Abstract
Assessment of embedding ZnO nanorods in a composite beam on the nonlinear response of a beam–mass system is performed. Structural and mechanical characterization of two configured composite beam–mass systems with and without embedded nanorods is conducted. The nanorods were grown on the surface of the carbon fibers by chemical and hydrothermal techniques to form an interface boundary layer between the rods and the fiber/epoxy matrix. Parameters including stiffness, modulus of elasticity, natural frequency, damping coefficient and effective nonlinearities of the two composite beam–mass systems are identified. For the nonlinear parameter identification, the beams were excited parametrically. The results show that embedding ZnO increases the linear damping and modulus of elasticity. The effects of these variations and roles of other identified parameters that impact the parametric response are discussed.
Original language | English |
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Pages (from-to) | 1179-1189 |
Number of pages | 11 |
Journal | Nonlinear Dynamics |
Volume | 90 |
Issue number | 2 |
DOIs | |
State | Published - 1 Oct 2017 |
Keywords
- Bifurcation
- Composite beams
- Nonlinear response
- Nonlinear systems
- Parametric excitation
- ZnO nanorods