Control Design for Evolutionary Structural Systems (original) (raw)

Mathematical Aeroelasticity: A Survey

2015

A variety of models describing the interaction between flows and oscillating structures are discussed. The main aim is to analyze conditions under which structural instability (flutter) induced by a fluid flow can be suppressed or eliminated. The analysis provided focuses on effects brought about by: (i) different plate and fluid boundary conditions, (ii) various regimes for flow velocities: subsonic, transonic, or supersonic, (iii) different modeling of the structure which may or may not account for in-plane accelerations (full von Karman system), (iv) viscous effects, (v) an assortment of models related to piston-theoretic model reductions, and (iv) considerations of axial flows (in contrast to so called normal flows). The discussion below is based on conclusions reached via a combination of rigorous PDE analysis, numerical computations, and experimental trials.

Review on Flutter Control of Wings and Panels

IJMRAP, 2022

The flutter is a self-excited vibration under the interaction of inertial force, aerodynamic force, and elastic force of the structure. After flutter occurs, the plane structures will exhibit limited cycle oscillation, which will lead to catastrophic accidents or damage to structures. Therefore, it is a great theoretical and practical the importance of studying the properties of aerodynamic flexibility and flutter control to improve them aerodynamic stability of aircraft structures. This paper reviews recent developments in aerodynamic analysis and flutter control in wings and panel structures. The aerodynamic flap mechanism of the wings and flaps is shown. Search pneumatic flap methods for various structures that have been developed in recent years are briefly. Various control strategies including linear and nonlinear control algorithms as well as the results of active flutter control of wings and flaps foot. Finally, the paper ends with conclusions that highlight challenges development in elastic air analysis and flutter control, providing a brief overview in future investigations. This study aims to provide a comprehensive understanding of the analysis of aerodynamic elasticity and flutter control. It can also provide guidance on new wing design and plate structures to improve its aerodynamic stability.