Results 71 to 80 of about 52,608 (198)

Numerical simulation study on the evolution of the temperature field and frozen wall in fractured rock mass

open access: yesDeep Underground Science and Engineering, EarlyView.
The evolution of the temperature field and frozen wall under different fracture conditions was examined by an artificial ground freezing‐based thermal‐hydraulic coupled model. It was observed that fracture inclination affects the interaction extent of freezing pipes and fracture, while phase transition extent is the dominant factor for heat transfer in
Chenyi Zhang   +9 more
wiley   +1 more source

Colombeau's theory and shock wave solutions for systems of PDEs

open access: yesElectronic Journal of Differential Equations, 2000
In this article we study the existence of shock wave solutions for systems of partial differential equations of hydrodynamics with viscosity in one space dimension in the context of Colombeau's theory of generalized functions.
F. Villarreal
doaj  

Numerical MLPG Analysis of Piezoelectric Sensor in Structures

open access: yesSlovak Journal of Civil Engineering, 2014
The paper deals with a numerical analysis of the electro-mechanical response of piezoelectric sensors subjected to an external non-uniform displacement field.
Staňák Peter   +3 more
doaj   +1 more source

Performance Investigation of Integrated Model of Quarter Car Semi-Active Seat Suspension with Human Model

open access: yesApplied Sciences, 2020
In this paper, an integrated model of a semi-active seat suspension with a human model over a quarter is presented. The proposed eight-degrees of freedom (8-DOF) integrated model consists of 2-DOF for the quarter car model, 2-DOF for the semi-active seat
Saransh Jain   +3 more
doaj   +1 more source

DISTANCE MEASUREMENT BASED ON A SINGLE DEFOCUSED PHOTOGRAPH [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research. Westudied a method of estimating the object distance on the basis of its single defocused photograph. The method is based on the analysis of image defocus at the contour points corresponding to borders of photographed objects.
N. A. Degotinsky, V. R. Lutsiv
doaj   +1 more source

Interaction of Dirac δ$$ \delta $$‐Waves in the Inviscid Levine and Sleeman Chemotaxis Model

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This article investigates interactions of δ$$ \delta $$‐shock waves in the inviscid Levine and Sleeman chemotaxis model ut−λ(uv)x=0$$ {u}_t-\lambda {(uv)}_x=0 $$, vt−ux=0$$ {v}_t-{u}_x=0 $$. The analysis employs a distributional product and a solution concept that extends the classical solution concept.
Adelino Paiva
wiley   +1 more source

Corrected Fourier series and its application to function approximation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
Any quasismooth function f(x) in a finite interval [0,x0], which has only a finite number of finite discontinuities and has only a finite number of extremes, can be approximated by a uniformly convergent Fourier series and a correction function.
Qing-Hua Zhang   +2 more
doaj   +1 more source

New operational relations for mathematical models of local nonequilibrium heat transfer

open access: yesРоссийский технологический журнал, 2022
Objectives. Recently, interest in studying local nonequilibrium processes has increased in the context of the development of laser technologies, the possibility of reaching ultrahigh temperatures and pressures, and the need for a mathematical description
E. M. Kartashov
doaj   +1 more source

Numerical and Experimental Fracture Analysis of 3D‐Printed ABS Components: Effects of Infill Pattern, Raster, and Printing Orientation

open access: yesPolymer Engineering &Science, EarlyView.
Effect of infill pattern, raster angle, and build orientation on the fracture behavior of FFF‐printed ABS, experimentally characterized and numerically predicted using XFEM with cohesive zone modeling. ABSTRACT Additive manufacturing (AM), particularly Fused Filament Fabrication (FFF), has emerged as a transformative approach for polymer‐based ...
Victor Justen da Silveira Machado   +1 more
wiley   +1 more source

Meshless Modelling of Laminate Mindlin Plates under Dynamic Loads

open access: yesCommunications, 2012
Collocation method and Galerkin method have been dominant in the existing meshless methods. A meshless local Petrov-Galerkin (MLPG) method is applied to solve laminate plate problems described by the Reissner-Mindlin theory for transient dynamic loads ...
Milan Zmindak, Daniel Riecky
doaj   +1 more source

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