Uncertainties in loads for ships structures

Author

Atua, Khaled I. ; Ayyub, Bilal M.

Author_Institution

Dept. of Civil Eng., Maryland Univ., College Park, MD, USA

fYear

1995

Firstpage

460

Lastpage

465

Abstract

Structural reliability analysis requires characterizing uncertainties in strength and loads for selected failure modes. The objective of this paper is to study the uncertainties associated with the vertical wave-induced bending moment on ship hull girders. Also, uncertainties in whipping effects are investigated. Spectral analysis was used to calculate the maximum life-time wave loads on a ship with and without whipping. This type of analysis requires knowing a set of basic random variables. The uncertainties in wave-induced and whipping bending moments were investigated using Monte Carlo simulation by randomly generating these basic random variables and calculating wave and whipping loads on a ship. A parameteric study was performed to investigate the effect of variability in these basic random variables on the uncertainties of wave loads

Keywords

Monte Carlo methods; bending; failure (mechanical); ocean waves; reliability; ships; simulation; spectral analysis; structural engineering; uncertain systems; Monte Carlo simulation; failure modes; load uncertainties; maximum lifetime wave loads; parameteric study; random variables; ship hull girders; ship structures; spectral analysis; strength uncertainties; structural reliability analysis; variability; vertical wave-induced bending moment; whipping effects; Civil engineering; Density functional theory; Educational institutions; Frequency; Marine vehicles; Probability distribution; Random processes; Random variables; Spectral analysis; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Uncertainty Modeling and Analysis, 1995, and Annual Conference of the North American Fuzzy Information Processing Society. Proceedings of ISUMA - NAFIPS '95., Third International Symposium on

Conference_Location

College Park, MD

Print_ISBN

0-8186-7126-2

Type

conf

DOI

10.1109/ISUMA.1995.527739

Filename

527739