WEI-JIUN SU2019-09-252019-09-252018-01-019780791851951https://scholars.lib.ntu.edu.tw/handle/123456789/425083ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2018; San Antonio; United States; 10 September 2018 到 12 September 2018Copyright © 2018 ASME. In this study, a dual-beam piezoelectric energy harvester is proposed. This harvester consists of a main beam and an auxiliary beam with a pair of magnets attached to couple their motions. The potential energy of the system is modeled to understand the influence of the potential wells on the dynamics of the harvester. It is noted that the alignment of the magnets significantly influences the potential wells. A theoretical model of the harvester is developed based on the Euler-Bernoulli beam theory. Frequency sweeps are conducted experimentally and numerically to study the dynamics of the harvester. It is shown that the dual-beam harvester can exhibit hardening effect with different configurations of magnet alignments in frequency sweeps. The performance of the harvester can be improved with proper placement of the magnets.conference paperhttps://api.elsevier.com/content/abstract/scopus_id/8505722726710.1115/SMASIS2018-80862-s2.0-85057227267https://api.elsevier.com/content/abstract/scopus_id/85057227267