Search Results - "Gnjatović, Nebojša"

Analysis of the Dynamic Response as a Basis for the Efficient Protection of Large Structure Health Using Controllable Frequency-Controlled Drives by Gnjatovic, Nebojsa, Bosnjak, Srdan, Stefanovic, Aleksandar

“…Continuous earthmoving machines, such as bucket-wheel excavators (BWEs), are the largest mobile terrestrial machines exposed to the working loads of a periodic…”
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Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state by Bošnjak, Srđan M., Zrnić, Nenad Đ., Momčilović, Dejan B., Gnjatović, Nebojša B., Milenović, Ivan Lj

“…•Tie-rods are vital parts of the bucket wheel excavator slewing superstructure.•Experimental and numerical investigations are carried out on the eyebar…”
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Integrity assessment and determination of residual fatigue life of vital parts of bucket-wheel excavator operating under dynamic loads by Arsić, Dušan, Gnjatović, Nebojša, Sedmak, Simon, Arsić, Aleksandra, Uhričik, Milan

“…In this paper are presented results of tests and analyses of complex dynamic loads carried out on the bucket-wheel excavator SchRs 650/5 × 24 Krupp, as well as…”
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Bucket wheel failure caused by residual stresses in welded joints by Arsić, Miodrag, Bošnjak, Srđan, Zrnić, Nenad, Sedmak, Aleksandar, Gnjatović, Nebojša

“…Cracks in the welded joints on the bucket wheel (BW) body of the bucket wheel excavator (BWE) SRs 1300 were discovered after merely 1800 h of operation…”
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Basic parameters of the static stability, loads and strength of the vital parts of a bucket wheel excavator’s slewing superstructure by Bošnjak, Srđan M., Gnjatović, Nebojša B., Savićević, Sreten D., Pantelić, Milorad P., Milenović, Ivan Lj

“…Determining a bucket wheel excavator (BWE)’s slewing superstructure weight and its center of gravity (COG) is of extreme importance not only in the design…”
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Failure analysis and reconstruction design of the slewing platform mantle of the bucket wheel excavator O&K SchRs 630 by Bosnjak, Srdan, Pantelic, Milorad, Zrnic, Nenad, Gnjatovic, Nebojsa, Dordevic, Milos

“…The slewing platform is the fundamental part of the bucket wheel excavator (BWE) structure. The occurrence and propagation of cracks in the zones of the…”
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Application of Fracture Mechanics Parameters to Spherical Storage Tank Integrity Assessment by Milovanovic, Aleksandar, Sedmak, Aleksandar, Gnjatovic, Nebojsa

“…Fracture mechanics parameters have been applied to assess pressure vessel integrity. The pressure vessel analysed here was the ammonia spherical tank (volume…”
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Bucket wheel excavators with a kinematic breakdown system : identification and monitoring of the basic parameters of static stability of the slewing superstructure by Milenović, Ivan, Bošnjak, Srđan, Gnjatović, Nebojša, Obradović, Aleksandar

“…Identification of the basic parameters of static stability (BPSS) of the slewing superstructure is the key step in solving the problem of its static stability,…”
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Bucket wheel excavators: Dynamic response as a criterion for validation of the total number of buckets by Gnjatović, Nebojša B., Bošnjak, Srđan M., Milenović, Ivan Lj, Stefanović, Aleksandar Z.

“…•A method of selection and validation of the total number of buckets was developed.•The method used for the research is based on the dynamic response…”
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Failure of the bucket wheel excavator buckets by Bošnjak, Srđan M., Arsić, Miodrag A., Gnjatović, Nebojša B., Milenović, Ivan L.J., Arsić, Dušan M.

“…Buckets are a vital substructure of all digging machines, and are intended for the realisation of the fundamental machine function - soil excavation. This…”
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Service FMECA of a bucket wheel excavator by Pantelić, Milorad P., Bošnjak, Srđan M., Misita, Mirjana Z., Gnjatović, Nebojša B., Stefanović, Aleksandar Z.

“…•We presented a consistent approach to the quantification of risk for BWE.•Results of experimental and numerical investigations are discussed.•Corrective…”
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Disaster of the bucket wheel excavator caused by extreme environmental impact: Consequences, rescue and reconstruction by Bosnjak, Sran M, Savicevic, Sreten D, Gnjatovic, Nebojsa B, Milenovic, Ivan LJ, Pantelic, Milorad P

“…•Slope failure was the cause of a severe accident of the bucket wheel excavator.•The technology of the excavator’s rescue and balancing are presented.•The…”
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From "a priori" to "a posteriori" static stability of the slewing superstructure of a bucket wheel excavator by Bošnjak, S., Gnjatović, N., Milenović, I.

“…The complexity of the slewing superstructure (SS) balancing problem derives from the changeability of its geometric configuration, the complexity of working…”
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Утицај конструкционих параметара и параметара побуде на одзив двопорталног роторног багера у ванрезонанцијској области by Gnjatović, Nebojša B

“…У раду је постављен оригинални просторни динамички модел двопорталног роторног багера који омогућава модалну анализу и анализу одзива система у условима…”
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‘Designing-in’ failures and redesign of bucket wheel excavator undercarriage by Bošnjak, Srđan M., Petković, Zoran D., Simonović, Aleksandar M., Zrnić, Nenad Đ., Gnjatović, Nebojša B.

“…► Concept of leaning and badly shaped junctions were the cause of cracks appearance. ► The intuitive attempt to reinforce the girders was unsuccessful. ► The…”
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Failure investigation of the bucket wheel excavator crawler chain link by Bošnjak, Srđan M., Momčilović, Dejan B., Petković, Zoran D., Pantelić, Milorad P., Gnjatović, Nebojša B.

“…•We examined the causes for the damage of the BWE crawler chain links.•Chain link breakdowns are caused by ‘manufacturing-in’ defects.•The results emphasize…”
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Procjena integriteta zavarenih spojeva rotornog bagera primjenom metode jednostrukog izbora by Rakin, Marko, Arsić, Miodrag, Bošnjak, Srđan, Gnjatović, Nebojša, Međo, Bojan

“…U cilju smanjenja troškova ispitivanja zavarenih spojeva na vitalnim konstrukcijama i gubitaka u proizvodnji zbog zastoja u radu bagera, razvijena je nova…”
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Utjecaj osovina kotača na čvrstoću dvokotačnih kolica rotornog bagera by Bošnjak, Srđan, Petković, Zoran, Gnjatović, Nebojša, Milenović, Ivan, Jerman, Boris

“…U radu su prezentirani rezultati studije čvrstoće dvokotačnih kolica (DKK) pogona kretanja rotornog bagera. Analizom su obuhvaćene dvije varijante strukture…”
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INTEGRITY ASSESSMENT OF BUCKET WHEEL EXCAVATOR WELDED STRUCTURES BY USING THE SINGLE SELECTION METHOD by Rakin, Marko, Arsic, Miodrag, Bosnjak, Srdan, Gnjatovic, Nebojsa, Medo, Bojan

“…In order to reduce the testing costs for structural welded joints and production losses due to excavator standstill, a new method for integrity and reliability…”
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IMPACT OF THE TRACK WHEEL AXLES ON THE STRENGTH OF THE BUCKET WHEEL EXCAVATOR TWO-WHEEL BOGIE by Bosnjak, Srdan, Petkovic, Zoran, Gnjatovic, Nebojsa, Milenovic, Ivan, Jerman, Boris

“…This paper presents the results of the study dedicated to the problem of the bucket wheel excavator two-wheel bogie (TWB) strength. Two variants of the TWB…”
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