%0 Journal Article %T Resonant Frequency Reduction of Piezoelectric Voltage Energy Harvester by Elastic Boundary Condition %A Ong, Zhi Chao %A Huang, Yu-Hsi %A Chou, Sheng-Lun %J Journal of Mechanics %V 35 %N 6 %P 779-793 %D 2019-12-01 %I Oxford University Press %~ DeepDyve