Conversion of Fractal Fields into Heterogeneities inside SPH Simulations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU127139" target="_blank" >RIV/00216305:26110/17:PU127139 - isvavai.cz</a>

Result on the web

<a href="http://iopscience.iop.org/article/10.1088/1757-899X/245/3/032024/pdf" target="_blank" >http://iopscience.iop.org/article/10.1088/1757-899X/245/3/032024/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/245/3/032024" target="_blank" >10.1088/1757-899X/245/3/032024</a>

Result language

angličtina

Original language name

Conversion of Fractal Fields into Heterogeneities inside SPH Simulations

Original language description

The inclusion of material heterogeneities in numerical simulations enables us to come close to the almost perfect description of the behaviour of structures. There are various ways and methods of introducing heterogeneity into a computational model. One of the methods is the creation of areas (fractal fields) in which material properties differ. The shape of such fractals is most frequently based on simple mathematical functions. However, this destroys the ability of the model to represent reality, as the structure of a real material is not based on any mathematical function. Fractals do not have to be based just on one simple mathematical function. On the contrary, they can be based on more complex inputs, such as real images of materials. In the case of images of concrete, fields can be generated which correspond to the presence of an aggregate, a cement binder or an air void. The contribution therefore describes fundamental steps in the creation of fractals, or the creation of fields based on real images of a material. The contribution also deals with the creation of material parameter oscillations and their subsequent inclusion in the numerical code of the Smoothed Particle Hydrodynamics (SPH) method. The conditions necessary for successful simulations if the SPH method is used are described. The whole process is clearly demonstrated using a pressure test conducted on a cylindrical concrete specimens. The presented results show the consequences of the inclusion of material heterogeneity in numerical simulations. These include randomness in the failure type or differences in the stress–strain diagrams of the monitored specimens. The functionality of the proposed process is supported by the results.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA17-23578S" target="_blank" >GA17-23578S: Damage assessment identification for reinforced concrete subjected to extreme loading</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

IOP Conf. Series: Materials Science and Engineering of World Multidisciplinary Civil Engineering - Architecture - Urban Planning Symposium 2017

ISBN

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ISSN

1757-8981

e-ISSN

—

Number of pages

10

Pages from-to

1-10

Publisher name

Neuveden

Place of publication

Neuveden

Event location

Prague

Event date

Jun 12, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000419056401023