Temat: experimental measurement - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Axial stiffness for large-scale ball slewing rings with four-point contact
Autorzy:: Hrcek, Slavomir
Kohar, Robert
Steininger, Jan
Powiązania:: https://bibliotekanauki.pl/articles/2090718.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: stiffness
experimental measurement
slewing ring
deformation constant
sztywność
pomiar eksperymentalny
pierścień obrotowy
stała deformacji
Opis:: This article deals with the design of slewing rings (slewing bearings). A fully parametric, 3D virtual model of a ball slewing ring with four-point contact was created in the PTC/Creo Parametric CAD system. This model was subsequently used for finite-element analysis using Ansys/Workbench CAE software. The purpose of the FEM analysis was to determine the axial stiffness characteristics. Results of FEM analysis were experimentally verified using a test bench. At the end of the article, we present the nomograms of the deformation constant for different pitch diameters, rolling element diameters and contact angles.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 2; e136725, 1--11
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Axial stiffness for large-scale ball slewing rings with four-point contact
Autorzy:: Hrcek, Slavomir
Kohar, Robert
Steininger, Jan
Powiązania:: https://bibliotekanauki.pl/articles/2173594.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: stiffness
experimental measurement
slewing ring
deformation constant
sztywność
pomiar eksperymentalny
pierścień obrotowy
stała deformacji
Opis:: This article deals with the design of slewing rings (slewing bearings). A fully parametric, 3D virtual model of a ball slewing ring with four-point contact was created in the PTC/Creo Parametric CAD system. This model was subsequently used for finite-element analysis using Ansys/Workbench CAE software. The purpose of the FEM analysis was to determine the axial stiffness characteristics. Results of FEM analysis were experimentally verified using a test bench. At the end of the article, we present the nomograms of the deformation constant for different pitch diameters, rolling element diameters and contact angles.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 2; art. no. e136725
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Influence of nearby structure on the wind flow around the cube structure
Autorzy:: Olekšáková, I.
Hubová, O.
Konečná, L.
Powiązania:: https://bibliotekanauki.pl/articles/131473.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Komisja Inżynierii Budowlanej PAN Oddział w Katowicach
Tematy:: wind tunnel
turbulent wind flow
cube structure
pressure coefficient
experimental measurement
tunel aerodynamiczny
turbulentny przepływ wiatru
współczynnik ciśnienia
pomiar eksperymentalny
Opis:: The influence of a nearby structure on the turbulent wind flow around the cube structure was investigated in this paper. This problem was solved by two different methods. The first one was the numerical solution by CFD simulations. Obtained results were compared with the results from tests made in the wind tunnel. Description of the problem, theory and basic equations, specification of the 3D simulations and experimental measurements were mentioned. From the evaluation of the results, pressure coefficients for this type of structure and for three solved cases, were determined. Pressure coefficients determined by the Eurocode were larger than the values determined by the tests and CFD simulations. In the case of self-standing cube, pressure coefficients were following: Cp=-2.35 (CFD), Cp=-2.404 (test). Deviations were relatively small. Hence, used k-ε model is suitable for determination of the maximum values of pressure coefficients Cp in the investigated case.
Źródło:: Roczniki Inżynierii Budowlanej; 2015, 15; 29-35
1505-8425
Pojawia się w:: Roczniki Inżynierii Budowlanej
Dostawca treści:: Biblioteka Nauki

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