Diagnosis the cause of the crack on the bucket wheel boom on the excavator ERs 1250 Gacko
Само за регистроване кориснике
2014
Аутори
Maneski, TaškoIgnjatović, Dragan
Daničić, Darko
Milošević-Mitić, Vesna
Jovančić, Predrag
Petrović, Ana
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Bucket wheel excavator ERs 1250 in Gacko has worked
for over 30 years. Excavator was working in very difficult
conditions because it was exploited very solid material
which negatively affected the dynamic behavior of the
whole structure. Bucket wheel boom of the excavator is a
single tube approximately 20m long. Finite element method
was applied in calculations and the results are presented in
the paper. The first calculation was performed for two load
cases. One case was for the complete usage of engine
power (the worst case) and the other was static analysis
based on the inertial load of the bucket wheel and the drive
group. Measurements of deformations and vibrations on the
bucket wheel boom were performing during process of
digging. Strain and stress measurements were obtained
using inductive sensors and eddy current sensors. These
sensors measure the change in length between the magnets
placed on the measuring points. Experiments and
calculations gave the same res...ults that show the negative
effect of dynamic forces acting on a boom. Earlier this year
the crack was discovered in a cylindrical root of the tube
nearly 270 of its scope. Previously derived calculations
and measurements didn’t indicate the possibility of the
crack appearance. Therefore, additional simulations of
load were performed (horizontal and vertical unit loads)
that could cause the crack. Numerical analysis has shown
that the horizontal force in the amount of 1000 kN could
cause such a large crack.
Кључне речи:
finite elements / experiment / crack / excavatorИзвор:
The 14th International Conference New Trends in Fatigue and Fracture NT2F14 „Fatigue and fracture at all scales“, 2014Финансирање / пројекти:
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Maneski, Taško AU - Ignjatović, Dragan AU - Daničić, Darko AU - Milošević-Mitić, Vesna AU - Jovančić, Predrag AU - Petrović, Ana PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/5997 AB - Bucket wheel excavator ERs 1250 in Gacko has worked for over 30 years. Excavator was working in very difficult conditions because it was exploited very solid material which negatively affected the dynamic behavior of the whole structure. Bucket wheel boom of the excavator is a single tube approximately 20m long. Finite element method was applied in calculations and the results are presented in the paper. The first calculation was performed for two load cases. One case was for the complete usage of engine power (the worst case) and the other was static analysis based on the inertial load of the bucket wheel and the drive group. Measurements of deformations and vibrations on the bucket wheel boom were performing during process of digging. Strain and stress measurements were obtained using inductive sensors and eddy current sensors. These sensors measure the change in length between the magnets placed on the measuring points. Experiments and calculations gave the same results that show the negative effect of dynamic forces acting on a boom. Earlier this year the crack was discovered in a cylindrical root of the tube nearly 270 of its scope. Previously derived calculations and measurements didn’t indicate the possibility of the crack appearance. Therefore, additional simulations of load were performed (horizontal and vertical unit loads) that could cause the crack. Numerical analysis has shown that the horizontal force in the amount of 1000 kN could cause such a large crack. C3 - The 14th International Conference New Trends in Fatigue and Fracture NT2F14 „Fatigue and fracture at all scales“ T1 - Diagnosis the cause of the crack on the bucket wheel boom on the excavator ERs 1250 Gacko UR - https://hdl.handle.net/21.15107/rcub_machinery_5997 ER -
@conference{ author = "Maneski, Taško and Ignjatović, Dragan and Daničić, Darko and Milošević-Mitić, Vesna and Jovančić, Predrag and Petrović, Ana", year = "2014", abstract = "Bucket wheel excavator ERs 1250 in Gacko has worked for over 30 years. Excavator was working in very difficult conditions because it was exploited very solid material which negatively affected the dynamic behavior of the whole structure. Bucket wheel boom of the excavator is a single tube approximately 20m long. Finite element method was applied in calculations and the results are presented in the paper. The first calculation was performed for two load cases. One case was for the complete usage of engine power (the worst case) and the other was static analysis based on the inertial load of the bucket wheel and the drive group. Measurements of deformations and vibrations on the bucket wheel boom were performing during process of digging. Strain and stress measurements were obtained using inductive sensors and eddy current sensors. These sensors measure the change in length between the magnets placed on the measuring points. Experiments and calculations gave the same results that show the negative effect of dynamic forces acting on a boom. Earlier this year the crack was discovered in a cylindrical root of the tube nearly 270 of its scope. Previously derived calculations and measurements didn’t indicate the possibility of the crack appearance. Therefore, additional simulations of load were performed (horizontal and vertical unit loads) that could cause the crack. Numerical analysis has shown that the horizontal force in the amount of 1000 kN could cause such a large crack.", journal = "The 14th International Conference New Trends in Fatigue and Fracture NT2F14 „Fatigue and fracture at all scales“", title = "Diagnosis the cause of the crack on the bucket wheel boom on the excavator ERs 1250 Gacko", url = "https://hdl.handle.net/21.15107/rcub_machinery_5997" }
Maneski, T., Ignjatović, D., Daničić, D., Milošević-Mitić, V., Jovančić, P.,& Petrović, A.. (2014). Diagnosis the cause of the crack on the bucket wheel boom on the excavator ERs 1250 Gacko. in The 14th International Conference New Trends in Fatigue and Fracture NT2F14 „Fatigue and fracture at all scales“. https://hdl.handle.net/21.15107/rcub_machinery_5997
Maneski T, Ignjatović D, Daničić D, Milošević-Mitić V, Jovančić P, Petrović A. Diagnosis the cause of the crack on the bucket wheel boom on the excavator ERs 1250 Gacko. in The 14th International Conference New Trends in Fatigue and Fracture NT2F14 „Fatigue and fracture at all scales“. 2014;. https://hdl.handle.net/21.15107/rcub_machinery_5997 .
Maneski, Taško, Ignjatović, Dragan, Daničić, Darko, Milošević-Mitić, Vesna, Jovančić, Predrag, Petrović, Ana, "Diagnosis the cause of the crack on the bucket wheel boom on the excavator ERs 1250 Gacko" in The 14th International Conference New Trends in Fatigue and Fracture NT2F14 „Fatigue and fracture at all scales“ (2014), https://hdl.handle.net/21.15107/rcub_machinery_5997 .