Abstract
For the light structures immersed in water, a full fluid-structure interaction (FSI) has to be considered when structural acoustics is analyzed. However, the computation costs for the FSI prediction and optimization is always huge. The Fast Multipole Boundary Element Method (FMBEM) is one of the most widely used methods to accelerate the computations. Meanwhile, sensitivity analysis for FSI problems is the most time-consuming part of gradient-based optimization strategies. In this research, a FMBEM-based sensitivity analysis is applied to a practical underwater model’s structural-acoustic optimization. Object function that represents the overall radiated sound power are investigated, where the damping material thickness in some specific areas were chosen as design parameters. An improvement of the object functions are found within a limited number of function evaluations. The FEM/FMBEM based sensitivity analysis is used to calculate the sensitivity of the object function to the design parameters. The method of moving asymptotes (MMA) is chosen as the optimization algorithm. The efficiency of this optimization strategy applied on FSI practical model is investigated in detail.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.