Methodologies for performing modal analysis of a flexible structure vibrating in a fluid were developed and implemented by interfacing the SDRC I-DEAS software of the Faculty of Engineering and Applied Science and the HYDROPAN program at the Institute for Marine Dynamics. A case study involving a thin walled cylindrical shell partially submerged in water was used to demonstrate the various steps involving a "dry" mode analysis, inclusion of the added mass effect and the subsequent "wet" mode analysis. Natural frequencies were determined for the in vacuo and submerged cases.
National Research Council of Canada. Institute for Marine Dynamics
St. John's, Newfoundland
Contractor Report (National Research Council of Canada. Institute for Marine Dynamics), no. CR-1989-09.