Accession Number : AD0744020

Title :   Transient Response of a Point-Excited Submerged Spherical Shell,

Corporate Author : POLYTECHNIC INST OF BROOKLYN N Y DEPT OF AEROSPACE ENGINEERING AND APPLIED MECHANICS

Personal Author(s) : Lou,Y. K. ; Klosner,J. M.

Report Date : MAY 1972

Pagination or Media Count : 33

Abstract : The transient responses of a submerged spherical shell to a concentrated impulse and Heaviside load are obtained by using the classical mode method and the Laplace transform. For long time solutions, only a relatively small number of modes are sufficient, while for the short time response, a large number of modes must be used in order to achieve acceptable accuracy. For the lower modes, the inversion integral involves only simple poles and can be evaluated by Cauchy's residue theorem. For the higher modes it is necessary to use asymptotic approximations and the inversion involves branch points and poles. (Author)

Descriptors :   (*SHELLS(STRUCTURAL FORMS), LOADS(FORCES)), (*UNDERWATER EQUIPMENT, SHELLS(STRUCTURAL FORMS)), FLUID MECHANICS, INTERACTIONS, RESPONSE, INTEGRAL TRANSFORMS, ASYMPTOTIC SERIES, APPROXIMATION(MATHEMATICS)

Subject Categories : Structural Engineering and Building Technology
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE