Assessing In-situ Nonlinear Model Parameters for Material of Changheba High Earth Core Rockfill Dam Through Finite Element Analysis

2018 ◽  
pp. 179-188
Author(s):  
Xingxing Zhang ◽  
Gang Deng ◽  
Dan Zhang ◽  
Shu Yu ◽  
Shunbin He ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Nonlinear Model ◽  
Model Parameters ◽  
Element Analysis ◽  
Earth Core ◽  
Rockfill Dam ◽  
Core Rockfill Dam

Finite Element Analysis of Stress Deformation of Earth-Rock Dam on Narrow Valley

2014 ◽  
Vol 580-583 ◽  
pp. 1852-1855
Author(s):  
Fu Yong Chu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Theoretical Basis ◽  
Element Analysis ◽  
Rockfill Dam ◽  
Narrow Valley ◽  
Stress Deformation ◽  
Design Proposal ◽  
Incremental Loading ◽  
Core Rockfill Dam

The three-dimentional finite element analysis is adopted to simulate and cauculate the stresses and deformations of a certain core rockfill dam on narrow velley, with Duncan-Chang E-ν model during its completion and operation periods by incremental loading. The results show that the stresses and deformations of core rockfill dam on narrow velley are allowble and the design proposal is reasonable, which provides the theoretical basis for similar engineering.

Finite Element Analysis of Ceramic Coating Systems Under Spherical Indentation With Metallic Interlayer: Part I — Uncracked Coatings

2005 ◽  
Author(s):  
Minh-Quy Le ◽  
Jin-Woo Yi ◽  
Seock-Sam Kim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Coating Thickness ◽  
Radial Stress ◽  
Ceramic Coating ◽  
Ceramic Coatings ◽  
Spherical Indentation ◽  
Model Parameters ◽  
Element Analysis ◽  
Plastic Damage

Spherical indentation problems of ceramic coatings/metallic inter-layer/ductile substrate were investigated numerically by axisymmetric finite element analysis (FEA) for two typical ceramic coatings with relatively high and low elastic modulus deposited on aluminum alloy and carbon steel. Various indenter radius-coating thickness ratios and interlayer thickness-coating thickness ratios were used in the modeling. Radial stress distribution and plastic damage zones evolution were discussed in connection with model parameters. The results showed that the suitable metallic interlayer could improve resistance of ceramic coating systems through reducing the peak tensile radial stress on the surface and interface of ceramic coatings and plastic damage zone size in the substrate under spherical indentation.

Finite Element Analysis of El Infiernillo Dam

1973 ◽  
Vol 10 (2) ◽  
pp. 129-144 ◽  
Author(s):  
N. A. Skermer
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Soil Structure ◽  
Triaxial Tests ◽  
Soil Parameters ◽  
Element Analysis ◽  
The Core ◽  
Rockfill Dam ◽  
The Finite Element Analysis ◽  
Fundamental Understanding

A simple trapezoidal element is presented for use in the analysis of thin core rockfill dams with nonlinear soil parameters. Handling of nonlinear soil parameters and allowance for the intermediate principal stress in plane strain problems are discussed. The analysis of El Infiernillo rockfill dam using trapezoids in the core and transitions, and variable Young's modulus and Poisson's ratio, reveals the transfer of stress that takes place around the core. Comparisons of strain observations at El Infiernillo Dam with results from the analysis are good, except in zones of compacted rockfill. It appears that the actual stiffness of compacted granular fills may be seriously underestimated, if soil parameters are based on data obtained from triaxial tests on normally consolidated samples. A fundamental understanding of soil deformation behavior would lead to an improvement in the finite element analysis of soil structure.

The Application of ABAQUS in Finite Element Analysis of CFRD

2012 ◽  
Vol 466-467 ◽  
pp. 165-169
Author(s):  
Xiang Li Huo ◽  
Bo Wang ◽  
Zong Kun Li
Keyword(s):  
Finite Element Analysis ◽  
Sensitivity Analysis ◽  
Finite Element ◽  
Dam Construction ◽  
Element Analysis ◽  
Univariate Sensitivity Analysis ◽  
Rockfill Dam ◽  
Reservoir Impoundment ◽  
Concrete Face ◽  
Concrete Face Rockfill Dam

The deformations and stresses of a concrete face rockfill dam (CFRD) for dam construction and reservoir impoundment were simulated by the element add/remove technique of ABAQUS. And, the sensitivity analysis of main parameters of the Duncan-Chang E-B model was carried out by the method of univariate sensitivity analysis and the critical sensitivity parameters of the deformation and stress on the CFRD were obtained. This research has some guidance and reference for future similar projects design and monitoring.

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