Heinz Köppe

TL;DR: In this article, the piezoelectric effect is studied for bending and traction tests for two types of structure configurations: homogeneous and composite structures, where the input material properties are taken from the overall coefficients reported by the Asymptotic Homogenization Method (AHM).

TL;DR: In this article, the authors considered thin-walled active structures with laminate architecture featuring fiber reinforced composite as a passive material and utilizing piezoelectric patches as both sensor and actuator components.

TL;DR: In this article, a degenerated shell element is developed for modeling purposes and a set of numerical analyses is performed in order to demonstrate the additional stiffening effect caused by the refined functions for the electric quantities.

TL;DR: A direct control algorithm described in the paper is suggested as a solution to the control problem and provides preserving the boundness of the system states and adaptive gains, with small trackings error over large ranges of non-ideal conditions and uncertainties.

TL;DR: In this article, the influence of higher order functions for the electric field on the accuracy of piezoelectric active thin-walled structures is discussed, and geometrical non-linearities in the behavior of the considered structures are considered with respect to static and dynamic cases.