Volume 49, Issue 2
مرور بر اساس
ارسال های اخیر
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Magneto-Thermo mechanical vibration analysis of FG nanoplate embedded on Visco Pasternak foundation
(University of Tehran, 2018-12-01)Article history:Received: 12 July 2018 Accepted: 1 September 2018 Available online In this paper, the mechanical vibration analysis of functionally graded (FG) nanoplate embedded in visco Pasternak ...
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Dynamic behaviour of concrete containing aggregate resonant frequency
(University of Tehran, 2018-12-01)The need to design blast resistant civilian structures has arisen due to aggressor attacks on many civilian structures around the world. Achieving vibration and wave attenuation with locally resonant metamaterials has ...
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Magneto-mechanical Stimulation of Bone Marrow Mesenchymal Stromal Cells for Chondrogenic Differentiation Studies
(University of Tehran, 2018-12-01)Mechanical interaction of cells and their surroundings are prominent in mechanically active tissues such as cartilage. Chondrocytes regulate their growth, matrix synthesis, metabolism, and differentiation in response to ...
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Impeller and volute design and optimization of the centrifugal pump with low specific speed in order to extract performance curves
(University of Tehran, 2018-12-01)Now a day centrifugal pumps are vital components of industries. Certainly, one of the most important specifications of centrifugal pumps are the performance curves. In the present work, performance curves of a centrifugal ...
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ON MAXWELL'S STRESS FUNCTIONS FOR SOLVING THREE DIMENSIONAL ELASTICITY PROBLEMS IN THE THEORY OF ELASTICITY
(University of Tehran, 2018-12-01)The governing equations of three dimensional elasticity problems include the six Beltrami-Michell stress compatibility equations, the three differential equations of equilibrium, and the six material constitutive relations; ...
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Effects of Casting Speed and Runner Angle on Macrosegregation of Aluminium-Copper Alloy.
(University of Tehran, 2018-12-01)Abstract During the solidification of binary metal alloys, chemical heterogeneities at product scale over a long distance range (1cm-1m) develop and this has detrimental effect on the resulting mechanical properties ...
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Fatigue and Anisotropic behaviours of cold rolled AA1200 Aluminium Alloy
(University of Tehran, 2018-12-01)This study examines the fatigue and anisotropy behaviour of cold rolled AA1200 aluminium alloy for light weight automotive connecting rod application. Aluminium (Al) 1200 ingots were melted at temperature of 680 0C (after ...
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A two dimensional Simulation of crack propagation using Adaptive Finite Element Analysis
(University of Tehran, 2018-12-01)Finite element method (FEM) is one of the most famous methods which has many applications in varies studies such as the study of crack propagation in engineering structures. However, unless extremely fine meshes are employed, ...
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Evaluation of Thermo-mechanical stress in work rolls of ring rolling mill under thermal and mechanical loading
(University of Tehran, 2018-12-01)The defect in work rolls directly influence the forming cost and the final shape of the product. The researchers tend to investigate the thermo-mechanical stress in work roll of rolling machines. These stresses may reduce ...
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Longitudinal Magnetic Field Effect on Torsional Vibration of Carbon Nanotubes
(University of Tehran, 2018-12-01)Torsional dynamic analysis of carbon nanotubes under the effect of longitudinal magnetic field is carried out in the present study. Torque effect of an axial magnetic field on a carbon nanotube has been defined using ...
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Prediction and optimization of load and torque in ring rolling process through development of artificial neural network and evolutionary algorithms
(University of Tehran, 2018-12-01)Developing artificial neural network (ANN), a model to make a correct prediction of required force and torque in ring rolling process is developed for the first time. Moreover, an optimal state of process for specific range ...
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Behavioral Optimization of Pseudo-Neutral Hole in Hyperelastic Membranes Using Functionally graded Cables
(University of Tehran, 2018-12-01)Structures consisting of cables and membranes have been of interest to engineers due to their higher ratio of strength to weight and lower cost compared to other structures. One of the challenges in such structures ...
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Thermal simulation of two-phase flow in under-balanced drilling operation with oil and gas production
(University of Tehran, 2018-12-01)The accurate prediction of wellbore temperature distribution helps to accurately estimate well pressure profile and bottom-hole pressure (BHP) which is important in the under-balanced drilling (UBD) operation. In this paper ...
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Heat Transfer Study of Convective-Radiative Fin under the influence of Magnetic Field using Legendre Wavelet Collocation Method
(University of Tehran, 2018-12-01)The development and production of high performance equipment necessitate the use of passive cooling technology. In this paper, heat transfer study of convective-radiative straight fin with temperature-dependent thermal ...
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Nonlinear stability of rotating two superposed magnetized fluids with the technique of the homotopy perturbation
(University of Tehran, 2018-12-01)In the present work, the Rayleigh-Taylor instability of two rotating superposed magnetized fluids within the presence of a vertical or a horizontal magnetic flux has been investigated. The nonlinear theory is applied, by ...
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The effect of boundary conditions on the accuracy and stability of the numerical solution of fluid flows by Lattice-Boltzmann method
(University of Tehran, 2018-12-01)The aim of this study is to investigate the effect of boundary conditions on the accuracy and stability of the numerical solution of fluid flows in the context of single relaxation time Lattice Boltzmann method (SRT-LBM). ...
