نتایج جستجو برای: مدل shell

تعداد نتایج: 172143  

In this paper, the buckling behavior of a composite lattice cylindrical shell is studied and effects of rib defects on the distribution of stress field and buckling response of the shell is investigated. A three dimensional finite element buckling analysis of the lattice shell is carried out using ANSYS suit of program. Geometrical data and material properties of the shell are obtained from the...

2006
Gerrit C. Groenenboom Stuart C. Althorpe Graham A. Worth

صمد خاکشورنیا, ,

  Barrabès-Israel null shell formalism is used to study the gravitational collapse of a thin cylindrical null shell in vacuum. In general the lightlike matter shell whose history coincides with a null hypersurface is characterized by a surface energy density. In addition, a gravitational impulsive wave is present on this null hypersurface whose generators admit both the shear and expansion. In ...

In this paper the thermal behavior of the shell-side flow of a shell-and-tufe heat exchanger has been studied using theoretical and experimental methods. The experimental method Provided the effect of the major parameters of the shell-side flow on thermal energy exchange. In the numerical method, besides the effect of the major paramerers, the effect of different geometric parameters and Re on ...

In the architecture of the mosque, the light entering into the dome is a functional necessity and due to the structure, the weight of the dome and its one or more shells has caused limitations in any kind of skylights to be encumbered. The research main question is that due to the mechanism of the dome parts, how the creation and the entering of skylights to the dome were done. The research met...

Journal: :روانپزشکی و روانشناسی بالینی ایران 0
جعفر عسگری jafar asgari shaheed sadooghi university of medical sciences, ahmad abad, yazd, i. r.یزد. احمد آباد. دانشکده پزشکی. محمد تقی براهنی mohamad taghi barahani . خیابان طالقانی. کوچه جهان. پلاک 1 . انستیتو روانپزشکی تهران حسن فرشبندی hasan farashbandi . شیراز. بلوار ابیوردی. بیمارستان حافظ. عبدالحمید شریعت abdolhamid shriat . شیراز. بلوار چمران. بیمارستان چمران.

the purpose of this study was to examine the likelihood of brain damage in shell shock injured patients by comparing their cognitive functioning with three groups of injured patients, prisoner of was with ptsd, and normal individuals.all groups were administrered wchsler memory scale, benton visual etention, dailler cancellation, smith digit symbol and wisconsin card sorting tests. the findings...

In this paper, an exact analytical solution for free vibration of rotating bi-layered cylindrical shell composed of two independent functionally graded layers was presented. The thicknesses of the shell layers were assumed to be equal and constant. The material properties of the constituents of bi-layered FGM cylindrical shell were graded in the thickness direction of the layers of the shell ac...

ژورنال: علوم آب و خاک 2008
سمیع, عبدالحسین , مشگلی, علی , پوررضا, جواد ,

This experiment was conducted to determine the phosphorus relative bioavailability of eight samples of dicalcium phosphate. Bioavailability of Samples of dicalcium phosphate was evaluated and their effects on performance of laying hens were investigated. Commercial samples of Dicalcium Phosphate were provided from the following manufacturers: Iran Phosphate, Partove Bashash, Godaze, Poya Khojas...

سمیع, عبدالحسین , مشگلی, علی , پوررضا, جواد ,

This experiment was conducted to determine the phosphorus relative bioavailability of eight samples of dicalcium phosphate. Bioavailability of Samples of dicalcium phosphate was evaluated and their effects on performance of laying hens were investigated. Commercial samples of Dicalcium Phosphate were provided from the following manufacturers: Iran Phosphate, Partove Bashash, Godaze, Poya Khojas...

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