نتایج جستجو برای: dimensional boundary element method has been presented three
تعداد نتایج: 5716068 فیلتر نتایج به سال:
The optimization of three dimensional shapes is one of the most common problems addressed in engineering. This work concerns the use of genetic algorithms (GAs) and b-spline-surface modeling for the optimization of boundary element models. The paper summarizes the genetic optimization process. The model boundary is discretized by using the Boundary Element Method (BEM), and selected parts of th...
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.
The BEM is applied to the solution of the torsion problem of non-homogeneous anisotropic non-circular prismatic bars. The problem is formulated in terms of the warping function. This formulation leads to a second order partial differential equation with variable coefficients, subjected to a generalized Neumann type boundary condition. The problem is solved using the Analog Equation Method (AEM)...
with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...
A vortex boundary element method is developed for the grid-free simulation of time-dependent , incompressible, viscous ow in three-dimensional conngurations. The numerical scheme is based on a combination of the Lagrangian vortex method to capture the convection and stretch of the vortical eld, the random walk method to describe the diiusion process, and the boundary element method to impose th...
learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...
in the present study, a spectral finite element method is developed for free and forced transverse vibration of levy-type moderately thick rectangular orthotropic plates based on first-order shear deformation theory. levy solution assumption was used to convert the two-dimensional problem into a one-dimensional problem. in the first step, the governing out-of-plane differential equations are tr...
In this study, the Boundary Element Method (BEM) was employed for numerical determination of response a layered half-space. The material behaviour soil assumed to be isotropic and linear elastic. BEM used in Fourier transform space (FTS). focus paper is determine stress deflection distributions interior points To achieve aim, computer program developed three-dimensional elastic or visco-elastic...
in recent year, the evolutionary structural optimization (eso) method, has been applied as an effective tool for structures design. the concept of eso method is to use the finite element results in each iteration of process and removal of inefficient material based on these results. in this method there are several experimental parameters such as rejection rate and evolutionary rate that are e...
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