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Wyszukujesz frazę "inclusión" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
Boundary element analysis of anisotropic thermomagnetoelectroelastic solids with 3D shell-like inclusions
Autorzy:
Pasternak, I.
Sulym, H.
Powiązania:
https://bibliotekanauki.pl/articles/387339.pdf
Data publikacji:
2017
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
anisotropic
3D
thermomagnetoelectroelastic
crack
thin inclusion
Opis:
The paper presents novel boundary element technique for analysis of anisotropic thermomagnetoelectroelastic solids containing cracks and thin shell-like soft inclusions. Dual boundary integral equations of heat conduction and thermomagnetoelectroelasticity are derived, which do not contain volume integrals in the absence of distributed body heat and extended body forces. Models of 3D soft thermomagnetoelectroelastic thin inclusions are adopted. The issues on the boundary element solution of obtained equations are discussed. The efficient techniques for numerical evaluation of kernels and singular and hypersingular integrals are discussed. Nonlinear polynomial mappings are adopted for smoothing the integrand at the inclusion’s front, which is advantageous for accurate evaluation of field intensity factors. Special shape functions are introduced, which account for a square-root singularity of extended stress and heat flux at the inclusion’s front. Numerical example is presented.
Źródło:
Acta Mechanica et Automatica; 2017, 11, 4; 308-312
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of imperfect interface of anisotropic thermomagnetoelectroelastic bimaterial solids on interaction of thin deformable inclusions
Autorzy:
Sulym, Heorhiy
Vasylyshyn, Andrii
Pasternak, Iaroslav
Powiązania:
https://bibliotekanauki.pl/articles/2204586.pdf
Data publikacji:
2022
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
anisotropic bimaterial
thermomagnetoelectroelastic
imperfect interface
high-temperature conducting
thin inclusion
Opis:
This work studies the problem of thermomagnetoelectroelastic anisotropic bimaterial with imperfect high-temperature conducting coherent interface, whose components contain thin inclusions. Using the extended Stroh formalism and complex variable calculus, the Somigliana-type integral formulae and the corresponding boundary integral equations for the anisotropic thermomagnetoelectroelastic bimaterial with high-temperature conducting coherent interface are obtained. These integral equations are introduced into the modified boundary element approach. The numerical analysis of new problems is held and results are presented for single and multiple inclusions.
Źródło:
Acta Mechanica et Automatica; 2022, 16, 3; 242--249
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical modelling of stationary thermoelastic state for a plate with periodic system of inclusions and cracks
Autorzy:
Zelenyak, Volodymyr
Powiązania:
https://bibliotekanauki.pl/articles/387384.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
stress intensity factor
singular integral equation
inclusion
heat conduction
thermoelasticity
crack
Opis:
Two-dimensional stationary problem of heat conduction and thermoelasticity for infinite elastic body containing periodic system of inclusions and cracks is considered. Solution of the problem is constructed using the method of singular integral equations (SIEs). The numerical solution of the system integral equations are obtained by the method of mechanical quadrature for a plate heated by a heat flow, containing periodic system elliptic inclusions and thermally insulated cracks. There are obtained graphic dependences of stress intensity factors (SIFs), which characterise the distribution of intensity of stresses at the tops of a crack, depending on the length of crack, elastic and thermoelastic characteristics inclusion, relative position of crack and inclusion.
Źródło:
Acta Mechanica et Automatica; 2019, 13, 1; 11-15
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Doubly Periodic Sets of Thin Branched Inclusions in the Elastic Medium: Stress Concentration and Effective Properties
Autorzy:
Sulym, H.
Pasternak, I.
Kutsyk, S.
Grodzki, W.
Powiązania:
https://bibliotekanauki.pl/articles/386923.pdf
Data publikacji:
2013
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
anizotropia
dwuokresowość
zbrojenie
anisotropic
doubly periodic
thin branched inclusion
reinforcement
effective modulus
Opis:
This paper considers the doubly periodic problem of elasticity for anisotropic solids containing regular sets of thin branched inclusions. A coupling principle for continua of different dimension is utilized for modeling of thin inhomogeneities and the boundary element technique is adopted for numerical solution of the problem. The branches of the inclusion can interact both inside the representative volume element and at the interface of neighbor representative elements. A particular example of the elastic medium reinforced by a doubly periodic set of I-beams is considered. Stress intensity and stress concentration inside and outside thin inclusions are determined. The dependence of the effective mechanical properties of the reinforced composite material on the volume fraction of the filament and its rigidity is obtained.
Źródło:
Acta Mechanica et Automatica; 2013, 7, 1; 48-52
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat conduction in anisotropic medium with perfectly conductive thread-like inclusions
Autorzy:
Sulym, Heorhiy
Ilchuk, Nataliia
Pasternak, Iaroslav
Powiązania:
https://bibliotekanauki.pl/articles/387323.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
thread-like inclusion
steady-state heat conduction
anisotropy
boundary integral equation
hypersingular
Opis:
The paper presents a novel approach for the analysis of steady-state heat conduction of solids containing perfectly conductive thread-like inhomogeneities. Modelling of a thread-like heat conductive inhomogeneity is reduced to determination of density of heat distributed along a spatial curve, which replaces the inclusion. Corresponding boundary integral equations are obtained for anisotropic solids with thread-like inclusions. Non-integral terms are computed in a closed form. It is shown that, nevertheless the singularity of the equation is 1/r, it is hypersingular, since the kernel is symmetric. Boundary element approach is adopted for solution of the obtained equations. Numerical example is presented for a rectilinear conductive thread, which verifies derived boundary integral equations.
Źródło:
Acta Mechanica et Automatica; 2019, 13, 4; 251-254
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Boundary integral equations for an anisotropic bimaterial with thermally imperfect interface and internal inhomogeneities
Autorzy:
Sulym, H.
Pasternak, I.
Tomashivskyy, M.
Powiązania:
https://bibliotekanauki.pl/articles/970616.pdf
Data publikacji:
2016
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
bi-material
imperfect interface
thermoelastic
anisotropic
crack
thin inclusion
biomateriał
materiał termoelastyczny
termosprężystość
pęknięcia
Opis:
This paper studies a thermoelastic anisotropic bimaterial with thermally imperfect interface and internal inhomogeneities. Based on the complex variable calculus and the extended Stroh formalism a new approach is proposed for obtaining the Somigliana type integral formulae and corresponding boundary integral equations for a thermoelastic bimaterial consisting of two half-spaces with different thermal and mechanical properties. The half-spaces are bonded together with mechanically perfect and thermally imperfect interface, which model interfacial adhesive layers present in bimaterial solids. Obtained integral equations are introduced into the modified boundary element method that allows solving arbitrary 2D thermoelacticity problems for anisotropic bimaterial solids with imperfect thin thermo-resistant interfacial layer, which half-spaces contain cracks and thin inclusions. Presented numerical examples show the effect of thermal resistance of the bimaterial interface on the stress intensity factors at thin inhomogeneities.
Źródło:
Acta Mechanica et Automatica; 2016, 10, 1; 66-74
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mixed boundary value problem for an anisotropic thermoelastic half-space containing thin inhomogeneities
Autorzy:
Sulym, Heorhiy
Pasternak, Iaroslav
Smal, Mariia
Vasylyshyn, Andrii
Powiązania:
https://bibliotekanauki.pl/articles/386303.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
thermoelasticity
anisotropic half-space
boundary element method
thin inclusion
crack
stress intensity factors
Stroh formalism
Opis:
The paper presents a rigorous and straightforward approach for obtaining the 2D boundary integral equations for a thermoelastic half-space containing holes, cracks and thin foreign inclusions. It starts from the Cauchy integral formula and the extended Stroh formalism which allows writing the general solution of thermoelastic problems in terms of certain analytic functions. In addition, with the help of it, it is possible to convert the volume integrals included in the equation into contour integrals, which, in turn, will allow the use of the method of boundary elements. For modelling of solids with thin inhomogeneities, a coupling principle for continua of different dimensions is used. Applying the theory of complex variable functions, in particular, Cauchy integral formula and Sokhotski–Plemelj formula, the Somigliana type boundary integral equations are constructed for thermoelastic anisotropic half-space. The obtained integral equations are introduced into the modified boundary element method. A numerical analysis of the influence of boundary conditions on the half-space boundary and relative rigidity of the thin inhomogeneity on the intensity of stresses at the inclusions is carried out.
Źródło:
Acta Mechanica et Automatica; 2019, 13, 4; 238-244
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antiplane deformation of a bimaterial with thin interfacial nonlinear elastic inclusion
Autorzy:
Sulym, H.
Piskozub, Y.
Polanski, J.
Powiązania:
https://bibliotekanauki.pl/articles/386464.pdf
Data publikacji:
2018
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
antiplane deformation
longitudinal shear
nonlinear elasticity
interfacial crack
thin inclusion
stress intensity factor
bimaterial
jump function
singular integral equation
Opis:
The problem of longitudinal shear of bimaterial with thin nonlinear elastic inclusion at the interface of matrix materials is considered. Solution of the problem is constructed using the boundary value problem of combining analytical functions and jump functions method. The model of the thin inclusion with nonlinear resilient parameters is built. Solution of the problem is reduced to a system of singular integral equations with variable coefficients. The convergent iterative method for solving such a system is offered for various nonlinear strain models, including Ramberg-Osgood law. Numerical calculations are carried out for different values of non-linearity characteristic parameters for the inclusion material. Their parameters are analysed for the tensely-deformed matrix under loading a uniformly distributed shear stresses and for a balanced system of the concentrated forces.
Źródło:
Acta Mechanica et Automatica; 2018, 12, 3; 190-195
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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