Results 11 to 20 of about 20,140 (253)

On the Combination of the Laplace Transform and Integral Equation Method to Solve the 3D Parabolic Initial Boundary Value Problem [PDF]

open access: yesAxioms
We consider a two-step numerical approach for solving parabolic initial boundary value problems in 3D simply connected smooth regions. The method uses the Laplace transform in time, reducing the problem to a set of independent stationary boundary value ...
Roman Chapko, Svyatoslav Lavryk
doaj   +2 more sources

Asymptotically accurate error estimates of exponential convergence for the trapezoidal rule

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2021
In many applied problems, efficient calculation of quadratures with high accuracy is required. The examples are: calculation of special functions of mathematical physics, calculation of Fourier coefficients of a given function, Fourier and Laplace ...
Aleksandr A. Belov   +1 more
doaj   +1 more source

Stress–singularity analysis in space junctions of thin plates [PDF]

open access: yes, 2000
The stress singularity in space junctions of thin linearly elastic isotropic plate elements with zero bending rigidities is investigated. The problem for an intersection of infinite wedge-shaped elements is considered first and the solution for each ...
Mikhailov, SE, Namestnikova, IV
core   +1 more source

Plane problem of discrete environment mechanics

open access: yesПроблеми трибології, 2022
Many engineering problems related to the design of structures and machines, the mathematical description of technological processes, etc., are reduced to the need to solve a plane problem for materials with a significant effect of internal friction on ...
O.V. Bagrii
doaj   +1 more source

On eigenvalues of third order composite type equations with regular boundary value conditions

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2019
In the paper the question about distribution of eigenvalues of third - order composite type equations with regular, more precisely, with periodic boundary value conditions is studied.
N.S. Imanbaev, M.N. Ospanov
doaj   +1 more source

Eigenvalue enclosures and exclosures for non-self-adjoint problems in hydrodynamics [PDF]

open access: yes, 2010
In this paper we present computer-assisted proofs of a number of results in theoretical fluid dynamics and in quantum mechanics. An algorithm based on interval arithmetic yields provably correct eigenvalue enclosures and exclosures for non-self-adjoint ...
Langer, M.   +10 more
core   +1 more source

On eigenfunction expansions associated with wave propagation along ducts with wave-bearing boundaries [PDF]

open access: yes, 2007
A class of boundary value problems, that has application in the propagation of waves along ducts in which the boundaries are wave-bearing, is considered.
Lawrie, JB
core   +1 more source

Elastic Equilibrium of Porous Cosserat Media with Double Porosity

open access: yesAdvances in Mathematical Physics, 2016
The static equilibrium of porous elastic materials with double porosity is considered in the case of an elastic Cosserat medium. The corresponding three-dimensional system of differential equations is derived.
Roman Janjgava
doaj   +1 more source

A complex variable boundary element method for a class of boundary value problems in anisotropic thermoelasticity [PDF]

open access: yes, 1999
A boundary element method based on the Cauchy's integral formulae, called the complex variable boundary element method (CVBEM), is proposed for the numerical solution of boundary value problems governing plane thermoelastic deformations of anisotropic ...
Clements, D., Cooke, T., Ang, W.
core   +1 more source

A brief historical perspective of the Wiener-Hopf technique [PDF]

open access: yes, 2007
It is a little over 75 years since two of the most important mathematicians of the 20th century collaborated on finding the exact solution of a particular equation with semi-infinite convolution type integral operator.
Lawrie, Jane B.   +3 more
core   +1 more source

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