A. Manes, A. Gilioli, M. Giglio

DOI Number: N/A

Conference number: IFASD-2017-125

This paper is aimed at the investigation on the building of accurate numerical structural model aimed to investigate in the Limit Cycle Oscillation (LCO) phenomenon which is an actual issue on several aircraft configurations and which is generally encountered in external store configurations that are theoretically predicted to be flutter sensitive. Primary tools used in the industry are based on linearized and reduced order models. These models exhibit great difficulties in the prediction and reproduction of LCO most likely due to non-linear effects. Therefore, in the present paper, a numerical non-linear Finite Element Model (FEM) has been built in order to reproduce the mechanical behaviour of a representative structure of an aircraft pylon. Particular attention has been paid to highlight the sources of non-linearity: the friction between the spring and the payload has been identified as the main cause of the nonlinear behaviour.

Read the full paper here

In Categories: 1.Events, Computational 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.