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[nazev] => Mobilní experimentální jednotka pro čištění spalin
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[popis] => Předpokladem úspěšného zneškodňování všech znečišťujících látek přítomných v různých odpadních plynech (spalinách) je výběr vhodné technologie. Ten spočívá především v ekologických a ekonomických aspektech, které jsou známé pro dané technologie. V dnešní době se však stále objevují nové technologie, které jsou ekonomicky výhodné a splňují veškeré ekologické požadavky, ale nejsou příliš rozšířené zejména kvůli nedostatku informací o těchto technologiích a zkušeností. Tato skutečnost vedla k myšlence výzkumu a vývoje zcela nového a původního experimentálního zařízení pracujícího na principu různých technologií, které by umožňovalo variabilně čistit v provozním měřítku odpadní plyny (spaliny) produkované z reálných provozů (zejména jednotek pro termické zpracování - spaloven) od těchto znečišťujících látek, kterými jsou:
- tuhé znečišťující látky (TZL)
- anorganické sloučeniny (HCl, HF) a oxid siřičitý (SO2)
- těkavé organické látky (VOC)
- dioxiny/furany (PCDD/F)
- oxidy dusíku (NOX)
- těžké kovy
Možnosti čištění výše uvedených znečišťujících látek je dosaženo koncepcí řešeného experimentálního zařízení, které pracuje variabilně na principu technologií jako jsou filtrace, katalytická filtrace, adsorpce, tzv. suchá vypírka spalin a katalytický rozklad znečišťujících látek.
Vyvíjené zařízení je koncipováno jako mobilní a bude sloužit především pro experimentální ověřování účinnosti uváděných technologií pro čištění odpadních plynů (spalin) přímo v průmyslu. Dále budou experimentálně získaná data zpracována a jednotlivé technologie budou popsány matematickými modely, vyhodnoceny a optimalizovány.
[popis_orig] => Předpokladem úspěšného zneškodňování všech znečišťujících látek přítomných v různých odpadních plynech (spalinách) je výběr vhodné technologie. Ten spočívá především v ekologických a ekonomických aspektech, které jsou známé pro dané technologie. V dnešní době se však stále objevují nové technologie, které jsou ekonomicky výhodné a splňují veškeré ekologické požadavky, ale nejsou příliš rozšířené zejména kvůli nedostatku informací o těchto technologiích a zkušeností. Tato skutečnost vedla k myšlence výzkumu a vývoje zcela nového a původního experimentálního zařízení pracujícího na principu různých technologií, které by umožňovalo variabilně čistit v provozním měřítku odpadní plyny (spaliny) produkované z reálných provozů (zejména jednotek pro termické zpracování - spaloven) od těchto znečišťujících látek, kterými jsou:
- tuhé znečišťující látky (TZL)
- anorganické sloučeniny (HCl, HF) a oxid siřičitý (SO2)
- těkavé organické látky (VOC)
- dioxiny/furany (PCDD/F)
- oxidy dusíku (NOX)
- těžké kovy
Možnosti čištění výše uvedených znečišťujících látek je dosaženo koncepcí řešeného experimentálního zařízení, které pracuje variabilně na principu technologií jako jsou filtrace, katalytická filtrace, adsorpce, tzv. suchá vypírka spalin a katalytický rozklad znečišťujících látek.
Vyvíjené zařízení je koncipováno jako mobilní a bude sloužit především pro experimentální ověřování účinnosti uváděných technologií pro čištění odpadních plynů (spalin) přímo v průmyslu. Dále budou experimentálně získaná data zpracována a jednotlivé technologie budou popsány matematickými modely, vyhodnoceny a optimalizovány.
[klicova_slova] => odpadní plyn, spaliny, snižování emisí, optimalizace
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[nazev_en] => Mobile experimental unit for off-gas cleaning
[popis_en] => The first condition of successful disposal of all pollutants present in various waste gases (flue gases) is a suitable choice of technology. This is based mainly on ecological and economical aspects available for those technologies. There are many new technologies which are economically suitable and meet all environmental requirements, but are not widely used due to lack of information. This has led us to research and development of a novel and original experimental unit which will operate using various technologies, with the aim of variable reduction of waste gas (flue gas) produced from existing plants (especially from units for heat utilization - incinerator plants) and polluted by these pollutants:
- solid pollutants
- inorganic compounds (HCl, HF) and sulphur dioxide (SO2)
- volatile organic compounds (VOC)
- dioxins/furans (PCDD/F)
- nitrogen oxides (NOX)
- heavy metals
A reduction of emissions can be reached by a conception of an experimental unit of applying various techniques as filtration, catalytic filtration, adsorption, so-called dry flue gas acid cleaning and catalytic decomposition of pollutants.
The developed unit is mobile and will serve mainly for experimental tests of effectiveness of given technologies for emission reduction directly at industrial plants. The obtained data will be evaluated and specific technologies will be modelled, evaluated and optimised.
[klicova_slova_en] => waste gas, flue gas, emission reduction, optimisation
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[popis] => This paper describes three new technologies/equipments, which effectively reduce the amount of pollutants in off-gases produced by incineration plants, refineries or various chemical and similar plants. These equipments have low investment and operational costs and effectively remove pollutants.
[popis_orig] => This paper describes three new technologies/equipments, which effectively reduce the amount of pollutants in off-gases produced by incineration plants, refineries or various chemical and similar plants. These equipments have low investment and operational costs and effectively remove pollutants.
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[citace_text] => DVOŘÁK, R.; MÁŠA, V.; CHLÁPEK, P.; SOLODYANKIN, K. Novel types of equipment for off-gas cleaning. In Computer-aided chemical engineering, 24. Bukurešť, Rumunsko: 2007. p. 1-6. ISBN: 978-0-444-53158-2.
[citace_html] => DVOŘÁK, R.; MÁŠA, V.; CHLÁPEK, P.; SOLODYANKIN, K. Novel types of equipment for off-gas cleaning. In Computer-aided chemical engineering, 24. Bukurešť, Rumunsko: 2007. p. 1-6. ISBN: 978-0-444-53158-2.
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[klicova_slova_en] => waste gas, off-gas, flue gas, air pollutants, emission reduction
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[nazev_orig] => Ověření charakteristik ocelového lana závěsu výložníku u věžového jeřábu MB 1030.11
[duvernost_udaju_id] => S
[popis] => Stavební věžový jeřáb je z hlediska konstrukce a bezpečnosti provozu složitý stroj, jehož mechanické vlastnosti jsou plně pod kontrolou obsluhy. Tato obsluha má po stránce bezpečnosti jasně vymezené mezní provozní podmínky, které jsou kontrolovány monitorovacím elektronickým systémem. Propojením monitorovacího a ovládacího zařízení získáme mechatronický systém ovládání stavebního jeřábu. Tuto elektronickou ochranu lze uplatnit i u starších typů stavebních jeřábů jako je právě typ MB 1030.11 dodatečnou montáží. Nelze však zabezpečit tento typ stavebního jeřábu bez znalostí fyzikálních parametrů jeho prvků při průběhu pracovního cyklu v celém spektru jeho zatěžovací křivky. Velmi důležitým prvkem u tohoto mobilního jeřábu je pro stabilitu výložníku ocelové lano, které jako pružný člen dovoluje mobilnost stroje a zároveň omezuje hodnotu nosnosti. Proto z důvodu rozdílu mezi výpočtovými a empiricky zjišťovanými hodnotami modulu pružnosti, jsme přistoupili k identifikaci skutečné hodnoty modulu pružnosti pro daný typ lana. Identifikace byla prováděna inverzní metodou řešení dané úlohy.
[popis_orig] => Stavební věžový jeřáb je z hlediska konstrukce a bezpečnosti provozu složitý stroj, jehož mechanické vlastnosti jsou plně pod kontrolou obsluhy. Tato obsluha má po stránce bezpečnosti jasně vymezené mezní provozní podmínky, které jsou kontrolovány monitorovacím elektronickým systémem. Propojením monitorovacího a ovládacího zařízení získáme mechatronický systém ovládání stavebního jeřábu. Tuto elektronickou ochranu lze uplatnit i u starších typů stavebních jeřábů jako je právě typ MB 1030.11 dodatečnou montáží. Nelze však zabezpečit tento typ stavebního jeřábu bez znalostí fyzikálních parametrů jeho prvků při průběhu pracovního cyklu v celém spektru jeho zatěžovací křivky. Velmi důležitým prvkem u tohoto mobilního jeřábu je pro stabilitu výložníku ocelové lano, které jako pružný člen dovoluje mobilnost stroje a zároveň omezuje hodnotu nosnosti. Proto z důvodu rozdílu mezi výpočtovými a empiricky zjišťovanými hodnotami modulu pružnosti, jsme přistoupili k identifikaci skutečné hodnoty modulu pružnosti pro daný typ lana. Identifikace byla prováděna inverzní metodou řešení dané úlohy.
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[citace_text] => POKORNÝ, P.; NÁVRAT, T.; KAŠPÁREK, J.; VRBKA, M. Ověření charakteristik ocelového lana závěsu výložníku u věžového jeřábu MB 1030.11. In Zdvíhací zařízení v teorii a praxi 2007. Brno: VUT Brno 2007, 2007. s. 130-133. ISBN: 978-80-214-3391-5.
[citace_html] => POKORNÝ, P.; NÁVRAT, T.; KAŠPÁREK, J.; VRBKA, M. Ověření charakteristik ocelového lana závěsu výložníku u věžového jeřábu MB 1030.11. In Zdvíhací zařízení v teorii a praxi 2007. Brno: VUT Brno 2007, 2007. s. 130-133. ISBN: 978-80-214-3391-5.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT22226,
author="Přemysl {Pokorný} and Tomáš {Návrat} and Jaroslav {Kašpárek} and Martin {Vrbka}",
title="Ověření charakteristik ocelového lana závěsu výložníku u věžového jeřábu MB 1030.11",
booktitle="Zdvíhací zařízení v teorii a praxi 2007",
year="2007",
pages="130--133",
publisher="VUT Brno 2007",
address="Brno",
isbn="978-80-214-3391-5"
}
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[poznamka_metriky] =>
[nazev_en] => Steel Rope Characteristics Verification of Jib Attachment of Tower Crane MB 1030.11
[popis_en] => There is a significant effect of elastic modulus of hanging rope to the stability of the jib of construction tower crane. Results, which were gained from computation, were compared with values obtained from experimental measurement.
There was made identification real values of elastic modulus for given type of rope, because of difference between computational and experimental results.
Identification was made by inversive method.
[klicova_slova_en] => elastic modulus, stability, tower crane, identification, inversive method.
[vysledek_datum] => 2007-04-01T00:00:00+02:00
)
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[duvernost_udaju_id] => S
[popis] => Proces válcování oceli za tepla je neoddělitelně spojen s oxidací válcovaného materiálu za zvýšených teplot. Pro odstranění vrstvy okují se používá hydraulického ostřiku, který je součástí každé válcovací trati. Pro studii tohoto procesu byly vytvořeny v programovém systému Ansys dva FE modely a použity pro napjatpstní analýzu ve vrstvě okují.
[popis_orig] => Proces válcování oceli za tepla je neoddělitelně spojen s oxidací válcovaného materiálu za zvýšených teplot. Pro odstranění vrstvy okují se používá hydraulického ostřiku, který je součástí každé válcovací trati. Pro studii tohoto procesu byly vytvořeny v programovém systému Ansys dva FE modely a použity pro napjatpstní analýzu ve vrstvě okují.
[klicova_slova] => vrstvy okují, FE model,hydraulický ostřik
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[url] =>
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[identifikator] => ISBN 80-239-1598-3
[identifikator_popis] => ISBN - Ansys&Star - CD Users´ Meeting
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[citace_text] => TOŠOVSKÝ, J. Využití programového systému Ansys pro modelování chování vrstvy okují při procesu hydraulického odkujení. In Ansys&Star - CD Users´ Meeting. Sborník přednášek. Brno: SVS FEM s.r.o. Brno, 2003. 6 s. ISBN: 80-239-1598-3.
[citace_html] => TOŠOVSKÝ, J. Využití programového systému Ansys pro modelování chování vrstvy okují při procesu hydraulického odkujení. In Ansys&Star - CD Users´ Meeting. Sborník přednášek. Brno: SVS FEM s.r.o. Brno, 2003. 6 s. ISBN: 80-239-1598-3.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT13498,
author="Jiří {Tošovský}",
title="Využití programového systému Ansys pro modelování chování vrstvy okují při procesu hydraulického odkujení",
booktitle="Ansys&Star - CD Users´ Meeting",
year="2003",
series="Sborník přednášek",
pages="6",
publisher="SVS FEM s.r.o. Brno",
address="Brno",
isbn="80-239-1598-3"
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[nazev_en] => Application of the Ansys system for modelling of scale layer behaviour at the hydraulic dscaling process
[popis_en] => The steel rolling process is inseparably linked to the oxidation of rolled material at increased temperatures. Hydraulic descaling is used when removing the layers of scales. Two FE models use dfor the stres analyseis were created in the system Ansys to study this process.
[klicova_slova_en] => layers of scales FE model, hydraulic descaling
[vysledek_datum] => 2003-09-26T00:00:00+02:00
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[popis] => The paper is to provide an overview of the key challenges and knowledge gaps in additive manufacturing of metals applied to two parts of a novel heat switch technology – a Baseplate and a Flexible thermal structure. Additive design, optimization and manufacturing capabilities as well as quality of produced parts were investigated. The key challenge was to manufacture bio-inspired structure without internal supports and assure 190 surfaces to be in a contact at the same time for efficient heat transfer. Finally, modern trends in additive as multi-material design and manufacturing or effect of defects are discussed for further evolution of parts.
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[klicova_slova] => Space technology, heat switch, additive manufacturing of metals, capabilities
[klicova_slova_orig] => Space technology, heat switch, additive manufacturing of metals, capabilities
[url] => https://www.eucass.eu/conferences-and-publications/search-on-this-website?searchword=eucass2022%20Masek&searchphrase=all&limit=20&areas[0]=doc_indexer
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[citace_text] => MAŠEK, J.; LÖFFELMANN, F.; POPELA, R.; KUBÍK, P.; ŠEBEK, F.; KOUTNÝ, D.; MALÝ, M.; PANTĚLEJEV, L.; PAMBAGUIAN, L. Additive manufacturing capabilities for heat switch technology: Key challenges & knowledge gaps. Lille, Francie: EUCASS association, 2022. p. 1-15.
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[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT179966,
author="Jakub {Mašek} and František {Löffelmann} and Robert {Popela} and Petr {Kubík} and František {Šebek} and Daniel {Koutný} and Martin {Malý} and Libor {Pantělejev} and Laurent {Pambaguian}",
title="Additive manufacturing capabilities for heat switch technology: Key challenges & knowledge gaps",
year="2022",
pages="1--15",
publisher="EUCASS association",
address="Lille, Francie",
doi="10.13009/EUCASS2022-6196",
url="https://www.eucass.eu/conferences-and-publications/search-on-this-website?searchword=eucass2022%20Masek&searchphrase=all&limit=20&areas[0]=doc_indexer"
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[nazev_en] => Additive manufacturing capabilities for heat switch technology: Key challenges & knowledge gaps
[popis_en] => The paper is to provide an overview of the key challenges and knowledge gaps in additive manufacturing of metals applied to two parts of a novel heat switch technology – a Baseplate and a Flexible thermal structure. Additive design, optimization and manufacturing capabilities as well as quality of produced parts were investigated. The key challenge was to manufacture bio-inspired structure without internal supports and assure 190 surfaces to be in a contact at the same time for efficient heat transfer. Finally, modern trends in additive as multi-material design and manufacturing or effect of defects are discussed for further evolution of parts.
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[nazev] => Baseplate demonstrator: aluminium 3D-printed part of heat switch for space application
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[popis] => The Baseplate demonstrator is part of a heat switch for thermal management in space application and being developed for the European Space Agency ESA. Bio-inspired design of highly optimized structure was manufactured by additive technology Selective Laser Melting from aluminium alloy powder. The design implements constraints of both the additive technology, material and future application. Functional sample is used for further testing.
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[url] =>
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[citace_text] => MAŠEK, J.; LÖFFELMANN, F.; KUBÍK, P.; ŠEBEK, F.; MALÝ, M.; KOUTNÝ, D.: Baseplate demonstrator: aluminium 3D-printed part of heat switch for space application. (Funkční vzorek)
[citace_html] => MAŠEK, J.; LÖFFELMANN, F.; KUBÍK, P.; ŠEBEK, F.; MALÝ, M.; KOUTNÝ, D.: Baseplate demonstrator: aluminium 3D-printed part of heat switch for space application. (Funkční vzorek)
[citace_rtf] =>
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author="Jakub {Mašek} and František {Löffelmann} and Petr {Kubík} and František {Šebek} and Martin {Malý} and Daniel {Koutný}",
title="Baseplate demonstrator: aluminium 3D-printed part of heat switch for space application",
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note="Functioning sample"
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[nazev_en] => Baseplate demonstrator: aluminium 3D-printed part of heat switch for space application
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[popis] => Oxide scale growth and its removal from steel surface during heat treatment of steel is a complex and exacting process requiring a lot of information and analyses. Therefore many methods and approaches were developed to solve it. In order to improve the final quality of the surfaces after descaling it is necessary to pay attention to all aspects related to descaling. The basic aspects include scale growth, properties and behavior, parameters affecting its removal. This paper is focused on the study of fracture toughness of oxide scales. Study of fracture toughness is fundamental for understanding the behavior of oxide scales. For the analysis of fracture toughness Small Punch Testing was used. Small Punch Tests are generally used in energy industry, when it is necessary to determine the mechanical properties of the material that has been exposed to environmental influences or load without significant damage of the device. The typical result of the Small Punch tests is force vs. displacement curve. Out of this curve it is also possible to evaluate the fracture toughness using several methods. Experimental measurements of mechanical properties of oxide scales were based on two types of steel. The first type represents the structural steel, the second type of steel is characterized by higher silicon content. For both materials the specimens with oxide scales layer were prepared. The Small Punch Tests were carried out and force vs. displacement curve was obtained. Out of these curves the fracture toughness of each material was evaluated.
[popis_orig] => Oxide scale growth and its removal from steel surface during heat treatment of steel is a complex and exacting process requiring a lot of information and analyses. Therefore many methods and approaches were developed to solve it. In order to improve the final quality of the surfaces after descaling it is necessary to pay attention to all aspects related to descaling. The basic aspects include scale growth, properties and behavior, parameters affecting its removal. This paper is focused on the study of fracture toughness of oxide scales. Study of fracture toughness is fundamental for understanding the behavior of oxide scales. For the analysis of fracture toughness Small Punch Testing was used. Small Punch Tests are generally used in energy industry, when it is necessary to determine the mechanical properties of the material that has been exposed to environmental influences or load without significant damage of the device. The typical result of the Small Punch tests is force vs. displacement curve. Out of this curve it is also possible to evaluate the fracture toughness using several methods. Experimental measurements of mechanical properties of oxide scales were based on two types of steel. The first type represents the structural steel, the second type of steel is characterized by higher silicon content. For both materials the specimens with oxide scales layer were prepared. The Small Punch Tests were carried out and force vs. displacement curve was obtained. Out of these curves the fracture toughness of each material was evaluated.
[klicova_slova] => Oxide scales, Small Punch Test, fracture toughness, force-displacement curve
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[citace_text] => HRABOVSKÝ, J.; LOŠÁK, P.; HORSKÝ, J. ESTIMATION OF FRACTURE TOUGHNESS OF THE OXIDE SCALES. In 22.ročník mezinárodní konference metalurgie a materiálů METAL 2013. 1. Brno: Tanger Ltd., 2013. p. 1-6. ISBN: 978-80-87294-41-3.
[citace_html] => HRABOVSKÝ, J.; LOŠÁK, P.; HORSKÝ, J. ESTIMATION OF FRACTURE TOUGHNESS OF THE OXIDE SCALES. In 22.ročník mezinárodní konference metalurgie a materiálů METAL 2013. 1. Brno: Tanger Ltd., 2013. p. 1-6. ISBN: 978-80-87294-41-3.
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[popis_en] => Oxide scale growth and its removal from steel surface during heat treatment of steel is a complex and exacting process requiring a lot of information and analyses. Therefore many methods and approaches were developed to solve it. In order to improve the final quality of the surfaces after descaling it is necessary to pay attention to all aspects related to descaling. The basic aspects include scale growth, properties and behavior, parameters affecting its removal. This paper is focused on the study of fracture toughness of oxide scales. Study of fracture toughness is fundamental for understanding the behavior of oxide scales. For the analysis of fracture toughness Small Punch Testing was used. Small Punch Tests are generally used in energy industry, when it is necessary to determine the mechanical properties of the material that has been exposed to environmental influences or load without significant damage of the device. The typical result of the Small Punch tests is force vs. displacement curve. Out of this curve it is also possible to evaluate the fracture toughness using several methods. Experimental measurements of mechanical properties of oxide scales were based on two types of steel. The first type represents the structural steel, the second type of steel is characterized by higher silicon content. For both materials the specimens with oxide scales layer were prepared. The Small Punch Tests were carried out and force vs. displacement curve was obtained. Out of these curves the fracture toughness of each material was evaluated.
[klicova_slova_en] => Oxide scales, Small Punch Test, fracture toughness, force-displacement curve
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[nazev] => Srovnání dvou optimalizačních metod při hledání materiálových parametrů pro protlačovací zkoušku
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[popis] => Pro měření mechanických vlastností oceli byla pro tento článek zvolena protlačovací zkouška tzv. „Small Punch test“ (dále jen SPT). Tato metoda je považována za nedestruktivní, protože jsou pro měření používány vzorky malých rozměrů, které je možné získat ze zkoumané součástky bez její významné destrukce. Tato metoda je při dodržení určitých předpokladů považována za ekvivalentní metodu s tahovou zkouškou. Pomocí této zkoušky je možné získat stejné parametry jako při provedení tahové zkoušky. Výsledkem měření metodou SPT je závislost síly na posunutí. Pro převod těchto závislostí se používají různé metody (grafické metody, empirické vztahy, numerické). Jednou z těchto metod je i metoda konečných prvků, která slouží k simulaci samotné protlačovací zkoušky a na základě změřené závislosti síly na posunutí se zjišťují potřebné koeficienty pro transformaci na křivku napětí v závislosti na přetvoření (elasto-plastická křivka). Tento článek je zaměřen na srovnání dvou způsobů hledání vhodných koeficientů pro transformaci změřených závislostí síly na posunutí pro danou ocel při zvýšených teplotách v prostředí Ansys Workbench. Pro hledání vhodné transformace byly uvažovány dva typy popisu chování materiálu (Ramberg-Osgood, Chaboche) a také dvě optimalizační techniky. První optimalizační technikou byla tzv. Screening metoda, která je součástí optimalizačního balíčku implementovaného přímo v prostředí Ansys Workbench. Druhou optimalizační technikou byl Genetický algoritmus, který byl implementován pomocí skriptovacího jazyku Python do prostředí Ansys Workbench. Z prezentovaných výsledků jsou patrné výhody a nevýhody jednotlivých přístupů a je možné zvolit danou metodu pro využití v různých aplikacích.
[popis_orig] => Pro měření mechanických vlastností oceli byla pro tento článek zvolena protlačovací zkouška tzv. „Small Punch test“ (dále jen SPT). Tato metoda je považována za nedestruktivní, protože jsou pro měření používány vzorky malých rozměrů, které je možné získat ze zkoumané součástky bez její významné destrukce. Tato metoda je při dodržení určitých předpokladů považována za ekvivalentní metodu s tahovou zkouškou. Pomocí této zkoušky je možné získat stejné parametry jako při provedení tahové zkoušky. Výsledkem měření metodou SPT je závislost síly na posunutí. Pro převod těchto závislostí se používají různé metody (grafické metody, empirické vztahy, numerické). Jednou z těchto metod je i metoda konečných prvků, která slouží k simulaci samotné protlačovací zkoušky a na základě změřené závislosti síly na posunutí se zjišťují potřebné koeficienty pro transformaci na křivku napětí v závislosti na přetvoření (elasto-plastická křivka). Tento článek je zaměřen na srovnání dvou způsobů hledání vhodných koeficientů pro transformaci změřených závislostí síly na posunutí pro danou ocel při zvýšených teplotách v prostředí Ansys Workbench. Pro hledání vhodné transformace byly uvažovány dva typy popisu chování materiálu (Ramberg-Osgood, Chaboche) a také dvě optimalizační techniky. První optimalizační technikou byla tzv. Screening metoda, která je součástí optimalizačního balíčku implementovaného přímo v prostředí Ansys Workbench. Druhou optimalizační technikou byl Genetický algoritmus, který byl implementován pomocí skriptovacího jazyku Python do prostředí Ansys Workbench. Z prezentovaných výsledků jsou patrné výhody a nevýhody jednotlivých přístupů a je možné zvolit danou metodu pro využití v různých aplikacích.
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[citace_text] => HRABOVSKÝ, J.; LOŠÁK, P.; HORSKÝ, J. Srovnání dvou optimalizačních metod při hledání materiálových parametrů pro protlačovací zkoušku. In Techsoft Engineering ANSYS 2013 Setkání uživatelů a konference. 1. Praha: ARCADEA, 2013. s. 55-62. ISBN: 978-80-905040-2-8.
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booktitle="Techsoft Engineering ANSYS 2013 Setkání uživatelů a konference",
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[nazev_en] => Comparison of two optimization methods for Small Punch Test material parameters estimation
[popis_en] => In this paper for the measurement of mechanical properties the Small Punch test method was chosen (SPT). This method is considered as non-destructive. The experimental samples for SPT have small dimension and therefore can be obtained from analyzed structure without significant destruction. While respecting certain assumptions this method can be considered as equivalent to tensile experimental procedure. By using this method it is possible to measure the same parameters as when using tensile test. The typical results of the SPT measurements are force-deflection curves. To convert force-deflection dependencies several methods can be carried out (graphical methods, empirical formulas, numerical). One of these methods is finite element method, which can be used to punch process simulation. Based on numerical simulation and measured force-deflection dependency material parameters can be obtained. The material parameters are necessary to transform force-deflection curve to stress-strain curve. This paper is focused on the comparison of two methods of determining suitable material parameters for transformation of the force-deflection curves for the define steel at elevated temperatures in Ansys Workbench. To determine appropriate transformation two types of material models (Ramberg-Osgood model, Chaboche model) and two optimization techniques were used. The first optimization technique was called the Screening method. This optimization method is a part of optimization toolbox implemented in Ansys Workbench. The second optimization technique was genetic algorithm, which was implemented by Python scripting language into Ansys Workbench. The presented results show the advantages and disadvantages of considered methods and it is possible to select the method for use in various applications.
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[title] => Výpočtová a experimentální analýza teplotního napjatosti profilového válce.
[typ] => PV
[year] => 2005
[id_vav] => 18152
)
[11] => Array
(
[quotations] => HORSKÝ, J.; KOTRBÁČEK, P.; PETRUŠKA, J.; ŘÍDKÝ, R.
[title] => Experimental Study of Semi Solid Steel Deformation
[typ] => PV
[year] => 2005
[id_vav] => 46135
)
[12] => Array
(
[quotations] => POHANKA, M.; HORSKÝ, J.; JURIGA, A.; PETRUŠKA, J.
[title] => Optimalizace chlazení kalibrovaných válců
[typ] => PX
[year] => 2007
[id_vav] => 63880
)
[13] => Array
(
[quotations] => HRABOVSKÝ, J.; LOŠÁK, P.; HORSKÝ, J.
[title] => ESTIMATION OF FRACTURE TOUGHNESS OF THE OXIDE SCALES
[typ] => PV
[year] => 2013
[id_vav] => 100595
)
[14] => Array
(
[quotations] => HRABOVSKÝ, J.; LOŠÁK, P.; HORSKÝ, J.
[title] => Srovnání dvou optimalizačních metod při hledání materiálových parametrů pro protlačovací zkoušku
[typ] => PV
[year] => 2013
[id_vav] => 100596
)
)
)