Prediction of actuation displacement and the force of a pre-stressed piezoelectric unimorph (PUMPS) considering nonlinear piezoelectric coefficient and elastic modulus

In this paper, material nonlinear behaviors of the piezoceramic, PZT5A, under high electric field and various stress conditions were experimentally investigated and the actuation performance analysis of PUMPS (piezoelectric unimorph with mechanically pre-stressed substrate) considering the material nonlinearities of the embedded PZT5A was accomplished. Empirical functions, which represent stress effects on the performance of the PZT5A, were established by measuring the induced piezoelectric strain versus electric field curves of the PZT5A under various applied stresses and electric fields. In addition, variation of the elastic modulus of the PZT5A was evaluated based on the frequency response functions under various electric fields. The nonlinear characteristics of the PZT5A were implemented in the ABAQUS simulation model for the performance analysis of PUMPS. With the nonlinear material properties of the PZT5A, the actuation displacement and force of PUMPS were accurately predicted.

[1]  Jae-Hung Han,et al.  Development of a piezoelectric unimorph using a mechanically pre-stressed substrate , 2009 .

[2]  S. Poh,et al.  Performance of an active control system with piezoelectric actuators , 1988 .

[3]  H. Krueger,et al.  Stress Sensitivity of Piezoelectric Ceramics: Part 1. Sensitivity to Compressive Stress Parallel to the Polar Axis , 1967 .

[4]  Robert G. Bryant,et al.  Overview of NASA Langley's Piezoelectric Ceramic Packaging Technology and Applications , 2007 .

[5]  Van Phuoc Phan,et al.  Actuation displacement performance change of pre-stressed piezoelectric actuators attached to a flat surface , 2009 .

[6]  Kwang Joon Yoon,et al.  Dependency of electric field and mechanical stress on piezoelectric strain of PZT 3203HD , 2003, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[7]  Youngwoo Moon,et al.  Domain configuration and switching contributions to the enhanced performance of rainbow actuators , 2001, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[8]  John Ballato,et al.  Understanding mechanics and stress effects in RAINBOW and THUNDER stress-biased actuators , 2000, Smart Structures.

[9]  Jong-Won Lee,et al.  Prediction of Actuation Displacement and Force of a Pre-Stressed Piezoelectric Unimorph, Pumps Considering Internal Stress Effects , 2009 .

[10]  James S. Vartuli,et al.  Effect of a Transverse Tensile Stress on the Electric‐Field‐Induced Domain Reorientation in Soft PZT: In Situ XRD Study , 2004 .

[11]  L. E. Cross,et al.  Nonlinear piezoelectric behavior of ceramic bending mode actuators under strong electric fields , 1999 .

[12]  R. Bryant,et al.  Thin-layer composite unimorph ferroelectric driver and sensor properties , 1998 .

[13]  Gene H. Haertling,et al.  Stress‐Enhanced Displacements in PLZT Rainbow Actuators , 2005 .

[14]  Moon K. Kwak,et al.  Development of lightweight THUNDER with fiber composite layers , 2000, Smart Structures.

[15]  Marc Kamlah,et al.  Effects of uniaxial prestress on the ferroelectric hysteretic response of soft PZT , 2005 .