Journal of Mechanical Research and Application: 5 (4)

Open Access Article

1 - Evaluation of water-based Fe3O4 ferrofluid heat transfer in the presence of external electromagnetic field: A review
صبا یزدانی

Fe3O4 ferrofluid is an effective mean for heat transfer purposes in the presence of an external electromagnetic field that controls cluster volume and nanoparticles thermal conductivity coefficient. This paper investigates how changing the heating fluid to a special kin More

Fe3O4 ferrofluid is an effective mean for heat transfer purposes in the presence of an external electromagnetic field that controls cluster volume and nanoparticles thermal conductivity coefficient. This paper investigates how changing the heating fluid to a special kind of magnetic nanofluid can affect efficiency enhancement. Case studies about ferrofluid (Fe3O4) are summarized in the present work and similar results have been reviewed. Besides, ferrofluid qualification of being an appropriate locator for other conveyors is surveyed. As ferrofluids are controllable in the functional magnetic field, they provide visible effects on heat transfer properties. Strictly, the effect of porous media in different geometries and magnetic fields on ferrofluid heat transfer amount is investigated and different parameters likeNusselt and Magnetic number are evaluated. The previous studies show that ferrofluids can improve heat transfer. Hence thermal efficiency is highly dependent on magnetic field strength. Heating fluid is described as laminar Fe3O4 ferrofluid flow in constant Reynolds number and temperature information has high accuracy. Heat transfer efficiency of other magnetic fluid types like Al2O3 and CuO are briefly reviewed to convince that one of the most suitable nanofluids has been studied. Manuscript profile

Open Access Article

2 - Experimental and Numerical Studying of Earing in Deep Drawing of a Square cup Made of Al-Br Bilayer Sheet
محمدحسین محمودیان

One of the most important methods of forming sheets is the deep stretching of metal sheets. Deep tension is widely used in deforming sheet metal into hollow sheet metal. In this study, the deep tensile strength of sheets made of brass and aluminum is first simulated and More

One of the most important methods of forming sheets is the deep stretching of metal sheets. Deep tension is widely used in deforming sheet metal into hollow sheet metal. In this study, the deep tensile strength of sheets made of brass and aluminum is first simulated and investigated using practical experiments.The general structure of the dissertation is as follows: First, the records and researches that have been done inside and outside the country in the field of deep drawing of two-layer sheets so far have been introduced and the obtained results have been reviewed. in the following, practical experiments and experimental study of deep tensile strength of double-walled sheets and effective parameters in this process are discussed. To confirm the simulation results, a number of experiments are performed which are divided into twoparts: preliminary and main experiments. Also, how to do the simulation by Abacus software is explained step by step.The results of research conducted by Abacus software and practical experiments show that the way the layers are arranged in the mold affects the shrinkage of the sheets. Also, it has been found that the amount of force is inversely related to the amount of folding. Finally, suggestions are provided to continue working on this issu Manuscript profile

Open Access Article

3 - Studying the anatomy and the physiology of the respiratory system and investigating the HME filters of the ventilator device
سمیه یعقوبی حسین محمدی جوزدانی بهزاد کریم خانی

In this study, first the anatomy and physiology of the respiratory system is reviewed, then the filters of the ventilator device are investigated. In the continuation of the research, after examining the above cases, a case similar to the HME filter of the ventilator de More

In this study, first the anatomy and physiology of the respiratory system is reviewed, then the filters of the ventilator device are investigated. In the continuation of the research, after examining the above cases, a case similar to the HME filter of the ventilator device will be designed, but with some changes in appearance in SolidWorks software. Finally, the existing stress analyzes are performed on the filter and in terms of case material is examined. Then in terms of fluid flow, which is usually oxygen, and as will be seen in the new design, the oxygen speed in the device will increase and there will be less steam, as well as excess water will be released, which will be examined in this study. Eventually thermal analysis on the filter is performed and it is illustrated increasing g the temperature about the filter cannot effect on the filter’s performance because it falls rapidly. Manuscript profile

Open Access Article

4 - Improve tracking accuracy for industrial robots with the help of optical tracking system
نجات دریجانی

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Open Access Article

5 - Static, dynamic and free vibration analysis of functional graded porous plates based on first-order shear deformation theory
کامران عاصمی سعید خبری مسعود بابایی

in this study, static, dynamic and natural frequency responses of the functionally graded saturated porous plate have been investigated. Two types of distributions including symmetric nonlinear distribution of porosity and asymmetric nonlinear distribution of porosity i More

in this study, static, dynamic and natural frequency responses of the functionally graded saturated porous plate have been investigated. Two types of distributions including symmetric nonlinear distribution of porosity and asymmetric nonlinear distribution of porosity in the thickness direction of the plate have been considered. First-order shear deformation theory (FSDT) and Lagrange method are used to model the problem. Finite element and Newmark direct integration methods are used to solve the governing motion equations in time and space domains, and then the effect of different parameters such as porosity and Skempton coefficients, and two different types of porosity distribution, length to thickness ratio and boundary conditions on static and time responses, and natural frequencies of functionally graded saturated porous plate have been investigated. Results show that by increasing the Skempton coefficient will always reduce the displacement and amplitude of vibration . Also, increasing the porosity coefficient will increase the displacement Manuscript profile

Open Access Article

6 - Comprehensive overview of creep deformation of thick-walled FGM pressure vessels
مصطفی امیدی بیدگلی

Today, the use of functional graded materials in various industries has received much attention. One of the fields of application of FGM materials in the construction of thick-walled tanks. Thick-walled tanks, due to their high pressure and temperature, need to be made More

Today, the use of functional graded materials in various industries has received much attention. One of the fields of application of FGM materials in the construction of thick-walled tanks. Thick-walled tanks, due to their high pressure and temperature, need to be made of higher strength materials such as FGM materials and reinforced to increase load bearing, which is one of the best reinforcement methods using autofertilization process. It enters the plastic area from the tank under a certain load and causes residual stress after applying the process in the tank.On the other hand, the creep phenomenon eventually leads to creep rupture, which occurs either by a soft mechanism that occurs in the form of two large strains or by the brittleness of the material.The purpose of studying the creep rupture of reservoirs is to study their creep failure during their expected service life. In this article, while expressing the relevant concepts, a comprehensive review of research in this field is provided Manuscript profile

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