نتایج جستجو برای: nonlinear dynamic response porosity

تعداد نتایج: 1550144  

2014
Mariusz Zdanowicz Juha Harra Jyrki M. Mäkelä Esa Heinonen Tingyin Ning Martti Kauranen Goëry Genty

We perform a detailed characterisation of the second-order nonlinear optical response of nanocomposites consisting of alternating layers of silver-decorated silica glass nanoparticles and pure silica glass. The samples are fabricated using aerosol techniques and electron-beam dielectric coating, resulting in a bulk-like material with symmetry-breaking induced by the porosity of the alternating ...

2005
S. M. Spottswood R. J. Allemang

Assembling nonlinear dynamic models of structures is the goal of numerous research and development organizations. Such a predictive capability is required in the development of advanced, high-performance aircraft structures. Specifically, the ability to predict the response of complex structures to aero-acoustic loading has long been a United States Air Force goal. Sonic fatigue has plagued the...

M.J. Mahmoodi, V. Mahlooji

In this paper, nonlinear static analysis of moderately thick plate made of functionally graded materials subjected to mechanical transverse loading is carried out using dynamic relaxation method. Mindlin first order shear deformation theory is employed to consider thick plate. Discretized equations are extracted for geometrically nonlinear behavior analysis.Loading Conditions and boundary condi...

Journal: :journal of the structural engineering and geotechnics 0
araliya mosleh department of civil eng., faculty of engineering, university of aveiro, 3810-193 aveiro, portugal. hamed hamidi department of civil eng., babol noshirvani university of technology, iran ahmad nicknamc department of civil eng., iran university of science&technology, p.o. box 16765-163, tehran, iran josé jara department of civil eng., faculty of engineering, universidad michoacana de san nicolas de hidalgo, morelia, mexico humberto varume construct-lese, department of civil eng., faculty of engineering, university of porto, 4200-465 porto, portugal

bridges, as an essential part of transportation system, play a special role in economy, politic and military all around the world. serviceability of bridges is of high importance especially in emergencies, helping injured people and proportioning transportation after earthquakes. earthquake regulation codes, normally suggest linear methods to conduct the analysis, and nonlinear analysis is bare...

Journal: :civil engineering infrastructures journal 0
seyed bahram beheshti-aval associate professor, civil engineering faculty, k.n. toosi university of technology, tehran, iran ehsan jahanfekr ph.d. candidate, faculty of technical and engineering, hormozgan university, bandarabas, iran

displacement coefficient method (dcm) stipulated in the asce 41-06 standard is becoming the preferred method for seismic rehabilitation of buildings in many high-seismic-hazard countries. applications of the method for non-building constructions such as bridges are beyond the scope of this standard. thus its application to this kind of structure should be approached with care. target displaceme...

2015
Dimitri M. Donskoy

a) Develop the nonlinear acoustic theory of poroelastic media using Biot’s semilinear model and physical model of contact nonlinearity, b) Measure the nonlinear parameter of sediments in laboratory tank, c) Study the effect of sediment parameters (grain size distribution, free gas content, porosity) on nonlinear acoustic properties of the sediments, d) Evaluate the nonlinear absorption and dist...

Journal: :journal of optimization in industrial engineering 2010
moharam habib nezhad korayem mehdi bamdad ashkan akbareh

planning robot trajectory is a complex task that plays a significant role in design and application of robots in task space. the problem is formulated as a trajectory optimization problem which is fundamentally a constrained nonlinear optimization problem. open-loop optimal control method is proposed as an approach for trajectory optimization of cable parallel manipulator for a given two-end-po...

In this research the stress-strain curve of porous Titanium, as a common material for biomedical application, was predicted using the mechanical properties of fully solid Titanium experimental data. Modified Gurson model (Gurson-Tvergaard-Needleman (GTN) model) was used to predict the plastic response of porous Titanium in compaction. Different values of GTN parameters were used for different i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1390

abstract venlafaxine, 1–[2–(dimethylamino)–1–(4–methoxyphenyl) ethyl]cyclohexanol hydrochloride is a novel non-tricyclic antidepressant. venlafaxine is a second generation antidepressant drug, has a neuropharmacologic profile distinct from that of existing antidepressants including tricyclic compounds, selective serotonin reuptake inhibitors and monoamine oxidase inhibitors. venlafaxine impart...

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