Sharif Digital Repository

Effect of temper rolling and subsequent annealing on texture development and magnetic permeability of semi-processed electrical steel with 2.3 wt.% Si

Author

Ahmadian, P.

Publisher

Carl Hanser Verlag,

Pub. Year

2018

Subjects

Etch-pit technique. / Magnetic permeability. / Strain induced boundary migration. / Temper rolling. / Texture component. / Annealing. / Magnetic permeability. / Magnetism. / Silicon steel. / Electrical steels. / Etch-pit technique. / Grain oriented electrical steel. / Strain induced boundary migrations. / Temper rolling. / Texture components. / Texture development. / Vibrating samples. / Single crystals.

Discrete feedback-based dynamic voltage scaling for safety critical real-time systems

Author

Ahmadian, A. S.

Pub. Year

2013

Subjects

Hard real-time embedded systems. / Task splitting. / Dynamic voltage scaling. / Fault-tolerant hard real-time systems. / Feed-back based. / Low energy consumption. / Voltage settings. / Energy utilization. / Fault tolerance. / Voltage stabilizing circuits. / Real time systems. / Energy conservation. / Energy efficiency. / Experimental study. / Frequency analysis. / Numerical model. / Tolerance. / Trade-off. / Daphne virus S.

Application of nonlocal theory in dynamic pull-in analysis of electrostatically actuated micro and nano beams

Author

Ahmadian, M. T.

Pub. Year

2011

Subjects

Beam length. / Classical mechanics. / Differential forms. / Differential quadrature methods. / Doubly clamped beam. / Dynamic behaviors. / Elastic restoring forces. / Equation of motion. / Galerkin decomposition. / Inertia force. / Nano electromechanical systems. / Nano scale. / Non-local effect. / Nonlocal theory. / Pull-in. / Pull-in instability. / Pull-in voltage. / Design. / Differentiation (calculus) / Electrostatic actuators. / Equations of motion. / Nanosystems. / Ordinary differential equations. / Partial differential equations. / Stress analysis. / Constitutive equations.

A new model for dynamic analysis of side mounted diffuser valve micropumps

Author

Ahmadian, M. T.

Publisher

American Society of Mechanical Engineers,

Pub. Year

2006

Subjects

Actuators. / Damping. / Diffusers (fluid) / Durability. / Maintenance. / Mathematical models. / Piezoelectric devices. / Damping forces. / Excitation frequency. / Fluid-membrane interaction. / Inertial forces. / Micropump system models. / Valve micropumps. / Valves (mechanical)

Design optimization by numerical characterization of fluid flow through the valveless diffuser micropumps

Author

Ahmadian, M. T.

Publisher

Institute of Physics Publishing,

Pub. Year

2006

Online prediction of plate deformations under external forces using neural networks

Author

Ahmadian, M. T.

Publisher

American Society of Mechanical Engineers (ASME),

Pub. Year

2006

Subjects

Computational methods. / Convergence of numerical methods. / Deformation. / Inverse problems. / Machine design. / Plates (structural components) / External loads. / Nonlinear functional relationships. / Online prediction. / Neural networks.

Modeling Paramecium swimming in a capillary tube

Author

Sarvestani, A. N.

Publisher

Sharif University of Technology

Pub. Year

2016

Subjects

Modeling. / Modified boundary element. / Swimming. / Biomimetics. / Capillary tubes. / Hydrodynamics. / Models. / Fluid dynamic equations. / Gaining insights. / Hydrodynamic interaction. / Internal organs. / Surface distortion. / Surgery systems. / Fluid dynamics. / Paramecium.

Passive position finding of stationary targets: Based on circulation and the least square concept

Author

Ahmadian, A.

Pub. Year

2012

Subjects

Least Square. / bearing measurement. / Convex optimization. / DOA. / Least square. / Dimensional position. / DOA. / Error function. / Circulation. / Least-square filters. / Position finding. / Random noise. / Stationary targets. / Boiler circulation. / Convex optimization. / Signal processing. / Least squares approximations.

New attacks on UMTS network access

Author

Ahmadian, Z.

Pub. Year

2009

Subjects

Authentication and key agreement. / False BTS. / GSM. / UMTS. / Authentication and key agreements. / GSM-UMTS. / Impersonation attack. / Interworking. / UMTS networks. / Authentication. / Wireless networks.

Analytical approach to vibration analysis of a pendulum wrapping on a cylinder

Author

Mazaheri, H.

Pub. Year

2011

Subjects

Analytical approach. / Analytical results. / Dual role. / Large amplitude. / Multiple scales methods. / Nonlinear frequency. / Nonlinear oscillation. / Perturbation method. / System frequency. / Cylinders (shapes) / Equations of motion. / Exhibitions. / Intelligent mechatronics. / Mechanical engineering. / Pendulums. / Vibration analysis. / Nonlinear equations.

Nonlinear vibration analysis of a micro beam exposed to an external flow

Author

Mazaheri, H.

Pub. Year

2011

Subjects

Constant velocities. / External flow. / High sensitivity. / Micro beams. / Micro-cantilevers. / Non-linear vibrations. / Nonlinear differential equation. / Nonlinear vibration analysis. / Variational iteration method. / Vibration frequency. / Differential equations. / Exhibitions. / Flow velocity. / Intelligent mechatronics. / Mechanical engineering. / Runge Kutta methods. / Vibration analysis. / Iterative methods.

Deflection and vibration analysis of a spherical structure using a newly designed spherical super element

Author

Ahmadian, M. T.

Pub. Year

2010

Subjects

Deflection. / FEM. / Spherical super element. / Biological science. / Computational time. / Dynamic and static response. / Geometrical configurations. / Numerical techniques. / Solid structures. / Spherical structures. / Spherical super elements. / Deflection (structures) / Finite element method. / Mechanical engineering. / Vibration analysis. / Spheres.

Development of empirical equations for prediction of modulus of elasticity for monodisperse metallic foams

Author

Ahmadian, M. T.

Pub. Year

2014

Subjects

Empirical equation. / Modulus of elasticity. / Aluminum. / Cast iron. / Elastic moduli. / Forecasting. / Mechanical properties. / Porosity. / Analytical approach. / Closed-cell aluminum foam. / Lightweight materials. / Metallic foam. / Non-linear relationships. / Porous aluminum. / Porous structures. / Finite element method.

A coupled two degree of freedom model for nano/micromirrors under van der waals force

Author

Moeenfard, H.

Pub. Year

2012

Subjects

Instability. / Equilibrium equation. / Implicit function theorem. / Minimum potential energy. / Nano/micromirror. / Pull-in. / Torsion stiffness. / Two-degree-of-freedom models. / Vdw force. / Design. / Nanosystems. / Plasma stability. / Stiffness. / Torsional stress. / Van der Waals forces.

Estimation of modulus of elasticity for closed-cell aluminum foam

Author

Ahmadian, M. T.

Pub. Year

2012

Subjects

Analytical approach. / Closed-cell aluminum foam. / Empirical equations. / Mono-disperse. / Non-linear relationships. / Pore diameters. / Mechanical engineering. / Porosity. / Elastic moduli.

A coupled bending-torsion model for electrostatically actuated torsional nano/micro-actuators with considering influence of van der Waals force

Author

Moeenfard, H.

Pub. Year

2013

Subjects

Bending stiffness. / Equilibrium behavior. / Function theorems. / Instability modes. / Newton's second law. / Pull-in parameters. / Torsion stiffness. / Two-degree-of-freedom models. / Electrostatic actuators. / Torsional stress. / Van der Waals forces. / Actuators.

Analytical modeling of the effects of electrostatic actuation and casimir force on the pull-in instability and static behavior of torsional nano/micro actuators

Author

Moeenfard, H.

Pub. Year

2013

Subjects

Casimir force. / Electrostatic actuation. / Pull-in instability. / Straight forward perturbation expansion. / Torsional nano/micro actuators.

Nonlinear oscillation analysis of a pendulum wrapping on a cylinder

Author

Mazaheri, H.

Pub. Year

2012

Subjects

Simple pendulum. / Analytical results. / Dual role. / Equation of motion. / Large amplitude. / Multiple scales methods. / Nonlinear oscillation. / Perturbation method. / Simple pendulums. / System frequency. / Time response. / Equations of motion. / Oscillators (mechanical) / Pendulums. / Cylinders (shapes) / Amplitude. / Cylinder. / Frequency analysis. / Nonlinearity. / Numerical model.

Analytical solutions for the static instability of Micro/Nano mirrors under the combined effect of capillary force and Casimir force

Author

Moeenfard, H.

Pub. Year

2011

Subjects

Analytical tool. / Capillary force. / Casimir force. / Combined effect. / Governing equations. / Homotopy Perturbation Method (HPM) / HPM. / Nano/micromirror. / Rotation angles. / Stability limit. / Static instability. / Tilting angle. / Binary mixtures. / Exhibitions. / Mechanical engineering. / Microwave devices. / Mirrors. / Stability. / Wet etching. / Quantum theory.

Closed form solutions for the statical behavior of micromirrors under capillary forces

Author

Moeenfard, H.

Pub. Year

2011

Subjects

Instability. / Accurate design. / Analytical method. / Analytical results. / Capillary force. / Closed form solutions. / Design equation. / Energy method. / Equilibrium point. / Fabrication process. / Homotopy Perturbation Method (HPM) / HPM. / Micro mirror. / Minimum potential energy principle. / Pull-in. / Rotation angles. / Static behaviors. / Static instability. / Exhibitions. / Mechanical engineering. / Newton-Raphson method. / Numerical methods. / Plasma stability. / Microwave devices.