methods of rails that are based on ultrasonic wave propagation were widely used [ 6 ]. The SAFE approach to determine the dispersive curves is to discretize the domain cross-section by the finiteelementmethod, in a two-dimensional problem (2D). In the
Authors:Alban Kuriqi, Mehmet Ardiçlioglu and Ylber Muceku
, Daneshmand F.
Three-dimensional smoothed fixed grid finiteelementmethod for the solution of unconfined seepage problems , Finite Elements in Analysis and Design , Vol. 64 , 2013 , pp. 24 – 35
Authors:Michael Jakubinek, Catherine Whitman and Mary White
Finite element analysis is used to explore composites of negative thermal expansion materials with positive thermal expansion
materials (ZrW2O8 in Cu and ZrO2 in ZrW2O8) and evaluate how thermal and mechanical properties, rates of cooling/heating, and geometry and packing fraction influence
the overall expansion and thermal stress. During rapid temperature changes, the transient short-time thermal expansion can
be considerably larger than the steady-state value. Furthermore, thermal stress in the composite can be large, especially
at the interface between the materials, and can exceed the material strength.
The paper describes efficient methods to post-process results from the finite element analysis. Amount of data produced by the complex analysis is enormous. However, computer performance and memory are limited and commonly-used software tools do not provide ways to post-process data easily. Therefore, some sort of simplification of data has to be used to lower memory consumption and accelerate data loading. This article describes a procedure that replaces discrete values with a set of continuous functions. Each approximation function can be represented by a small number of parameters that are able to describe the character of resulting data closely enough.
Authors:Katarzyna Fonteyn, Anouar Belahcen and Antero Arkkio
The measurements done on magnetic bearings usually give higher losses than have been expected through the simulations. One of the reasons for the difference might be that the stresses introduced by mechanical or thermal treatments are not taken into account when a model is developed. In this paper, a core loss model of the magnetic bearings, taking the stresses in the laminations of the rotor into account is proposed. The model is used in the finite element analysis of radial magnetic bearings.
In the present study, the performance of concrete sandwich panel against fire and axial load has been considered. A finite element model of a sandwich wall is presented and evaluated the performance under different temperature (200, 400, 600 °C. The ratio of width, thickness and length of wall are constant and the axial load enters on the top of wall. The maximum displacement and stress in different models shows the capacity of wall is increased at high temperature. The displacement has dramatically increased at temperature loading of 800 °C and it has gained which shows poor efficiency of wall at high temperatures.
A new preconditioned conjugate gradient (PCG)-based domain decomposition method is given for the solution of linear equations
arising in the finite element method applied to the elliptic Neumann problem. The novelty of the proposed method is in the
recommended preconditioner which is constructed by using cyclic matrix. The resulting preconditioned algorithms are well suited
to parallel computation.