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Proceedings Paper

Dual field finite element simulations of piezo-patches on fabrics: a parametric study
Author(s): Sania Waqar; Jesse M. McCarthy; Arvind Deivasigamani; Chun H. Wang; Lijing Wang; Floreana Coman; Sabu John
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Paper Abstract

There is an increasing demand for powering on-person-devices (for communications, health-care purposes, and soldier protection) without the burden of the parasitic weight and toxicity of conventional batteries. This demand calls for an alternative power source from fibre-sized piezoelectric generators that can be integrated into garments. These piezopatches convert human movement induced mechanical strain on the fabric into electrical energy. In this paper, a dualfield computational analysis, combining harmonic and piezoelectric models, has been undertaken using the ANSYS Finite Element package. A Polyvinylidene Fluoride (PVDF) patch bonded to a material representative of a flexible fabric has been modeled in ANSYS. The electrodes are connected to a resistor that is matched to the piezo properties and loading conditions. The parametric variables used in this study include: surface area of the piezo-patches, aspect ratio, input force amplitude and the operational frequency. The complex interaction of these variables to the power output is explored and discussed in the context of the intended application. It is observed that the maximum output occurs at 5Hz for an optimal dimension of 400mm2 which makes it feasible as an energy harvesting system for low energy selfpowered electronics such as portable and wearable medical and communication devices.

Paper Details

Date Published: 9 August 2013
PDF: 11 pages
Proc. SPIE 8793, Fourth International Conference on Smart Materials and Nanotechnology in Engineering, 87931K (9 August 2013); doi: 10.1117/12.2022516
Show Author Affiliations
Sania Waqar, RMIT Univ. (Australia)
Jesse M. McCarthy, RMIT Univ. (Australia)
Arvind Deivasigamani, RMIT Univ. (Australia)
Chun H. Wang, RMIT Univ. (Australia)
Lijing Wang, RMIT Univ. (Australia)
Floreana Coman, FCST Pty. (Australia)
Sabu John, RMIT Univ. (Australia)

Published in SPIE Proceedings Vol. 8793:
Fourth International Conference on Smart Materials and Nanotechnology in Engineering
Jayantha A. Epaarachchi; Alan Kin-tak Lau; Jinsong Leng, Editor(s)

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