Title of Paper:
Vibration and noise analysis of multiphysical coupling systems
Journal:
Journal of Mechanical Science and Technology
Summary:
Vibration and noise analysis of complex mechanical systems is very difficult by traditional technologies. We present a novel technology to analyze the vibration and noise of complex structures. This technology can be divided into three stages step by step. First, it is necessary to process the load simplification, modal analysis, vibration and noise testing in the preparation stage. Then, in the vibration analysis stage, a virtual far-field excitation method is presented to obtain more accurate vibration response results in the near-field and far-field response points, of which the nonlinear behaviors need not be considered. And the solver error caused by the distance between the excitation point and response points could be reduced. Last, in the noise analysis stage, a modal partition method is put forward to solve the structure radiated noise according to the distributions of the low-level modal shapes, which is a rapid and efficient method to obtain a radiated noise distribution for the complex structures. On the whole, this technology has potential applications in vibro-acoustic problems solving for the complex systems in practical engineering.
Co-author:
Fuyin Ma, Jiu Hui Wu, and Weiwei Wu
Papers
