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Abstract

The scientific community has put significant effort into the development and optimization of sensors and actuators manufactured as piezoelectric composites with interdigitated electrodes (IDEs), well known as active fiber composite (AFC) and macro fiber composite (MFC). The advantages of these elements are their higher actuation performance and flexibility as compared to monolithic piezoceramic (PZT) elements. In general, their mechanical properties are calculated based on the classical lamination theory and the uniform field model (UFM). These two theories are well suited for predicting the stiffness and piezoelectric strain constants of the AFC or MFC. Although there are a variety of numerical investigations related to their electromechanical properties, there are no appropriate tools for accessing the stresses within these piezoelectric elements (including the inhomogeneous electric field conditions as well as the change in material properties). Explanations are given for this situation indicating the problems in investigating these types of piezoelectric elements with respect to stress states. In this work a finite element modeling approach is presented, which shows the influence of the IDE on the mechanical properties of PZT fibers. Experimental evidence is presented, which affirms the location of critical stress predicted in this model and explains the reported cracking in AFC in past research.

Keywords

piezoelectric fiber composite active fiber composite (AFC)macro fiber composite (MFC)interdigital electrode concept (IDE)state of stress material orientation state of polarization.

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References

ABAQUS Version 6.5, Theory Manual, Chapter 2.10.1, Piezoelectric Analysis, http://www.abaqus.com

ANSYS Release 9.0 Documentation, Chapter 6.4, Piezoelectric Analysis, http://www.ansys.com

Barrett, R. 1992. ``Actuation Strain Decoupling through Enhanced Directional Attachment in Plates and Aerodynamic Surfaces,'' In: Proceedings of the 1st European Conference on Smart Structures & Materials , Glasgow, May, pp. 383—386.

Beckert, W. and Kreher, W.S. 2003. ``Modelling Piezoelectric Modules with Interdigitated Electrode Structures,'' Computational Materials Science, 26:36—45.

Belloli, A. , Castelli, B. , Kornmann, X. , Huber, C. and Ermanni, P. 2004. ``Modeling and Characterization of Active Fiber Composites,' ' In: Proceedings of SPIE, Smart Structures and Materials: Smart Structures and Integrated Systems, Vol. 5390, pp. 78—88.

Bent, A. , Hagood, N.W. and Rodgers, J.P. 1995. ``Anisotropic Actuation with Piezoelectric Fiber Composites ,'' J. Intelligent Material Systems and Structures, 6(3):338—349.

Bent, A. 1997a. ``Active Fiber Composites for Structural Actuation,' ' PhD Dissertation, Department of Aeronautics and Astronautics, Massachusetts Institute of Technology.

Bent, A. and Hagood, N.W. 1997b. ``Piezoelectric Fiber Composites with Interdigitated Electrodes,'' J. Intelligent Material Systems and Structures , 8(11):903—919.

Bowen, C.R. , Bowles, A. , Drake, S. , Johnson, N. and Mahon, S. 1999. ``Fabrication and Finite Element Modelling of Interdigitated Electrodes,'' Ferroelectrics, 228:257—269.

10.

Brussard, J.M. 1963. ``Method of Longitudinally Pre-polarizing Bodies Consisting of at least One Layer of Piezoelectric Material,'' US Patent US3071841.

11.

Huber, C. , Spori, D. , Melnykowycz, M. and Barbezat, M. 2005. ``Active Fibre Composites: Optimization of the Manufacturing Process and their Poling Behavior,'' In: Proceedings of SPIE, Smart Structures and Materials: Active Materials: Behaviour and Mechanics , Vol. 5761, pp. 542—547.

12.

IRE Standards on Piezoelectric Crystals 1958 . ``Proceedings of the IRE,'' 46:764—778.

13.

Jones, R.M. 1975. ``Macromechanical Behavior of a Laminate,'' Mechanics of Composite Materials, International Student Edition, McGraw-Hill Kogakusha, Ltd, Tokyo, pp. 147—198.

14.

Lloyd, J.M. , Williams, R.B. , Inman, D.J. and Wilkie, W.K. 2004a. ``An Analytical Model of the Mechanical Properties of the Single Crystal Macro-Fiber Composite Actuator,'' In: Proceedings of SPIE, Smart Structures and Materials: Active Materials: Behavior and Mechanics , Vol. 5387, pp. 37—46.

15.

Lloyd, J.M. 2004b. ``Electrical Properties of Macro-Fiber Composite Actuators and Sensors,'' Master Thesis, Department of Mechanical Engineering, Virginia Polytechnic Institute and State University.

16.

Martinez, M. , Melnykowycz, M. , Artemev, A. and Nitzsche, F. 2005. ``Finite Element Analysis of Actuated Fiber Composites ,'' Presented at the CANSMART 2005 International Workshop Smart Materials and Structures, Oct. 13—14.

17.

Melnykowycz, M. , Kornmann, X. , Huber, C. , Barbezat, M. and Brunner, A.J. 2006. ``Performance of Integrated Active Fiber Composites in Fiber Reinforced Epoxy Laminates,'' Smart Materials and Structures , 15(1):204—212.

18.

Paradies, R. 2005. ``Numerical Investigation of Piezoelectric Actuators of the Type AFC/MFC,'' Proceedings NAFEMS Seminar, Numerical Simulation of Electromechanical Systems, Wiesbaden , Germany.

19.

Park, J.-S. and Kim, J.H. 2005. ``Analytical Development of Single Crystal Macro Fiber Composite Actuators for Active Twist Rotor Blades,'' Smart Materials and Structures, 14:745—753.

20.

Tan, P. and Tong, L. 2002. ``A One-dimensional Model for Non-linear Behavior of Piezoelectric Composite Materials,'' Composite Structures, 58(4):551—561.

21.

van Randeraat, J. and Setterington, R.E. 1958. Piezoelectric Ceramics, London Mullard, pp. 1—8.

22.

Wickramasinghe, V.K. and Hagood, N.W. 2004. ``Material Characterization of Active Fiber Composites for Integral Twist-actuated Rotor Blade Application,'' Smart Materials and Structures, 13(5):1155—1165.

23.

Wilkie, W.K. , Bryant, R.G. , High, J.W. , Fox, R.L. , Hellbaum, R.F. , Jalink, A. , Little, B.D. and Mirick, P.H. 2000. ``Low-Cost Piezocomposite Actuator for Structural Control Applications'' In: Proceedings of 7th SPIE International Symposium on Smart Structures and Materials, Newport Beach, CA, March 5—9.

24.

Williams, R.B. , Park, G. , Inman, D.J. and Wilkie, W.K. 2002. ``An Overview of Composite Actuators with Piezoceramic Fibers, In: Proceedings, IMAC-XX: Conference on Structural Dynamics, Westin Los Angeles Airport Hotel, Los Angeles, CA, February 4—7.

25.

Williams, R.B. , Inman, D.J. and Wilkie, W.K. 2003. ``Nonlinear Mechanical Behavior of Macro Fiber Composite Actuators,'' In: Proceedings of the 6th International Conference of Sandwich Structures, Ft. Lauderdale, Fl.

Numerical Stress Investigation for Piezoelectric Elements with a Circular Cross Section and Interdigitated Electrodes

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