Temat: deformation constant

Skocz do pozycji: 1.

Tytuł:: Axial stiffness for large-scale ball slewing rings with four-point contact
Autorzy:: Hrcek, Slavomir
Kohar, Robert
Steininger, Jan
Tematy:: stiffness
experimental measurement
slewing ring
deformation constant
sztywność
pomiar eksperymentalny
pierścień obrotowy
stała deformacji; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/2090718.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Axial stiffness for large-scale ball slewing rings with four-point contact
Autorzy:: Hrcek, Slavomir
Kohar, Robert
Steininger, Jan
Tematy:: stiffness
experimental measurement
slewing ring
deformation constant
sztywność
pomiar eksperymentalny
pierścień obrotowy
stała deformacji; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/2173594.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Artykuł

Skocz do pozycji: 4.

Tytuł:: Novel Modeling of the Work-Hardening Curve
Autorzy:: Pluta, P.
Hryniewicz, T.
Tematy:: Hardening curve
yield stress
Relative deformation
Relative deformation constant;
Absolute strain constant
Stress potential fields
Strain potential fields
Yield force
Plastic rigidity
Plastic energy
Yield work; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/411581.pdf Link otwiera się w nowym oknie
Opis:: The paper aims at a critical analysis of the existent description of plastic strengthening/ work-hardening curve. The adequate description of the curve, having a physical sense, has been proposed. The description begins from the very source which is the primary, general differential equation. That source was used to formulate the characteristics of the studied system. Then the analytical solution of the dependence between the yield stress and the relative deformation is provided. The description of the work-hardening curve has been developed to further form a proper dependence of the yield force on the absolute yield strain. Other functional characteristics, namely the coefficient of the plastic rigidity, yield work, and the plastic potentials, have also been formed.
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: On the stress free deformation of linear FGM interface under constant temperature
Autorzy:: Ganczarski, A.
Szubartowski, D.
Tematy:: linear FGM interface
stress free deformation
constant temperature
functionally graded material
odkształcenia
blacha gruba
tworzywa gradientowe; Pokaż więcej
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Powiązania:: https://bibliotekanauki.pl/articles/386659.pdf Link otwiera się w nowym oknie
Opis:: This paper demonstrates the stress free thermo-elastic problem of the FGM thick plate. Existence of such a purely thermal deformation is proved in two ways. First proof is based on application of the Iljushin thermo-elastic potential to displacement type system of equations. This reduces 3D problem to the plane stress state problem. Next it is shown that the unique solution fulfils conditions of simultaneous constant temperature and linear gradation of thermal expansion coefficient. Second proof is based directly on stress type system of equations which straightforwardly reduces to compatibility equations for purely thermal deformation. This occurs if only stress field is homogeneous in domain and at boundary. Finally an example of application to an engineering problem is presented.
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 6.

Tytuł:: Nonlinear, nonhomogeneous periodic problems with no growth control on the reaction
Autorzy:: Gasiński, Leszek
Papageorgiou, Nikolaos S.
Opis:: We consider a nonlinear periodic problem driven by a nonhomogeneous differential operator, which includes as a particular case the scalar p-Laplacian. We assume that the reaction is a Carathéodory function which admits time-dependent zeros of constant sign. No growth control near ±∞ is imposed on the reaction. Using variational methods coupled with suitable truncation and comparison techniques, we prove two multiplicity theorems providing sign information for all the solutions.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

Skocz do pozycji: 7.

Tytuł:: On the existence of five nontrivial solutions for resonant problems with p-Laplacian
Autorzy:: Gasiński, Leszek
Papageorgiou, Nikolaos
Tematy:: p-Laplacian
Clarke subdifferential
linking sets
upper-lower solutions
second eigenvalue
nodal and constant sign solutions
second deformation theorem; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Powiązania:: https://bibliotekanauki.pl/articles/729275.pdf Link otwiera się w nowym oknie
Opis:: In this paper we study a nonlinear Dirichlet elliptic differential equation driven by the p-Laplacian and with a nonsmooth potential. The hypotheses on the nonsmooth potential allow resonance with respect to the principal eigenvalue λ₁ > 0 of $(-Δₚ,W₀^{1,p}(Z))$. We prove the existence of five nontrivial smooth solutions, two positive, two negative and the fifth nodal.
Dostawca treści:: Biblioteka Nauki

Artykuł

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