Vibration transmissibility of submerged cylindrical double-shell based on reconstructing velocity field
JIN Guang-wen1, Zhang Lin-ke 2, MIAO Xu-hong 1, Jia Di1, Wang Xue-ren1
(1 Naval Vessel Institute, Naval Academy of Armament. Beijing 100161, China. 2 Research Inst. of Vibration & Noise, Navel Univ. of Engineering, Wuhan 430033, China）
Abstract：Abastract: Proceeding from timely reconstructing velocity field and evaluating noise for outer shell of submarine, vibration transmissibility between double shells of submerged cylindrical double-shell structure has studied by underwater vibration test. An finite element model of ribbed cylindrical double-shell was established in the paper. Analyzed the vibration response of shells, and founded the law of transmissibility for cylindrical double-shell in different forms, there are fluid-structure coupling, exciting-forces and connection dimension between double shells. The results of test and calculation provided some theoretical basis for velocity field reconstruct of outer shell and noise source identification of the submarine.
2011, Vol. 30 
