Topology optimization of a cantilevered piezoelectric energy harvester using stress norm constraints
Wein F, Kaltenbacher M, Stingl M (2013)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2013
Journal
Publisher: Springer Verlag (Germany)
Book Volume: 48
Pages Range: 173-185
Journal Issue: 1
DOI: 10.1007/s00158-013-0889-6
Abstract
Vibrational piezoelectric energy harvesters are devices which convert ambient vibrational energy into electric energy. Here we focus on the common cantilever type in which an elastic beam is sandwiched between two piezoelectric plates. In order to maximize the electric power for a given sinusoidal vibrational excitation, we perform topology optimization of the elastic beam and tip mass by means of the SIMP approach, leaving the piezoelectric plates solid. We are interested in the first and especially second resonance mode. Homogenizing the piezoelectric strain distribution is a common indirect approach increasing the electric performance. The large design space of the topology optimization approach and the linear physical model also allows the maximization of electric performance by maximizing peak bending, resulting in practically infeasible designs. To avoid such problems, we formulate dynamic piezoelectric stress constraints. The obtained result is based on a mechanism which differs significantly from the common designs reported in literature.
Authors with CRIS profile
Fabian Wein
Lehrstuhl für Angewandte Mathematik
Michael Stingl
Lehrstuhl für Angewandte Mathematik (Kontinuierliche Optimierung)
Additional Organisation(s)
Involved external institutions
Austria (AT)How to cite
APA:
Wein, F., Kaltenbacher, M., & Stingl, M. (2013). Topology optimization of a cantilevered piezoelectric energy harvester using stress norm constraints. Structural and Multidisciplinary Optimization, 48(1), 173-185. https://dx.doi.org/10.1007/s00158-013-0889-6
MLA:
Wein, Fabian, Manfred Kaltenbacher, and Michael Stingl. "Topology optimization of a cantilevered piezoelectric energy harvester using stress norm constraints." Structural and Multidisciplinary Optimization 48.1 (2013): 173-185.
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