Untypical cases and incorrect results of vibration tests

• Autorzy: Wiśniewski W.
• Języki publikacji: EN

Abstrakty

EN

The vibration analysis is the study of the behaviour and dynamic properties of mechanical structures under actuation by harmonic vibration forces. The aim of resonance tests of the structures is the experimental delimitation of frequencies and the modes of resonance vibrations. vibration analysis, or more precisely experimental vibration analysis, is the field of measuring and analyzing the dynamic response of mechanical structures when excited by a mechanical input. The broadly applied method of research relies on the harmonic actuation of vibrations and the measurement of respective parameters. Examples would include measuring the vibration of an aircraft load bearing structure when it is attached to an electromagnetic force actuator. Current vibration testing systems are composed of actuators set with their control and powering circuits, the vibration measurement transducers (typically accelerometers), an analog-to-digital converter to digitize analog instrumentation signals) and a system host computer to analyze the data and view it. The result of researcher own accumulated experiences and those experiences knownfrom the literature create the possibility for design o f a stochastic frame model describing, what type of resonances are possible to expect in the given or other type of structure. The cases submitted below became perceived and tested in the course of research of several aircraft, glider and helicopter designs in the Resonance Tests Program of the Institute of Aviation

Słowa kluczowe

EN

vibration tests; vibration analysis; resonance tests; 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: 2009
• Tom: Vol. 16, No. 1
• Strony: 591--597
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Wiśniewski W.

Bibliografia

• [1] The European Charter for Researchers, Office for Official Publications of the European Communities, ISBN 92-894-9311-9, Luxembourg 2005.
• [2] Deck, A., Contribution à l'étude d'une méthode semi-automatique d'appropriation des forces d'excitation dans l'essai au sol d'une structure d'avion, Châtillon 1968.
• [3] Wisniowski, W., Sposób określenia wielkości luzów w konstrukcjach mechanicznych zwłaszcza lotniczych, UP Patent RP nr 149 916 P256384, Patent RP nr 149 916, Zgłoszenie P256384, Warszawa 1987.
• [4] Wisniowski, W., Sposób pomiaru drgań przy pomocy tensometrów skalowanych dynamicznie zgodnie z postaciami drgań własnych w zastosowaniu zwłaszcza do badań konstrukcji lotniczych. UP Patent RP nr 4(51) G01H Al(21) 270354 (22) 88 01 29, Warszawa 1988.
• [5] Wisniowski, W., Model calibration of vibration sensors, Journal of Theoretical and Applied Mechanics, Vol. 31, ISSN 1429-2955, Polish Society of Theoretical and Applied Mechanics Warsaw 1993.
• [6] Wisniowski, W., Research of the dynamic properties of structures the models of interpretation, Journal of KONES, Vol. 15, No. 3, pp. 561-565, Warsaw 2008.