A non-linear numerical model for soil mechanics

1992 ◽  
Vol 16 (4) ◽  
pp. 247-263 ◽  
Author(s):  
T. -T. Ng ◽  
R. Dobry
Keyword(s):  
Numerical Model ◽  
Soil Mechanics ◽  
Non Linear

NUMERICAL MODELING OF VIBRATED BEDS

1993 ◽  
Vol 07 (09n10) ◽  
pp. 1839-1858 ◽  
Author(s):  
Y-h. TAGUCHI
Keyword(s):  
Numerical Modeling ◽  
Numerical Model ◽  
Anomalous Diffusion ◽  
Side Wall ◽  
Convective Motion ◽  
Threshold Value ◽  
Linear Feature ◽  
Non Linear ◽  
Dynamical Features ◽  
First Time

I propose a numerical model which describes the dynamical features of vibrated beds. It succeeds in reproducing convective motion in vibrated beds which was observed by Faraday for the first time in 1831. In addition to this, this modeling can explain threshold value of instability and surface fluidization. Moreover, I numerically show vibrated bed without side wall can exhibit strong non-linear feature like turbulence or anomalous diffusion.

Discrete Numerical Model for Soil Mechanics

1989 ◽  
Vol 115 (3) ◽  
pp. 379-398 ◽  
Author(s):  
John M. Ting ◽  
Brent T. Corkum ◽  
Claudia R. Kauffman ◽  
Carlo Greco
Keyword(s):  
Numerical Model ◽  
Soil Mechanics

Non-Linear Numerical Analysis of Unreinforced Masonry Column and Masonry Column Reinforced by FRP Wrapping

2016 ◽  
Vol 827 ◽  
pp. 279-282
Author(s):  
Aneta Maroušková
Keyword(s):  
Numerical Model ◽  
Computational Cost ◽  
Unreinforced Masonry ◽  
Analysis Tool ◽  
Non Linear ◽  
Commercial Software Package ◽  
Concrete Damaged Plasticity ◽  
Frp Wrapping ◽  
High Computational Cost ◽  
Masonry Units

A numerical model for unreinforced masonry columns and masonry columns reinforced by FRP wrapping is presented in this paper. Both, the bricks and the mortar are modeled as 3D continuum and to the interface between these two materials a non-linear contact law is assigned. The accurate 3D modeling of masonry units and mortar joints within the numerical model leads to high computational cost, but on the other hand, an appropriate analysis tool delivering detailed information about the behavior of masonry columns is obtained. A concrete damaged plasticity model was adopted for mortar and brick. External wrapping by a perfectly-adherent composite based strips and contact between strips and masonry is defined in the next step. The behavior of reinforcement was assumed isotropic and linearly elastic. The response and failure mechanism of masonry columns can be investigated. For all simulations the commercial software package ABAQUS was used. By comparison with results from experiments [1], the performance of the numerical model is evaluated and the obtained numerical results are discussed.

scholarly journals A NUMERICAL MODEL OF STORM WAVES IN SHALLOW WATER

1980 ◽  
Vol 1 (17) ◽  
pp. 45 ◽  
Author(s):  
A. Hauguel
Keyword(s):  
Numerical Model ◽  
Shallow Water ◽  
Coastal Areas ◽  
Storm Waves ◽  
Analytical Results ◽  
Linear Waves ◽  
Non Linear

For studying storm waves in coastal areas, usual waves theories are no more valid. The presented enoidal theory allows the modelling of these problems. Furthermore, thanks to its non-linear properties, it makes possible the simulation of many phenomena usually neglected. A numerical model using this theory has been developped. it has been tested against analytical results and certain properties of non-linear waves experimentaly observed. Finaly, the practical problems raised by the utilisation of this model for harbour agitation computations, have been solved.

EXPERIMENTAL STUDY ON NONLINEAR SHEAR STRENGTH BEHAVIOR OF A TROPICAL GRANITIC RESIDUAL SOIL (GRADE VI) AT VARIOUS INITIAL MOISTURE CONTENTS

2017 ◽  
Vol 79 (2) ◽  
Author(s):  
Pooya Saffari ◽  
Mohd Jamaludin Md Noor ◽  
Shervin Motamedi ◽  
Roslan Hashim ◽  
Zubaidah Ismail ◽  
...  
Keyword(s):  
Shear Strength ◽  
Slope Failure ◽  
Soil Mechanics ◽  
Characteristic Curve ◽  
Triaxial Tests ◽  
Residual Soil ◽  
Strength Behavior ◽  
Non Linear ◽  
Linear Shear ◽  
Linear Envelope

The conventional theories of soil mechanics use linear envelope to derive shear strength; this however, leads to an overestimation of the factor of safety in the examination of slopes. Therefore, the incorporation of methods that acknowledge the existence of non-linear characteristics of shear strength is necessary in the analysis of slopes specifically. This is due to the substantial influence of non-linear shear strength behavior on the slope failure mechanism when they are at low stress levels. In this paper, the nonlinearity of shear strength for grade VI granitic residual soil is studied. “Non-Axis Translation Consolidated Drained Triaxial” tests were performed at various ranges of net stress and suction. Thereafter, to characterize shear strength behavior, shear strength parameters were derived. The soil-water characteristic curve was plotted after conducting “Pressure Plate Extractor” test at a series of suction. The result substantiated the non-linearity of shear strength for granitic residual soil based on net stress and suction.  

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