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In this paper, an analysis of structural integrity to the repair of a gas pipeline is presented. The study is based on a simplified two-dimensional finite elements model. The residual stresses of thermal origin caused by the welding process are evaluated considering the pipeline flowing fluid and the pressure exerted by the fluid. Pipelines in Argentina are periodically inspected following the standards of the American Petroleum Institute (API) and specifications, criteria and experiences developed by each plant. The modeling allows determining weakened areas caused by corrosion or by different types of defects or cracks. This allows planning and prosecuting a localized repair within acceptable safety margins. [ABSTRACT FROM AUTHOR]

This paper presents the design to get a beam-to-column connection stiffer using steel glued-in rods. Some parametric finite element models, which could comprise all the possibilities, were developed to carry out the work. From the analysis of the results, it can be observed the need for the glued-in rods, specially the exterior ones, when it is necessary that the joint resists great loads and moments without overcome the yielding strength limits of the timber. The transverse glued-in rods are necessary to resist the tangential and the perpendicular to the grain stresses in the border between the beam and the column. The interior glued-in rods seem to have a non important role, because the greater part of the compression forces in this area are transmitted by contact between the column and beam surfaces. [ABSTRACT FROM AUTHOR]

This paper presents the use of the finite elements method to study the flanking transmission through the use of the vibration reduction index, for the case of constructive solutions that use floating floors. On one side, the insertion of elastic interlayer in new building solutions is now a very common practice. On the other side, the test procedures for the acoustic study of this kind of sets (concrete floor with elastic interlayer) are very laborious and the existing empirical equations do not match reality in many cases. For this reason, the study of the problem using finite elements would allows giving numerical solution to a wide range of different constructive solutions and numerical prediction for the acoustical isolation could be improved. [ABSTRACT FROM AUTHOR]

In this paper the finite element method is applied to the analysis of a three-phase magnetic induction motor squirrel-cage. Different geometries have been applied in the design of the rotor. These geometric variations of the rotor create an electromagnetic profile for each type of geometry. To study the rotor motion, a frequency analysis of the model has been done. The identifying parameters deduced from the finite element method, are adjusted by evolutionary genetic algorithms. Thus, the parameters in the circuit model were identified for each geometry under consideration. A check of the torque was done to validate the model, verifying the accuracy of the method. [ABSTRACT FROM AUTHOR]

This paper presents a study on the stresses in a joint of three structural timber elements made with punched metal plates. The aim of the work was to determine the effect of significant variables, such as contact between pieces working in compression, thickness of the plate, load levels and the joint design. Parametric finite element models of the joint were developed. The analysis showed that there is a value of the gap between timber pieces over which the contact begins, and another value under which the percentage of contribution of the force transmission by contact keeps constant. These values are independent of the thickness of the plate or the joint design. [ABSTRACT FROM AUTHOR]