Cracks, repair and reconstruction of bucket wheel excavator slewing platform
Само за регистроване кориснике
2009
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
This paper discusses the results of the investigation of occurrence of cracks in the structure of bucket wheel excavator (BWE) slewing platform, the repair procedure and the reconstruction of the slewing platform. The results of the finite elements analysis (FEA) point out the pronounced stress concentration in the zones of crack occurrence. The values of calculated stresses in the said zones exceed the yield stress of the material. The design solution for the slewing platform reconstruction is chosen based on the comparative analysis of stress-strain states of alternative solutions. The adopted solution enabled the repair and reconstruction in field conditions, without previously dismantling components of the BWE superstructure. Moreover, the regular maintenance procedure has not been impeded. Experimental analysis of the stress state of the reconstructed slewing platform in regular working conditions has confirmed the validity of the reconstruction design. After the reconstruction th...e BWE has dug up more than 2.9 x 10(6) m(3) of overburden. Visual inspection of slewing platform proved that there are no defects in the structure.
Кључне речи:
Stress analysis / Repairs / Finite element analysis / Cracks / Bucket wheel excavatorИзвор:
Engineering Failure Analysis, 2009, 16, 5, 1631-1642Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
Финансирање / пројекти:
- Развој машина високих перформанси и метода за идентификацију њиховог одзива на унутрашње и спољашње поремећаје (RS-MESTD-MPN2006-2010-14052)
DOI: 10.1016/j.engfailanal.2008.11.009
ISSN: 1350-6307
WoS: 000272673600034
Scopus: 2-s2.0-64749087895
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Bošnjak, Srđan AU - Petković, Zoran D. AU - Zrnić, Nenad AU - Simić, Goran AU - Simonović, Aleksandar PY - 2009 UR - https://machinery.mas.bg.ac.rs/handle/123456789/978 AB - This paper discusses the results of the investigation of occurrence of cracks in the structure of bucket wheel excavator (BWE) slewing platform, the repair procedure and the reconstruction of the slewing platform. The results of the finite elements analysis (FEA) point out the pronounced stress concentration in the zones of crack occurrence. The values of calculated stresses in the said zones exceed the yield stress of the material. The design solution for the slewing platform reconstruction is chosen based on the comparative analysis of stress-strain states of alternative solutions. The adopted solution enabled the repair and reconstruction in field conditions, without previously dismantling components of the BWE superstructure. Moreover, the regular maintenance procedure has not been impeded. Experimental analysis of the stress state of the reconstructed slewing platform in regular working conditions has confirmed the validity of the reconstruction design. After the reconstruction the BWE has dug up more than 2.9 x 10(6) m(3) of overburden. Visual inspection of slewing platform proved that there are no defects in the structure. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Engineering Failure Analysis T1 - Cracks, repair and reconstruction of bucket wheel excavator slewing platform EP - 1642 IS - 5 SP - 1631 VL - 16 DO - 10.1016/j.engfailanal.2008.11.009 ER -
@article{ author = "Bošnjak, Srđan and Petković, Zoran D. and Zrnić, Nenad and Simić, Goran and Simonović, Aleksandar", year = "2009", abstract = "This paper discusses the results of the investigation of occurrence of cracks in the structure of bucket wheel excavator (BWE) slewing platform, the repair procedure and the reconstruction of the slewing platform. The results of the finite elements analysis (FEA) point out the pronounced stress concentration in the zones of crack occurrence. The values of calculated stresses in the said zones exceed the yield stress of the material. The design solution for the slewing platform reconstruction is chosen based on the comparative analysis of stress-strain states of alternative solutions. The adopted solution enabled the repair and reconstruction in field conditions, without previously dismantling components of the BWE superstructure. Moreover, the regular maintenance procedure has not been impeded. Experimental analysis of the stress state of the reconstructed slewing platform in regular working conditions has confirmed the validity of the reconstruction design. After the reconstruction the BWE has dug up more than 2.9 x 10(6) m(3) of overburden. Visual inspection of slewing platform proved that there are no defects in the structure.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Engineering Failure Analysis", title = "Cracks, repair and reconstruction of bucket wheel excavator slewing platform", pages = "1642-1631", number = "5", volume = "16", doi = "10.1016/j.engfailanal.2008.11.009" }
Bošnjak, S., Petković, Z. D., Zrnić, N., Simić, G.,& Simonović, A.. (2009). Cracks, repair and reconstruction of bucket wheel excavator slewing platform. in Engineering Failure Analysis Pergamon-Elsevier Science Ltd, Oxford., 16(5), 1631-1642. https://doi.org/10.1016/j.engfailanal.2008.11.009
Bošnjak S, Petković ZD, Zrnić N, Simić G, Simonović A. Cracks, repair and reconstruction of bucket wheel excavator slewing platform. in Engineering Failure Analysis. 2009;16(5):1631-1642. doi:10.1016/j.engfailanal.2008.11.009 .
Bošnjak, Srđan, Petković, Zoran D., Zrnić, Nenad, Simić, Goran, Simonović, Aleksandar, "Cracks, repair and reconstruction of bucket wheel excavator slewing platform" in Engineering Failure Analysis, 16, no. 5 (2009):1631-1642, https://doi.org/10.1016/j.engfailanal.2008.11.009 . .