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The paper describes the evaluation of the pedestrian kinematics after a collision with a Sport Utility Vehicle (SUV) with a high bumper. To meet the goal two approaches were chosen. First, the authors carried out the SUV to pedestrian strike simulation using the certified, finite element lower legform impactor. The impact procedure mirrored the car vs. pedestrian collision described in the current...
Plastic profiles produced by extrusion die are cooled down and calibrated by calibrators, so it is very important to properly design the cooling system in calibrator for the profile quality. Based on the finite element method (FEM) and the finite difference method (FDM), the numerical simulation of the cooling process is realized for plastic profile within calibrator. The simultaneous shape and topology...
3D model was established by analyzing the flow of ceramic paste in the screw channel. Set the boundary conditions on the premises of "only the barrel rotating", "only the screw rotating", "only the flight rotating" and "the screw root and flight rotating together" respectively, numerically simulated the paste flow with finite element analysis software ANSYS,...
Considering interaction of tunnel-soil-building, the masonry structure building with strip foundation crossed by shield tunnel in 45 degree was simulated by 3D FEM MIDAS/GTS software. The settlement and strain of building was analyzed. The results show that: the building was slightly uplifted first, and then followed by rapid settlement during shield tunnel excavating. Uneven settlement was still...
Blasting action plays a very important role in slope stability and the effect of rock fragmentation in stonework cutting excavation. Based on engineering practices, this paper applies dynamic finite element method and conducts a numerical simulation of the cutting excavation process. It have conducted researches on the stress field inside rocks in millisecond delay blasting, Von-Mises and other domino...
In the research of pile's lateral capacity, the effects of pile cap are usually neglected to make the problem simplified. Site tests demand a lot of time and money, a few data published can be obtained, even few the test of pile with cap, so it's hard to figure out the effect of cap on the lateral capacity of single pile. By using ABAQUS finite element software, three dimensional numerical simulation...
This paper used the finite element method to analyze the cerebrovascular bifurcation. By comparison, we constructed two intracranial artery bifurcation vessel models with different angles, and considered different model how to influence vascular blood flow based on the basic principles of hemodynamics. Through experiment, we mainly computed the value of blood velocity and wall pressure, and compared...
The quintuple-gated FEA was measured its specific electron beam spot diameter by improved Knife-Edged method. This result suggested that the spot diameter was less than 40μm at 1mm distance. Developing this result, we proposed a concept of micro-column electron beam microscopes using multi-gated FEA. In a simplest configuration for fabrication the device, means structure was not optimized for microscopes,...
Eddy current (EC) nondestructive testing (NDT) based on probe impedance changes in the crack regions is considered in this paper. For this a numerical simulation is introduced for the development of the EC-NDT system using 3D finite element software. This model is used to simulate the muscle cracks with various dimension and prepares the data required for artificial neural network. The neural network...
In this paper an accurate finite element time domain analysis of electromagnetic wave propagation in Electromagnetic Acoustics Transducer (EMAT) is presented. The suggested approach considers the solution "complete" source current density. This model is shown to give more accurate results. A detailed investigation has been performed varying model parameters such as lift off and coil dimension.
A novel model of permanent magnetic double-phase linear stepper motor has been presented and the numerical computation model of magnetic field for the linear stepper motor has been established. Moreover, the dynamic variations of magnetic field varying with the current cycle during the whole moving process have been numerically simulated using the finite element method. Furthermore, influences of...
In this paper, an effective method for predicting cogging torque developed in high precision permanent magnet motors used in data storage devices is presented. The torque component due to transition of magnet polarity over slot opening is studied in details, numerically and analytically, to gain in depth understanding of the torque development mechanism. The resultant cogging torque has good agreement...
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