Rotor vibratory response analysis using smart materials and aeroelastic control

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A control system is designed for vibratory load reduction as well as for aeroelastic control of composite rotor blades using segmented piezoelectric (PZT) actuators. The finite-state induced inflow model is used to calculate the aerodynamic loads. A composite box beam theory is used to model the primary load carrying structure in the rotor blade. In this theory, a higher order displacement field is used to model the individual walls of the composite box beam with surface bonded piezoelectric actuators. Based on these techniques, an integrated rotor vibratory load analysis technique is developed by coupling an unsteady aerodynamic model with the rotor blade dynamic model. Dynamic deformations of the blade in all three directions, flap, lead-lag and torsion are analyzed. Blade dynamic responses are solved in the modal domain. The nonlinear aerodynamic model is linearized for linear control system design. A pole placement technique is used to design the control system for vibratory load reduction. Significant reductions are observed in the modal responses of rotor with the closed loop control.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
PublisherAIAA
Pages2425-2433
Number of pages9
Volume4
StatePublished - 1999
EventProceedings of the 1999 AIAA/ASME/ASCE/AHS/ASC Structrures, Structural Dynamics, and Materials Conference and Exhibit - St. Louis, MO, USA
Duration: Apr 12 1999Apr 15 1999

Other

OtherProceedings of the 1999 AIAA/ASME/ASCE/AHS/ASC Structrures, Structural Dynamics, and Materials Conference and Exhibit
CitySt. Louis, MO, USA
Period4/12/994/15/99

ASJC Scopus subject areas

  • Architecture

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  • Cite this

    Chattopadhyay, A., Liu, Q., & Nam, C. (1999). Rotor vibratory response analysis using smart materials and aeroelastic control. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference (Vol. 4, pp. 2425-2433). AIAA.