Simulation of the frequency response of the ERC 1400 Bucket Wheel Excavator boom, during the excavation process

• Autorzy: Popescu Florin Dumitru , Radu Sorin Mihai , Andraș Andrei , Kertesz (Brînaș) Ildiko

Identyfikatory

DOI

10.2478/ntpe-2019-0016

• Języki publikacji: EN

Abstrakty

EN

The paper deals with the modal analysis and frequency response analysis of a bucket wheel excavator (BWE) boom, obtained by simulation, based on a virtual model of an existing BWE boom. The boom, which generally is realized as a spatial truss, is the most vulnerable subsystem of the BWE, being submitted to severe operational loads characterized by very pronounced cyclical, dynamic and stochastic variability. This vulnerability is the consequence of its shape and constructive parameters and the nature, source and character of the external exciting loads to which it is exposed. The classical approach recommended by standards and norms cannot predict the occurrence of failures caused by vibration, which produces fatigue due to the load’s cyclical variability and the deformation produced by resonant vibration of some constitutive elements. As exciting load we considered the operational forces acting on the bucket wheel. In this manner we can take into account the constructive features - with modal analysis, and the vibration regime - with frequency response analysis. The proposed method is useful both in the design phase of new load-bearing structures of truss type subjected to high-variability forces, and also in refurbishment or improvement phases of the existing structures of this kind.

Słowa kluczowe

EN

bucket wheel excavator; damping; frequency response; modal analysis; resonance

PL

wielonaczyniowa koparka kołowa; tłumienie; pasmo przenoszenia; analiza modalna; rezonans

• Wydawca: STE GROUP ; De Gruyter
• Czasopismo: New Trends in Production Engineering
• Rocznik: 2019
• Tom: Vol. 2, Iss. 1
• Strony: 153--167
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Popescu Florin Dumitru

• University of Petroșani, Romania

autor

Radu Sorin Mihai

• University of Petroșani, Romania

autor

Andraș Andrei

• University of Petroșani, Romania

autor

Kertesz (Brînaș) Ildiko

• University of Petroșani, Romania

Bibliografia

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