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Aerothermoelastic Analysis of Cylindrical Piezolaminated Shells Based on Multi-field Layerwise Theory  

Oh, Il-Kwon (LG전자 DA연구소)
Shin, Won-Ho (한국과학기술원 기계공학과 항공우주공학전공)
Lee, In (한국과학기술원 기계공학과 항공우주공학전공)
Publication Information
Composites Research / v.15, no.3, 2002 , pp. 52-61 More about this Journal
Abstract
For the aerothermoelastic analysis of cylindrical piezolaminated shells, geometrically nonlinear finite elements based on the multi-field layerwise theory hale been developed. Applying a Han Krumhaar's supersonic piston theory, supersonic flutter analyses are performed for the cylindrical piezolaminted shells subject to thermal stresses and deformations. The possibility to increase flutter boundary and reduce thermoelastic deformations of piezolaminated panels is examined using piezoelectric actuations. Results show that active piezoelectric actuations can effectively increase the critical aerodynamic pressure by retarding the coalescence of flutter modes and compensating thermal stresses.
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