Electrical-mechanical coupling effects on the dynamic response of smart composite structures

Robert P. Thornburgh; Aditi Chattopadhyay

doi:10.1117/12.436553

16 August 2001 Electrical-mechanical coupling effects on the dynamic response of smart composite structures

Robert P. Thornburgh, Aditi Chattopadhyay

Proceedings Volume 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems; (2001) https://doi.org/10.1117/12.436553
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

A smart structural model is developed to analytically determine the response of arbitrary structures with piezoelectric materials and attached electrical circuitry. The equations of motion are formulated using the coupled piezoelectric formulations. However, rather than solving for strain and electric field, the proposed model solves for the strain and electric charge. The equations of motion are simplified for the case of a composite plate structure using a refined higher order laminate theory. Additional degrees of freedom are then added to describe any attached electrical circuitry. A method is also presented for system simplification using the structural mode shapes and natural frequencies. Results are verified using experimental data for passive electrical shunt damping. The developed model results in a general framework that can be useful in solving a wide variety of coupled piezoelectric-mechanical problems addressing issues such as passive electrical damping, self-sensing and electrical power consumption.

Citation Download Citation

Robert P. Thornburgh and Aditi Chattopadhyay "Electrical-mechanical coupling effects on the dynamic response of smart composite structures", Proc. SPIE 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems, (16 August 2001); https://doi.org/10.1117/12.436553

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