713 二層複合円板における熱弾性変位を制御するステップ状印加電位の決定

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This paper discusses a displacement control problem in a two-layered composite plate consisting of a transversely isotropic structural layer onto which a piezoceramic layer of crystal class 6mm is perfectly bonded. It is considered that some electrodes are metallized on the top free surface in a concentric configuration. When an axisymmetric heating temperature acts on the bottom free surface, the thermally induced elastic displacement on the structural layer surface could be controlled by applying a different electric voltage to each electrode. The applied electric potentials are determined by an approximate optimization using neural networks so that the difference between the desired and thermally induced elastic displacement distributions is minimized. Finally, numerical results for the controlled displacement distribution and applied electric potentials are illustrated graphically.
2003-09-23