نتایج جستجو برای: element

تعداد نتایج: 203788  

Journal: :Mobile Genetic Elements 2013

Journal: :BDJ in practice 2022

Journal: :روش های عددی در مهندسی (استقلال) 0
محمد رضایی پژند و محمد رضا سالاری m. rezaiee-pajand and m.r. salari

this paper is about discrete sensitivity analysis. a triangular bending element with constant moment and six degrees of freedom is used. the required derivatives for sensitivity analysis are calculated explicitly. these formulations, finite element method and sequential linear programming are utilized to find shape optimization of plate bending structures. the numerical examples, which show the...

2017
Melvyn B. Ansell Oscar Navarro John Spencer

The efficient and stereoselective synthesis of, or precursors to, multi-substituted alkenes has attracted substantial interest due to their existence in various industrially and biologically important compounds. One of the most atom economical routes to such alkenes is the transition metal catalyzed hetero element–element0 p-insertion into alkynes. This article provides a thorough up-to-date re...

1997
Hong Q. Ding Robert D. Ferraro

A concurrent partilionerforpartitioning Unstructured finite element meshes on distributed memory architectures is developed. The partitioned uses an element-based partitioning strategy 1[s main advantage over the more conventional node-based partitioning strategy is its modular programing approach to the development of parallel applications. The partitionerfirst partitions element centroids ioi...

1997
Steven J. Owen Sunil Saigal

A method is presented for controlling element sizes on the interior of areas during surface meshing. A Delaunay background mesh is defined over which a neighborhood based interpolation scheme is used to interpolate element sizes. A brief description of natural neighbor interpolation is included and compared to linear interpolation. Two specific applications are presented that utilize the sizing...

2014
P. Zajac

In this work, we propose a projection operator based on restricted element-wise projections, which can be applied to a large set of finite element spaces. In contrast to most other projectors, such as the standard interpolation operator or the well-known Clément’s operator, our projection operator does not utilise the node functionals defining the basis functions of the finite element space. Mo...

In this paper, the finite element analysis of two-dimensional linear viscoelastic problems is performed using quadrilateral complex Fourier elements and, the results are compared with those obtained by quadrilateral classic Lagrange elements. Complex Fourier shape functions contain a shape parameter which is a constant unknown parameter adopted to enhance approximation’s accuracy. Since the iso...

Journal: :journal of medical signals and sensors 0

in this study, focuses on applying the hp-version for forward modeling. the eit forward solver is normally based on the conventional finite element method (hfem). in h-fem, the polynomial order p of the element shape functions is constant and the element size h, is decreased. to accurately simulate the forward solution with the hfem, a mesh with large number of nodes and elements is usually need...

2002
J. P. Coyette

The paper focuses on the numerical treatment of transient acoustic problems using finite element (FE) and boundary element (BE) methods. The FE method relies on a pressure formulation and the use of an implicit integration schemes for solving the related second-order differential system. The procedure is shown on cavity (interior) problems but can be extended to exterior problems using the DtN ...

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