbik, Sándor
Virág, Zoltán
Powiązania:: https://bibliotekanauki.pl/articles/2064371.pdf
Data publikacji:: 2019
Wydawca:: STE GROUP
Tematy:: HDD technology
reamer
FEM
stress
displacement
technologia HDD
rozwiertak
naprężenie
przemieszczenie
Opis:: Horizontal Directional Drilling (HDD) is a method of installing underground pipelines, cables and service conduit through trenchless methods. The tools and techniques used in the HDD process are an outgrowth of the oil well drilling industry, too. Installation of a pipeline by HDD is a three stages process. The first stage consists of directionally drilling a small diameter pilot hole along a designed directional path. Drilling fluid is pumped through the drill pipe to the drill bit where high pressure jets and the bit will grind the soils ahead of the drill stem. The second stage involves enlarging this pilot hole to a diameter suitable for installation of the pipeline. A reamer is pulled back and rotated while pumping drilling fluid to cut and remove solids to enlarge the hole. A kind of reamer is the subject of this paper. The final stage consists of pulling the pipeline back into the pre-reamed hole. The most important part of the mechanical analysis is to define the boundary conditions for operating situations when the tool is under maximum load. In this paper we present a helpful description for giving boundary conditions to perform the numerical simulation of a barrel reamer.
Źródło:: New Trends in Production Engineering; 2019, 2, 1; 178--185
2545-2843
Pojawia się w:: New Trends in Production Engineering
Dostawca treści:: Biblioteka Nauki

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