The Idea of the Selection of PZT Beam Interaction Forces in Active Vibration Protection Problem
A. Brańskia, M. Borkowskia and S. Szelab
aLaboratory of Acoustics, WEiI Rzeszów University of Technology, W. Pola 2, 35-959 Rzeszów, Poland
bInstitute of Technology University of Rzeszów, Rejtana 16c, 35-959 Rzeszów, Poland
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The paper concerns an active vibration protection (p reduction) of the structure. This problem corresponds to the active vibration reduction (a reduction). The quantity and effectivness of the a-/p- reduction, measured with reduction and effectiveness coefficient respectively, depends on, inter alia, the PZT distribution on the structure subdomains with the largest curvatures (quasi optimal distribution) are considered. The aim of this paper is to determine such interacting forces PZT structure, assuming QO distribution of PZTs, which maximize the effectiveness of p reduction. The beam clamped at one end, vibrating separately with first three modes, is chosen as the research object. The interacting forces are searched requiring that the shear force and bending moment at the clamped side are equal to zero. The total p reduction is achieved for separate modes. Assuming the QO distribution of the PZTs, the best p effectiveness is achieved. The validation of theoretical considerations is confirmed numerically.
DOI: 10.12693/APhysPolA.118.17
PACS numbers: 46.70.De, 02.60.Pn, 46.40.-f, 07.10.Fq