Self-Actuating and Self-Diagnosing Plastically DeformingPiezo-Composite Flapping Wing MAV

摘要

In this work, we propose a constitutive model to describe the behavior of Piezoelectric Fiber Reinforced Com-posite (PFRC) material consisting of elasto-plastic matrix reinforced by strong elastic piezoelectric fibers. Com-putational efficiency is achieved using analytical solutions for elastic stifness matrix derived from Variational Asymptotic Methods (VAM). This is extended to provide Structural Health Monitoring (SHM) based on plas-ticity induced degradation of flapping frequency of PFRC. Overall this work provides an effective mathematical tool that can be used for structural self-health monitoring of plasticity induced flapping degradation of PFRC flapping wing MAVs. The developed tool can be re-calibrated to also provide SHM for other forms of failures like fatigue, matrix cracking etc.