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Computer simulation of the expanding internal pressure was performed for pipes made of steel and aluminum alloy and having uneven wall thickness. For this simulation the software tool ESI Virtual-Performance 2016.0 was used that implements the finite element method. The convergence and accuracy of the solution were estimated by comparison with known solutions. A full factorial computational experiment...
The infrared thermography technique developed in the present study was successfully applied to determine the scale thicknesses in the steel pipe. By finite element method we have calculated the infected pipe surface temperature. We have developed a model for estimation the thickness scale on the inner surfaces pipe. Pipe dimensions and scale layer are taken as geometrical parameter. We have studied...
Generators for wave energy converters are enclosed within sealed containers. The thermal exchange mechanism is based both on natural convection occurring in the air within the container and in the water outside it. Conduction occurs in all other domains. To assess the maximum allowable electrical loading a numerical approach based on thermal simulation and Computational Fluid Dynamics (CFD) is developed...
Through the analysis of dispersion equation and curves of ultrasonic guided waves in the steel pipes, L (0,2) and T (0,1) mode are applied to the defect detection field. The finite element method is used to analysis the propagation and reflection process of L (0,2) and T (0,1) mode guided waves in the steel pipes with depth varying middle defects, and the conclusion that the relationship between the...
Semi-passive shunted piezoelectric layer for sound absorption is a typically multi-physics problem coupled with sound wave equations, structure stress-strain equations, piezoelectric constitutive equations and electric ordinary equations, and it is analyzed with FEM in detail. Frequency response characteristics are simulated when semi-passive piezoelectric sound absorption structure shunted with negative-capacitance,...
Temperature field of cast roll and its thermal deformation were studied during strip casting with elasto-plastic and thermal-stress coupled FEM in this paper. The simulation result was verified with experiment result, indicating that the simulation result is accurate. Then, the initial profile were designed according to the simulation result, and optimized using finite element method (FEM) to make...
Combining classic rolling and casting theory and finite element method (FEM), a rolling force controlling model has been deduced in twin-roll strip casting, which considers the influence of casting velocity and melt level. After accuracy certification, the model has high precision under given conditions, and it can be used to set initial parameters before strip casting and can be used to adjust correlative...
In this paper, a 3-dimensional mathematical model has been developed for the thermo-mechanical coupled analysis of the solidification process of carbon steel in funnelshaped mold using thermo-elastic-plastic finite element method (FEM). The major application of the model is to perform computations of temperature, stress and longitudinal cracking index (LCI) variations in shell. The effects of casting...
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