Aeroelastic control of smart composite plate with delaminations

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

In this paper, aeroelastic performance of smart composite wing in the presence of delaminations is investigated. A control system is designed to enhance the dynamic stability of the delaminated composite wing. The refined higher order theory for analyzing an adaptive composite plate in the presence of delaminations is used. The theory accurately captures the transverse shear deformation through the thickness, which is important in anisotropic composites, particularly in the presence of discrete actuators and sensors and delaminations. The effects of delamination on the aeroelastic characteristics of composite plates are investigated. An active control system is designed to redistribute the loads and to minimize the effect of delamination. The pole placement technique is applied to design the closed loop system by utilizing piezoelectric actuators. Due to delamination, the significant changes in the natural frequencies of the lower modes are observed. And this causes the reduction on the flutter speed of the delaminated plate model. The aeroelastic control results show that controller makes the delaminated plate model behave like a normal plate. The controller also reduces a significant amount of RMS values of the gust response due to gust.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages131-142
Number of pages12
Volume3668
EditionI
StatePublished - 1999
EventProceedings of the 1999 Smart Structures and Materials - Smart Structures and Integrated Systems - Newport Beach, CA, USA
Duration: Mar 1 1999Mar 4 1999

Other

OtherProceedings of the 1999 Smart Structures and Materials - Smart Structures and Integrated Systems
CityNewport Beach, CA, USA
Period3/1/993/4/99

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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  • Cite this

    Nam, C., Chattopadhyay, A., & Kim, Y. (1999). Aeroelastic control of smart composite plate with delaminations. In Proceedings of SPIE - The International Society for Optical Engineering (I ed., Vol. 3668, pp. 131-142). Society of Photo-Optical Instrumentation Engineers.