scholarly journals A Study on Finite Element Modeling for Numerical Analysis of Groundwater Flow and Transport through Fractured Rock Matrix

1998 ◽  
Vol 1 ◽  
pp. 233-240
Author(s):  
Takeo TANIGUCHI ◽  
Harald KASPER ◽  
Olaf KOLDITZ ◽  
Wbrner ZIELKE
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Groundwater Flow ◽  
Finite Element Modeling ◽  
Fractured Rock ◽  
Rock Matrix ◽  
Flow And Transport ◽  
Element Modeling ◽  
Groundwater Flow And Transport

2D Meso-Scale Finite Element Modeling and Simulation of Polymer-Mineral Composite Material

2016 ◽  
Vol 848 ◽  
pp. 3-8
Author(s):  
Pei Yao Sheng ◽  
Shi Zhao Wang ◽  
Zhong Ji
Keyword(s):  
Finite Element ◽  
Composite Material ◽  
Numerical Analysis ◽  
Finite Element Modeling ◽  
Epoxy Resin ◽  
Element Model ◽  
Fe Model ◽  
Element Modeling ◽  
Low Thermal Expansion ◽  
Meso Scale

Polymer-mineral composite material is prepared by using modified epoxy resin as binder and mineral particles as aggregates. Its excellent damping characteristic and low thermal expansion make it ideal in manufacturing machine tool beds. However, the properties of this material depend on its formula and structure, so it is very important to develop an efficient method to numerically model the materials and then to optimize their properties. In this paper, 2D meso-scale finite element modeling is presented for numerical analysis of the mechanical properties of polymer-mineral composite material. The material was treated as a 2-phase composite composed of aggregates and binder which was epoxy resin mixed with fillers. Based on grading curve, the weights of aggregates were converted into the corresponding area, the aggregate particles were randomly generated and assembled with binder to produce the model. And then 2D numerical simulations were conducted under different gradations. The results show that: (1) the 2D FE model is very close to the real polymer-mineral composite material in the aspect of density and aggregate shapes and sizes, which validate the fidelity of the generated finite element model and numerical analysis method; (2) by comparing the materials’ properties under four different gradations, it can be found that the materials with SAC gradation have the best mechanical property.

STABILITY EVALUATION OF STEEL BRACED FRAMES UNDER INELASTIC CYCLIC LOADING

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Iraj H. P. Mamaghani
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Finite Element Modeling ◽  
Cyclic Behavior ◽  
Cyclic Performance ◽  
Braced Frames ◽  
Element Analysis ◽  
Elastoplastic Behavior ◽  
Element Modeling ◽  
Strength And Ductility

This paper deals with the inelastic cyclic analysis and stability (strength and ductility) evaluation of steel braced frames. The inelastic cyclic performance of steel braced frames is examined through finite element analysis using the commercial computer program ANSYS. First some of the most important parameters considered in the practical design and ductility evaluation of steel braces are presented. Then the details of finite element modeling and numerical analysis are described. Later the accuracy of the analytical model employed in the analysis is substantiated by comparing the analytical results with the available test data in the literature. Finally, the effects of some important structural and material parameters on cyclic elastoplastic behavior of steel braced frames are discussed and evaluated. It is concluded that the numerical method and finite-element modeling employed in the numerical analysis can predict with a reasonable degree of accuracy the experimentally observed cyclic behavior of steel-braced frames.

Exact First Order Finite Element Modeling for Eddy Current NDE

1991 ◽  
Vol 3 (1) ◽  
pp. 235-253 ◽  
Author(s):  
L. D. Philipp ◽  
Q. H. Nguyen ◽  
D. D. Derkacht ◽  
D. J. Lynch ◽  
A. Mahmood
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Eddy Current ◽  
Element Modeling ◽  
First Order ◽  
Eddy Current Nde
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