TY  - JOUR
AU  - Benisa, Muamar
AU  - Babić, Bojan
AU  - Grbović, Aleksandar
AU  - Stefanović, Zoran
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1935
AB  - Pri proizvodnji novog dela može se primeniti pristup probnih pokušaja u cilju dobijanja dela bez defekata, a to u velikoj meri zavisi od iskustva radnika. U ovoj fazi iskustvo projektanta i proizvođača treba da pruži važnu podršku za smanjenje broja pokušaja i samim tim doprinese minimizaciji vremena odziva i troškova uz maksimizaciju ujednačenosti proizvoda. Obrada lima u alatima sa gumenim jezgrom značajno unapređuje formabilnost pripremka zbog toga što su kontaktne površine između krutog dela alata i dela alata sa gumenim jezgrom fleksibilne. Ovaj metod omogućava izradu delova od lima sa kompleksnim konturama uz relativno male troškove zbog toga što je potreban samo jedan deo alata od čvrstog materijala. U avio industriji proizvode se delovi od lima u malim količinama tako da se ne isplate veće investicije u alate i projektovanje procesa. Iz ovih razloga neophodna je primena simulacija tehnološkog procesa metodom konačnih elemenata tokom konceptualnog projektovanja.
AB  - To produce a new component there are a trial and error stage to obtain a part without defects, which strongly depends on operator's experience. At this stage, the experience of designer and manufacturers should give an important aid to reduce trials to realize the minimization of response time and cost with maximization of the product equality. Rubber pad forming highly improves the formability of the blank because the contact surfaces between the rigid die and the rubber pad is flexible. This method enables to produce sheet metal components with complex contour by relatively low cost because only one rigid die is required. However, in aerospace field, parts are produced in small sheet metal bending and small number of components. It means that it is not worthy for large investments in tools and process design. For these reasons, it is necessary to use FE simulation of manufacturing process during the conceptual design.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Numerička simulacija kao alat za optimizaciju geometrije alata za procese obrade lima u alatima sa gumenim jezgrom
T1  - Numerical simulation as a tool for optimizing tool geometry for rubber pad forming process
EP  - 73
IS  - 1
SP  - 67
VL  - 42
DO  - 10.5937/fmet1401067B
ER  - 

@article{
author = "Benisa, Muamar and Babić, Bojan and Grbović, Aleksandar and Stefanović, Zoran",
year = "2014",
abstract = "Pri proizvodnji novog dela može se primeniti pristup probnih pokušaja u cilju dobijanja dela bez defekata, a to u velikoj meri zavisi od iskustva radnika. U ovoj fazi iskustvo projektanta i proizvođača treba da pruži važnu podršku za smanjenje broja pokušaja i samim tim doprinese minimizaciji vremena odziva i troškova uz maksimizaciju ujednačenosti proizvoda. Obrada lima u alatima sa gumenim jezgrom značajno unapređuje formabilnost pripremka zbog toga što su kontaktne površine između krutog dela alata i dela alata sa gumenim jezgrom fleksibilne. Ovaj metod omogućava izradu delova od lima sa kompleksnim konturama uz relativno male troškove zbog toga što je potreban samo jedan deo alata od čvrstog materijala. U avio industriji proizvode se delovi od lima u malim količinama tako da se ne isplate veće investicije u alate i projektovanje procesa. Iz ovih razloga neophodna je primena simulacija tehnološkog procesa metodom konačnih elemenata tokom konceptualnog projektovanja., To produce a new component there are a trial and error stage to obtain a part without defects, which strongly depends on operator's experience. At this stage, the experience of designer and manufacturers should give an important aid to reduce trials to realize the minimization of response time and cost with maximization of the product equality. Rubber pad forming highly improves the formability of the blank because the contact surfaces between the rigid die and the rubber pad is flexible. This method enables to produce sheet metal components with complex contour by relatively low cost because only one rigid die is required. However, in aerospace field, parts are produced in small sheet metal bending and small number of components. It means that it is not worthy for large investments in tools and process design. For these reasons, it is necessary to use FE simulation of manufacturing process during the conceptual design.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Numerička simulacija kao alat za optimizaciju geometrije alata za procese obrade lima u alatima sa gumenim jezgrom, Numerical simulation as a tool for optimizing tool geometry for rubber pad forming process",
pages = "73-67",
number = "1",
volume = "42",
doi = "10.5937/fmet1401067B"
}

Benisa, M., Babić, B., Grbović, A.,& Stefanović, Z.. (2014). Numerička simulacija kao alat za optimizaciju geometrije alata za procese obrade lima u alatima sa gumenim jezgrom. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 42(1), 67-73.
https://doi.org/10.5937/fmet1401067B

Benisa M, Babić B, Grbović A, Stefanović Z. Numerička simulacija kao alat za optimizaciju geometrije alata za procese obrade lima u alatima sa gumenim jezgrom. in FME Transactions. 2014;42(1):67-73.
doi:10.5937/fmet1401067B .

Benisa, Muamar, Babić, Bojan, Grbović, Aleksandar, Stefanović, Zoran, "Numerička simulacija kao alat za optimizaciju geometrije alata za procese obrade lima u alatima sa gumenim jezgrom" in FME Transactions, 42, no. 1 (2014):67-73,
https://doi.org/10.5937/fmet1401067B . .

TY  - JOUR
AU  - Benisa, Muamar
AU  - Babić, Bojan
AU  - Grbović, Aleksandar
AU  - Stefanović, Zoran
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1573
AB  - The conventional way to develop press-formed metallic components requires a burdensome trial-and-error process for setting-up the technology, whose success depends largely on the operator's skill and experience. The finite element (FE) simulations of a sheet-metal-forming process help a manufacturing engineer to design a forming process by shifting the costly press-shop try-outs to the computer-aided design environment. Numerical simulations of a manufacturing process, such as rubber-pad forming, have been introduced in order to avoid the trial-and-error procedure and shorten the development phases when tight times-to-market are demanded. The main aim of the investigation presented in this paper was to develop a numerical model that would be able to successfully simulate a rubber-pad forming process. The finite-element method was used for blank- and rubber-behavior predictions during the process. The study was concerned with a simulation and investigation of significant parameters (such as forming force and stress, and strain distribution in a blank) associated with the rubber-pad forming process and the capabilities of this process regarding the manufacturing of aircraft wing ribs. The simulation and investigation carried out identified the stress and strain distribution in a blank as well as the forming force. Experimental analyses of a rib with a lightening hole showed a good correlation between FE simulations and experimental results.
PB  - Institute of Metals and Technology
T2  - Materiali in Tehnologije
T1  - Computer-aided modeling of the rubber-pad forming process
EP  - 510
IS  - 5
SP  - 503
VL  - 46
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1573
ER  - 

@article{
author = "Benisa, Muamar and Babić, Bojan and Grbović, Aleksandar and Stefanović, Zoran",
year = "2012",
abstract = "The conventional way to develop press-formed metallic components requires a burdensome trial-and-error process for setting-up the technology, whose success depends largely on the operator's skill and experience. The finite element (FE) simulations of a sheet-metal-forming process help a manufacturing engineer to design a forming process by shifting the costly press-shop try-outs to the computer-aided design environment. Numerical simulations of a manufacturing process, such as rubber-pad forming, have been introduced in order to avoid the trial-and-error procedure and shorten the development phases when tight times-to-market are demanded. The main aim of the investigation presented in this paper was to develop a numerical model that would be able to successfully simulate a rubber-pad forming process. The finite-element method was used for blank- and rubber-behavior predictions during the process. The study was concerned with a simulation and investigation of significant parameters (such as forming force and stress, and strain distribution in a blank) associated with the rubber-pad forming process and the capabilities of this process regarding the manufacturing of aircraft wing ribs. The simulation and investigation carried out identified the stress and strain distribution in a blank as well as the forming force. Experimental analyses of a rib with a lightening hole showed a good correlation between FE simulations and experimental results.",
publisher = "Institute of Metals and Technology",
journal = "Materiali in Tehnologije",
title = "Computer-aided modeling of the rubber-pad forming process",
pages = "510-503",
number = "5",
volume = "46",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1573"
}

Benisa, M., Babić, B., Grbović, A.,& Stefanović, Z.. (2012). Computer-aided modeling of the rubber-pad forming process. in Materiali in Tehnologije
Institute of Metals and Technology., 46(5), 503-510.
https://hdl.handle.net/21.15107/rcub_machinery_1573

Benisa M, Babić B, Grbović A, Stefanović Z. Computer-aided modeling of the rubber-pad forming process. in Materiali in Tehnologije. 2012;46(5):503-510.
https://hdl.handle.net/21.15107/rcub_machinery_1573 .

Benisa, Muamar, Babić, Bojan, Grbović, Aleksandar, Stefanović, Zoran, "Computer-aided modeling of the rubber-pad forming process" in Materiali in Tehnologije, 46, no. 5 (2012):503-510,
https://hdl.handle.net/21.15107/rcub_machinery_1573 .