Dynamic peak amplitude analysis and bonding layer effects of piezoelectric bimorph cantilevers

• Published in: Smart materials and structures Vol. 13; no. 1; pp. 203 - 210
• Main Authors: Wu, Tao, Ro, Paul I
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.02.2004; Institute of Physics
• Subjects: Exact sciences and technology; Fundamental areas of phenomenology (including applications); General equipment and techniques; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Physics; Solid mechanics; Structural and continuum mechanics; Transducers; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Vibrations and mechanical waves; Finite element method; Bimorph transducer; Numerical method; Piezoelectric transducers; Piezoelectric actuators; Analytical method
• ISSN: 0964-1726; 1361-665X
• DOI: 10.1088/0964-1726/13/1/024

An analytical prediction of dynamic performance for piezoelectric bimorph structures was investigated. A damping ratio was assumed and employed to determine dynamic peak amplitudes at resonances by finding the frequency with 1/SR2 of the peak amplitude. Finite element simulations were used to validate the proposed improvement strategy. Results show that the peak amplitude determination method is good enough to predict the dynamic performance of piezoelectric bimorphs. The effects of bonding layers were also analysed by both static and dynamic methods. The bonding influence can be minimized by selecting appropriate bonding materials and dimensions of structures.