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bedayat--houman
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Numerical Analysis of Piles Behavior in Clay under Lateral Load
, M.Sc. Thesis Sharif University of Technology ; Ahmadi, Mohammad Mehdi (Supervisor)
Abstract
There are several factors affecting the behavior and response of a pile under lateral loads. These factors can be divided into two main categories: geometrical factors (e.g. dimensions of the pile, soil, and mesh scheme) and material properties (e.g. shear modulus, bulk modulus, soil elasticity, soil density, and shear strength). Studying the effects and importance of these factors in the final response of the pile (i.e. ultimate forces and displacements) can help design engineers in optimization of their designs. Given the importance of the subject and the possibility of using numerical methods and computer technology to evaluate the behavior of piles, this research attempts to use finite...
Investigate the Relationship between the Structure of the Magnetic and Electrical properties of Iron-Based Soft Magnetic Composite Coated with Nanoparticles Magnetite
, M.Sc. Thesis Sharif University of Technology ; Maddah Hosseini, Hamid Reza (Supervisor) ; Shokrollahi, Houman (Supervisor)
Abstract
In this study, soft magnetic composite properties of iron base with insulation magnetite nanoparticles have been studied. First magnetite nanoparticles were prepared by co-precipitation method. The iron and magnetite particles with different weights were dissolved in acetone until the acetone evaporates and the composition uniformity of iron and magnetite powder was obtained. Then press the button on the 4 samples of 400, 600, 800, 1000 MPa, and the weight of Magnetite 1, 3, 5, 7 and 10 percent were cold. X-ray diffraction and scanning electron microscope test results showed that iron and magnetite are homogenous distributed. The measurement of AC magnetic properties also suggest that by...