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Piezoelectric energy harvesting is one keytechnology for the realization of autarchic sensor nodes in mechanically excited environments. The optimization of piezoelectric energy harvesting systems, however, remains a challenging task, since the harvested energy depends on the behavior and interaction of various subsystems. Common approaches focus on optimizing parts of the energy harvesting system,...
We propose a modified modal reduction technique for piezoelectric composite structures, based on the Finite Element Method. The geometry and different materials involved in composite structures are described by Finite Element models with sufficient spatial discretization. In order to enable efficient computation, we reduce the model order by employing mechanical mode shapes of the coupled problem...
We present an experimental and simulative approach for a rotating energy harvester. An experimental setup is introduced that prescribes controlled accelerations in different directions to a rotating shaft holding a harvesting structure. We show measurement results for a cantilever-type piezoelectric harvester and compare them to simulations. The finite element method (FEM) was applied for numerical...
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