Research of the dynamic properties of structures the models of interpretation

• Autorzy: Wiśniowski W.
• Języki publikacji: EN

Abstrakty

EN

Experimental research of the dynamic properties of structures is performed during of prototype perfectioning, current exploitation and even after the withdrawal from the exploitation for the estimation of the residual durabilities. The aim for research of the dynamic properties of structures is the assurance of its safety, reliability, economic management and comfort. Researcher records the amplitudes of vibrations in the function of the actuation frequencies. Local raise of the amplitude is qualified as resonance. From the researcher point of view, the shape of resonance curves justifies the discrimination of two types of phenomena's: „single resonance" and „close frequencies resonance". For better understanding of these occurrences „the models of interpretation" were proposed. Up to three models of interpretation were assigned to the single resonance: one-degree-of-freedom system, one-degree-of-freedom system with share of the backlashes, two one-degree-of-freedom systems with the same frequencies. From above reasoning, the conclusion results that researcher can expect that the preliminary isolated single resonance belongs to one from the three, mentioned above cases. The judgment of these occurrences, just as the disentanglement of relations in the resonance pair with close frequencies, determines next challenge for the researcher.

Słowa kluczowe

EN

transport; aviation; vibration; structure testing; resonance analysis; modal analysis

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2008
• Tom: Vol. 15, No. 3
• Strony: 561--565
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Wiśniowski W.

• Institute of Aviation Aleja Krakowska 110/114, 02-256 Warsaw, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Bijak-Żochowski, M., Mechanika materiałów i konstrukcji, Oficyna Wydawnicza Politechniki Warszawskiej, Warszawa 2006.
• [2] Capell, S., Green, S., Curless, B., Duchamp, T., Popovic, Z., Interactive skeleton-driven dynamic deformations, Proceedings of SIGGRAPH 2002, July 2002.
• [3] Gallina, A., Martowicz, A., Uhl, T., An Application of Response Surface Methodology in the Field of Dynamic Analysis of Mechanical Structures Considering Uncertain Parameters, ISMA2006 Conference on Noise and Vibration Engineering, Leuven, Belgium 2006.
• [4] Hanss, M., The Transformation Method for the Simulation and Analysis of Systems with Uncertain Parameters, Fuzzy Sets and Systems, 130(3), 277-289, 2002.
• [5] Kleiber, M., (Ed.), Komputerowe metody mechaniki ciał stałych, PWN, Warszawa 1995.
• [6] Moens, D., A Non-probabilistic Finite Element Approach for Structural Dynamic Analysis with Uncertain Parameters, Ph.D. Thesis, KU Leuven, Departement Werktuigunde, Leuven 2002.
• [7] Rajbhandari, S . P., An Approach to Modelling and Predicting Impact Damage in Composite Structures, ICAS 2002 Congress, pp. 862.1-862.10, 2002.