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Smart Structures and Systems Volume 5, Number 6, November 2009 , pages 613-632 DOI: https://doi.org/10.12989/sss.2009.5.6.613 |
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Dynamic displacement tracking of a one-storey frame structure using patch actuator networks: Analytical plate solution and FE validation |
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Daniel Huber, Michael Krommer and Hans Irschik
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| Abstract | ||
| The present paper is concerned with the design of a proper patch actuator network in order to track a desired displacement of the sidewalls of a one-storey frame structure; both, for the static and the dynamic case. Weights for each patch of the actuator network found in our previous work were based on beam theory; in the present paper a refinement of these weights by modeling the sidewalls of the frame structure as thin plates is presented. For the sake of calculating the refined weights approximate solutions of the plate equations are calculated by an extended Galerkin method. The solutions based on the analytical plate model are compared with three-dimensional Finite Element results computed in the commercially available code ANSYS. The patch actuator network is put into practice by means of four piezoelectric patches attached to each of the two sidewalls of the frame structures, to which electric voltages proportional to the analytically refined patch weights are applied. Analytical and numerical results coincide very well over a broad frequency range. | ||
| Key Words | ||
| plate theory; displacement tracking; piezoelectric actuator network. | ||
| Address | ||
| Daniel Huber; Linz Center of Mechatronics GmbH, Altenbergerstrasse 69, A-4040 Linz, Austria Michael Krommer and Hans Irschik; Institute for Technical Mechanics, Johannes Kepler University Linz, Altenbergerstrasse 69, A-4040 Linz, Austria | ||