TY  - CONF
AU  - Duta, Alina
AU  - Geonea, Ionut-Daniel
AU  - Jeli, Zorana
AU  - Sass, Ludmila
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5604
AB  - This paper is a result of plenty researches on dynamic of the process on FD320A milling machine. We try to propose also a method for determination of the displacement for the contact surface using an analysis with finite elements. Before this, an important problem is achievement a model with finite elements that must be the best approximation of the tool-machine structure on one hand, and on the other is how to make the geometric model for the contact surface. We collected also some experimental data. Theoretical studies are near to the experimental data, registered with an acquisition system sets on the shaft’s slides of the final elements for the milling machine. We made a dynamic analysis with variable forces; being well known that the vibrations appeared may cause large displacements and severe stresses in the concrete situations. The analysis proves that the displacements are in admissible limits and have not major influences on the quality of the processing surfaces.
PB  - SUGIG
C3  - 7th International Conference moNGeometrija, focused on the research about geometry, graphics and application to science, engineering and art
T1  - Geometry Of Simulation Of The Contact Surface Between The Hobbing Cutter And The Wheel On An Fd320a Milling Machine
EP  - 228
SP  - 217
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5604
ER  - 

@conference{
author = "Duta, Alina and Geonea, Ionut-Daniel and Jeli, Zorana and Sass, Ludmila",
year = "2020",
abstract = "This paper is a result of plenty researches on dynamic of the process on FD320A milling machine. We try to propose also a method for determination of the displacement for the contact surface using an analysis with finite elements. Before this, an important problem is achievement a model with finite elements that must be the best approximation of the tool-machine structure on one hand, and on the other is how to make the geometric model for the contact surface. We collected also some experimental data. Theoretical studies are near to the experimental data, registered with an acquisition system sets on the shaft’s slides of the final elements for the milling machine. We made a dynamic analysis with variable forces; being well known that the vibrations appeared may cause large displacements and severe stresses in the concrete situations. The analysis proves that the displacements are in admissible limits and have not major influences on the quality of the processing surfaces.",
publisher = "SUGIG",
journal = "7th International Conference moNGeometrija, focused on the research about geometry, graphics and application to science, engineering and art",
title = "Geometry Of Simulation Of The Contact Surface Between The Hobbing Cutter And The Wheel On An Fd320a Milling Machine",
pages = "228-217",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5604"
}

Duta, A., Geonea, I., Jeli, Z.,& Sass, L.. (2020). Geometry Of Simulation Of The Contact Surface Between The Hobbing Cutter And The Wheel On An Fd320a Milling Machine. in 7th International Conference moNGeometrija, focused on the research about geometry, graphics and application to science, engineering and art
SUGIG., 217-228.
https://hdl.handle.net/21.15107/rcub_machinery_5604

Duta A, Geonea I, Jeli Z, Sass L. Geometry Of Simulation Of The Contact Surface Between The Hobbing Cutter And The Wheel On An Fd320a Milling Machine. in 7th International Conference moNGeometrija, focused on the research about geometry, graphics and application to science, engineering and art. 2020;:217-228.
https://hdl.handle.net/21.15107/rcub_machinery_5604 .

Duta, Alina, Geonea, Ionut-Daniel, Jeli, Zorana, Sass, Ludmila, "Geometry Of Simulation Of The Contact Surface Between The Hobbing Cutter And The Wheel On An Fd320a Milling Machine" in 7th International Conference moNGeometrija, focused on the research about geometry, graphics and application to science, engineering and art (2020):217-228,
https://hdl.handle.net/21.15107/rcub_machinery_5604 .

TY  - JOUR
AU  - Kosić, Boris
AU  - Stojićević, Miša
AU  - Jeli, Zorana
AU  - Pokonstantinović, Branislav
AU  - Duta, Alina
AU  - Dragičević, Aleksandra
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3122
AB  - Ovaj rad istražuje uticaj različitih geometrijskih struktura na nove koncepte formiranja tehničkih sistema. Sposobnost da neke geometrijske strukture budu u stanju da izdrže određeni nivo deformacije, koristilo se za zamenu zglobova u određenim sklopovima tehničkih sistema. Sada sva ta kretanja mogu da se postignu deformacijom geometrijskih struktura. Dobijeni rezultati iz simulacija, definišu nivo deformacije koje strukture mogu izdržati. Projektovanje 3D modela i simulacija sprovedeno je u SoildWorks 2016. U okviru ovog rada ispitano je nekoliko različitih struktura metamaterijala. Izvršene su 64 simulacije promenom unutrašnje strukture, debljine i orijentacije metamaterijala. Za svaki simulaciju kao rezyltat su dobijani naponi i pomeranja. Pored toga, izvršena je simulacija tri modela klješta, u kojima su upotrebljeni meta-materijali ispitivane geometrije, a rezultati su upoređeni sa rezultatima prethodnih simulacija.
AB  - This paper investigates the influence of different geometrical structures on new concepts for the formation of technical systems. The ability of some geometric structures to withstand a certain level of deformation, was used to replace joints in certain assemblies of technical systems. Now, all movements are accomplished with deformation of geometrical structures. Obtained results from simulations define the level of deformation which structures can withstand. Designing of 3D models and simulations were conducted in SOLIDWORKS 2016. Several different structures of metamaterials will be examined. Sixty-four simulations were conducted by changing the internal structure, thickness and orientation of metamaterials. For each simulation, the results were presented as stresses and displacements. Additionally, three model of pliers have been simulated, and its results were compared with the results from previous simulations.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - 3D analiza različne geometrije metamaterijala i simulacije upotrebe metamaterijala takvih geometrija
T1  - 3D analysis of different metamaterial geometry and simulation of metamaterial usage
EP  - 354
IS  - 2
SP  - 349
VL  - 47
DO  - 10.5937/fmet1902349K
ER  - 

@article{
author = "Kosić, Boris and Stojićević, Miša and Jeli, Zorana and Pokonstantinović, Branislav and Duta, Alina and Dragičević, Aleksandra",
year = "2019",
abstract = "Ovaj rad istražuje uticaj različitih geometrijskih struktura na nove koncepte formiranja tehničkih sistema. Sposobnost da neke geometrijske strukture budu u stanju da izdrže određeni nivo deformacije, koristilo se za zamenu zglobova u određenim sklopovima tehničkih sistema. Sada sva ta kretanja mogu da se postignu deformacijom geometrijskih struktura. Dobijeni rezultati iz simulacija, definišu nivo deformacije koje strukture mogu izdržati. Projektovanje 3D modela i simulacija sprovedeno je u SoildWorks 2016. U okviru ovog rada ispitano je nekoliko različitih struktura metamaterijala. Izvršene su 64 simulacije promenom unutrašnje strukture, debljine i orijentacije metamaterijala. Za svaki simulaciju kao rezyltat su dobijani naponi i pomeranja. Pored toga, izvršena je simulacija tri modela klješta, u kojima su upotrebljeni meta-materijali ispitivane geometrije, a rezultati su upoređeni sa rezultatima prethodnih simulacija., This paper investigates the influence of different geometrical structures on new concepts for the formation of technical systems. The ability of some geometric structures to withstand a certain level of deformation, was used to replace joints in certain assemblies of technical systems. Now, all movements are accomplished with deformation of geometrical structures. Obtained results from simulations define the level of deformation which structures can withstand. Designing of 3D models and simulations were conducted in SOLIDWORKS 2016. Several different structures of metamaterials will be examined. Sixty-four simulations were conducted by changing the internal structure, thickness and orientation of metamaterials. For each simulation, the results were presented as stresses and displacements. Additionally, three model of pliers have been simulated, and its results were compared with the results from previous simulations.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "3D analiza različne geometrije metamaterijala i simulacije upotrebe metamaterijala takvih geometrija, 3D analysis of different metamaterial geometry and simulation of metamaterial usage",
pages = "354-349",
number = "2",
volume = "47",
doi = "10.5937/fmet1902349K"
}

Kosić, B., Stojićević, M., Jeli, Z., Pokonstantinović, B., Duta, A.,& Dragičević, A.. (2019). 3D analiza različne geometrije metamaterijala i simulacije upotrebe metamaterijala takvih geometrija. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 47(2), 349-354.
https://doi.org/10.5937/fmet1902349K

Kosić B, Stojićević M, Jeli Z, Pokonstantinović B, Duta A, Dragičević A. 3D analiza različne geometrije metamaterijala i simulacije upotrebe metamaterijala takvih geometrija. in FME Transactions. 2019;47(2):349-354.
doi:10.5937/fmet1902349K .

Kosić, Boris, Stojićević, Miša, Jeli, Zorana, Pokonstantinović, Branislav, Duta, Alina, Dragičević, Aleksandra, "3D analiza različne geometrije metamaterijala i simulacije upotrebe metamaterijala takvih geometrija" in FME Transactions, 47, no. 2 (2019):349-354,
https://doi.org/10.5937/fmet1902349K . .

TY  - JOUR
AU  - Jeli, Zorana
AU  - Stojićević, Miša
AU  - Cvetković, Ivana
AU  - Duta, Alina
AU  - Popa, Dragos-Laurentiu
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2662
AB  - Ovaj rad se bavi problematikom geometrijskih karakteristika satelitske antene i uticajem tih karakteristika na funkcionalnost i bezbednost. U okviru rada je izvršeno formiranje određenog broja 3D modela satelitske antene. Svi modeli su formirani u softverskom programu SolidWorks, i u istom programskom paketu izvršene su analize opstrujavanja vazduha oko antene za uslove na teritoriji grada Beograda. Analizom modela došlo se do zaključka kao bi bilo najsvrsishodnije prilagoditi geometrijske karakteristike satelitske antene da bi konačan proizvod ispunjavao funkcionalne i bezbednosne zahteve. Analiza je bazirana na laboratorijskim ispitivanjima, koja su sprovedena na satelitskim antenama. Tom prilikom došlo se do zaključka da geometrijske karakteristike same antene u velikoj meri utiču na funkcionalnost i bezbednost proizvoda. Radi jednostavnijeg i, u krajnjoj meri, finansijski opravdanijeg pristupa izradi konačnog proizvoda-satelitske antene, osnovna analiza je izvršena na 3D modelima, na kojima su rađene promene geometrijskih karakteristika. Modeli su analizirani i dobijeno je optimalno rešenje, od koga može da se napravi konačan proizvod. Rad pokazuje opravdanost formiranja 3D modela, njegove analize i pokazuje jednostavnost promene geometrije proizvoda. U veoma velikoj meri dobija se konačni proizvod koji je ispitan u uslovima bliskim realnom sistemu u kom proizvod treba da funkcioniše.
AB  - This paper deals with the geometrical characteristics and their influence on the functionality and safety of satellite dishes. Within the paper, a number of 3D models of satellite dishes were formed. All models were established in the software program SolidWorks, and the same software package was used for the analysis of the air flow over the satellite antenna for the conditions at the territory of Belgrade. The analysis of the model provides an insight into the geometrical characteristics of the satellite dishes which would be the most appropriate to adopt in accordance with the requirements of the final product functionality and security. The analysis is based on laboratory tests, which were conducted on satellite dishes. On that occasion, it was concluded that the geometrical characteristics of the antenna itself greatly affect the functionality and safety. In order to simplify and to make a better financial approach to designing the final product-satellite dish, a basic analysis was carried out on the 3D models whose geometric characteristics can be changed . The models were analyzed to yield an optimal solution, since it is possible to get the final product. The paper justifies forming a 3D model and analysing it, and shows the simplicity of the product geometry changes. The obtained final product is to a very large extent functional since it has been tested in the conditions - +-close to the real system where the product should operate.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - 3D analiza geometrijskih faktora i njihovo uticanje na opstrujavanje vazduha oko satelitske antene
T1  - A 3D analysis of geometrical factors and their influence on air flow around a satellite dish
EP  - 267
IS  - 2
SP  - 262
VL  - 45
DO  - 10.5937/fmet1702262J
ER  - 

@article{
author = "Jeli, Zorana and Stojićević, Miša and Cvetković, Ivana and Duta, Alina and Popa, Dragos-Laurentiu",
year = "2017",
abstract = "Ovaj rad se bavi problematikom geometrijskih karakteristika satelitske antene i uticajem tih karakteristika na funkcionalnost i bezbednost. U okviru rada je izvršeno formiranje određenog broja 3D modela satelitske antene. Svi modeli su formirani u softverskom programu SolidWorks, i u istom programskom paketu izvršene su analize opstrujavanja vazduha oko antene za uslove na teritoriji grada Beograda. Analizom modela došlo se do zaključka kao bi bilo najsvrsishodnije prilagoditi geometrijske karakteristike satelitske antene da bi konačan proizvod ispunjavao funkcionalne i bezbednosne zahteve. Analiza je bazirana na laboratorijskim ispitivanjima, koja su sprovedena na satelitskim antenama. Tom prilikom došlo se do zaključka da geometrijske karakteristike same antene u velikoj meri utiču na funkcionalnost i bezbednost proizvoda. Radi jednostavnijeg i, u krajnjoj meri, finansijski opravdanijeg pristupa izradi konačnog proizvoda-satelitske antene, osnovna analiza je izvršena na 3D modelima, na kojima su rađene promene geometrijskih karakteristika. Modeli su analizirani i dobijeno je optimalno rešenje, od koga može da se napravi konačan proizvod. Rad pokazuje opravdanost formiranja 3D modela, njegove analize i pokazuje jednostavnost promene geometrije proizvoda. U veoma velikoj meri dobija se konačni proizvod koji je ispitan u uslovima bliskim realnom sistemu u kom proizvod treba da funkcioniše., This paper deals with the geometrical characteristics and their influence on the functionality and safety of satellite dishes. Within the paper, a number of 3D models of satellite dishes were formed. All models were established in the software program SolidWorks, and the same software package was used for the analysis of the air flow over the satellite antenna for the conditions at the territory of Belgrade. The analysis of the model provides an insight into the geometrical characteristics of the satellite dishes which would be the most appropriate to adopt in accordance with the requirements of the final product functionality and security. The analysis is based on laboratory tests, which were conducted on satellite dishes. On that occasion, it was concluded that the geometrical characteristics of the antenna itself greatly affect the functionality and safety. In order to simplify and to make a better financial approach to designing the final product-satellite dish, a basic analysis was carried out on the 3D models whose geometric characteristics can be changed . The models were analyzed to yield an optimal solution, since it is possible to get the final product. The paper justifies forming a 3D model and analysing it, and shows the simplicity of the product geometry changes. The obtained final product is to a very large extent functional since it has been tested in the conditions - +-close to the real system where the product should operate.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "3D analiza geometrijskih faktora i njihovo uticanje na opstrujavanje vazduha oko satelitske antene, A 3D analysis of geometrical factors and their influence on air flow around a satellite dish",
pages = "267-262",
number = "2",
volume = "45",
doi = "10.5937/fmet1702262J"
}

Jeli, Z., Stojićević, M., Cvetković, I., Duta, A.,& Popa, D.. (2017). 3D analiza geometrijskih faktora i njihovo uticanje na opstrujavanje vazduha oko satelitske antene. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 45(2), 262-267.
https://doi.org/10.5937/fmet1702262J

Jeli Z, Stojićević M, Cvetković I, Duta A, Popa D. 3D analiza geometrijskih faktora i njihovo uticanje na opstrujavanje vazduha oko satelitske antene. in FME Transactions. 2017;45(2):262-267.
doi:10.5937/fmet1702262J .

Jeli, Zorana, Stojićević, Miša, Cvetković, Ivana, Duta, Alina, Popa, Dragos-Laurentiu, "3D analiza geometrijskih faktora i njihovo uticanje na opstrujavanje vazduha oko satelitske antene" in FME Transactions, 45, no. 2 (2017):262-267,
https://doi.org/10.5937/fmet1702262J . .

TY  - JOUR
AU  - Duta, Alina
AU  - Sass, Ludmila
AU  - Jeli, Zorana
AU  - Marinescu, Gabriel-Catalin
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5690
AB  - The present paper puts forward a method applied to determine the static analysis and the stress of a two-level building, via an analysis with finite elements for building construction domain. Prior to this, we shall deal with a strategic issue, i.e. the achievement of a model with finite elements to validate the best approximation for the building structure. The method endorsed comes to replace the mathematical model, which is more complicated. However, a central issue that has to be dealt with before determining the displacements and the stress analysis is the achievement of the model with finite elements, as the best approximation of the building structure.
PB  - Bucureşti: Sorging
T2  - Journal of Industrial Design and Engineering Graphics
T1  - Modelling And Simulation Matters Upon The Static Analysis Of A Building
EP  - 104
SP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5690
ER  - 

@article{
author = "Duta, Alina and Sass, Ludmila and Jeli, Zorana and Marinescu, Gabriel-Catalin",
year = "2017",
abstract = "The present paper puts forward a method applied to determine the static analysis and the stress of a two-level building, via an analysis with finite elements for building construction domain. Prior to this, we shall deal with a strategic issue, i.e. the achievement of a model with finite elements to validate the best approximation for the building structure. The method endorsed comes to replace the mathematical model, which is more complicated. However, a central issue that has to be dealt with before determining the displacements and the stress analysis is the achievement of the model with finite elements, as the best approximation of the building structure.",
publisher = "Bucureşti: Sorging",
journal = "Journal of Industrial Design and Engineering Graphics",
title = "Modelling And Simulation Matters Upon The Static Analysis Of A Building",
pages = "104-101",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5690"
}

Duta, A., Sass, L., Jeli, Z.,& Marinescu, G.. (2017). Modelling And Simulation Matters Upon The Static Analysis Of A Building. in Journal of Industrial Design and Engineering Graphics
Bucureşti: Sorging., 101-104.
https://hdl.handle.net/21.15107/rcub_machinery_5690

Duta A, Sass L, Jeli Z, Marinescu G. Modelling And Simulation Matters Upon The Static Analysis Of A Building. in Journal of Industrial Design and Engineering Graphics. 2017;:101-104.
https://hdl.handle.net/21.15107/rcub_machinery_5690 .

Duta, Alina, Sass, Ludmila, Jeli, Zorana, Marinescu, Gabriel-Catalin, "Modelling And Simulation Matters Upon The Static Analysis Of A Building" in Journal of Industrial Design and Engineering Graphics (2017):101-104,
https://hdl.handle.net/21.15107/rcub_machinery_5690 .