نتایج جستجو برای: foundation stiffness

تعداد نتایج: 134117  

Journal: :journal of theoretical and applied vibration and acoustics 0
ali mokhtari department of mechanical engineering, isfahan university of technology, isfahan 84156-83111, iran vahid sarvestan department of mechanical engineering, isfahan university of technology, isfahan 84156-83111, iran hamid reza mirdamadi department of mechanical engineering, isfahan university of technology, isfahan 84156-83111, iran

in this article, vibration analysis of an euler-bernoulli beam resting on a pasternak-type foundation is studied. the governing equation is solved by using a spectral finite element model (sfem). the solution involves calculating wave and time responses of the beam. the fast fourier transform function is used for temporal discretization of the governing partial differential equation into a set ...

C.K Rao L.B Rao,

In this paper, transverse vibrations of thin circular plates with guided edge and resting on Winkler foundation have been studied on the basis of Classical Plate Theory. Parametric investigations on the vibration of circular plates resting on elastic foundation have been carried out with respect to various foundation stiffness parameters. Twelve vibration modes are presented. The location of th...

S Boudaa S Hamioud S Khalfallah,

This article presents an analysis of free vibration of elastically supported Timoshenko beams by using the spectral element method. The governing partial differential equation is elaborated to formulate the spectral stiffness matrix. Effectively, the non classical end boundary conditions of the beam are the primordial task to calibrate the phenomenon of the Timoshenko beam-soil foundation inter...

Journal: :مهندسی عمران فردوسی 0
آتنا فردوسی فریدون مقدس نژاد اسماعیل افلاکی

in this study, stability of geosynthetic reinforced soil retaining walls investigated using plaxis code that is based on finite element method. the effects of axial stiffness, length and vertical space between geosynthetic layers, internal friction angle of soil wall and cohesion of foundation on deformations of wall and maximum axial force of geosynthetic have been investigated. results of ana...

Journal: :سد و نیروگاه برق آبی 0
مقداد فاضلی meghdad fazeli [email protected] چنگیز فولادی نشتا changiz fouladi nashta فرید اجلالی farid ejlali

stability and safety analysis of dams is a subject which has been studied in recent years by several researchers. researchers have used various methods and models for studying the stability of the dam. several methods are proposed for the analysis of earth dams under earthquakes. some of these methods are viscoelastic methods and semi static methods. each of these methods can be used as an appr...

In this paper, static response and buckling analysis of functionally graded saturated porous beam resting on Winkler elastic foundation is investigated. The beam is modeled using higher-order shear deformation theory in conjunction with Biot constitutive law which has not been surveyed so far. Three different patterns are considered for porosity distribution along the thickness of the beam: 1) ...

Journal: :Proceedings of the Japan Society of Civil Engineers 1983

Journal: :Proceedings of the Institution of Civil Engineers - Transport 2010

اسلامی, منصور, حاتمی جوشقان, زهرا,

Objective: A better understanding of the role of muscle fatigue in lower limb stiffness during performance will provide a strong foundation for the development of optimal training intervention programs. This study aimed to investigate the effect of fatigue on ankle and knee joints and leg stiffness during a 30-scontinuous vertical jump test. Methods: Fifteen female volleyball players without h...

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