نتایج جستجو برای: the finite element method

تعداد نتایج: 16277695  

By using the finite element $p$-Version in convection-diffusion problems, we can attain to a stabilized and accurate results. Furthermore, the fundamental of the finite element $p$-Version is augmentation degrees of freedom. Based on the fact that the finite element and the meshless methods have similar concept, it is obvious that many ideas in the finite element can be easily used in the meshl...

Journal: :journal of mining and environment 0
s. e. mirsalari department of mining and metallurgical engineering, yazd university, yazd, iran m. fatehi marji department of mining and metallurgical engineering, yazd university, yazd, iran j. gholamnejad department of mining and metallurgical engineering, yazd university, yazd, iran m. najafi department of mining and metallurgical engineering, yazd university, yazd, iran

analysis of the stresses, displacements, and horizontal strains of the ground subsidence due to underground excavation in rocks can be accomplished by means of a hybridized higher order indirect boundary element/finite difference (be/fd) formulation. a semi-infinite displacement discontinuity field is discretized (numerically) using the cubic displacement discontinuity elements (i.e. each highe...

Journal: :international journal of advanced structural engineering 2011
anand m. gharad r. s. sonparote

starting from two-dimensional (2d) equations of motion, discretized formulations for transient behavior of soil-structure interaction problems have been derived. two different dynamic infinite elements taking into account single and two-wave types are presented in transformed space. by coupling the infinite elements with standard finite elements, an ordinary finite element procedure is used for...

Journal: :bulletin of the iranian mathematical society 2015
d. rostamy f. zabihi

in this article, we study the new streamline diffusion finite element for treating the linear second order hyperbolic initial-boundary value problem. we prove a posteriori $ l^2(l^2)$ and error estimates for this method under minimal regularity hypothesis. test problem of an application of the wave equation in the laser is presented to verify the efficiency and accuracy of the method.

Journal: :iranian journal of science and technology transactions of mechanical engineering 2015
m. afrasiab h. afrasiab m.r. movahhedy g. faraji

in this paper, based on the slab method of analysis, a novel and general approach isdeveloped for studying the radial forging process with curved profile dies. the presented approachis not only more general with respect to previous studies, but it is also easier to understand and useand can be efficiently used for optimization of the die profile depending on the forging geometryand conditions. ...

2013
Vuong Q. Dang Patrick Dular Ruth V. Sabariego Laurent Krähenbühl Christophe Geuzaine

Abstract. A subproblem h-conform eddy current finite element method is proposed for correcting the inaccuracies inherent to thin shell models. Such models replace volume thin regions by surfaces but neglect border e↵ects in the vicinity of their edges and corners. The developed surface-to-volume correction problem is defined as a step of the multiple subproblems applied to a complete problem, c...

اسکندرجوی, محمد صادق, بغلانی, عبدالحسین,

In this paper, wave propagation method was applied to detect damage of structures. Spectral Finite Element Method (SFEM) was used to analyze wave propagation in structures. Two types of structures i.e. rod and Euler-Bernoulli beam were modelled using spectral elements. The advantage of spectral finite element over conventional Finite Element Method (FEM), in wave propagation problems, is its...

Journal: :journal of biomedical physics and engineering 0
sh bazrafkan shiraz university of technology k kazemi shiraz university of technology

background : near infrared spectroscopy imaging is one of the new techniques used for investigating structural and functionality of different body tissues. this is done by injecting light into the medium and measuring the photon intensity at the surface of the tissue. method : in this paper the different medical applications, various imaging and simulation techniques of nirs imaging is describe...

Journal: :international journal of civil engineering 0
r. tarinejad faculty of civil engineering, university of tabriz s. pirboudaghi university of tabriz

it is well-known that dam-reservoir interaction has significant effects on the response of dams to the earthquakes. this phenomenon should be considered more exactly in the seismic design of dams with a rational and reliable dynamic analysis method. in this research, seismic analysis of the dam-reservoir is studied as a wave propagation problem by using legendre spectral element method (sem). t...

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