Abstract
In this paper, a parameter identification method merged with the precise integration method and the predictor–corrector strategy is proposed to identify the parameters of a nonsmooth aeroelastic system quickly and accurately. Considering the aeroelastic system subject to unsteady aerodynamic force, the parameters that need to be identified include the structural and nonsmooth parameters. The work of this paper mainly includes three parts. First, based on the precise integration method and combined with the predictor–corrector strategy, a new technology that can accurately locate the switching point is proposed to obtain the response of the aeroelastic system with high precision. Then, the problem for identification of parameters of the nonsmooth aeroelastic system is modeled as a nonlinear least-squares problem between the measured data and the calculated response. A new strategy that can obtain the nonsmooth parameters sensitivity matrix accurately is proposed, and then the parameters are identified through the enhanced response sensitivity approach. Finally, the nonsmooth aeroelastic system with freeplay and hysteresis nonlinearity are taken as the numerical examples to demonstrate the feasibility and robustness of the present method.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
