نتایج جستجو برای: hsdt plate

تعداد نتایج: 73503  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 0

هدف از انجام این پژوهش مطالعه اثر ضد دردی مورفین و آمی تریپتین بر روی درد نوروپاتی حاصل از گره زدن عصب سیاتیک می باشد. جهت انجام این تحقیق با استفاده از نخ جراحی chromic gutبه شماره 4.0 چهار گره به فواصل 1میلی متری از یکدیگر بر روی عصب سیاتیک پای چپ حیوان زده شد. و پس از آن آستانه درد حرارتی در روزهای چهارم و هشتم، دوازدهم، شانزدهم، و بیستم بوسیله hot plate مورد اندازه گیری قرار گرفت .جهت بررسی...

Journal: :journal of applied and computational mechanics 2014
ali mohammad moniri bidgoli ali reza daneshmehr reza kolahchi

this study presents exact bending solution of fully clamped orthotropic rectangular plates subjected to arbitrary loads resting on elastic foundations, based on the finite integral transform method. in this method, it is not necessary to determine the deformation function because the basic governing equations of the classical plate theory for orthotropic plates have been used. a detailed parame...

Journal: :civil engineering infrastructures journal 0
amin ghannadiasl faculty of engineering, university of mohaghegh ardabili asadollah noorzad school of civil engineering, the university of tehran

this paper presents the bending analysis of annular plates by the indirect trefftz boundary approach. the formulation for thin and thick plates is based on the kirchhoff plate theory and the reissner plate theory. the governing equations are therefore a fourth-order boundary value problem and a sixth-order boundary value problem, respectively. the trefftz method employs the complete set of solu...

Journal: :international journal of advanced design and manufacturing technology 0
farzad ebrahimi abbas rastgoo

in this paper, a nonlinear free vibration analysis of thin annular functionally graded (fg) plate integrated with two uniformly distributed actuator layers made of piezoelectric (pzt4) material on the top and bottom surfaces of the annular fg plate is presented based on kirchhoff plate theory. the material properties of the fgm core plate are assumed to be graded in the thickness direction acco...

Journal: :computational methods in civil engineering 2012
m.m. alinia a. dibaie

geometric and material nonlinear behavior of slender webs in i-column girders having stocky flanges under the action of combined lateral and axial loads is investigated. interaction curves corresponding to the application of compressive and shear loads at buckling and ultimate stages for both web plates and column sections are plotted. in addition, the effects of flange and web slenderness rati...

Journal: :SN applied sciences 2021

Abstract Buckling and vibration study of the shape memory polymer composites (SMPC) across glass transition temperature under heterogeneous loading conditions are presented. Finite element analysis based on C° continuity equation through higher order shear deformation theory (HSDT) is employed considering non linear Von Karman approach to estimate critical buckling for span from 273 373 K. Exte...

Journal: :international journal of advanced design and manufacturing technology 0
ali akbar lotfi neyestanak ali lotfi

this paper has focused on vibration and buckling of thin rectangular plates when at least two opposite sides are simply supported condition and subjected to axial and biaxial initially stresses. analysis is based on exact solution method, without further usage of any approximate method. first analytic techniques are used to discuss the free vibrations of plate. then, natural frequencies and cri...

H Gharooni, M Ghannad

Using the infinitesimal theory of elasticity and analytical formulation, displacements and stresses based on the high-order shear deformation theory (HSDT) is presented for axisymmetric thick-walled cylinders made of functionally graded materials under internal and/or external uniform pressure. The material is assumed to be isotropic heterogeneous with constant Poisson’s ratio and radially varyi...

Hydro-induction sediment discharge technique (HSDT) aims to prevent reservoir sedimentation by withdrawing the discharge water from the reservoir bottom to suck up and discharge sediments, and by inducing vertical vortexes and undercurrents in the reservoir bay to keep sediments agitated and moving. The technique is facilitated with an innovative discharge conduit system having bottom intakes t...

Journal: :iranian biomedical journal 0
محمدرضا نیک روش mohammad reza nikravesh مهدی جلالی mehdi jalali علی رضا فاضل ali reza fazel

during early neurogenesis, the floor plate plays an essential role(s) in the differentiation of the ventral portion of neural tube. in this study, we detected the specific distribution of unique glycoconjugate during the floor plate differentiation. formalin fixed paraffin sections of balb/c mice (10-14 embryonic days) were processed for histochemical studies using horseradish peroxidase-labell...

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