4 June 1999 Optimal vibration control of adaptive aircraft wings carrying externally mounted stores and exposed to blast loading
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Abstract
A study of optimal vibration control of aircraft wings carrying externally mounted stores and exposed to blast loading is presented. The wing structure is modeled as a thin- walled beam of closed cross-section contour, and a number of non-classical features such as transverse shear, secondary warping, and anisotropy of the constituent materials are included. The wing structure can carry underwing and/or tip stores. The control is achieved via the use of actuating and sensing capabilities provided by piezoelectric devices which are bonded or embedded into the host structure. The cases of piezoactuators spread over the entire span of the structure, or in the form of a patch are considered, and issues related with the influence of patch location and size upon the vibration control efficiency of wings carrying external stores are discussed. Other issues related with the minimization of the required input power and of those generated by the inclusion/discard in the quadratic performance index of time- dependent external excitations are also addressed.
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Sungsoo Na, Liviu I. Librescu, "Optimal vibration control of adaptive aircraft wings carrying externally mounted stores and exposed to blast loading", Proc. SPIE 3667, Smart Structures and Materials 1999: Mathematics and Control in Smart Structures, (4 June 1999); doi: 10.1117/12.350099; https://doi.org/10.1117/12.350099
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