Article metrics

  • citations in SCindeks: 0
  • citations in Google Scholar:[=>]
  • visits in previous 30 days:1
  • full-text downloads in 30 days:0
article: 6 from 12  
Back back to result list
FME Transactions
2013, vol. 41, iss. 4, pp. 298-304
article language: English
document type: unclassified

Assessment of the correlation between the numerical and experimental dynamic characteristics of the bucket wheel excavator in terms of the operational conditions
Wroclaw University of Technology, Faculty of Mechanical Engineering, Wroclaw, Poland



In the paper authors present their attempt in the validation process of the numerical model on the basis of experimental results. The Modal Assurance Criterion between the numerical and experimental model was selected as the indicating factor. Moreover, changes in frequencies and the degrees of freedom influencing the most the correlation level were reconsidered. The numerical and experimental models, in most cases, did not cover the influence of the operational load on the dynamic characteristic of the construction. In the new, operational approach, the change in the numerical model composition must be reconsidered, while the old one is no longer valid. Modal analysis performed out of the operational load, give good results but does not represent actual state of the construction in operation. In that case, we have two separate systems with different dynamic characteristics. Identification of the modal model with use of the Operational Modal Analysis gives the information about the object in operation which is a real point of the interest.



*** (2008) Eurokod 7: Projektowanie geotechniczne: Czfšć 1. zasady ogolne PN-EN 1997-1
*** (1990) Metody pomiarow i oceny drgan maszyn pod wzglçdem bezpieczenstwa i higieny pracy. PN-N-01357
Arczewski, K., Pietrucha, J., Szuster, J. (2008) Drgania Ukladöw Fizycznych. Oficyna Wydawnicza Politechniki Warszawskiej
Bošnjak, S.M., Zrnić, N.Đ. (2012) Dynamics, failures, redesigning and environmentally friendly technologies in surface mining systems. Archives of Civil and Mechanical Engineering, 12(3): 348-359
Bošnjak, S., Zrnić, N., Simonović, A., Momčilović, D. (2009) Failure analysis of the end eye connection of the bucket wheel excavator portal tie-rod support. Engineering Failure Analysis, 16(3): 740-750
Bošnjak, S., Zrnić, N., Oguamanam, D. (2006) On the dynamic modeling of bucket wheel excavators. FME Transactions, 34(4): 221-226
Buchacz, A., Płaczek, M. (2010) Development of Mathematical Model of a Mechatronic System. Solid State Phenomena, 164: 319-322
Czmochowski, J. (2008) Identyfikacja Modeli modalnych maszyn urabiajqcych w gornictwie wçgla brunatnego. Oficyna Wydawnicza Politechniki Wroclawskiej, in Polish
Derlukiewicz, D., Karliński, J., Iluk, A. (2010) The Operator Protective Structures Testing for Mining Machines. Solid State Phenomena, 165: 256-261
Gottvald, J., Kala, Z. (2011) Variance-based sensitivity analysis of tangential digging forces of the bucket wheel excavator SchRs 1320. in: Int. Conference on Recent Researches in Engineering and Automatic Control, Puerto De La Cruz, Proceedings, str. 204-209
Heylen, W., Lammens, S., Sas, P. (2007) Modal analysis theory and testing. Leuven: Katholieke Universiteit
Ho, C., Lang, Z.Q., Sapiński, B., Billings, S.A. (2013) Vibration isolation using nonlinear damping implemented by a feedback-controlled MR damper. Smart Materials and Structures, 22(10): 105010
Jamroziak, K., Kosobudzki, M. (2013) Assessment of the comfort of passenger transport in special purpose vehicles. Eksploatacja i niezawodnosc - Maintenance and reliability, 15(1): 25-30
Jonak, J., Gajewski, J. (2006) Operating diagnostics and monitoring issues of selected mining belt conveyers. Eksploatacja i niezadownosc - Maintenance and reliability, vol. 4, 74-78
Karliński, J., Ptak, M., Działak, P. (2013) Simulation tests of roll-over protection structure. Archives of Civil and Mechanical Engineering, 13(1): 57-63
Kasztelewicz, Z. (2012) Koparki wielonaczyniowe i zwaiowarki tasmowe, technologia pracy. AGH Publishing House, in Polish
Pietrusiak, D., Moczko, P., Czmochowski, J. (2013) Field and numerical testing of the BWE SchRs4600.50 dynamic behavior. in: Topics in Modal Analysis, Volume 7: Proceedings of the 31st IMAC, A Conference on Structural Dynamics, Garden Grove
Rusinski, E., Dragan, S., Moczko, P., Pietrusiak, D. (2012) Implementation of experimental method of determining modal characteristics of surface mining machinery in the modernization of the excavating unit. Archives of Civil and Mechanical Engineering, 12(4): 471-476
Rusinski, E., Czmochowski, J., Pietrusiak, D. (2012) Problems of steel construction modal models identification. Eksploatacja i Niezawodnosc-Maintenance And Reliability, vol. 1, 54-61
Rusiński, E., Czmochowski, J., Pietrusiak, D. (2012) Selected problems in designing and constructing surface mining machinery. FME Transactions, vol. 40, br. 4, str. 153-164
Weber, F., Maślanka, M. (2012) Frequency and damping adaptation of a TMD with controlled MR damper. Smart Materials and Structures, 21(5): 055011
Weber, F., Feltrin, G., Maślanka, M., Fobo, W., Distl, H. (2009) Design of viscous dampers targeting multiple cable modes. Engineering Structures, 31(11): 2797-2800
Wilk, A., Madej, H., Figklus, T. (2011) Analysis of the possibility to reduce vibroactivity of the gearbox housing. Eksploatacja i niezadownocs - Maintenance and Reliability, vol. 2, 42-49