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Smart Structures and Systems Volume 12, Number 5, November 2013 , pages 483-499 DOI: https://doi.org/10.12989/sss.2013.12.5.483 |
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Piezoceramic d15 shear–induced direct torsion actuation mechanism: a new representative experimental benchmark |
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Pelin Berik, Ayech Benjeddou and Michael Krommer
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| Abstract | ||
| new piezoceramic d15 shear-induced torsion actuation mechanism representative benchmark is proposed and its experimentations and corresponding 3D finite element (FE) simulations are conducted. For this purpose, a long and thin smart sandwich cantilever beam is dimensioned and built so that it can be used later for either validating analytical Saint Venant-type solutions or for analyzing arm or blade-based smart structures and systems applications. The sandwich beam core is formed by two adjacent rows of 8 oppositely axially polarized d15 shear piezoceramic patches, and its faces are dimensionally identical and made of the same glass fiber reinforced polymer composite material. Quasi-static and static experimentations were made using a point laser sensor and a scanning laser vibrometer, while the 3D FE simulations were conducted using the commercial software ABAQUS R The measured transverse deflection by both sensors showed strong nonlinear and hysteretic (static only) variation with the actuation voltage, which cannot be caught by the linear 3D FE simulations. | ||
| Key Words | ||
| piezoceramic d15 shear actuation; direct torsion actuation mechanism; piezoelectric composite beam; quasi–static and static experiments; finite element simulation | ||
| Address | ||
| Pelin Berik and Michael Krommer : Institute for Technical Mechanics, Johannes Kepler University, 4040 Linz, Austria Ayech Benjeddou : Structures, Institut Superieur de Mecanique de Paris, 93400 Saint Ouen, France | ||