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A coupled thermo-mechanical model of friction stir welding
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2012)
A coupled thermo-mechanical model was developed to study the temperature fields, the plunge force and the plastic deformations of Al alloy 2024-T351 under different rotating speed: 350, 400, and 450 rpm, during the friction ...
Karakterizacija kontaktnih sočiva na bazi nanomaterijala pomoću nanoprob mikroskopa atomskih sila / Characterization of nanomaterial-based contact lenses by atomic force microscopy
(Contemporary materials, 2012)
U ovom radu predstavljeno je komparativno ispitivanje topografskih karakteristika potencijalnog novog, fotoničnog nanomaterijala za izradu kontaktnih sočiva i komercijalnog materijala kontaktnih sočiva. Ispitivanje je ...
Elastic-plastic behaviour of welded joints during loading and unloading of pressure vessels
(Elsevier Science Bv, Amsterdam, 2016)
In this paper elastic-plastic behaviour of welded joints during loading and unloading of pressure vessel has been analysed. Two stage pressuring process has been applied in previous experimental investigation and simulated ...
Predviđanje veka čeličnog žičanog užeta u eksploataciji / Service life prediction of running steel wire ropes
(Institut za ispitivanje materijala, Beograd, 2010)
Vrlo visoka čvrstoća omogućava žičanom užetu da prenese velike zatezne sile i da se kreće po koturima relativno malog prečnika. Žice od čelika vrlo visoke čvrstoće su postojale više od sto godina pre nego što su patentirane, ...
Theoretical-experimental determining of cooling time (t8/5) in hard facing of steels for forging dies
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2010)
This paper investigates the accuracy of analytical, empirical, and numerical expressions, i. e. the most favourable methods for calculating the cooling time from 800 to 500°C (t8/5). The degree of accuracy of time t8/5 is ...
Energetic analysis of hard facing and weld cladding of an air powered drop hammer damaged ram
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2010)
This paper studies problems of hard facing of damaged and initially cracked mechanical engineering heavy parts of complex geometry such as large rams of air powered drop hammers. During long-term exploitation, these parts ...
Numeričko-eksperimentalna dijagnostika čvrstoće konstrukcija / Numerical and experimental diagnostics of structural strength
(Institut za ispitivanje materijala, Beograd, 2010)
U radu je prikazan razvijeni postupak numeričko-eksperimentalne dijagnostike čvrstoće konstrukcija. Numerička dijagnostika primenjuje metodu konačnih elemenata, analizu rezultata proračuna i definisanje parametara ponašanja. ...
Practical aspects of fail-safe design - calculation of fatigue life of cracked thin-walled structures
(Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek, 2011)
This paper represents fatigue crack growth life prediction in thin-walled structures (plates or shells). There are two analysis results from two different packages of software: NASGRO and FRANC 3D. They are based on Finite ...
Uticaj zaštitnog gasa na žilavost metala šava legure AlMg4.5Mn dobijenog postupkom zavarivanja cirkulacijom / The effect of shielding gas on the toughness of AlMg4.5Mn weld metals made by GMAW
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2011)
Analiziran je uticaj zaštitnog gasa, na žilavost metala šava aluminijumske legure AlMg4.5Mn dobijenog MIG/MAG postupkom zavarivanja. Za merenje žilavosti je korišćeno instrumentirano Šarpijevo klatno sa mogućnošću razdvajanja ...
Numerička simulacija faze uranjanja kod zavarivanja trenjem mešanjem / Numerical simulation of the plunge stage in friction stir welding
(Institut za ispitivanje materijala, Beograd, 2011)
U ovom radu je istražena faza uranjanja alata primenom numeričkog modeliranja. Trodimenzionalni model konačnih elemenata (FEM) faze uranjanja je razvijen primenom softvera ABAQUS radi proučavanja termomehaničkih procesa ...