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With considering the misalignment exciting force of the gear coupling and nonlinear short bearing forces models, the dynamic model of rotor-bearing system under unbalance was set up. The vibration equations of the system were obtained. By the numerical value integral method, the system's nonlinear dynamic characters were investigated under misalignment exciting force of the gear coupling. From the...
In this paper, the dynamic behaviors of a shape memory alloy beam subjected to an axial dynamic load is studied. Based on the constitutive description of the thermo-mechanical and pseudo-elastic behaviors of the shape memory alloy material and the dynamic equilibrium equation of beam, the nonlinear dynamic model which dominates the transverse vibration of the beam is established first. And then the...
This article is concerned with the bifurcation and chaotic behaviors of a space three-bar supporter of shape memory alloys. Based on a fifth order polynomial constitutive description of thermo-mechanical and pseudo-elastic behaviors of shape memory alloys, the nonlinear dynamic model which dominates the vertical vibration of the space three-bar supporter of shape memory alloys is established. The...
As an experimental tool for analyzing movement of chaos, we intend to introduce the correlation dimension for analyzing vibration signals of rotor system in this paper. For noise corruption existing in field-measured vibration signal, morphological filter is also introduced for de-noising the vibration signal. The analysis and comparison between the correlation dimensions of the noised and de-noised...
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