نتایج جستجو برای: cohesive devices

تعداد نتایج: 208161  

2008
C. Sun M. D. Thouless

To enable the effective and reliable use of structural adhesive bonding in automotive applications, the cohesive properties of a joint need to be determined over a wide range of loading rates. In this paper, a strategy for determining these properties has been described and used to analyze a set of experimental results presented in a companion paper. In the particular system studied, a crack gr...

Journal: :Computers & Geosciences 2008
Urs Neumeier Christian Ferrarin Carl L. Amos Georg Umgiesser Michael Z. Li

The one-dimensional (vertical) sediment-transport model SEDTRANS96 has been upgraded to predict more accurately both cohesive and non-cohesive sediment transport. Sedtrans05 computes the bed shear stress for a given set of flow and seabed conditions using combined wave-current bottom boundary layer theory. Sediment transport (bedload and total load) is evaluated using one of five methods. The m...

Journal: :The Journal of chemical physics 2014
Hyeondeok Shin Sinabro Kang Jahyun Koo Hoonkyung Lee Jeongnim Kim Yongkyung Kwon

We have performed quantum Monte Carlo calculations to study the cohesion energetics of carbon allotropes, including sp(3)-bonded diamond, sp(2)-bonded graphene, sp-sp(2) hybridized graphynes, and sp-bonded carbyne. The computed cohesive energies of diamond and graphene are found to be in excellent agreement with the corresponding values determined experimentally for diamond and graphite, respec...

Journal: :تحقیقات مهندسی کشاورزی 0
جمال محمد ولی سامانی دانشیار گروه سازه های آبی دانشگاه تربیت مدرس رضا فرشاد دانشجوی کارشناسی ارشد سازه های آبی دانشگاه تربیت مدرس

pure rockfill dams have been found specific attention in watershed management and flood control, recently. in addition to hydraulic specific features, one of the important advantages of these structures is their consistency with nature and environment. normally, floods are accompanied with high sediment loads which may enter the body of dam. when flow through dam body governed by hydraulic grad...

Journal: :journal of agricultural science and technology 2010
j. m. v. samani h. m. v. samani m. m. halaghi m. kouchakzadeh

cohesive sediment transport remains a complicated subject that hydraulic engineers are frequently faced with in water-related engineering problems. this is primarily affected by the macroscopic aspects of water-sediment system characteristics. in this paper a 1-d mathematical model was developed to be employed in predicting the cohesive sediment transport under simultaneous conditions of erosio...

2009
N. Hu A. M. Elmarakbi

A new cohesive model for simulating delamination propagation in composite laminates under transverse loads. Running title: A new cohesive model for simulating delamination propagation in composite laminates 2 Abstract In this paper, we propose a new cohesive model to stably and accurately simulate the delamination propagations in composite laminates under quasi-static and low-velocity impact tr...

2017
Hongwei Zhang Zhijun Wan Dan Ma Bo Zhang Peng Zhou

Injecting water into a coal seam to enhance the cohesive strength of coal and thus minimize and reduce the coal wall spalling risk must be considered in underground coal mining systems. In general, coal with low cohesive strength contains clay minerals which may affect the stability of coal by interacting with water. Therefore, the coupled effects of moisture content and inherent clay minerals ...

Journal: :CoRR 2015
Peter Hansbo Kent Salomonsson

We propose a discontinuous finite element method for small strain elasticity allowing for cohesive zone modeling. The method yields a seamless transition between the discontinuous Galerkin method and classical cohesive zone modeling. Some relevant numerical examples are presented.

Journal: :پژوهشنامه آموزش زبان فارسی به غیر فارسی زبانان 0
سیّد اکبر جلیلی عضو هیأت علمی دانشگاه بین المللی امام خمینی(ره) سیّد مهدی ابطحی عضو هیأت علمی دانشگاه بین المللی امام خمینی(ره) مهدی خدادادیان عضو هیأت علمی دانشگاه بین المللی امام خمینی(ره)

the most important and practical phase of analyzing the linguistic errors of second language learners is to find the solutions to decrease these errors. to that end, the present study examined translation strategy to decrease the number of grammatical and lexical errors of chinese language learners learning persian. twelve chinese language learners were asked to write a text in two stages. firs...

Journal: :journal of language and translation 0
adnan satariyan faculty of persian literature and foreign languages, islamic azad university, south tehran branch, tehran, iran / faculty of education, department of second language education, university of tasmania (utas), australia mohammadreza esmaeili chinijani faculty of education, department of english language teaching, islamic azad university, ahar branch, ahar, iran bronwyn reynolds faculty of education, department of early childhood education, university of tasmania (utas), australia

this study was framed on the theory of language socialisation and a systematic functional linguistic (sfl) approach. the aim of the study was to analyse the oral presentation discourse produced by an elemen- tary iranian english as second language (esl) postgraduate student in an american university four times (september/december, 2015 and march/september, 2016) over one year. the data were col...

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