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[nazev] => Výsledky deformací a napětí v TEP kolene – varianta 1 (zatížení tlakem), Deformačně napěťové stavy v tumorózní TEP kolena, dvě geometrické varianty tibiální komponenty
[nazev_orig] => Výsledky deformací a napětí v TEP kolene – varianta 1 (zatížení tlakem), Deformačně napěťové stavy v tumorózní TEP kolena, dvě geometrické varianty tibiální komponenty
[duvernost_udaju_id] => C
[popis] => V rámci vědecko-výzkumné spolupráce mezi lékaři z Masarykovy univerzity, nemocnicí u Sv. Anny, firmou Beznoska a techniky z VUT je vyvíjena nová totální endoprotéza kolenního kloubu (VUT se zabývá výpočtovým modelováním). V druhé fázi této spolupráce byla provedena deformačně-napěťová analýza totální endoprotézy kolene.
[popis_orig] => V rámci vědecko-výzkumné spolupráce mezi lékaři z Masarykovy univerzity, nemocnicí u Sv. Anny, firmou Beznoska a techniky z VUT je vyvíjena nová totální endoprotéza kolenního kloubu (VUT se zabývá výpočtovým modelováním). V druhé fázi této spolupráce byla provedena deformačně-napěťová analýza totální endoprotézy kolene.
[klicova_slova] => metoda konečných prvků; TEP kolene; deformace; napětí
[klicova_slova_orig] => metoda konečných prvků; TEP kolene; deformace; napětí
[url] =>
[oecd_obor_id] =>
[odpovedny_utvar_id] => 157
[odpovedny_utvar_nazev] => Institute of Solid Mechanics, Mechatronics and Biomechanics
[odpovedny_utvar_zkratka] => ISMMB
[nadrazena_soucast_id] => 4
[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
[originalni_jazyk] => cs
[schvalil_id] => 1403
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[vycet_osob] => MARCIÁN, P.; JANÍČEK, P.
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[kategorie_nazev] => Results with impact on practice
[druh_nazev] => Summary research report
[druh_popis] => Summary research report
[stav] => Approved
[vysledek_kategorie_id] => PX
[vysledek_system_kategorie_id] => PU
[vysledek_stav_id] => 3
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[upravil] => Informační systém Automat
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[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
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[citace_text] => MARCIÁN, P.; JANÍČEK, P. Výsledky deformací a napětí v TEP kolene – varianta 1 (zatížení tlakem), Deformačně napěťové stavy v tumorózní TEP kolena, dvě geometrické varianty tibiální komponenty. 2014. 38 s.
[citace_html] => MARCIÁN, P.; JANÍČEK, P. Výsledky deformací a napětí v TEP kolene – varianta 1 (zatížení tlakem), Deformačně napěťové stavy v tumorózní TEP kolena, dvě geometrické varianty tibiální komponenty. 2014. 38 s.
[citace_rtf] =>
[citace_bibtex] => @misc{BUT113401,
author="Petr {Marcián} and Přemysl {Janíček}",
title="Výsledky deformací a napětí v TEP kolene – varianta 1 (zatížení tlakem), Deformačně napěťové stavy v tumorózní TEP kolena, dvě geometrické varianty tibiální komponenty",
year="2014",
pages="38",
note="Summary research report"
}
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[poznamka_metriky] =>
[nazev_en] => Stress-strain analysis of artificial knee joint
[popis_en] => On the basis of the scientific and research cooperation among BUT and Masaryk University and Saint Anne hospital is developing a new total knee arthroplasty (BUT - computational modeling). In the second phase of this cooperation was performed stress-strain analysis of artificial knee joint.
[klicova_slova_en] => finite element method; artificial knee joint; implant; strain; stress
[vysledek_datum] => 2014-12-17T00:00:00+01:00
)
[1] => Array
(
[vysledek_id] => 113443
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[nazev] => Výzkum odezvy trubkovnice parogenerátoru pro rychlé množivé reaktory na nestandardní provozní stavy
[nazev_orig] => Výzkum odezvy trubkovnice parogenerátoru pro rychlé množivé reaktory na nestandardní provozní stavy
[duvernost_udaju_id] => C
[popis] => Cílem projektu byla pevnostní analýza horní trubkovnice paragenerátoru. Pro výpočet bylo uvažováno několik provozních stavů nominálních a havarijních. Výpočtový model byl založen na metodě konečných prvků a pro řešení byl využit program ANSYS. Výsledky byly vyhodnoceny dle normy НОРМЫ РАСЧЕТА НА ПРОЧНОСТЬ ОБОРУДОВАНИЯ И ТРУБОПРОВОДОВ АТОМНЫХ ЭНЕРГЕТИЧЕСКИХ УСТАНОВОК ПНАЭ Г-7-002-86.
[popis_orig] => Cílem projektu byla pevnostní analýza horní trubkovnice paragenerátoru. Pro výpočet bylo uvažováno několik provozních stavů nominálních a havarijních. Výpočtový model byl založen na metodě konečných prvků a pro řešení byl využit program ANSYS. Výsledky byly vyhodnoceny dle normy НОРМЫ РАСЧЕТА НА ПРОЧНОСТЬ ОБОРУДОВАНИЯ И ТРУБОПРОВОДОВ АТОМНЫХ ЭНЕРГЕТИЧЕСКИХ УСТАНОВОК ПНАЭ Г-7-002-86.
[klicova_slova] => trubkovnice; reaktor; nestandardní provozní stavy
[klicova_slova_orig] => trubkovnice; reaktor; nestandardní provozní stavy
[url] =>
[oecd_obor_id] => 20301
[odpovedny_utvar_id] => 157
[odpovedny_utvar_nazev] => Institute of Solid Mechanics, Mechatronics and Biomechanics
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[originalni_jazyk] => cs
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[slozka_id] =>
[posledni_diagnostika] =>
[vycet_osob] => PETRUŠKA, J.; VLK, M.; NÁVRAT, T.; PEČ, M.; BENEŠOVSKÝ, M.
[pocet_tvurcu] => 5
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[poznamka] =>
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[zverejneno] => 1
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[posledni_autor] =>
[znamka] =>
[kategorie_nazev] => Results with impact on practice
[druh_nazev] => Summary research report
[druh_popis] => Summary research report
[stav] => Approved
[vysledek_kategorie_id] => PX
[vysledek_system_kategorie_id] => PU
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[citace_text] => PETRUŠKA, J.; VLK, M.; NÁVRAT, T.; PEČ, M.; BENEŠOVSKÝ, M. Výzkum odezvy trubkovnice parogenerátoru pro rychlé množivé reaktory na nestandardní provozní stavy. 2014. 70 s.
[citace_html] => PETRUŠKA, J.; VLK, M.; NÁVRAT, T.; PEČ, M.; BENEŠOVSKÝ, M. Výzkum odezvy trubkovnice parogenerátoru pro rychlé množivé reaktory na nestandardní provozní stavy. 2014. 70 s.
[citace_rtf] =>
[citace_bibtex] => @misc{BUT113443,
author="Jindřich {Petruška} and Miloš {Vlk} and Tomáš {Návrat} and Michal {Peč} and Marek {Benešovský}",
title="Výzkum odezvy trubkovnice parogenerátoru pro rychlé množivé reaktory na nestandardní provozní stavy",
year="2014",
pages="70",
note="Summary research report"
}
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[oecd_tree_oblast_id] => 20000
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[oecd_tree_obor_id] => 20300
[oecd_tree_obor_nazev] => 2.3 Mechanical engineering
[oecd_tree_podobor_id] => 20301
[oecd_tree_podobor_nazev] => Mechanical engineering
[poznamka_metriky] =>
[nazev_en] => Research of steam generator tube sheet to a nonstandard operating conditions
[popis_en] => The aim of the project was the strength analysis of the upper tube sheet. The nominal and the emergency operating modes were considered for analysis. The computational model was based on the finite element method and for simulation was used ANSYS program. The results were analyzed according to the norm НОРМЫ РАСЧЕТА НА ПРОЧНОСТЬ ОБОРУДОВАНИЯ И ТРУБОПРОВОДОВ АТОМНЫХ ЭНЕРГЕТИЧЕСКИХ УСТАНОВОК ПНАЭ Г-7-002-86.
[klicova_slova_en] => tube sheet; reactor; nonstandard operating conditions
[vysledek_datum] => 2014-08-22T00:00:00+02:00
)
[2] => Array
(
[vysledek_id] => 113444
[vysledek_druh_id] => V_SOUHRN
[ex_vysledek_id] => 113388
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[nazev] => Deformačně-napěťová analýza konstrukce rozvaděče 63 kA
[nazev_orig] => Deformačně-napěťová analýza konstrukce rozvaděče 63 kA
[duvernost_udaju_id] => C
[popis] => Cílem projektu byla simulace vzniku zkratu uvnitř prostorů a jeho vlivu na deformačně-napěťové chování konstrukce skříně pro 63 kA. Výpočtový model je založen na metodě konečných prvků a pro řešení je využit explicitní přístup. Výsledky řešení jsou verifikovány experimenty.
[popis_orig] => Cílem projektu byla simulace vzniku zkratu uvnitř prostorů a jeho vlivu na deformačně-napěťové chování konstrukce skříně pro 63 kA. Výpočtový model je založen na metodě konečných prvků a pro řešení je využit explicitní přístup. Výsledky řešení jsou verifikovány experimenty.
[klicova_slova] => deformačně-napěťová analýza; rozvaděčová skříň; zkrat
[klicova_slova_orig] => deformačně-napěťová analýza; rozvaděčová skříň; zkrat
[url] =>
[oecd_obor_id] => 20301
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[odpovedny_utvar_nazev] => Institute of Solid Mechanics, Mechatronics and Biomechanics
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[nadrazena_soucast_id] => 4
[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
[originalni_jazyk] => cs
[schvalil_id] => 1403
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[vykazovat_riv] => 1
[vykazovat_riv_zmeny] => 1
[slozka_id] =>
[posledni_diagnostika] =>
[vycet_osob] => NÁVRAT, T.; KUBÍK, P.; PETRUŠKA, J.; VOSYNEK, P.; PEČ, M.; BENEŠOVSKÝ, M.
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[kategorie_nazev] => Results with impact on practice
[druh_nazev] => Summary research report
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[stav] => Approved
[vysledek_kategorie_id] => PX
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[vlozil] => Informační systém Automat
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[ins_uid] => 999999
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[ins_ts] => 2025-09-22
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[citace_text] => NÁVRAT, T.; KUBÍK, P.; PETRUŠKA, J.; VOSYNEK, P.; PEČ, M.; BENEŠOVSKÝ, M. Deformačně-napěťová analýza konstrukce rozvaděče 63 kA. 2014. 35 s.
[citace_html] => NÁVRAT, T.; KUBÍK, P.; PETRUŠKA, J.; VOSYNEK, P.; PEČ, M.; BENEŠOVSKÝ, M. Deformačně-napěťová analýza konstrukce rozvaděče 63 kA. 2014. 35 s.
[citace_rtf] =>
[citace_bibtex] => @misc{BUT113444,
author="Tomáš {Návrat} and Petr {Kubík} and Jindřich {Petruška} and Petr {Vosynek} and Michal {Peč} and Marek {Benešovský}",
title="Deformačně-napěťová analýza konstrukce rozvaděče 63 kA",
year="2014",
pages="35",
note="Summary research report"
}
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[oecd_tree_podobor_id] => 20301
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[poznamka_metriky] =>
[nazev_en] => Strain-stress analysis of the switchgear 63 kA
[popis_en] => The aim of the project was a simulation of a short circuit inside the switchgear and assessment of stress-strain behavior of switchgear construction. The computational model is based on the finite element method and an explicit formulation is used for the solution. Results are verified by experiments.
[klicova_slova_en] => strain-stress analysis; switchgear; short circuit
[vysledek_datum] => 2014-11-10T00:00:00+01:00
)
[3] => Array
(
[vysledek_id] => 113466
[vysledek_druh_id] => V_SOUHRN
[ex_vysledek_id] => 113379
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[nazev] => Poradenství vývoj
[nazev_orig] => Poradenství vývoj
[duvernost_udaju_id] => C
[popis] => Poradenství a vývoj v oblasti signálového procesingu, metod zpracování měřených signálů, měření pnutí pomocí odporových tenzometrů a vývoje řídících jednotek.
[popis_orig] => Poradenství a vývoj v oblasti signálového procesingu, metod zpracování měřených signálů, měření pnutí pomocí odporových tenzometrů a vývoje řídících jednotek.
[klicova_slova] => signálový procesing; zpracování signálů; odporová tenzometrie
[klicova_slova_orig] => signálový procesing; zpracování signálů; odporová tenzometrie
[url] =>
[oecd_obor_id] => 20301
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[vykazovat_riv] => 1
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[slozka_id] =>
[posledni_diagnostika] =>
[vycet_osob] => GREPL, R.; KREJČÍ, P.; KREJSA, J.
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[kategorie_nazev] => Results with impact on practice
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[citace_html] => BURŠA, J.; POLZER, S.: Řídítka jízdního kola. (Prototyp)
[citace_rtf] =>
[citace_bibtex] => @misc{BUT113720,
author="Jiří {Burša} and Stanislav {Polzer}",
title="Řídítka jízdního kola",
year="2014",
note="Prototype"
}
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[nazev] => Fracture Mechanics Description of Crack Propagation in Ceramic Laminates
[nazev_orig] => Fracture Mechanics Description of Crack Propagation in Ceramic Laminates
[duvernost_udaju_id] => S
[popis] => The layered ceramic composites are in the interest of the researches, because of their improved fracture toughness, strength and reliability in comparison to monolithic ceramics. Multilayered design combines layers with differentmaterial properties and especially coefficients of thermal expansion. Due to this fact, during the sintering process, the high residual stresses appear in the laminate, which subsequently significantly influence the fracture behavior. The contribution is focused on the alumina-zirconia layered system with strong compressive residual stresses serving as a barrier for the crack propagation through the laminate body. Propagating crack can stay arrested in the compressive layer or is strongly deflected from the original direction of crack propagation. It leads to the higher value of so-called apparent fracture toughness of the ceramic laminate. The assumptions of the linear elastic fracture mechanics and small scale yielding condition are considered in the contribution for the description of the crack propagation. The stress field is obtained numerically by using the finite element method.Thetheory based on strain energy density factor was used for determination of the crack behavior. The work contributes to the better understanding of failure process of ceramic laminates.
[popis_orig] => The layered ceramic composites are in the interest of the researches, because of their improved fracture toughness, strength and reliability in comparison to monolithic ceramics. Multilayered design combines layers with differentmaterial properties and especially coefficients of thermal expansion. Due to this fact, during the sintering process, the high residual stresses appear in the laminate, which subsequently significantly influence the fracture behavior. The contribution is focused on the alumina-zirconia layered system with strong compressive residual stresses serving as a barrier for the crack propagation through the laminate body. Propagating crack can stay arrested in the compressive layer or is strongly deflected from the original direction of crack propagation. It leads to the higher value of so-called apparent fracture toughness of the ceramic laminate. The assumptions of the linear elastic fracture mechanics and small scale yielding condition are considered in the contribution for the description of the crack propagation. The stress field is obtained numerically by using the finite element method.Thetheory based on strain energy density factor was used for determination of the crack behavior. The work contributes to the better understanding of failure process of ceramic laminates.
[klicova_slova] => Ceramic laminate, residual stresses, crack propagation direction, strain energy density factor.
[klicova_slova_orig] => Ceramic laminate, residual stresses, crack propagation direction, strain energy density factor.
[url] =>
[oecd_obor_id] => 20306
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[odpovedny_utvar_nazev] => Institute of Solid Mechanics, Mechatronics and Biomechanics
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[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
[originalni_jazyk] => en
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[identifikator] => ISBN 978-80-01-05708-7
[identifikator_popis] => ISBN - APPLIED MECHANICS 2015 – Book of Abstracts
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[citace_text] => ŠTEGNEROVÁ, K.; NÁHLÍK, L.; HUTAŘ, P. Fracture Mechanics Description of Crack Propagation in Ceramic Laminates. APPLIED MECHANICS 2015 – Book of Abstracts. Thákurova 1, Praha 6: Česká technika – Nakladatelství ČVUT, 2015. p. 69-70. ISBN: 978-80-01-05708-7.
[citace_html] => ŠTEGNEROVÁ, K.; NÁHLÍK, L.; HUTAŘ, P. Fracture Mechanics Description of Crack Propagation in Ceramic Laminates. APPLIED MECHANICS 2015 – Book of Abstracts. Thákurova 1, Praha 6: Česká technika – Nakladatelství ČVUT, 2015. p. 69-70. ISBN: 978-80-01-05708-7.
[citace_rtf] =>
[citace_bibtex] => @misc{BUT114426,
author="Kateřina {Štegnerová} and Luboš {Náhlík} and Pavel {Hutař}",
title="Fracture Mechanics Description of Crack Propagation in Ceramic Laminates
",
booktitle="APPLIED MECHANICS 2015 – Book of Abstracts",
year="2015",
edition="1",
pages="69--70",
publisher="Česká technika – Nakladatelství ČVUT",
address="Thákurova 1, Praha 6",
isbn="978-80-01-05708-7",
note="Abstract"
}
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[nazev_en] => Fracture Mechanics Description of Crack Propagation in Ceramic Laminates
[popis_en] => The layered ceramic composites are in the interest of the researches, because of their improved fracture toughness, strength and reliability in comparison to monolithic ceramics. Multilayered design combines layers with differentmaterial properties and especially coefficients of thermal expansion. Due to this fact, during the sintering process, the high residual stresses appear in the laminate, which subsequently significantly influence the fracture behavior. The contribution is focused on the alumina-zirconia layered system with strong compressive residual stresses serving as a barrier for the crack propagation through the laminate body. Propagating crack can stay arrested in the compressive layer or is strongly deflected from the original direction of crack propagation. It leads to the higher value of so-called apparent fracture toughness of the ceramic laminate. The assumptions of the linear elastic fracture mechanics and small scale yielding condition are considered in the contribution for the description of the crack propagation. The stress field is obtained numerically by using the finite element method.Thetheory based on strain energy density factor was used for determination of the crack behavior. The work contributes to the better understanding of failure process of ceramic laminates.
[klicova_slova_en] => Ceramic laminate, residual stresses, crack propagation direction, strain energy density factor.
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[nazev] => Multidisciplinary Multi-Body Modeling of Machine Tools
[nazev_orig] => Multidisciplinary Multi-Body Modeling of Machine Tools
[duvernost_udaju_id] => S
[popis] => This paper deals with a multi-body modeling of machine tools with actuators. The aim of this paper is demonstration of a multibody dynamics during design process of the machine tool and choice of an optimal actuator. The modern machine tool is a mechatronic system and usage of simulation modeling is a necessary step in the development process. The model-based design of the several modern machine tool assemblies is presented in this paper. This modeling technique can be used to determine the force of interactions of individual machine parts, dimensional drives, modal and harmonic analysis, etc.
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[klicova_slova] => multi-body model, machine tool, actuator, control, mechatronics
[klicova_slova_orig] => multi-body model, machine tool, actuator, control, mechatronics
[url] =>
[oecd_obor_id] => 20301
[odpovedny_utvar_id] => 183
[odpovedny_utvar_nazev] => Institute of Production Machines, Systems and Robotics
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[vycet_osob] => VETIŠKA, J.; HADAŠ, Z.; HOLUB, M.
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[ins_ts] => 2025-09-22
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[status] => 9
[identifikator] => ISBN 978-80-86246-42-0
[identifikator_popis] => ISBN - Engineering mechanics 2015 - extended abstracts
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[citace_text] => VETIŠKA, J.; HADAŠ, Z.; HOLUB, M. Multidisciplinary Multi-Body Modeling of Machine Tools. In Engineering mechanics 2015 - extended abstracts. 2015. p. 344-345. ISBN: 978-80-86246-42-0.
[citace_html] => VETIŠKA, J.; HADAŠ, Z.; HOLUB, M. Multidisciplinary Multi-Body Modeling of Machine Tools. In Engineering mechanics 2015 - extended abstracts. 2015. p. 344-345. ISBN: 978-80-86246-42-0.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT114702,
author="Jan {Vetiška} and Zdeněk {Hadaš} and Michal {Holub}",
title="Multidisciplinary Multi-Body Modeling of Machine Tools",
booktitle="Engineering mechanics 2015 - extended abstracts",
year="2015",
pages="344--345",
isbn="978-80-86246-42-0"
}
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[nazev_en] => Multidisciplinary Multi-Body Modeling of Machine Tools
[popis_en] => This paper deals with a multi-body modeling of machine tools with actuators. The aim of this paper is demonstration of a multibody dynamics during design process of the machine tool and choice of an optimal actuator. The modern machine tool is a mechatronic system and usage of simulation modeling is a necessary step in the development process. The model-based design of the several modern machine tool assemblies is presented in this paper. This modeling technique can be used to determine the force of interactions of individual machine parts, dimensional drives, modal and harmonic analysis, etc.
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(
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[nazev] => Automatic Evaluation of Collagen Fiber Directions from Polarized Light Microscopy Images
[nazev_orig] => Automatic Evaluation of Collagen Fiber Directions from Polarized Light Microscopy Images
[duvernost_udaju_id] => S
[popis] => Mechanical properties of the arterial wall depend largely on orientation and density of collagen fiber bundles. Several methods have been developed for observation of collagen orientation and density; the most frequently applied collagen-specific manual approach is based on polarized light (PL). However, it is very time consuming and the results are operator dependent. We have proposed a new automated method for evaluation of collagen fiber direction from two-dimensional polarized light microscopy images (2D PLM). The algorithm has been verified against artificial images and validated against manual measurements. Finally the collagen content has been estimated. The proposed algorithm was capable of estimating orientation of some 35 k points in 15 min when applied to aortic tissue and over 500 k points in 35 min for Achilles tendon. The average angular disagreement between each operator and the algorithm was -9.3±8.6° and -3.8±8.6° in the case of aortic tissue and -1.6±6.4° and 2.6±7.8° for Achilles tendon. Estimated mean collagen content was 30.3±5.8% and 94.3±2.7% for aortic media and Achilles tendon, respectively. The proposed automated approach is operator independent and several orders faster than manual measurements and therefore has the potential to replace manual measurements of collagen orientation via PLM.
[popis_orig] => Mechanical properties of the arterial wall depend largely on orientation and density of collagen fiber bundles. Several methods have been developed for observation of collagen orientation and density; the most frequently applied collagen-specific manual approach is based on polarized light (PL). However, it is very time consuming and the results are operator dependent. We have proposed a new automated method for evaluation of collagen fiber direction from two-dimensional polarized light microscopy images (2D PLM). The algorithm has been verified against artificial images and validated against manual measurements. Finally the collagen content has been estimated. The proposed algorithm was capable of estimating orientation of some 35 k points in 15 min when applied to aortic tissue and over 500 k points in 35 min for Achilles tendon. The average angular disagreement between each operator and the algorithm was -9.3±8.6° and -3.8±8.6° in the case of aortic tissue and -1.6±6.4° and 2.6±7.8° for Achilles tendon. Estimated mean collagen content was 30.3±5.8% and 94.3±2.7% for aortic media and Achilles tendon, respectively. The proposed automated approach is operator independent and several orders faster than manual measurements and therefore has the potential to replace manual measurements of collagen orientation via PLM.
[klicova_slova] => collagen fiber orientation; image analysis; phase correlation; polarized light microscopy
[klicova_slova_orig] => collagen fiber orientation; image analysis; phase correlation; polarized light microscopy
[url] => http://journals.cambridge.org/repo_S962LC6D3IMqvA
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[citace_text] => NOVÁK, K.; POLZER, S.; TICHÝ,M.; BURŠA, J. Automatic Evaluation of Collagen Fiber Directions from Polarized Light Microscopy Images. MICROSCOPY AND MICROANALYSIS, 2015, vol. 21, no. 4, p. 863-875. ISSN: 1431-9276.
[citace_html] => NOVÁK, K.; POLZER, S.; TICHÝ,M.; BURŠA, J. Automatic Evaluation of Collagen Fiber Directions from Polarized Light Microscopy Images. MICROSCOPY AND MICROANALYSIS, 2015, vol. 21, no. 4, p. 863-875. ISSN: 1431-9276.
[citace_rtf] =>
[citace_bibtex] => @article{BUT114756,
author="Kamil {Novák} and Stanislav {Polzer} and Jiří {Burša} and Michal {Tichý}",
title="Automatic Evaluation of Collagen Fiber Directions from Polarized Light Microscopy Images",
journal="MICROSCOPY AND MICROANALYSIS",
year="2015",
volume="21",
number="4",
pages="863--875",
doi="10.1017/S1431927615000586",
issn="1431-9276",
url="http://journals.cambridge.org/repo_S962LC6D3IMqvA"
}
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[nazev_en] => Automatic Evaluation of Collagen Fiber Directions from Polarized Light Microscopy Images
[popis_en] => Mechanical properties of the arterial wall depend largely on orientation and density of collagen fiber bundles. Several methods have been developed for observation of collagen orientation and density; the most frequently applied collagen-specific manual approach is based on polarized light (PL). However, it is very time consuming and the results are operator dependent. We have proposed a new automated method for evaluation of collagen fiber direction from two-dimensional polarized light microscopy images (2D PLM). The algorithm has been verified against artificial images and validated against manual measurements. Finally the collagen content has been estimated. The proposed algorithm was capable of estimating orientation of some 35 k points in 15 min when applied to aortic tissue and over 500 k points in 35 min for Achilles tendon. The average angular disagreement between each operator and the algorithm was -9.3±8.6° and -3.8±8.6° in the case of aortic tissue and -1.6±6.4° and 2.6±7.8° for Achilles tendon. Estimated mean collagen content was 30.3±5.8% and 94.3±2.7% for aortic media and Achilles tendon, respectively. The proposed automated approach is operator independent and several orders faster than manual measurements and therefore has the potential to replace manual measurements of collagen orientation via PLM.
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[citace_text] => LEGUILLON, D.; MARTIN, É.; ŠEVEČEK, O.; BERMEJO, R. Application of the coupled stress-energy criterion to predict the fracture behaviour of layered ceramics designed with internal compressive stresses. European journal of mechanics, A, Solids, 2015, vol. 2015, no. 54, p. 94-104. ISSN: 0997-7538.
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[nazev_en] => Estimation of crack behaviour in the ceramic laminate with strong interfaces
[popis_en] => The contribution deals with a description of the specific crack behaviour in the layered alumina-zirconia ceramic laminate. The main aim is to clarify crack behaviour in the compressive layer and provide computational tools for estimation of crack behaviour in the field of strong residual stresses. The crack propagation was investigated on the basis of linear elastic fracture mechanics. Fracture parameters were computed numerically. Finite element models were developed in order to obtain a stress distribution in the laminate containing a crack and to simulate crack propagation. The sharp change of the crack propagation direction was estimated using criterion based on the strain energy density factor. Generalized linear elastic fracture mechanics was applied in the case of crack touching the material interface. Estimated crack behaviour is qualitatively in a good agreement with experimental observations.
[klicova_slova_en] => Layered ceramic composites, residual stresses, crack propagation, strain energy density factor.
[vysledek_datum] => 2015-07-31T00:00:00+02:00
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[n_pages] => 241
[pagelen] => 15
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[quotations] => MARCIÁN, P.; JANÍČEK, P.
[title] => Výsledky deformací a napětí v TEP kolene – varianta 1 (zatížení tlakem), Deformačně napěťové stavy v tumorózní TEP kolena, dvě geometrické varianty tibiální komponenty
[typ] => PX
[year] => 2014
[id_vav] => 113401
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[1] => Array
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[quotations] => PETRUŠKA, J.; VLK, M.; NÁVRAT, T.; PEČ, M.; BENEŠOVSKÝ, M.
[title] => Výzkum odezvy trubkovnice parogenerátoru pro rychlé množivé reaktory na nestandardní provozní stavy
[typ] => PX
[year] => 2014
[id_vav] => 113443
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[quotations] => NÁVRAT, T.; KUBÍK, P.; PETRUŠKA, J.; VOSYNEK, P.; PEČ, M.; BENEŠOVSKÝ, M.
[title] => Deformačně-napěťová analýza konstrukce rozvaděče 63 kA
[typ] => PX
[year] => 2014
[id_vav] => 113444
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[quotations] => GREPL, R.; KREJČÍ, P.; KREJSA, J.
[title] => Poradenství vývoj
[typ] => PX
[year] => 2014
[id_vav] => 113466
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[quotations] => GREPL, R.; CHALUPA, J.; SOVA, V.
[title] => Výzkum bezdrátového modulu pro měření vibrací ložisek
[typ] => PX
[year] => 2014
[id_vav] => 113467
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[quotations] => VEJLUPEK, J.; GREPL, R.; KREJČÍ, P.
[title] => Testovací jednotka
[typ] => PX
[year] => 2014
[id_vav] => 113468
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[quotations] => KLIMEŠ, D.; GREPL, R.; VEJLUPEK, J.; CHALUPA, J.; SOVA, V.; SPÁČIL, T.
[title] => Vývoj zkušebního stavu
[typ] => PX
[year] => 2014
[id_vav] => 113469
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[quotations] => BURŠA, J.; POLZER, S.
[title] => Řídítka jízdního kola
[typ] => AV
[year] => 2014
[id_vav] => 113720
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[quotations] => ŠTEGNEROVÁ, K.; NÁHLÍK, L.; HUTAŘ, P.
[title] => Fracture Mechanics Description of Crack Propagation in Ceramic Laminates
[typ] => PV
[year] => 2015
[id_vav] => 114426
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[quotations] => VETIŠKA, J.; HADAŠ, Z.; HOLUB, M.
[title] => Multidisciplinary Multi-Body Modeling of Machine Tools
[typ] => PV
[year] => 2015
[id_vav] => 114702
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[quotations] => NOVÁK, K.; POLZER, S.; TICHÝ,M.; BURŠA, J.
[title] => Automatic Evaluation of Collagen Fiber Directions from Polarized Light Microscopy Images
[typ] => PV
[year] => 2015
[id_vav] => 114756
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[quotations] => LEGUILLON, D.; MARTIN, É.; ŠEVEČEK, O.; BERMEJO, R.
[title] => Application of the coupled stress-energy criterion to predict the fracture behaviour of layered ceramics designed with internal compressive stresses
[typ] => PV
[year] => 2015
[id_vav] => 115339
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[quotations] => ŠTEGNEROVÁ, K.; NÁHLÍK, L.; HUTAŘ, P.
[title] => Description of strengthening mechanism in layered ceramic composites
[typ] => PV
[year] => 2015
[id_vav] => 115362
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[quotations] => ŠTEGNEROVÁ, K.; NÁHLÍK, L.; HUTAŘ, P.
[title] => Estimation of crack behaviour in the ceramic laminate with strong interfaces
[typ] => PV
[year] => 2015
[id_vav] => 115363
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