NDLI: A Strain Model for Piezoelectric Materials Operating in Highly Hysteretic Regimes

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Hu, Zhengzheng Ralph, C. Smith
Copyright Year	2011
Abstract	Piezoelectric materials exhibit hysteresis in the field-strain relation at essentially all drive levels. Furthermore, this non-linear relation is dependent upon both prestresses and dynamic stresses generated during employment of the materials. The accurate characterization of this nonlinear and hysteretic material behavior is critical for material characterization, device design, and model-based control design. In this paper, we will discuss the characterization of hysteresis using the homogenized energy model (HEM) framework. At the mesoscale, energy relations characterizing field and stress-dependent 90 and 180 degree switching are used to develop fundamental kernels or hysterons. Material and field nonhomogeneities are subsequently incorporated by assuming that certain parameters are manifestations of underlying densities. This yields a macroscopic model that accurately characterizes the fundamental material behavior yet is sufficiently efficient for optimization and control implementation. Attributes of the model will be illustrated through comparison to experimental data.
Sponsorship	Aerospace Division
Starting Page	241
Ending Page	249
Page Count	9
File Format	PDF
ISBN	9780791854723
DOI	10.1115/SMASIS2011-5073
Volume Number	ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2
Conference Proceedings	ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
Language	English
Publisher Date	2011-09-18
Publisher Place	Scottsdale, Arizona, USA
Access Restriction	Subscribed
Subject Keyword	Design Piezoelectric materials Stress Optimization
Content Type	Text
Resource Type	Article

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