| Title |
Segmentation of piezoelectric layers based on the numerical study of normal strain distributions in bimorph cantilevers vibrating in the second transverse mode / |
| Another Title |
Normalinių deformacijų pasiskirstymo optimalios formos bimorfinėse gembėse, žadinamose antruoju rezonansiniu dažniu, tyrimas ir pjezoelektrinių sluoksnių segmentavimas. |
| Authors |
Žižys, D ; Gaidys, R ; Daukševičius, R ; Ostaševičius, V |
| DOI |
10.5755/j01.mech.19.4.4477 |
| Full Text |
|
| Is Part of |
Mechanika.. Kaunas : KTU. 2013, vol. 19, no. 4, p. 451-458.. ISSN 1392-1207. eISSN 2029-6983 |
| Keywords [eng] |
piezoelectric energy harvesting ; total normal strain ; optimal shape cantilever |
| Abstract [eng] |
The objective of this paper is to study normal strain distribution along the length of a bimorph piezoelectric cantilever when it is excited at the second mode of transverse vibrations. The analysis was performed with three cantilevers of different shapes: rectangular, optimally-shaped with respect to the second transverse mode and optimally-shaped with respect to the third transverse mode of the rectangular cantilever. The eigen-frequencies of the vibration modes have the same value for all the cantilevers. Numerical study provided optimal segmentation of the piezoelectric layer boundaries, where tensile deformations change into compression ones and vice versa. It is concluded that the optimally-shaped cantilevers had narrower region of uncertainty and smaller ratio of total normal strain amount in the region of uncertainty versus rectangular cantilever. Total normal strain in the bimorph rectangular cantilever was smaller if compared to the optimized cantilevers due to larger losses of strain due to wide region of uncertainty. |
| Published |
Kaunas : KTU |
| Type |
Journal article |
| Language |
English |
| Publication date |
2013 |
| CC license |
|
