نتایج جستجو برای: dimensional parameters
تعداد نتایج: 949891 فیلتر نتایج به سال:
در این پایان نامه سعی شده است برنامه ای جهت تحلیل سازه های دوبعدی تحت تاثیر بارگذاریهای مختلف ارائه گردد که قابل اجرا بر روی windows های 95 و 98 و یا بالاتر خواهد بود. در این برنامه که به نام aprodis، بر گرفته از حروف اول کلمات analysis program for two dimensional structure نامگذاری شده است ، امکانات متنوعی جهت استفاده کاربر تعبیه شده است . از جمله این موارد می توان به قابلیت ارائه شش نوع بارگذ...
there are many parameters that affect the sheet hydroforming process such as fluid pressure, material properties, interfacial friction between blank and tool surfaces, etc. in this paper, a fem-based taguchi method is used to determine the effects of forming parameters on the quality of part formability in the process of hydrodynamic deep drawing assisted by radial pressure. four important form...
in this research, the surface stress effect on the nonlocal vibration of piezoelectric square plate reinforced by single walled carbon nanotubes (swcnts) based on classical plate theory (cpt) and first order shear deformation theory (fsdt) is presented. the elastic properties of piezoelectric nanocomposite plate are estimated by eshelby-mori-tanaka and the extended mixture rule approaches. the ...
the present work is focused on the performance analysis of a 1.7 liter engine with turbocharger. the ultimate target is studying the response of the turbocharger to the inlet pulsating flow. such numerical analysis requires the time variation of pressure and velocity at turbine inlet. in order to achieve such information, one dimensional unsteady viscous compressible flow within a 1.7 liter tur...
M. Baity-Jesi,1,2,3 R. A. Baños,3,4 A. Cruz,3,4 L. A. Fernandez,1,3 J. M. Gil-Narvion,3 A. Gordillo-Guerrero,3,5 D. Iñiguez,3,6 A. Maiorano,2,3 F. Mantovani,7 E. Marinari,8 V. Martin-Mayor,1,3 J. Monforte-Garcia,3,4 A. Muñoz Sudupe,1 D. Navarro,9 G. Parisi,8 S. Perez-Gaviro,3,6 M. Pivanti,7 F. Ricci-Tersenghi,8 J. J. Ruiz-Lorenzo,3,10 S. F. Schifano,11 B. Seoane,2,3 A. Tarancon,3,4 R. Tripiccio...
From a rational convex polytope of dimension r ≥ 2 J.P. Hansen constructed an error correcting code of length n = (q−1)r over the finite field Fq. A rational convex polytope is the same datum as a normal toric variety and a Cartier divisor. The code is obtained evaluating rational functions of the toric variety defined by the polytope at the algebraic torus, and it is an evaluation code in the ...
If there are many independent, identically distributed observations governed by a smooth, finite-dimensional statistical model, the Bayes estimate and the maximum likelihood estimate will be close. Furthermore, the posterior distribution of the parameter vector around the posterior mean will be close to the distribution of the maximum likelihood estimate around truth. Thus, Bayesian confidence ...
There are valuable investigations on the amplification effects of the topography on the seismic response in the frequency domain; however, a question is that how one can estimate the amplification of time domain peak ground acceleration (PGA), peak ground velocity (PGV), and peak ground displacement (PGD) over the topographic structures. In this study, the numerical approach has been used for t...
This paper presents the preliminary results of an extensive parametric study on seismic response of two-dimensional semi-sine shaped hills to vertically propagating incident P- and SV-waves. Clear perspectives of the induced diffraction and amplification patterns are given by investigation of time-domain and frequency-domain responses. It is shown that site geometry, wave characteristics , and ...
this paper deals with aerodynamic design of fan and compressor assembly for turbofan engines having arbitrary by-pass ratios. two different softwares were developed in this respect. first, based on general performance data at design point condition, a one-dimensional approach was activated. initial flow passages of both fan and compressor, together with splitter position were developed utilizin...
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