| Title |
Dynamic Characteristics and Piezoelectric Effect of Energy Harvesting Block Structures with Different Shapes |
| Authors |
노명현(Noh, Myung-Hyun) ; 이상열(Lee, Sang-Youl) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.6A.379 |
| Keywords |
에너지 블록구조;자유진동;유한요소 해석 energy block;multi-layer;free vibration;finite element analysis |
| Abstract |
This study investigates free vibration characteristics of new energy harvesting multi-layer block structures with different geometrical shapes using solid and shell finite elements and evaluate their piezoelectric effect on experiments. The two and three-dimensional finite element (FE) delamination models for block structures described in this paper is attractive not only because it shows excellent accuracy in analysis but also it shows the entire vibration mode shape. The FE model using ABAQUS is used for studying free vibrations of multi-layer block structures for various tip mass and PZT. In particular, new results reported in this paper are focused on the significant effects of the global and local vibration modes for various parameters, such as size of block shape, existence of tip mass and hole, and location of tip mass and PZT. In addition, we evaluate the power generation capacity of developed energy block structures through a laboratory-scale experiment. |