نتایج جستجو برای: Slab method

تعداد نتایج: 1638307  

Journal: :international journal of advanced design and manufacturing technology 0
vali alimirzaloo assistant proffesor of urmia university

sandwich sheet rolling process is investigated using an analytical method (slab method) and a numerical method (finite element method). the horizontal stress distribution in the layers, the rolling pressure along the contact interface and the neutral point between the roll and the sheet are investigated. then the affects of the parameters such as the friction between the sheet and the roll, she...

Journal: :journal of modern processes in manufacturing and production 0
mohammad heydari vini department of mechanical engineering, mobarakeh branch, islamic azad university, mobarakeh, isfahan, iran pedram farhadipour school of mechanical engineering, iran university of science and technology, tehran 16844, iran

the accumulative roll bonding (arb) as a severe plastic deformation (spd) procedure aimed at enhancing the mechanical properties of metals and alloys. in the present study, a new slab method is proposed for estimating the forming stress field for cold extrusion of metals cross the alumina interlayer powder particles by accumulative roll bonding process. plastic deformation behavior of the metal...

Journal: :iranian journal of science and technology transactions of mechanical engineering 2015
m. afrasiab h. afrasiab m.r. movahhedy g. faraji

in this paper, based on the slab method of analysis, a novel and general approach isdeveloped for studying the radial forging process with curved profile dies. the presented approachis not only more general with respect to previous studies, but it is also easier to understand and useand can be efficiently used for optimization of the die profile depending on the forging geometryand conditions. ...

In present study, a mathematical model of the vehicle–floating slab track (FST) interaction is established to investigate the coupled behaviour of vehicle–track system. The FST is modelled as the double Euler -Bernoulli beam including the rail and slab. The railway vehicle is simplified as a multi-rigid-body model. The wheel–rail interface is treated using a nonlinear Hertzian contact model, co...

At present, reducing subgrade settlement of soft soil foundation is a key problem in high-speed railway construction. Pile-slab structure is a widely-utilized form of foundation structure to reduce the subgrade settlement in China. In order to save the engineering cost for high-speed railway construction in developing countries, the author developed a pile-slab structure and named it as the new...

and I. Salehi, M. R. Forouzan,

In this paper, properties of slab deformation in sizing press mill as one of the slab reduction processes in hot rolling mills have been evaluated using the elastoviscoplastic finite element method with explicit formulation. Effect of prarameters such as initial slab width and thickness, reduction, feed pitch, and anvil speed on factors such as dogbone formation, head and tail fishtail profile,...

2017
R. Borghol T. Aguili

In this paper, we investigate theoretically the waves propagation in a lossless double-negative grounded slab (DNG). This study is performed by the Transverse Resonance Method (TRM). The proper or improper nature of real and complex modes is observed. They are highly dependent on metamaterial parameters, i.e. ɛrnegative, μr-negative, or both. Numerical results provided that only the proper comp...

Journal: :journal of physical & theoretical chemistry 2010
f. khazali m. gholami k. zare

plane-wave pseudopotential density functional theory (oft) periodic slab calculations were performed usingthe giteralized gradient approximation (gha) to investigate the adsorption of nitric oxide(no) on the (i ii)surface of cu. copper rface was stimulated using th p 'odic slab method consisting of five atomic layers.four different adsorption saes (atop. bridge, rcp hollow, and fcc hollow) were...

Journal: :international journal of iron & steel society of iran 2007
a. saboonchi a. h. meghdadi

obtaining temperature distribution data of slabs under rolling is essential as the mechanical and metallurgical properties of the metal under this process vary with temperature. using the control volume method, a mathematical model is employed in this study to predict slab temperature in the hot roll process at mobarakeh steel company. the effects of different parameters including the heat resu...

This study presents the results of an experimental program to investigate the effectiveness of an innovative combined FRP technique using combination of externally bonded (EB) FRP fabrics and near surface mounted (NSM) FRP rods for flexural strengthening of existing reinforced concrete (RC) two-wayslabs with low clear cover thickness. Three full-scale RC slabs (1500×1500×120 mm) were tested und...

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