Calculation of T – Stress on 3D Specimens with Crack
نویسندگان
چکیده
منابع مشابه
تاثیر برنامه خودمدیریتی بر افسردگی، اضطراب و استرس بیماران سکته قلبی the effect of self management program on depression anxiety and stress of patients with myocardial infraction
چکیده : هدف :.این پژوهش با هدف تعیین تاثیر برنامه خودمدیریتی بر افسردگی، اضطراب و استرس بیماران سکته قلبی ا نجام شد. روش مطالعه : این پژوهش یک مطالعه تجربی دو گروهه ، قبل و بعد است که در سال 1389 در بیمارستان امام رضا (ع) کرمانشاه بر روی 60 مددجوی مبتلا به بیماری سکته قلبی ا نجام شد . نمونه ها به روش در دسترس جمع آوری و به روش بلوکهای تصادفی در دو گروه شاهد و آزمون تخصیص داده شدند . به مدت یک...
15 صفحه اولEffect of Compressive Residual Stress on the Corner Crack Growth
In the present study, plasticity induced crack closure (PICC) concept and three dimensional (3D) finite element methods (FEM) are used to study the effect of compressive residual stress field on the fatigue crack growth from a hole. To investigate the effect of compressive residual stress on crack opening levels and crack shape evolution, Carlson’s experiments were simulated. Crack shape evolut...
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Based on the analytical solution of Crouch to the problem of a constant discontinuity in displacement over a finite line segment in an infinite elastic solid, in the present paper, the crack-tip displacement discontinuity elements, which can be classified as the left and the right crack-tip elements, are presented to model the singularity of stress near a crack tip. Furthermore, the crack-tip e...
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We calculate the effect of the nonsingular stress acting parallel to a crack (the “Tstress”) on edge dislocation nucleation at a crack loaded in Mode I. We find that this leads to crack size effect – that is, for small cracks (of order 100 atomic spacings or less), the T stress causes the critical load for dislocation nucleation (expressed in terms of the applied stress intensity factor) to dev...
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BACKGROUND Left atrial volume (LAV) estimation with 3D echocardiography has been shown to be more accurate than 2D volume calculation. However, little is known about the possible effect of respiratory movements on the accuracy of the measurement. METHODS 100 consecutive patients admitted with chest pain were examined with 3D echocardiography and LAV was quantified during inspiratory breath ho...
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ژورنال
عنوان ژورنال: Procedia Engineering
سال: 2012
ISSN: 1877-7058
DOI: 10.1016/j.proeng.2012.09.543