Verifying an advanced non-linear numerical model for retaining structures – Numerical experiment EN3/2

2006 ◽  
Author(s):  
T Koudelka ◽  
P Koudelka
Keyword(s):  
Numerical Model ◽  
Numerical Experiment ◽  
Retaining Structures ◽  
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.

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.

The Possible Causes of Damage to Concrete Tanks, Numerical Experiment of Fluid-Structure-Soil Interaction

2017 ◽  
Vol 738 ◽  
pp. 227-237 ◽  
Author(s):  
Kamila Kotrasova ◽  
Iveta Hegedusova ◽  
Slavka Harabinova ◽  
Eva Panulinova ◽  
Eva Kormanikova
Keyword(s):  
Numerical Model ◽  
Numerical Experiment ◽  
Seismic Response ◽  
Industrial Applications ◽  
Hazardous Substance ◽  
Fluid Structure ◽  
Aggressive Environment ◽  
Concrete Tank

Ground-supported open top circular concrete tanks are critical and strategic structures. There tanks are used in the commercial and industrial applications to store a variety of liquids as water or other products such as liquid chemicals and hazardous substance. Damages or collapse of containers may be due to the influence of surrounding aggressive environments or an earthquake. This paper provides numerical model on seismic response of fluid - structure - soil interaction. The article also will be described impact aggressive environment in terms of standards and its impact on the quality of the concrete tank.

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.

Numerical experiment applicable to planet formation

1984 ◽  
Vol 75 ◽  
pp. 675-676
Author(s):  
Anny Cazenave
Keyword(s):  
Numerical Model ◽  
Numerical Experiment ◽  
Numerical Integration ◽  
Body Problem ◽  
Three Dimensional ◽  
Dynamical Evolution ◽  
The Sun ◽  
Gravitational Perturbations ◽  
N Body Problem ◽  
Fragmentation Processes

A three-dimensional numerical model has been developed with the goal of studying limited dynamical problems relevant to the latest stage of planet growth in the accretion theory. A small number of large protoplanets (~ moon-size) of different masses, moving around the Sun, are considered. The dynamical evolution and growth of the population is studied under mutual gravitational perturbations, accretion and collisional fragmentation processes. Gravitational encounters are treated exactly by numerical integration of the N-body problem. Outcomes of collisional fragmentation are modeled according to the results of Greenberg et al. (1978).

Unsteady Analysis of a Mechanical Seal Using Duhamel’s Method

2004 ◽  
Vol 127 (3) ◽  
pp. 623-631 ◽  
Author(s):  
Richard F. Salant ◽  
Bin Cao
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Numerical Model ◽  
Numerical Experiment ◽  
Auxiliary Function ◽  
Mixed Lubrication ◽  
Mechanical Seal ◽  
Element Analysis ◽  
Semiempirical Approach

An unsteady numerical model of a mechanical seal, with mixed lubrication, has been developed. The thermal analysis is performed using Duhamel’s method in combination with a numerical experiment to determine Duhamel’s auxiliary function. The results using this semiempirical approach compare well with those from a finite element analysis. The model has been used to predict the performance of a mechanical seal during startup and shutdown.

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