نتایج جستجو برای: limit analysis

تعداد نتایج: 2969955  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

a novel silver (ag) nanocomposite electrode was proposed that fabricated from metal nanostructures and ionic liquids. the combined application of unique properties of nanomaterials and ionic liquids in the design of this ag nanocomposite results in electrodes with interesting advantages compared to the conventional metal disk electrode. in the first part of this thesis, the elecrocatalytic eff...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1370

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
m. veiskarami j. kumar f. valikhah

following the recent work of the authors in development and numerical verification of a new kinematic approach of the limit analysis for surface footings on non-associative materials, a practical procedure is proposed to utilize the theory. it is known that both the peak friction angle and dilation angle depend on the sand density as well as the stress level, which was not the concern of the fo...

Journal: :civil engineering infrastructures journal 0
javad mofidi rouchi m.sc student, school of civil engineering, university college of engineering, university of tehran, tehran, iran. orang farzaneh assistant professor, school of civil engineering, university college of engineering, university of tehran, tehran, iran. faradjollah askari assistant professor, international institute of earthquake engineering and seismology, tehran, iran.

stability of foundations near slopes is one of the important and complicated problems in geotechnical engineering, which has been investigated by various methods such as limit equilibrium, limit analysis, slip-line, finite element and discrete element. the complexity of this problem is resulted from the combination of two probable failures: foundation failure and overall slope failure. the curr...

2016
L. A Souza F. F. Bellotti T. Frederico M. T. Yamashita

L. A Souza, F. F. Bellotti, T. Frederico, M. T. Yamashita, and L. Tomio Instituto Tecnológico de Aeronáutica, DCTA, 12228-900, São José dos Campos, Brazil Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark Instituto de Fomento e Coordenação Industrial, 12228-901, São José dos Campos, SP, Brazil Instituto de F́ısica Teórica, UNESP Univ Estadual Paulista, C.P. 70532-...

Journal: :international journal of civil engineering 0
o. farzaneh school of civil engineering, faculty of engineering, university of tehran, shanzdah azar avenue, enghelab street, p.o. box: 14155-6457, tehran, iran, f. askari no 21,iiees, west arghavan st, north dibaji st, farmanieh, p.o.box: 3913/19395, tehran, iran, j. fatemi school of civil engineering, faculty of engineering, university of tehran, shanzdah azar avenue, enghelab street, p.o. box: 14155-6457, tehran, iran,

presented is a method of two-dimensional analysis of the active earth pressure due to simultaneous effect of both soil weight and surcharge of strip foundation. the study’s aim is to provide a rigorous solution to the problem in the framework of upper-bound theorem of limit analysis method in order to produce some design charts for calculating the lateral active earth pressure of backfill when ...

2003
Hoon Huh

 This paper is concerned with numerical simulation of plastic modes of tubular structures. The simulation incorporates with finite element limit analysis based on the upper bound method and the minimization technique. The analysis considers sequential deformation of structures with work-hardening effects. The simulation results demonstrate plastic buckling is one of the collapse modes and occu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده علوم 1391

nanotechnology is a general term which is related with field of all advanced science term that generally predicates with all modern technologies which consider nanoscales. improvement in the quality of products by adding some nanoparticles and study of their behavior in the presence of these nanoparticles have been obtained in many researches. on the other hand numerous demands for sowing ...

1999
Hiroyasu Yamada Toshiyuki Nakagaki

Dispersion curves to a oscillatory reaction-diffusion system with the selfconsistent flow have obtained by means of numerical calculations. The flow modulates the shape of dispersion curves and characteristics of traveling waves. The point of inflection which separates the dispersion curves into two branches corresponding to trigger and phase waves, moves according to the value of the advection...

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