Accession Number : AD0637470

Title :   A MATHEMATICAL MODEL DEFINING THE ACOUSTIC RADIATION FIELD GENERATED BY SPACIALLY DISTRIBUTED FORCE INPUTS TO THE HULL OF A SHIP.

Descriptive Note : Research and development rept.

Corporate Author : NAVY MARINE ENGINEERING LAB ANNAPOLIS MD

Personal Author(s) : Bailey,R. P.

Report Date : AUG 1966

Pagination or Media Count : 139

Abstract : To find simplified expressions for the radiation patterns of complex submerged vibrating bodies, such as submarines, a methematical model was constituted. It defines the acoustic radiation field generated by the energy sources. An array of point sources on an infinitely long cylindrical baffle replaces the internal energy sources. Sufficiently simple approximate expressions for radiated energy are obtained so that theory and experiments can be compared numerically in a fairly uncomplicated fashion, since the required pattern computations are easily programmed. If these results are not satisfactory then the only other road open appears to be to treat the finite cylinder and eventually the elastic case. (Author)

Descriptors :   (*SHIP HULLS, ACOUSTIC PROPERTIES), (*ACOUSTIC PROPERTIES, FORCE(MECHANICS)), MATHEMATICAL MODELS, VIBRATION, SUBMARINES

Subject Categories : Marine Engineering
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE