{"title":"Numerical Study for Structural Design of Composite Rotor with Crack Initiation","authors":"A. Chellil, A. Nour, S. Lecheb, H. Mechakra, A. Bouderba, H. Kebir","volume":96,"journal":"International Journal of Aerospace and Mechanical Engineering","pagesStart":2069,"pagesEnd":2073,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10000120","abstract":"
In this paper, a coupled damage effect in the
\r\ninstability of a composite rotor is presented, under dynamic loading
\r\nresponse in the harmonic analysis condition. The analysis of the
\r\nstress which operates the rotor is done. Calculations of different
\r\nenergies and the virtual work of the aerodynamic loads from the rotor
\r\nblade are developed. The use of the composite material for the rotor
\r\noffers a good stability.
\r\nNumerical calculations on the model developed prove that the
\r\ndamage effect has a negative effect on the stability of the rotor.
\r\nThe study of the composite rotor in transient system allowed
\r\ndetermining the vibratory responses due to various excitations.<\/p>\r\n","references":"[1] M. Imregun and D. J. Ewins. Complex modes - Origins and limits. In\r\nProceedings of the 13th IMAC, 1995.\r\n[2] T. Gm\u00fcr. Dynamique des structures. Presses polytechniques et\r\nuniversitaires ro-mandes, 1997.\r\n[3] M. Lalanne and G. Ferraris. Rotor dynamics prediction in engineering.\r\nJohn Wiley & Sons, 1990.\r\n[4] W. J. Chen. Energy analysis to the design or rotor-bearing systems.\r\nJournal of Engineering for Gas Turbines and Power, 119:411-417, Avril\r\n1997.\r\n[5] J. N. Sundermeyer and R. L. Weaver. On crack identification and\r\ncharacterization in a beam by nonlinear vibration analysis. J. Sound\r\nvibration, 183 :857\u2013871, 1995. [6] J. B. Hamidi, L.and Piaud, Mansour W. M., and M. Massoud. Modal\r\nparameters for cracked rotors : models comparaison, J. Sound and\r\nVibration, 175(2) :265\u2013278, 1994.\r\n[7] P. F. Rizos, N. Aspragathos, and A. D. Dimarogonas. Identification of\r\ncrack location and magnitude in a cantilever beam from the vibration\r\nmodes. J. Sound and Vibration, 138(3) :381\u2013388, 1990.\r\n[8] J. Wauer. Modelling and formulation of equations of motion for cracked\r\nrotating shafts. Int. J. Solids Structures, 26(9) :901\u2013914, 1990.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 96, 2014"}