نتایج جستجو برای: FE modeling

تعداد نتایج: 466035  

Dynamic response analysis of mechanical structures is usually performed by adopting numerical/analytical models. Finite element (FE) modeling as a numerical approach plays an important role in dynamic response analysis of complex structures. The calculated dynamic responses from FE analysis are only reliable if accurate FE models are used. There are many elements in real mechanical structures w...

2006
Dimos C. Charmpis Gerhart I. Schuëller

This work examines the effect of quantitative uncertainties modeling on the need for refined Finite Element (FE) meshes, as well as the influence of mesh density on the results obtained using FE models including uncertainties. According to the numerical investigation performed, the modeling of uncertainties has an effect on the accuracy of the FE solution sought and relaxes the need for increas...

Journal: :journal of particle science & technology 2015
seyed mahhdi latifi mohamad amin ghotbi ravandi

in this work the kinetic data demanded for kinetic modeling were obtained in temperatures 350, 400, 450 and 500 oc by conducting experimentations on a fe-cr nanocatalyst prepared from a novel method and a commercial fe-cr-cu one. the collected data were subjected to kinetic modeling by using two models derived from redox and associative mechanisms as well as an empirical one. the coefficients o...

2012
Marta Kurutz

Finite element (FE) numerical simulation is an effective tool for analyzing phenomena that cannot be clarified by experimental methods, like most of the biomechanical processes, for example the age-related spinal degeneration processes. Moreover, numerical simulation techniques have the potential to reduce costs and to save time during the development of new effective spinal treatment methods o...

2008
Jun Liu Shanan Zhu Yingchun Zhang Bin He

Accurate modeling of head volume conductor plays an important role in EEG/MEG forward and inverse problems. The finite element (FE) modeling of realistic head is a key issue for the finite element analysis of brain electromagnetic field. Various FE modeling methods have been investigated and developed recently to model the realistic head volume conductor, but these methods either use approximat...

Journal: :Medical engineering & physics 2005
Jeffrey A Weiss John C Gardiner Benjamin J Ellis Trevor J Lujan Nikhil S Phatak

The objective of this paper is to describe strategies for addressing technical aspects of the computational modeling of ligaments with the finite element (FE) method. Strategies for FE modeling of ligament mechanics are described, differentiating between whole-joint models and models of individual ligaments. Common approaches to obtain three-dimensional ligament geometry are reviewed, with an e...

2000
Dale Ostergaard Miklos Gyimesi

The paper demonstrates reduced order modeling (ROM) of the strongly coupled system level dynamic analysis of micro electro mechanical systems (MEMS) by lumped finite elements (FE) and substructuring implemented in the ANSYS/Multiphysics program. Index terms Micro Electromechanical Systems (MEMS), Finite elements (FE), Coupled analysis, Reduced order modeling (ROM)

2000
Dale Ostergaard Miklos Gyimesi

The paper demonstrates reduced order modeling (ROM) of the strongly coupled system level dynamic analysis of micro electro mechanical systems (MEMS) by lumped finite elements (FE) and substructuring implemented in the ANSYS/Multiphysics program. Index terms Micro Electromechanical Systems (MEMS), Finite elements (FE), Coupled analysis, Reduced order modeling (ROM)

2012
Quan Gu Philip E. Gill Frank McKenna

The finite-element (FE) method is widely recognized as a powerful tool in modeling structural and geotechnical systems and simulating their response to static and dynamic loads. In addition, numerical optimization is commonly used in many engineering applications, such as structural reliability analysis, FE model updating, structural identification, and structural optimization. This paper focus...

2003
Ulf Sellgren

VISP MMK 2 SUMMARY The finite element (FE) method is a general method to model and simulate the physical behavior of bodies with arbitrary shape. There is a desire to create and use FE models early in the design process as well as to use the method detailing of complex artifacts. Modeling of the dynamic behavior of a multi-body system (MBS) is characterized by a composition of rigid bodies, int...

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