Study the effect of changing the different engineering parameters on the performance of the joints used in the metal structures on fire to find their optimal designs by CAD

This research presents a study with the help of Finite Element Method and the use of CATIA V5 program to know the behavior of a permissible link - column used in metal structures at high temperatures (on fire). In this article we will present an analysis using the finite element method using the CATIA V5 program for the effect of different engineering parameters (plate thickness, screw diameter, reinforcement nerves) on the behavior of joints used in metal structures on fire. We also studied the effect of the number of bolts on the stresses and transitions in the link and their comparison with the welding cases. We studied and analyzed the studied model and obtained the deformation and failure schemes at high temperatures, the flow charts and the temperatures that show the behavior of this link to the fire. We also obtained the stress and strain schemes for the link and the transport and load schemes at different temperatures and the behavior of this link at these different temperature.

Testing the Numerical Simulation Of The Behavior Of RC Frame With Damaged Plasticity Model

This study aims to investigate the capacity of numerical models to reproduce the monotonic behavior of reinforced concrete framed structures.

Numerical study of the use of Non-destructive Impact Test methods for the exam of integrity of concrete piles

This research includes a numerical study using Finite Element Method aims to evaluate the ability and accuracy of using Non-destructive Impact Response Method in the assessment of length and cross-sections of intact concrete pile (not deformed) in both time and frequency domains. Therefore, an appropriate numerical model depends on the modeling of both impact force (impulsive load) and distributing medium (pile + soil) and insert them in computing software ABAQUS was carried out. The numerical model was verified corresponding to field measures obtained from literature review and the results showed good agreement between measures and numerical results. Furthermore, the model was applied on a typical example in order to study vibration distribution in the pile due to impulsive load applied on pile top. Mechanical response curve of intact pile was obtained. Then, both of length and cross-section area of the pile were determined. Finally, parametrical study of most important factors (stiffness of soil surrounding the pile and length of pile embedded in the soil) effect on vibration distribution resulted from impulsive load applied on pile top. The parametrical study was carried out in two domains; first one was time domain depending on the direct analysis of particle displacement and velocity and the second was frequency domain depending on analysis of pile mechanical response curve. The results of this research enables to use the proposed numerical model to numerically obtain the time history of particle displacement and velocity in addition to the curve of mechanical response computed in the pile top and forms reference diagrams which is used later to compare with similar diagrams resulted from field test of executed piles. As a result, pile integrity test and detecting of defects in the piles if any. In addition, the limits of the use of both analysis methods adapted in research and choose the best between them according to the case study.

Comparing analysis for modeling liquid in elevated water tank

. In this research, a study of a model of reinforced concrete elevated water tank, with capacity of 900 cubic meters, supported with frame system is carried out using finite element method (FEM). The liquid mass contained in the container is modeled as the sum of two separated messes i.e. impulse mass and convective mass following the recommendations of Eurocode 8 , 2006, for cases full container. The second ones Gareane2011 method . The soil is modeled using (FEM) with energy absorbent boundaries (dampers) to prevent the combination of earthquakes waves.

Design of high selectivity tri-band microstrip BPF using tri-section stepped impedance resonator

In this research, tri-band microstrip band pass filter (BPF) has been designed at frequencies (2.37,3.32 ,5.2)GHz which are located at the domain of WiMAX and WLAN systems’ application by using tri-section stepped impedance resonators TSSIRs with open stub and zero feed line. By changing ratios of impedance of stepped impedance resonator.

Using Matlab/pdetool to Calculate Electrical Field of High Voltage Insulators

The aim of this study is to calculate the electrical field (EF) of some types of high voltage insulators by using numerical methods. There are different methods, which are used to do this, finite element is the most important one. It is possible to find EF in 2D or 3D systems by using Matlab/pdetool, which distinguishes with big capabilities in calculation and view the results, additionally, it is available, cheap and can save time and money for doing this important calculations in high voltage applications .

The study of the electromagnetic field distribution in a 20/0.4kV distribution transformer using the finite element method

This research presents a study of distribution of the electromagnetic fields in three-phase distribution transformer 200kVA-20/0.4kV through the conclusion of the governing electromagnetic equation and solve it using finite element method by FEMM4.2 program.

Finite element and boundary element approaches in magnetostatic problems

In this paper, the simple magnetostatic field is found by means of FEM and also BEM . The aim of this reseach is to find the simple magnetostatic field for any magnetic problem because it is contributed in effective magnetic field for this problem beside the other terms as :the exchange field , anisotropic field and external field.We found that the boundary element method is much more convenient to apply .

Evaluation The Efficiency of a Suggested Model in Emulation The Behavior of R.C. Beams Strengthened with GFRP Strips

Our Paper is a laboratory modeling research to evaluate the efficiency of finite element model in emulation the behavior of R.C. beams with shear deficiencies (ultimate load, mechanism of cracking and failure, load-deflection behavior) strengthened with GFRP strips. We tested nine R.C. beams 200x30x16 cm in three groups, the first consists of three R.C.beams for comparing, the second consists of three strengthened R.C. beams with two sides vertical GFRP strips, and the third also consists of three strengthened R.C. beams with two sides inclined (45°) GFRP strips. We modeled these beams by advanced finite element program Ansys10, and we get results agreed with our laboratory study.

Modeling and Simulation of Electromagnetic Fields in Three-Phase Induction Motors Using ANSYS Software

The study of electromagnetism in electrical machines is critical, especially in the field of design, investment and optimal performance. To achieve this, there are many ways in which varying degrees of accuracy . The main aim of this piece of research is to study electromagnetic fields distribution in 3ph-induction machines using computational numerical methods and proper software, because these fields form the basic principle in machine 's work. It has been used the finite element method aided computer to solve magnetic equations (Maxwell equations). The simulation of magnetic field in induction machine performed by ANSYS-software. The paper shows technique for finding the electromagnetic fields distribution in all parts inside 3phinduction machine to get optimal design.