Abstract
The paper investigates the use of Macro Fiber Composite (MFC) actuators to activelycontrol thermally induced deformations in composite structures. Numerical andexperimental results are presented. A finite-element model is developed usingthe commercial software ABAQUS. The model includes structural, thermal andpiezoelectric fields. A control algorithm is implemented to control the responseof the structure in a closed loop actively. The control scheme is based on themeasure of the out-of-plane displacement of the structure. A few experiments areconducted to check the validity of the predictions and to test the feasibility ofusing MFC actuators for active control. To generate thermal distortion easily alaminated structure with an unsymmetric lay-up was placed in an oven. The oventemperature was varied to create thermal loading. The experimental and theoreticalresults correlate very well and demonstrate that the proposed method can be usedto perform active shape control of a structure subjected to thermal distortion.
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