نتایج جستجو برای: a shear

تعداد نتایج: 13454218  

A. Shirvani and M. Farzin,

In this paper, shear localization due to strain softening in sidepressed cylinders, is inverstigated. Shear localization causes formation of macroscopic shear bands which can be obsserved in the metallographic cross-section. In this paper, for the first time a method is presented in which a simple two-slice model is used to study the formation of shear bands. The results obtained form this mode...

Journal: :international journal of civil engineering 0
a. hassanipour no. 26, west arghavan ave., north dibaji str., farmanieh , tehran, iran a. shafiee no. 26, west arghavan ave., north dibaji str., farmanieh , tehran, iran m.k. jafari no. 26, west arghavan ave., north dibaji str., farmanieh , tehran, iran

shear modulus and damping ratio are important input parameters in dynamic analysis. a series of resonant column tests was carried out on pure clays and sand-clay mixtures prepared at different densities to investigate the effects of aggregate content, confining stress, void ratio and clay plasticity on the maximum shear modulus and minimum damping ratio. test results revealed an increase in the...

Leila Shahryari Mahdi Esfandiari

The steel shear wall and composite steel plate shear wall is introduced in recent three decade and is considered and is spread rapidly. Composite steel plate shear wall which is made of a layer of thin steel sheet with coating of reinforced concrete in one or both sides of steel palate is considered a third generation of resistance shear walls against lateral loads that in addition to increasin...

Bending analyses of isotropic, functionally graded, laminated composite, and sandwich beams are carried out using a quasi-3D polynomial shear and normal deformation theory. The most important feature of the proposed theory is that it considers the effects of transverse shear and transverse normal deformations. It accounts for parabolic variations in the strain/stress produced by transverse shea...

Journal: :international journal of civil engineering 0
s.m. mir mohammad hosseini amirkabir university of technology a.a. hajimohammadi amirkabir university of technology a. r. hajimohammadi university of tabriz

seismic piezocone device (scptu) together with resonant column and cyclic triaxial test apparatus are employed to measure small strain shear modulus (g0) of carbonate sandy and clayey soils of southern coasts of iran. a large area of southern regions of iran is formed from clay, silt and sand. in this study, maximum shear modulus that is derived from both field (by seismic piezocone) and labora...

2016
A. Trautwein Y. Alpert Y. Maeda H. Marcolin A. TRAUTWEIN H. E. MARCOLIN

— Iron 57-enriched, deoxygenated human (adult) hemoglobin (HbA), its isolated asHand /?sn-chains, and the partially iron 57-enriched, fully functional hemoglobin a2(Fe) j82(Fe) were investigated by Mossbauer spectroscopy in the temperature range 4.2 K-200 K. According to our experimental accuracy ( ± 0.006 mm s) the temperature dependent quadrupole splittings &EQ(T) of deoxygenated HbA, <XSHand...

Journal: :Biotechnology progress 2000
U Beyer R Ehwald

A viscometer suitable for rapid measurements in small volumes of highly viscous liquids is described. Using this device the viscometric affinity assay for glucose was studied under variable conditions in order to obtain basic information for the design of a viscometric glucose sensor. The viscosity of the dextran/Concanavalin A (ConA) solution is sensitive to glucose in a broad range of the she...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه پلیمر و پتروشیمی ایران - پژوهشکده پتروشیمی 1390

هدف اصلی این پروژه شبیه سازی رفتار جریان سیالات shear thinning در محیط متخلخل با نفوذپذیری بالا توسط روش المان محدود می باشد. با توجه به میزان تخلخل محیط و عدد رینولدز، مدل های مختلفی برای جریان در محیط متخلخل ارائه شده اند. در شرایطی که سرعت جریان به اندازه کافی پایین باشد و بتوان از اثر اینرسی صرف نظر کرد، معادله brinkman میتواند به خوبی برای پیش بینی رفتار جریان در محیط متخلخل استفاده شود. د...

E. Zamani H. Shariatmadar, M. Khatamirad

In reinforced concrete design, there are situations where transfer of shear across a specific plane needs to be considered. Examples of such situation include corbels, bearing shoes, ledger beam bearing, and a host of connection between precast concrete elements. In this study, the shear transfer behavior of reinforced concrete is investigated experimentally by conducting test on 6 precracked p...

2012
C. Mandal S. Das R. N. Jana

The effects of radiation on transient natural convection of a viscous incompressible fluid confined between vertical walls have been studied. We have considered the two different cases (i) flow due to the impulsive motion and (ii) flow due to accelerated motion of one of the walls. The governing equations are solved analytically using the Laplace transform technique. The variations of velocity ...

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