نتایج جستجو برای: composite plate

تعداد نتایج: 193230  

Journal: :journal of mechanical research and application 2012
r. akbari alashti r. alibakhshi

the effect of a distributed patch mass on the natural frequency of vibration of a laminated rectangular plate with simply supported boundaries is investigated. the third order displacement field of a composite laminated rectangular plate is defined using the two variable refined plate theory. equations of motion of the plate are obtained with the help of calculus of variation. parametric study ...

Journal: :journal of structural engineering and geo-techniques 2015
leila shahryari mahdi esfandiari

the steel shear wall and composite steel plate shear wall is introduced in recent three decade and is considered and is spread rapidly. composite steel plate shear wall which is made of a layer of thin steel sheet with coating of reinforced concrete in one or both sides of steel palate is considered a third generation of resistance shear walls against lateral loads that in addition to increasin...

Journal: :journal of solid mechanics 0
a ehsani department of mechanical engineering, ferdowsi university of mashhad, mashhad, iran j rezaeepazhand department of mechanical engineering, faculty of engineering, ferdowsi university of mashhad, mashhad,iran.

the present paper investigates the advantages of a new class of composite grid structures over conventional grids. thus far, a known grid structure such as orthogrid or isogrid has been used as an orthotropic layer with at most in-plane anisotropy. the present laminated grid is composed of various numbers of thin composite grid layers. the stiffness of the structure can be adjusted by choosing ...

Journal: :international journal of advanced design and manufacturing technology 0
mohamad alipour mahmoud mehrdad shokrieh

in design and optimization process of laminated composite structures, the number of layers, layer angles, stacking sequence, material types and etc should be specified. each of aforesaid parameters can be applied as a design variable. in this paper the target is to minimize the weight of laminated composite pin loaded structures. the laminated composite structures are designed based on the load...

Journal: :international journal of nano dimension 0
m. h. shojaeefard school of automotive engineering, iran university of science and technology, tehran, iran a. khalkhali school of automotive engineering, iran university of science and technology, tehran, iran s.h. khakshournia school of automotive engineering, iran university of science and technology, tehran, iran f. malmir school of automotive engineering, iran university of science and technology, tehran, iran

this paper investigates the effect of different methods of carbon nanotubes distribution in a thin matrix on static and dynamic behavior of the nanocomposite. five different symmetric patterns of distribution are considered, including four parabolic patterns and a linear one. for each pattern, the effective mechanical properties of the resultant nanocomposite are calculated using the rule of mi...

In the present study, small scale effect on critical buckling loads of triangular nano- composite plates under uniform in-plane compression is studied. Since at nano-scale the structure of the plate is discrete, the size dependent nonlocal elasticity theory is employed to develop an equivalent continuum plate model for this nanostructure incorporating the changes in its mechanical behavior. The...

Journal: :international journal of advanced design and manufacturing technology 0
mohammadmahdi amiri phd student center of excellence in precision dimensional measurement technology development institute (tdi), acecr, sharif university branch. tehran, iran. m. tabatabaee ghomi assistant professor center of excellence in precision dimensional measurement technology development institute (tdi), acecr, sharif university branch. tehran, iran. *corresponding author gh. liaghat full professor mechanical engineering department tarbiat modares university tehran, iran.

in this paper a new method for nondestructive testing or nondestructive evaluation is proposed for glass-epoxy composite. for this purpose, impact-echo is used to evaluate the properties of composite materials, detecting internal defects and thickness measurement. in the impact-echo method a steel ball impacts on a composite plate and generates stress waves or p-waves which will be transferred ...

Leila Shahryari Mahdi Esfandiari

The steel shear wall and composite steel plate shear wall is introduced in recent three decade and is considered and is spread rapidly. Composite steel plate shear wall which is made of a layer of thin steel sheet with coating of reinforced concrete in one or both sides of steel palate is considered a third generation of resistance shear walls against lateral loads that in addition to increasin...

2014
J. H. Zhang W. Zhang

We investigate the global bifurcations and multipulse chaotic dynamics of a simply supported laminated composite piezoelectric rectangular thin plate under combined parametric and transverse excitations. We analyze directly the nonautonomous governing equations of motion for the laminated composite piezoelectric rectangular thin plate. The results obtained here indicate that the multipulse chao...

2015
S. Lecheb A. Chellil H. Mechakra A. Zeggane H. Kebir

In this work, repaired crack in 6061T6 aluminum plate with composite patches presented, firstly we determine the displacement, strain and stress, also the first six mode shape of the plate, secondly we took the same model adding central crack initiation, which is located in the center of the plate, its seize vary from 20 mm to 60 mm and we compare the first results with second. Thirdly we repai...

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