Browsing by Author "Cunha, Rui Filipe Martins Fernandes"
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- Structural analysis of a variable-span wing-boxPublication . Cunha, Rui Filipe Martins Fernandes; Gamboa, Pedro VieiraThis dissertation describes the work done to analyse the wing-box of a variable-span wing. Based on previous work in the CHANGE project the main objective of this study is the experi-mental analysis of the wing-box structure’s prototype build at Universidade da Beira Interior, one of the CHANGE project partners. Surrounding the preliminary design of this project, a nu-merical model written, concerning a parallel work, was modified and used to analyse the mass and displacement variations according to the moving fraction and semi-span of the morphing wing-box. It was first dimensioned the jig to statically validate this structural model that con-cerns the following work. Through the use of Computer Aided Design tools and numerical cal-culation, it was designed and built an experimental setup. Based on computational structural analysis tools, the numerical model allowed the parametric study of the preliminary wing-box design comprising the mass and displacement changes in accordance of the two following pa-rameters: moving fraction and semi-span. In order to complement this study, various configu-rations of the preliminary wing-box were analysed such as the reduction of the composite sand-wich skin’s thickness. With the help of programming tools two polynomial functions were cal-culated from the respective variations previous described. Finally, experimental tests were performed on the prototype of the preliminary wing design. The numerical model was validated and the values are in good agreement