Nonlinear dynamic characteristics of FGCNTs reinforced microbeam with piezoelectric layer based on unifying stress-strain gradient framework

A size-dependent model of functionally graded carbon nanotubes (FGCNTs) reinforced microbeam with piezoelectric layer is presented based on unifying nonlocal stress and strain gradient framework. Nonlinear dynamic characteristics of the microbeam arise from electrostatic, piezoelectric actuation and thermal loading, with consideration of quantum and thermal fluctuations induced Casimir force. The nonlinearly dynamic frequency and pull-in...