A.F. Razaami, M.K.H.M. Zorkipli, N.A.Razak

DOI Number: N/A

Conference number: IFASD-2017-003

The aeroelastic behaviour of a wing oscillating in large pitch amplitudes with continuos nonlinear stiffness is examined by means of wind tunnel experiments and numerical simulations. The phenomena of interest is limit cycle oscillation resulted from stall flutter. The focus of the present work is the dynamic behaviour of aeroelastic system consisting of aerodynamic nonlinearity, prescribe and unprescribe structural nonlinearity. Unprescribe structural nonlinearity manifested through changes in stiffness property during limit cycle oscillation due to fatigue. The interaction of flow separation nonlinearity with structural nonlinearities is examined. The measured and simulated aeroelastic responses are analyzed and the bifurcation behavior of the dynamic system is characterized. The analysis shows that the bifurcation behaviour is dictated structural nor from the aerodynamic nonlinearity but by a combination of the two.

Read the full paper here

In Categories: 1.Events, Experimental Methods in Structural Dynamics and Aeroelasticity, IFASD 2017
Email
Print
LinkedIn
The paper above was part of  proceedings of a CEAS event and as such the author has signed a publication agreement to have their paper published in the repository. In the case this paper is found somewhere else CEAS always links to the other source.  CEAS takes great care in making the correct content available to the reader. If any mistakes are found  in the listings please contact us directly at papers@aerospacerepository.org and we will correct the listing promptly.  CEAS cannot be held liable either for mistakes in editorial or technical aspects, nor for omissions, nor for the correctness of the content. In particular, CEAS does not guarantee completeness or correctness of information contained in external websites which can be accessed via links from CEAS’s websites. Despite accurate research on the content of such linked external websites, CEAS cannot be held liable for their content. Only the content providers of such external sites are liable for their content. Should you notice any mistake in technical or editorial aspects of the CEAS site, please do not hesitate to inform us.