Temat: boundary value - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Weakly nonlinear boundaty value problems for differential systems with impulse action
Slabonelinejjnye kraevye zadachi dlja sistem differencial'nykh uravnenijj s impul'snym vozdejjstviem
Autorzy:: Ovchar, R.
Powiązania:: https://bibliotekanauki.pl/articles/76835.pdf
Data publikacji:: 2013
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: nonlinear boundary value problem
linear boundary value problem
differential equation
Cauchy problem
Opis:: Coefficient obtained sufficient conditions for the existence and iterative algorithm of solutions of weakly nonlinear boundary value problems for ordinary differential equations with impulse action in general, when the number of boundary conditions does not coincide with the order of the differential system.
Коэффициенты получены с достаточных условий для существования и итерационного алгоритма решения через слабо нелинейни краеви задачи для обыкновенных дифференциальных уравнений с импульсным воздействием в общем случае, когда число граничных условий не совпадает с порядком дифференциального системы.
Źródło:: Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 3
1730-8658
Pojawia się w:: Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: On a comparison principle for a quasilinear elliptic boundary value problem of a nonmonotone type
Autorzy:: Křížek, Michal
Liu, Liping
Powiązania:: https://bibliotekanauki.pl/articles/1339322.pdf
Data publikacji:: 1996
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:: comparison principle
anisotropic heat conduction
nonlinear boundary value problem
Opis:: A nonlinear elliptic partial differential equation with the Newton boundary conditions is examined. We prove that for greater data we get a greater weak solution. This is the so-called comparison principle. It is applied to a steady-state heat conduction problem in anisotropic magnetic cores of large transformers.
Źródło:: Applicationes Mathematicae; 1996-1997, 24, 1; 97-107
1233-7234
Pojawia się w:: Applicationes Mathematicae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Mathematical modelling of the inrun profile of a ski jumping hill with the controlled track reaction force
Modelowanie profilu najazdu skoczni narciarskiej o zadanych własnościach dynamicznych toru
Autorzy:: Palej, R.
Filipowska, R.
Powiązania:: https://bibliotekanauki.pl/articles/280261.pdf
Data publikacji:: 2009
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: inrun profile
ski jumping hill
nonlinear boundary value problem
shooting method
Opis:: The paper deals with the problem of modelling the inrun profile of a ski jumping hill with a variable radius of curvature. It presents the possibility of reducing the inertia force acting on a ski jumper in the immediate neighbourhood of the take-off track while maintaining the inclination angles of the starting segment of the track and the take-off track which are applied in the present day constructions. The problem of a further decrease of the inertia force resulting from the increase of the inclination angle of the starting segment has also been discussed. Finally, the profiles of the inrun which do not contain the inflexion point have been determined.
Praca dotyczy zagadnienia projektowania najazdu skoczni narciarskiej o zmiennym promieniu krzywizny. W pracy pokazano możliwość obniżenia reakcji normalnej toru w bezpośrednim sąsiedztwie z progiem, przy zachowaniu stosowanych w obecnych rozwiązaniach kątów nachylenia części startowej i progu. Zbadano również możliwość dalszego obniżenia reakcji normalnej w wyniku zwiększenia kąta nachylenia części startowej. Na koniec wyznaczono łagodne pod względem dynamicznym profile najazdu nie zawierające punktu przegięcia.
Źródło:: Journal of Theoretical and Applied Mechanics; 2009, 47, 1; 229-242
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Numerical simulation of liquid motion in a partly filled tank
Autorzy:: Warmowska, M.
Powiązania:: https://bibliotekanauki.pl/articles/255682.pdf
Data publikacji:: 2006
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: nonlinear boundary value problem
linear elliptic equations
sloshing
free-surface potential flows
Opis:: The paper presents the problem of liquid motion in a 2D partly filled tank. It is assumed that the flow of liquid in tank is a potential, hence it can be described by Laplace equations with appropriate boundary conditions. The problem is solved using the boundary element method. The developed numerical algorithm makes it possible to determine the free surface elevation, the velocity field and the pressure field during the liquid motion in the tank. The area occupied by liquid is represented by a mesh changing in time. Numerical computations are performed for translatory and rotational motion of the tank. The results of numerical computations are verified by experiment.
Źródło:: Opuscula Mathematica; 2006, 26, 3; 529-540
1232-9274
2300-6919
Pojawia się w:: Opuscula Mathematica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Investigation of mathematical models for vibrations of one dimensional environments with considering nonlinear resistance forces
Autorzy:: Pukach, P.
Sokhan, P.
Stolyarchuk, R.
Powiązania:: https://bibliotekanauki.pl/articles/410895.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:: mathematical model
nonlinear vibrations
nonlinear boundary value problem
Galerkin method
nonlinear elastic properties
Opis:: In this paper we consider important classes of one dimensional environments, bending stiffness of which can be neglected. It is impossible to apply approximate analytical method of solution of mathematical models of dynamic processes. So justification of existence and uniqueness of solutions, carried out a qualitative their evaluation, based on numerical analysis are considering in this paper. Also the features of dynamic processes of some of examined class of systems are analyzed. Methods of qualitative study of oscillations for restricted and unrestricted bodies under the influence of the resistance forces, described in this paper are based on the general principles of the theory of nonlinear boundary value problems – Galerkin method and the method of monotonicity. Scientific novelty consists in generalization these methods of studying for nonlinear problems at new classes of oscillating systems, justification of solution correctness for specified mathematical models that have practical application in real engineering vibration systems.
Źródło:: ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 1; 97-102
2084-5715
Pojawia się w:: ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Qualitative methods for research of transversal vibrations of semi-infinite cable under the action of nonlinear resistance forces
Autorzy:: Pukach, P.
Kuzio, I.
Sokil, M.
Powiązania:: https://bibliotekanauki.pl/articles/411373.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:: mathematical model
nonlinear vibrations
nonlinear boundary value problem
Galerkin method
metod of monotony
unbounded domain
Opis:: The aim of paper is to study the solution of the problem of nonlinear transverse vibrations of elastic elongated body under the force of resistance in unbounded domain. Such problems have applications in various technical systems - vibration of pipelines, railways, long bridges, electric lines, optical fibers. Unboundedness of the area creates more fundamental difficulties in the study of the problem. For the considered models of nonlinear oscillations have no general analytical techniques for determining the dynamic characteristics of the oscillatory process. Therefore it is sugges ted to use qualitative methods of the theory of nonlinear boundary value problems to obtain correct problem solution conditions (existence and uniqueness of the solution). In the paper conditions of the correctness of the solution of mathematical model for these nonlinear systems (sufficient conditions of the existence and uniqueness in the class of locally integrable functions) are obtained. Methods of qualitative study of semi-infinite cable vibrations under the forces of resistance based on general principles of the theory of nonlinear boundary value problems - method of monotony and Galerkin method. Scientific novelty of the work lies in particular in the generalization of methods of studying nonlinear problems on a new class of oscillatory systems In unbounded domains, justifying the correctness of the solution with specified mathematical model, which has practical applications in real engineering oscillatory systems. The technique allows not only for proving the correctness of the model solution, but also has an opportunity in its study to apply various approximate methods.
Źródło:: ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2013, 2, 1; 43-48
2084-5715
Pojawia się w:: ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:: Biblioteka Nauki

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