Smart Structures and Systems

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Dynamic displacement tracking of a one-storey frame structure using patch actuator networks: Analytical plate solution and FE validation

  • Huber, Daniel (Linz Center of Mechatronics GmbH) ;
  • Krommer, Michael (Institute for Technical Mechanics, Johannes Kepler University Linz) ;
  • Irschik, Hans (Institute for Technical Mechanics, Johannes Kepler University Linz)
  • Received : 2008.11.17
  • Accepted : 2009.05.13
  • Published : 2009.11.25
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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.

Keywords

References

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