Accession Number:

ADA099118

Title:

Probabilistic Structural Analysis of Ship Hull Longitudinal Strength.

Descriptive Note:

Corporate Author:

ROSENBLATT (M) AND SON INC NEW YORK

Personal Author(s):

Report Date:

1980-12-01

Pagination or Media Count:

88.0

Abstract:

Existing probabilistic structural design methods are reviewed, their applicability to ship hull structural design considered and the most promising probabilistic analysis techniques are identified. The current state of knowledge concerning structural modes of failure and load distribution is considered with respect to its impact on probabilistic structural analyses. The emphasis is on longitudinal strength considerations. Factors influencing strength, in terms of uncertainties in ship strength distribution, are reviewed. Different methods are proposed to obtain coefficients of variation for various types of data on the uncertainties. Sample calculations are performed for a number of ships using an approximate probabilistic method and yielding safety margins for each. This method requires that only the coefficients of variation of the strength and load be known. A computer program is developed to perform this calculation for any ship subjected to any load or mode of failure. Author

Subject Categories:

  • Statistics and Probability
  • Marine Engineering
  • Structural Engineering and Building Technology
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE