Nonlinear Frequency Analysis of Hair Cell Bundle Structure with Negative Stiffness Characteristic

초록

This study presents the mechanism of nonlinear stiffness and amplification of the sound signal associated with the hair bundle structure. The 3D structure-based bio-inspired hair cell bundle structure which has the nonlinear spring property of negative stiffness is used in this study. Then, the hair cell-based structure is used as nonlinear spring element of 1-DOF vibrating system. Harmonic balance method (HBM), a typical analytical tool used to estimate the nonlinear frequency response functions (FRFs), is applied to analyze the 1-DOF nonlinear mass-spring-damper system. The function of the nonlinearity of human’s hair cells is investigated from the HBM analysis results.