Effects of Geometric Nonlinearities on the Fidelity of Aeroelasticity Loads Analyses of Very Flexible Airframes
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The intensive design optimization process of airframes has the effect of decreasing the structural stiffness, inducing large deformations that can have significant effects on the flight loads and the trimming configuration of aircraft. Such changes in the dynamic response of airframes are captured by considerations of geometric nonlinearity effects in the formulation of the aeroelastic solutions. In this thesis, a number of methodologies to model structural geometric nonlinearity, ranging in complexity, are studied at length to assess their effectiveness and accuracy in aeroelasticity simulations. The adopted methodologies are also benchmarked against wellestablished commercial Finite Element Method (FEM) solution sequences, namely, MSC Nastran and ASWING.
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Copyright © 2019 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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salman-effectsofgeometricnonlinearitiesonthefidelity.pdf | 2023-05-05 | Public | Download |