نتایج جستجو برای: even if frictional damping is taking into accountthe mathematical tractability

تعداد نتایج: 7911590  

2001
Jonghoon Park Kensuke Harada Makoto Kaneko

The problem due to the statically indeterminate contact forces arising in indeterminate frictional enveloping grasps is addressed in the paper. First of all, we show that the statical model for the contact forces is incomplete in the sense that the mathematical frictional forces may have an infeasible component. To resolve this infeasibility, we directly derive the enveloping grasp infeasibilit...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1390

the purpose of the present study was to see which one of the two instruction-processing instruction (pi) and meaningful output based instruction (mobi) accompanied with prompt and recast- is more effective on efl learners’ writing accuracy. in order to homogenize the participants in term of language proficiency a preliminary english test (pet) was administrated between 74 intermediate students ...

2012
ADAM SOBEL ERIC MALONEY

The authors discuss modifications to a simple linearmodel of intraseasonal moisturemodes.Wind–evaporation feedbacks were shown in an earlier study to induce westward propagation in an eastward mean low-level flow in this model. Here additional processes, which provide effective sources of moist static energy to the disturbances and which also depend on the low-level wind, are considered. Severa...

Journal: :علوم و تکنولوژی پلیمر 0
مجید حقگو ناصر محمدی مهدی احمدی فرهاد فقیهی معصومه پازوکی

utilizing polymeric materials for damping mechanical waves is of great importance in various fields of applications such as military camouflage, prevention of structural vibrational energy transfer, and noise attenuation. this ability originates from segmental dynamics of chain-like polymer molecules. damping properties of styrene-butadiene rubbercontaining 10 wt% of monosize polystyrene partic...

Journal: :computational methods in civil engineering 2010
s. pourzeynali t.k. dattab

a reliability analysis of suspension bridges against buffeting failure due to gustiness of wind velocity is carried out using the concept of pra (probabilistic risk analysis) procedure. for this purpose, the bending stresses at the critical nodes of the bridge deck are obtained for buffeting forces using a spectral analysis technique and a finite element approach. for the purpose of reliability...

Journal: :مطالعات زبان و ترجمه 0
ابراهیم سلیمی کوچی سوسن اشرفی سمانه شفیعی

it is evident for everyone that translation is of importance in communication. the reason is due to the fact that translation is considered both as a building bridge and a common bond among various cultures and people around the world. many researchers and theorists in the translation field consider style in the literary translation as a significant subject. the present study tries to evaluate ...

2006
R. S. Schneider L. F. Ziebell

A kinetic formulation developed to analyze wave propagation in dusty plasmas, which takes into account the variation of the charge of the dust particles due to inelastic collisions with electrons and ions, is utilized to study the propagation and damping of electrostatic waves with wave number exactly parallel to the external magnetic field and Maxwellian distributions for the electrons and ion...

Journal: :Engineering Structures 2021

An innovative dissipative system for the seismic upgrade of historical buildings is presented. The comprises a friction-based device able to provide energy dissipation capacity connecting walls. To verify compliance device’s initial prototype with relevant European Standards, testing and design methodology developed. This optimisation approach consists of: two tests loops, identity dependence o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

cultural iran is a scope that is more extended than the political territories of iran as a political unit. this concept means that cultural geography(mehdi moghanlo-1383-1) of iran is greater than its political geography which, according to history, has a long history extending west-east from kandahar to the euphrates and north-south from the persian gulf to the caucasus including transoxiana a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1372

a simple, sensitive and selective method for solvent extraction and spectrophotemetric determination of lanthanum (ii) europium (iii), and cerium (iii) is described , the rare earth metals are extracted into chloroform solution of n-phenylbenzohydroxamic acid (pbha) at ph 9-10 various parameters are studied to optimize the extraction conditions. the molar absorptivity is found to increase from ...

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