A1 - Gnjatović Nebojša
A1 - Bošnjak, Srđan
A1 - Stefanović, Aleksandar
PB - Committee of Mining PAS
N2 - Sensitivity analysis of the dynamic response of both the designed and the actual models of a slewing superstructure with two masts to the variation of the counterweight mass and the degree of accuracy of the
approximation polynomials of the digging resistance was conducted in the paper. Spatial reduced dynamic models of the bucket wheel excavator SchRs 1600 were used as a basis for the presented investigations.
Based on the comparative analysis of the calculation results, the following conclusions were drawn: (a) mass of the counterweight has a significantly higher influence on the maximum intensities of accelerations
of the referent points than on the spectrum of natural frequencies, (b) the accuracy of approximations of the digging resistance and the maximum values of accelerations differ by an order of magnitude, for
the approximation trigonometric polynomial of the same number of harmonics.
VL - vol. 63
IS - No 2
KW - bucket wheel excavator
KW - dynamic response
KW - counterweight mass variation
KW - digging resistance approximation
T1 - The Dependency of the Dynamic Response of a Two Mast Bucket Wheel Excavator Superstructure on the Counterweight Mass and the Degree of Fourier Approximation of the Digging Resistance