Flutter Analysis of Functionally Graded Panel Based on Neutral Surface

Abstract:

In this work, flutter behavior of Functionally Graded Material (FGM) panel is investigated based on the physical neutral surface. The panel is made with ceramic and metal according to linear rule of mixture. The virtual work principle is applied including pressure due to aero-dynamic load. Then governing equations are derived using von Karman's strain-displacement relations. Conventionally, mid-plane is used as a reference plane for laminate structures, while this concept is not appropriate for materially asymmetry of a panel such as FGMs. For this reason, physical neutral surface is defined as the origin of coordinate system in the structure. Numerical results are discussed and compared with previous studies. Finally, flutter behavior is investigated according to the volume fractions, temperature distributions and aero-dynamic pressures.

• Periodical: Advanced Materials Research (Volume 1125)
• Pages: 526-530
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1125.526
• Online since: October 2015
• Authors: Jung Hwan Kim, Ji Hwan Kim*
• Keywords: Aero-Dynamic Pressure, Flutter Analysis, Neutral Surface, Principle of Virtual Work

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