dc.creator | Maneski, Taško | |
dc.creator | Ignjatović, Dragan | |
dc.creator | Daničić, Darko | |
dc.creator | Milošević-Mitić, Vesna | |
dc.creator | Jovančić, Predrag | |
dc.creator | Petrović, Ana | |
dc.date.accessioned | 2023-03-13T13:39:45Z | |
dc.date.available | 2023-03-13T13:39:45Z | |
dc.date.issued | 2014 | |
dc.identifier.uri | https://machinery.mas.bg.ac.rs/handle/123456789/5997 | |
dc.description.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. | sr |
dc.language.iso | en | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/35040/RS// | sr |
dc.rights | restrictedAccess | sr |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | The 14th International Conference New Trends in Fatigue and Fracture NT2F14 „Fatigue and fracture at all scales“ | sr |
dc.subject | finite elements | sr |
dc.subject | experiment | sr |
dc.subject | crack | sr |
dc.subject | excavator | sr |
dc.title | Diagnosis the cause of the crack on the bucket wheel boom on the excavator ERs 1250 Gacko | sr |
dc.type | conferenceObject | sr |
dc.rights.license | BY | sr |
dc.citation.rank | M33 | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_machinery_5997 | |
dc.type.version | publishedVersion | sr |