Analysis of the cause of the girth gear tooth fracture occurrence at the bucket wheel excavator
2019
Autori
Arsić, DušanNikolić, Ružica
Lazić, Vukić
Arsić, Aleksandra
Savić, Zoran
Djacić, Slaviša
Hadzima, Branislav
Konferencijski prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Premature damages and fractures of components and structures of bucket-wheel excavators at open-pit mine often occur in exploitation, caused either by inadequate design or insufficient knowledge of the material properties, welded joints and flaws in component production technology. The bucket-wheel excavator, TAKRAF SRs 2000 x 32/5.0 was employed on the excavation of barren soil for 5.000 h (a few weeks more than a year after the assembly) when the fracture of the tooth of the girth gear, which enables the circular motion of the upper structure of the bucket-wheel excavator, occurred. The gear was, according to the manufacturer's certificate, made of the cast steel GS 40 MnCrSi3 V. The paper presents calculations of the stress variations cycles' number for one tooth, as well as of the fracture mechanics parameters - the critical stress intensity factor and critical crack length. It was established that the fracture of the tooth occurred due to an initial crack existing in its base, whi...ch originated during the gear's manufacturing, i.e. due to the so-called "manufacturing-in defect".
Ključne reči:
tooth fracture / girth gear / fracture mechanics parameters / Bucket-wheel excavatorIzvor:
13th International Scientific Conference on Sustainable, Modern and Safe Transport (Transcom 2019), 2019, 40, 413-418Izdavač:
- Elsevier, Amsterdam
Finansiranje / projekti:
- European regional development fundEuropean Commission
- Slovak state budget [ITMS2014+ 313011D011, ITMS2014+ 313011T426]
- Održivost i unapređenje mašinskih sistema u energetici i transportu primenom forenzičkog inženjerstva, eko i robust dizajna (RS-MESTD-Technological Development (TD or TR)-35006)
- Istraživanje mogućnosti unapređenja tehnologije zavarivanja mikrolegiranih čelika (RS-MESTD-Technological Development (TD or TR)-35024)
DOI: 10.1016/j.trpro.2019.07.060
ISSN: 2352-1465
WoS: 000568460300059
Scopus: 2-s2.0-85070871971
Institucija/grupa
Institut za ispitivanje materijalaTY - CONF AU - Arsić, Dušan AU - Nikolić, Ružica AU - Lazić, Vukić AU - Arsić, Aleksandra AU - Savić, Zoran AU - Djacić, Slaviša AU - Hadzima, Branislav PY - 2019 UR - http://rims.institutims.rs/handle/123456789/372 AB - Premature damages and fractures of components and structures of bucket-wheel excavators at open-pit mine often occur in exploitation, caused either by inadequate design or insufficient knowledge of the material properties, welded joints and flaws in component production technology. The bucket-wheel excavator, TAKRAF SRs 2000 x 32/5.0 was employed on the excavation of barren soil for 5.000 h (a few weeks more than a year after the assembly) when the fracture of the tooth of the girth gear, which enables the circular motion of the upper structure of the bucket-wheel excavator, occurred. The gear was, according to the manufacturer's certificate, made of the cast steel GS 40 MnCrSi3 V. The paper presents calculations of the stress variations cycles' number for one tooth, as well as of the fracture mechanics parameters - the critical stress intensity factor and critical crack length. It was established that the fracture of the tooth occurred due to an initial crack existing in its base, which originated during the gear's manufacturing, i.e. due to the so-called "manufacturing-in defect". PB - Elsevier, Amsterdam C3 - 13th International Scientific Conference on Sustainable, Modern and Safe Transport (Transcom 2019) T1 - Analysis of the cause of the girth gear tooth fracture occurrence at the bucket wheel excavator EP - 418 SP - 413 VL - 40 DO - 10.1016/j.trpro.2019.07.060 ER -
@conference{ author = "Arsić, Dušan and Nikolić, Ružica and Lazić, Vukić and Arsić, Aleksandra and Savić, Zoran and Djacić, Slaviša and Hadzima, Branislav", year = "2019", abstract = "Premature damages and fractures of components and structures of bucket-wheel excavators at open-pit mine often occur in exploitation, caused either by inadequate design or insufficient knowledge of the material properties, welded joints and flaws in component production technology. The bucket-wheel excavator, TAKRAF SRs 2000 x 32/5.0 was employed on the excavation of barren soil for 5.000 h (a few weeks more than a year after the assembly) when the fracture of the tooth of the girth gear, which enables the circular motion of the upper structure of the bucket-wheel excavator, occurred. The gear was, according to the manufacturer's certificate, made of the cast steel GS 40 MnCrSi3 V. The paper presents calculations of the stress variations cycles' number for one tooth, as well as of the fracture mechanics parameters - the critical stress intensity factor and critical crack length. It was established that the fracture of the tooth occurred due to an initial crack existing in its base, which originated during the gear's manufacturing, i.e. due to the so-called "manufacturing-in defect".", publisher = "Elsevier, Amsterdam", journal = "13th International Scientific Conference on Sustainable, Modern and Safe Transport (Transcom 2019)", title = "Analysis of the cause of the girth gear tooth fracture occurrence at the bucket wheel excavator", pages = "418-413", volume = "40", doi = "10.1016/j.trpro.2019.07.060" }
Arsić, D., Nikolić, R., Lazić, V., Arsić, A., Savić, Z., Djacić, S.,& Hadzima, B.. (2019). Analysis of the cause of the girth gear tooth fracture occurrence at the bucket wheel excavator. in 13th International Scientific Conference on Sustainable, Modern and Safe Transport (Transcom 2019) Elsevier, Amsterdam., 40, 413-418. https://doi.org/10.1016/j.trpro.2019.07.060
Arsić D, Nikolić R, Lazić V, Arsić A, Savić Z, Djacić S, Hadzima B. Analysis of the cause of the girth gear tooth fracture occurrence at the bucket wheel excavator. in 13th International Scientific Conference on Sustainable, Modern and Safe Transport (Transcom 2019). 2019;40:413-418. doi:10.1016/j.trpro.2019.07.060 .
Arsić, Dušan, Nikolić, Ružica, Lazić, Vukić, Arsić, Aleksandra, Savić, Zoran, Djacić, Slaviša, Hadzima, Branislav, "Analysis of the cause of the girth gear tooth fracture occurrence at the bucket wheel excavator" in 13th International Scientific Conference on Sustainable, Modern and Safe Transport (Transcom 2019), 40 (2019):413-418, https://doi.org/10.1016/j.trpro.2019.07.060 . .