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| Description
| - A simple procedure is presented for the determination of a Periodic Unit Cell (PUC) for a masonry structure made of non-periodically distributed bricks of various sizes and shapes. Such a unit cell, in order to be statistically representative, is derived by matching geometrical statistics related to the original structure and the idealized unit cell. The required input data are obtained from digitized photographs of real historical structures. The parameters of the unit cell then follow from a minimization problem, defined in terms of properly selected statistical descriptors such as the two-point probability function. The resulting optimization problem is efficiently solved by a global optimization technique based on genetic algorithms. The quality of the periodic unit cell is judged by numerical evaluation of effective elastic properties. In this work, three alternative algorithms are considered. The first one is based on well-developed techniques of mathematical homogenization of p.
- A simple procedure is presented for the determination of a Periodic Unit Cell (PUC) for a masonry structure made of non-periodically distributed bricks of various sizes and shapes. Such a unit cell, in order to be statistically representative, is derived by matching geometrical statistics related to the original structure and the idealized unit cell. The required input data are obtained from digitized photographs of real historical structures. The parameters of the unit cell then follow from a minimization problem, defined in terms of properly selected statistical descriptors such as the two-point probability function. The resulting optimization problem is efficiently solved by a global optimization technique based on genetic algorithms. The quality of the periodic unit cell is judged by numerical evaluation of effective elastic properties. In this work, three alternative algorithms are considered. The first one is based on well-developed techniques of mathematical homogenization of p. (en)
- Tento příspěvek porovnává tři přístupy k modelování zděných konstrukcí s nepravidelnou strukturou. První z nich je založen na definici periodické jednotkové buňky, která optimálně aproximuje původní strukturu ve smyslu dvojbodové pravděpodobnosti. Druhý využívá rozšířených Hashin-Shtrikmanových variačních principů; třetí je založen na rychlé Fourierově transformaci. (cs)
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| Title
| - Homogenization of Random Masonry Structures - Comparison of Numerical Methods
- Homogenization of Random Masonry Structures - Comparison of Numerical Methods (en)
- Homogenizace náhodných zděných konstrukcí - porovnání numerických metod (cs)
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| skos:prefLabel
| - Homogenization of Random Masonry Structures - Comparison of Numerical Methods
- Homogenization of Random Masonry Structures - Comparison of Numerical Methods (en)
- Homogenizace náhodných zděných konstrukcí - porovnání numerických metod (cs)
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| skos:notation
| - RIV/68407700:21110/04:01099171!RIV07-GA0-21110___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA103/04/1321), P(GP103/01/D052), P(GP103/04/P254)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21110/04:01099171
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Hashin-Shtrikman variational principles; Lipman-Schwinger equation; finite element method; masonry structures; mathematical homogenization; random heterogenous media; statistically optimized unit cell (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - EM 2004 - 17th ASCE Engineering Mechanics Division Conference
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Novák, Jan
- Zeman, Jan
- Šejnoha, Michal
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| http://localhost/t...ganizacniJednotka
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