Vibration and dynamic response control of adaptive cantilevers carrying externally mounted stores

Liviu I. Librescu; Sungsoo Na

doi:10.1117/12.276569

13 June 1997 Vibration and dynamic response control of adaptive cantilevers carrying externally mounted stores

Liviu I. Librescu, Sungsoo Na

Proceedings Volume 3039, Smart Structures and Materials 1997: Mathematics and Control in Smart Structures; (1997) https://doi.org/10.1117/12.276569
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

Abstract

The vibrational and dynamic response control of cantilevers carrying externally mounted stores is investigated. The cantilevered structure is modeled as a thin-walled beam of arbitrary cross-section and incorporates a number of non- classical effects such as transverse shear, secondary warping, anisotropy of constituent materials and heterogeneity of the construction. The control is carried out via a dynamic bending moment applied at the tip of the structure. A feedback control law relating the boundary moment with one of the kinematical variables characterizing the response of the beam is implemented, and its results upon the closed-loop eigenfrequencies and dynamic response are highlighted. The obtained numerical results emphasize the efficiency of this control methodology to enhance, without weight penalties, vibrational and dynamic response behavior and inhibit and even suppress the occurrence of the resonance phenomenon.

Citation Download Citation

Liviu I. Librescu and Sungsoo Na "Vibration and dynamic response control of adaptive cantilevers carrying externally mounted stores", Proc. SPIE 3039, Smart Structures and Materials 1997: Mathematics and Control in Smart Structures, (13 June 1997); https://doi.org/10.1117/12.276569

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