نتایج جستجو برای: finite element methode

تعداد نتایج: 397329  

Journal: :journal of dentistry, tehran university of medical sciences 0
yeganeh memari assistant professor, department of prosthodontics, dental school, shahid beheshti university of medical sciences, tehran, iran. allahyar geramy professor, dental research center dentistry research institute, tehran university of medical sciences, department of orthodontics, tehran university of medical sciences, tehran, iran. amir fayaz assistant professor, department of prosthodontics, dental school, shahid beheshti university of medical sciences, tehran, iran. shirin rezvani habib abadi assistant professor, department of prosthodontics, dental school, qazvin university of medical sciences, qazvin, iran. yasaman mansouri private practice.

distal extension removable partial denture is a prosthesis with lack of distal dental support with a 13-fold difference in resiliency between the mucosa and the periodontal ligament, resulting in leverage during compression forces. it may be potentially destructive to the abutments and the surrounding tissues. the aim of this study was to assess the effect of implant location on stress distribu...

This paper poses two magnetostatic problems in cylindrical coordinates with different permeabilities for each region. In the first problem the boundary condition of the second kind is used while in the second one, the boundary condition of the third kind is utilized. These problems are solved using the finite element and finite difference methods. In second problem, the results of the finite di...

A master element to be employed as a general spatial rod finite element is presented. This spatially curved and pretwisted element can have variable cross-section and variable curvature change. It may also be resting on an elastic foundation. Also, a finite element formulation for a general earthquake analysis of spatial rods is presented. The theoretical foundation has lead to a general-purpos...

Journal: :نشریه دانشکده فنی 0
منصور نیکخواه بهرامی عبدالحمید حنانه

static analysis of sandwich constructions subjected to pressure and concentrated loads with the use of finite element method has been discussed in this paper. because of difficulties involved in analytical solution for most of the practical problems. an efficient computer programs has been developed that can be executed on a pc/xt computer and solves complicated problems easily and economically...

M. Vafaeian,

This paper presents the results of a recent study about the following aspects relevant to tunneling in soft grounds:e) The domain of deformations due to tunneling in soft ground can be specified within a boundary of a parabolic shape. This boundary is defined by a parabolic formula as a function of a central angle which depends on the soil type i.e., either cohesive or cohesionless. This para...

M. Vafaeian,

This paper presents the results of a recent study about the following aspects relevant to tunneling in soft grounds:e) The domain of deformations due to tunneling in soft ground can be specified within a boundary of a parabolic shape. This boundary is defined by a parabolic formula as a function of a central angle which depends on the soil type i.e., either cohesive or cohesionless. This para...

Reduced web section beams in shear-yielding moment-resistant steel frames are used for energy dissipating of earthquakes. The finite element analysis indicates that failure mode of these beams are governed by the combination of shear force and flexural moment. Therefore the analysis of frames with reduced web section beams needs consideration of shear-flexural interaction in those sections. In ...

Journal: :international journal of advanced design and manufacturing technology 0
mehdi rezaei farimani hamid ekhteraei toussi

in this paper, we use molecular dynamics and finite element simulations to determine the mechanical properties of single-crystal metal of silver (ag) with nano-holes. the lattice transition method from 3-dimensions into 2-dimentions in molecular dynamics simulation as well as plane stress model in finite element method, is used to lessen the simulation time consuming. elasticity module reductio...

2009
Frank Weichert Andreas Schröder Constantin Landes Lars Walczak Heinrich Müller Mathias Wagner

Kurzfassung. In dieser Arbeit wird ein Verfahren zur Netzgenerierung und Finite-Elemente-Simulation muskulärer Strukturen vorgestellt. Eine Herausforderung liegt dabei in der Fusion der Simulationsergebnisse mit den Daten histologischer Schnittpräparate. Basierend auf segmentierten histologischen Daten wird eine Rekonstruktion der relevanten muskulären Strukturen mittels eines BCC-Tetraedernetz...

Journal: :journal of biomedical physics and engineering 0
sh bazrafkan shiraz university of technology k kazemi shiraz university of technology

background : near infrared spectroscopy imaging is one of the new techniques used for investigating structural and functionality of different body tissues. this is done by injecting light into the medium and measuring the photon intensity at the surface of the tissue. method : in this paper the different medical applications, various imaging and simulation techniques of nirs imaging is describe...

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