TY  - JOUR
AU  - Gasić, Vlada
AU  - Zrnić, Nenad
AU  - Rakin, Marko
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2209
AB  - This work examines the dynamics of a two-dimensional jib crane structure subjected to a moving trolley with hoist and payload. Dynamic responses of the structure, both in the vertical (Y) and horizontal direction (X), are calculated using the finite element method and the direct integration method. Instead of the conventional moving force problem, this paper deals with the two-dimensional inertial effects due to the masses of trolley, hoist and payload. For this purpose, the moving mass matrix has been used to give contribution to the overall mass matrix of the entire system. The title problem was solved by calculating the forced vibration responses of the jib crane structure with time-dependent overall mass while subjected to an equivalent moving force. Factors as magnitude, speed and acceleration of the moving trolley were studied as well. Numerical results reveal that the approach used herein is usefull and can be used to draw conclusions for the structural design purposes of jib cranes.
PB  - University of Osijek, Tech Fac, Slavonski Brod
T2  - Tehnicki vjesnik-Technical Gazette
T1  - Consideration of a moving mass effect on dynamic behaviour of a jib crane structure
EP  - 121
IS  - 1
SP  - 115
VL  - 19
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2209
ER  - 

@article{
author = "Gasić, Vlada and Zrnić, Nenad and Rakin, Marko",
year = "2012",
abstract = "This work examines the dynamics of a two-dimensional jib crane structure subjected to a moving trolley with hoist and payload. Dynamic responses of the structure, both in the vertical (Y) and horizontal direction (X), are calculated using the finite element method and the direct integration method. Instead of the conventional moving force problem, this paper deals with the two-dimensional inertial effects due to the masses of trolley, hoist and payload. For this purpose, the moving mass matrix has been used to give contribution to the overall mass matrix of the entire system. The title problem was solved by calculating the forced vibration responses of the jib crane structure with time-dependent overall mass while subjected to an equivalent moving force. Factors as magnitude, speed and acceleration of the moving trolley were studied as well. Numerical results reveal that the approach used herein is usefull and can be used to draw conclusions for the structural design purposes of jib cranes.",
publisher = "University of Osijek, Tech Fac, Slavonski Brod",
journal = "Tehnicki vjesnik-Technical Gazette",
title = "Consideration of a moving mass effect on dynamic behaviour of a jib crane structure",
pages = "121-115",
number = "1",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2209"
}

Gasić, V., Zrnić, N.,& Rakin, M.. (2012). Consideration of a moving mass effect on dynamic behaviour of a jib crane structure. in Tehnicki vjesnik-Technical Gazette
University of Osijek, Tech Fac, Slavonski Brod., 19(1), 115-121.
https://hdl.handle.net/21.15107/rcub_technorep_2209

Gasić V, Zrnić N, Rakin M. Consideration of a moving mass effect on dynamic behaviour of a jib crane structure. in Tehnicki vjesnik-Technical Gazette. 2012;19(1):115-121.
https://hdl.handle.net/21.15107/rcub_technorep_2209 .

Gasić, Vlada, Zrnić, Nenad, Rakin, Marko, "Consideration of a moving mass effect on dynamic behaviour of a jib crane structure" in Tehnicki vjesnik-Technical Gazette, 19, no. 1 (2012):115-121,
https://hdl.handle.net/21.15107/rcub_technorep_2209 .

TY  - JOUR
AU  - Bošnjak, Srđan
AU  - Arsić, Miodrag
AU  - Zrnić, Nenad
AU  - Rakin, Marko
AU  - Pantelić, Milorad P.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1928
AB  - The bucket wheel boom tie-rods are vital structural parts of the bucket wheel excavators (BWE) Their failures inevitably cause BWE collapse and are followed among other things by a substantial financial loss (millions of E) Non-destructive testing revealed a flaw in the butt welded Joint of the body and eye-plate of the bucket wheel tie-rod Its size exceeds the level allowed by current technical regulations An integrity assessment of the bucket wheel tie-rod has been carried out i e the remaining fatigue life has been determined based on the stress-state characteristics in the welded Joint and defined by experimental research in real working conditions The calculation results show that despite the excessive size of the internal flaw the welded Joint integrity is not compromised During periodical inspections of the welded joint in the past two years (BWE was put into operation in December 2007) changes that could compromise the structural integrity were not observed In this way by using a fail-safe philosophy design a considerable financial saving (ca 1 600 000 (sic)) was achieved while at the same time there was no threat to the worker s safety and life the safety of the machine and the production process in the open pit mine
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Bucket wheel excavator Integrity assessment of the bucket wheel boom tie-rod welded joint
EP  - 222
IS  - 1
SP  - 212
VL  - 18
DO  - 10.1016/j.engfailanal.2010.09.001
ER  - 

@article{
author = "Bošnjak, Srđan and Arsić, Miodrag and Zrnić, Nenad and Rakin, Marko and Pantelić, Milorad P.",
year = "2011",
abstract = "The bucket wheel boom tie-rods are vital structural parts of the bucket wheel excavators (BWE) Their failures inevitably cause BWE collapse and are followed among other things by a substantial financial loss (millions of E) Non-destructive testing revealed a flaw in the butt welded Joint of the body and eye-plate of the bucket wheel tie-rod Its size exceeds the level allowed by current technical regulations An integrity assessment of the bucket wheel tie-rod has been carried out i e the remaining fatigue life has been determined based on the stress-state characteristics in the welded Joint and defined by experimental research in real working conditions The calculation results show that despite the excessive size of the internal flaw the welded Joint integrity is not compromised During periodical inspections of the welded joint in the past two years (BWE was put into operation in December 2007) changes that could compromise the structural integrity were not observed In this way by using a fail-safe philosophy design a considerable financial saving (ca 1 600 000 (sic)) was achieved while at the same time there was no threat to the worker s safety and life the safety of the machine and the production process in the open pit mine",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Bucket wheel excavator Integrity assessment of the bucket wheel boom tie-rod welded joint",
pages = "222-212",
number = "1",
volume = "18",
doi = "10.1016/j.engfailanal.2010.09.001"
}

Bošnjak, S., Arsić, M., Zrnić, N., Rakin, M.,& Pantelić, M. P.. (2011). Bucket wheel excavator Integrity assessment of the bucket wheel boom tie-rod welded joint. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 18(1), 212-222.
https://doi.org/10.1016/j.engfailanal.2010.09.001

Bošnjak S, Arsić M, Zrnić N, Rakin M, Pantelić MP. Bucket wheel excavator Integrity assessment of the bucket wheel boom tie-rod welded joint. in Engineering Failure Analysis. 2011;18(1):212-222.
doi:10.1016/j.engfailanal.2010.09.001 .

Bošnjak, Srđan, Arsić, Miodrag, Zrnić, Nenad, Rakin, Marko, Pantelić, Milorad P., "Bucket wheel excavator Integrity assessment of the bucket wheel boom tie-rod welded joint" in Engineering Failure Analysis, 18, no. 1 (2011):212-222,
https://doi.org/10.1016/j.engfailanal.2010.09.001 . .