Article (Scientific journals)
Mechanical Buckling of Composite Panels with/without Cutouts
Pascan, Oana; Zhang, Weihong; Ponthot, Jean-Philippe
2012In International Journal of Plant Engineering and Management, 17 (2), p. 65-76
Peer reviewed
 

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Keywords :
buckling; composite materials; cutouts
Abstract :
[en] A simpli ed analytical solution suitable for simple stacking sequences was developed using the Euler buckling theory, the structure's equations of equilibrium and laminate panel mathematical formulation. Comparing these results with numerical results reveals the ac- curacy of the method and even more, allows us to validate the numerical analysis. Therefore, two important results are obtained : a simpli ed analytical solution for the buckling problem and vali- dation of the numerical results. Another important and novel nding is related to the in uence of the angle ply orientation and of the cutouts, on the buckling load. Under symmetrical boundary conditions and loading case, rectangular panels with elliptical cutouts, give better results for 90 oriented plies than for 0 oriented ones. With a compression load applied in the X direction, and with material properties 10 times better in X direction than in Y direction, the best results are obtained when the load is aligned with the Y direction associated to the material reference frame. Moreover, panels with cutouts seem to behave better than panels without cutouts under certain ply orientation angles.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Pascan, Oana
Zhang, Weihong;  Northwestern Polytechnical University, Xi'an, China
Ponthot, Jean-Philippe  ;  Université de Liège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Language :
English
Title :
Mechanical Buckling of Composite Panels with/without Cutouts
Publication date :
2012
Journal title :
International Journal of Plant Engineering and Management
ISSN :
1007-4546
Publisher :
Xibei Gongye Daxue, China
Volume :
17
Issue :
2
Pages :
65-76
Peer reviewed :
Peer reviewed
Available on ORBi :
since 29 July 2015

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