TY  - CONF
AU  - Peković, Ognjen
AU  - Aleksić, Ivan
AU  - Svorcan, Jelena
AU  - Volf, Goran
AU  - Matić, Dušan
AU  - Kirin, Snežana
AU  - Mitrović, Nenad
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7701
AB  - The pantograph’s purpose is to transfer electrical power from the overhead contact line to the train’s electric propulsion unit. To perform its function adequately, it is necessary to maintain the static contact force between the pantograph and the contact line within the values prescribed by appropriate standards for the entire extension range of the pantograph. The requirement to reach high contact lines complicates the kinematic scheme because the deviation of the trajectory of the pantograph’s collector head from vertical is also prescribed by standards. Further, the structural design of the pantograph is challenging because the greater slenderness ratio of the structure makes it difficult to meet the requirements in terms of stiffness and resistance to vibrations. While at low speeds aerodynamic forces are usually neglected, in high-speed pantographs, they have a significant impact and it is necessary to compensate for them. An aggravating circumstance is the
requirement that the pantograph should work in both knuckle-downstream and knuckle-upstream directions. This paper aims to present the development of a high-speed high–reach pantograph that is developed through the cooperation of company Minel General Electric and the University of Belgrade – Faculty of Mechanical Engineering as well as to present innovative designs of 
 gravitational and aerodynamical compensations that enabled the satisfaction of requested requirements in terms of geometric and static performance.
PB  - University of Belgrade - Faculty of Mechanical Engineering
C3  - International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023
T1  - DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS
SP  - 97
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7701
ER  - 

@conference{
author = "Peković, Ognjen and Aleksić, Ivan and Svorcan, Jelena and Volf, Goran and Matić, Dušan and Kirin, Snežana and Mitrović, Nenad",
year = "2023",
abstract = "The pantograph’s purpose is to transfer electrical power from the overhead contact line to the train’s electric propulsion unit. To perform its function adequately, it is necessary to maintain the static contact force between the pantograph and the contact line within the values prescribed by appropriate standards for the entire extension range of the pantograph. The requirement to reach high contact lines complicates the kinematic scheme because the deviation of the trajectory of the pantograph’s collector head from vertical is also prescribed by standards. Further, the structural design of the pantograph is challenging because the greater slenderness ratio of the structure makes it difficult to meet the requirements in terms of stiffness and resistance to vibrations. While at low speeds aerodynamic forces are usually neglected, in high-speed pantographs, they have a significant impact and it is necessary to compensate for them. An aggravating circumstance is the
requirement that the pantograph should work in both knuckle-downstream and knuckle-upstream directions. This paper aims to present the development of a high-speed high–reach pantograph that is developed through the cooperation of company Minel General Electric and the University of Belgrade – Faculty of Mechanical Engineering as well as to present innovative designs of 
 gravitational and aerodynamical compensations that enabled the satisfaction of requested requirements in terms of geometric and static performance.",
publisher = "University of Belgrade - Faculty of Mechanical Engineering",
journal = "International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023",
title = "DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS",
pages = "97",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7701"
}

Peković, O., Aleksić, I., Svorcan, J., Volf, G., Matić, D., Kirin, S.,& Mitrović, N.. (2023). DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS. in International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023
University of Belgrade - Faculty of Mechanical Engineering., 97.
https://hdl.handle.net/21.15107/rcub_machinery_7701

Peković O, Aleksić I, Svorcan J, Volf G, Matić D, Kirin S, Mitrović N. DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS. in International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023. 2023;:97.
https://hdl.handle.net/21.15107/rcub_machinery_7701 .

Peković, Ognjen, Aleksić, Ivan, Svorcan, Jelena, Volf, Goran, Matić, Dušan, Kirin, Snežana, Mitrović, Nenad, "DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS" in International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023 (2023):97,
https://hdl.handle.net/21.15107/rcub_machinery_7701 .

TY  - JOUR
AU  - Puharić, Mirjana
AU  - Matić, Dušan
AU  - Linić, Suzana
AU  - Ristić, Slavica
AU  - Lučanin, Vojkan
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2007
AB  - Ovaj rad predstavlja rezultate istraživanja uticaja aerodinamičkih kočnica, postavljenih na krov brzog voza, na strujno polje i ukupnu silu kočenja. Voz se sastoji od dve lokomotive, na svakom kraju, i četiri putnička vagona., ukupne dužine 121m. Aerodinamičke kočnice stvaraju silu kočenja povećavanjem aerodinamičkog otpora pomoću izvučenih panela na krovu voza. Simulacije strujanja su urađene softverom Fluent 12.1, za voz bez, sa jednom, dve i tri aerodinamičke kočnice, pri brzinama od 30, 50 i 70m/s. Sila otpora po jedinici površine panela je određena kao funkcija brzine voza i položaja aerodinamičke kočnice. Doprinosi ukupnoj sili kočenja svake od kočnica, određeni simulacijama su: za prvu 24%, za drugu 15% i za treću 14.8% i pokazali su , zajedno sa raspodelama pritisaka po panelima, dobro slaganje sa proračunima aerodinamičkog otpora za ravnu ploču upravno postavljenu prema strujanju.
AB  - This work presents the research results of the aerodynamic brake influence, mounted on the high-speed train's roof, on the flow field and overall braking force. The train consists of two locomotives at each end and four passenger cars between, with 121m of overall length. Aerodynamic brakes are designed to generate braking force by means of increasing the aerodynamic drag by opened panels over the train. Flow simulations were made by Fluent 12.1 software, for the train without and with one, two and three aerodynamic brakes, and velocities of 30, 50 and 70m/s. Drag force per unit panel area was determined as a function of train's velocity and the brake position. Contributions to train's gross braking force of each brake, obtained by simulations were: for first 24%, for second 15% and third 14.8%, and showed, also with panels' pressure distribution, good correlation with the aerodynamic drag calculations for flat plate orthogonally disposed to flow stream.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Određivanje sile kočenja na aerodinamičkim kočnicama pomoću numeričkih simulacija
T1  - Determination of braking force on the aerodynamic brake by numerical simulations
EP  - 111
IS  - 2
SP  - 106
VL  - 42
DO  - 10.5937/fmet1402106P
ER  - 

@article{
author = "Puharić, Mirjana and Matić, Dušan and Linić, Suzana and Ristić, Slavica and Lučanin, Vojkan",
year = "2014",
abstract = "Ovaj rad predstavlja rezultate istraživanja uticaja aerodinamičkih kočnica, postavljenih na krov brzog voza, na strujno polje i ukupnu silu kočenja. Voz se sastoji od dve lokomotive, na svakom kraju, i četiri putnička vagona., ukupne dužine 121m. Aerodinamičke kočnice stvaraju silu kočenja povećavanjem aerodinamičkog otpora pomoću izvučenih panela na krovu voza. Simulacije strujanja su urađene softverom Fluent 12.1, za voz bez, sa jednom, dve i tri aerodinamičke kočnice, pri brzinama od 30, 50 i 70m/s. Sila otpora po jedinici površine panela je određena kao funkcija brzine voza i položaja aerodinamičke kočnice. Doprinosi ukupnoj sili kočenja svake od kočnica, određeni simulacijama su: za prvu 24%, za drugu 15% i za treću 14.8% i pokazali su , zajedno sa raspodelama pritisaka po panelima, dobro slaganje sa proračunima aerodinamičkog otpora za ravnu ploču upravno postavljenu prema strujanju., This work presents the research results of the aerodynamic brake influence, mounted on the high-speed train's roof, on the flow field and overall braking force. The train consists of two locomotives at each end and four passenger cars between, with 121m of overall length. Aerodynamic brakes are designed to generate braking force by means of increasing the aerodynamic drag by opened panels over the train. Flow simulations were made by Fluent 12.1 software, for the train without and with one, two and three aerodynamic brakes, and velocities of 30, 50 and 70m/s. Drag force per unit panel area was determined as a function of train's velocity and the brake position. Contributions to train's gross braking force of each brake, obtained by simulations were: for first 24%, for second 15% and third 14.8%, and showed, also with panels' pressure distribution, good correlation with the aerodynamic drag calculations for flat plate orthogonally disposed to flow stream.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Određivanje sile kočenja na aerodinamičkim kočnicama pomoću numeričkih simulacija, Determination of braking force on the aerodynamic brake by numerical simulations",
pages = "111-106",
number = "2",
volume = "42",
doi = "10.5937/fmet1402106P"
}

Puharić, M., Matić, D., Linić, S., Ristić, S.,& Lučanin, V.. (2014). Određivanje sile kočenja na aerodinamičkim kočnicama pomoću numeričkih simulacija. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 42(2), 106-111.
https://doi.org/10.5937/fmet1402106P

Puharić M, Matić D, Linić S, Ristić S, Lučanin V. Određivanje sile kočenja na aerodinamičkim kočnicama pomoću numeričkih simulacija. in FME Transactions. 2014;42(2):106-111.
doi:10.5937/fmet1402106P .

Puharić, Mirjana, Matić, Dušan, Linić, Suzana, Ristić, Slavica, Lučanin, Vojkan, "Određivanje sile kočenja na aerodinamičkim kočnicama pomoću numeričkih simulacija" in FME Transactions, 42, no. 2 (2014):106-111,
https://doi.org/10.5937/fmet1402106P . .

TY  - JOUR
AU  - Puharić, Mirjana
AU  - Linić, Suzana
AU  - Matić, Dušan
AU  - Lučanin, Vojkan
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1323
AB  - This paper presents the results of simulations, carried out with the Fluent software, for a high speed train moving at 70 m/s for 4 cases: the train configuration without aerodynamic brakes, the train configuration with one aerodynamic brake, with two, and with three aerodynamic brakes deployed over the roof of the train. We have determined the braking force per unit area of aerodynamic brakes and compared our results to the results found in literature. Since it is known that the brake panel installed in the first position creates the greatest resistance, while for the brakes in the second and subsequent positions the intensity of resistance decreases, we analyzed the effect of serial interference and determined the contribution of each brake individually to the total braking force, depending on its position.
T2  - Transactions of Famena
T1  - Determination of braking force of aerodynamic brakes for high speed trains
EP  - 66
IS  - 3
SP  - 57
VL  - 35
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1323
ER  - 

@article{
author = "Puharić, Mirjana and Linić, Suzana and Matić, Dušan and Lučanin, Vojkan",
year = "2011",
abstract = "This paper presents the results of simulations, carried out with the Fluent software, for a high speed train moving at 70 m/s for 4 cases: the train configuration without aerodynamic brakes, the train configuration with one aerodynamic brake, with two, and with three aerodynamic brakes deployed over the roof of the train. We have determined the braking force per unit area of aerodynamic brakes and compared our results to the results found in literature. Since it is known that the brake panel installed in the first position creates the greatest resistance, while for the brakes in the second and subsequent positions the intensity of resistance decreases, we analyzed the effect of serial interference and determined the contribution of each brake individually to the total braking force, depending on its position.",
journal = "Transactions of Famena",
title = "Determination of braking force of aerodynamic brakes for high speed trains",
pages = "66-57",
number = "3",
volume = "35",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1323"
}

Puharić, M., Linić, S., Matić, D.,& Lučanin, V.. (2011). Determination of braking force of aerodynamic brakes for high speed trains. in Transactions of Famena, 35(3), 57-66.
https://hdl.handle.net/21.15107/rcub_machinery_1323

Puharić M, Linić S, Matić D, Lučanin V. Determination of braking force of aerodynamic brakes for high speed trains. in Transactions of Famena. 2011;35(3):57-66.
https://hdl.handle.net/21.15107/rcub_machinery_1323 .

Puharić, Mirjana, Linić, Suzana, Matić, Dušan, Lučanin, Vojkan, "Determination of braking force of aerodynamic brakes for high speed trains" in Transactions of Famena, 35, no. 3 (2011):57-66,
https://hdl.handle.net/21.15107/rcub_machinery_1323 .