نتایج جستجو برای: advanced yield criterion

تعداد نتایج: 514456  

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2015
Jon Alm Eriksen Renaud Toussaint Knut Jørgen Måløy Eirik Flekkøy Bjørnar Sandnes

Experiments on confined two-phase flow systems, involving air and a dense suspension, have revealed a diverse set of flow morphologies. As the air displaces the suspension, the beads that make up the suspension can accumulate along the interface. The dynamics can generate "frictional fingers" of air coated by densely packed grains. We present here a simplified model for the dynamics together wi...

Journal: :Acta Materialia 2022

Plasticity of body-centered cubic (bcc) metals is atypical at low temperatures, caused by the important lattice friction 1/2〈111〉 screw dislocations. In this paper, we present a yield criterion that can be used to predict stress and active slip systems in all bcc transition for any applied stress. The fully parametrized on ab initio calculations dislocation glide properties, case uniaxial loadi...

Journal: :European Journal of Mechanics A-solids 2021

The mechanical response of isotropic elastoplastic materials containing random distributions initially spherical voids is investigated computationally based on Fast Fourier Transform simulations. Numerical limit-analysis simulations at constant stress triaxiality allow to determine the yield surfaces, leading in particular determination a Representative Volume Element size for onset coalescence...

Journal: :Proceedings of the National Academy of Sciences 2009

Journal: :Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia 2010
Bernardo Henrique Ferraz Maranhão Cyro Teixeira da Silva Junior Antonio Monteiro da Silva Chibante Gilberto Perez Cardoso

OBJECTIVE To propose a new classification criterion for the differentiation between pleural exudates and transudates-quantifying total proteins in pleural fluid (TP-PF) and lactate dehydrogenase in pleural fluid (LDH-PF) exclusively-as well as to compare this new criterion with the classical criterion in terms of diagnostic yield. METHODS This was an observational, cross-sectional study with ...

1997
Yoga Sivagurunathan Mark Harman Sebastian Danicic

Program slicing consists of deleting statements from a pro gram creating a reduced program a slice that preserves the original program s behaviour for a given set of variables at a chosen point in the program However some aspects of a program s semantics are not captured by a set of variables rendering slicing inapplica ble to their analysis These aspects of the program s state shall collective...

2009
Mohamed Tellache Martine Pithioux Patrick Chabrand Christian Hochard M. Tellache P. Chabrand C. Hochard

Osteoporosis is a bone disease related to age, it weakens bone structure by deterioration of the trabecular architecture and decreases the cortical envelop width and increases its porosity. Hip fractures are the more recurrent consequences of osteoporosis, and are the cause of morbidity and increase the rate of mortality. The fracture risk due to osteoporosis, is undertaken with Dual-Energy X-r...

Journal: :Dicle Üniversitesi Fen Bilimleri Enstitüsü dergisi 2022

Islah çalışmalarında belirlenen amaca uygun genotiplerin seçimi, çalışmanın sağlıklı bir şekilde yürütülmesi için önem arz etmektedir. Bu noktada oluşturulan popülasyonun karakterize edilmesi elzemdir. Çalışmada bazı ileri ekmeklik buğday hatlarının tarla koşullarında morfolojik özellikleri incelenmiştir. Araştırmada 18 adet hattı ve iki kontrol çeşidi, tesadüf blokları deneme desenine göre 3 t...

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