Nonlinear Behavior Analysis of a Flapping-Wing Mechanism with Clearance Joint

Abstract:

The nonlinear behavior of a flapping-wing mechanism affected by revolute joint clearance is studied in this work. Considering the axial dimension of bearing, energy dissipation and the nonlinear power exponent from material, the nonlinear stiffness coefficient and an improved contact dynamic model in the joint clearance is established. A flapping-wing mechanism dynamic model with joint clearance is also established. Then embed the contact dynamic model and system dynamic model into the mechanical system simulation software package. From large numbers simulations performed, and the analysis of journal trajectories and Poincare maps under the different clearance sizes, it can be concluded that flapping-wing mechanism with joint clearance exhibit a chaotic response, and the more clearance size, the more obvious chaotic behavior.

• Periodical: Applied Mechanics and Materials (Volume 743)
• Pages: 107-114
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.743.107
• Online since: March 2015
• Authors: X.P. Wang*, G. Liu
• Keywords: Clearance Joint, Contact Force, Flapping-Wing Mechanism, Nonlinear Behavior

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