Stochastic Characteristic of Long Term Distribution of Wave-Induced Loading and Simulation Method for Fatigue Strength Analysis of Ship Structural Member

Tomita, Yoshihiro; Hashimoto, Kiyoshi; Nagamoto, Ryuichi; Kitamura, Hiroshi; Fukuoka, Tetsuji

doi:10.2534/jjasnaoe1968.1995.381

Cited by 3 publications

(2 citation statements)

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“…A random sequence of wave load is simulated by the so-called storm model [12,13]. We generated six clustered Fig.…”

Section: Simulation Under Wave-induced Loadingmentioning

confidence: 99%

“…Furthermore, the adequacy of the proposed crack growth model is examined by comparison with fatigue tests under nonconstant loading. The proposed simulation method is applied to the fatigue crack propagation in a ship structure subjected to water pressure, where the time history of the water pressure during ship sailing is simulated by the so-called storm model [12,13], which is composed of a random sequence of clustered loadings. The results obtained by the proposed method are compared with those obtained by using the conventional crack growth equation.…”

Section: Introductionmentioning

confidence: 99%

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A computational approach for fatigue crack propagation in ship structures under random sequence of clustered loading

Okawa

Sumi

2008

J Mar Sci Technol

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The authors have developed a simulation program, CP-System, for multiple cracks propagating in a three-dimensional stiffened panel structure, where throughthe-thickness crack propagation is formulated as a twodimensional in-plane problem, and the crack propagation behavior is simulated by step-by-step finite element analyses. In order to evaluate the fatigue lives of marine structures accurately, it is necessary to take into account the load histories induced by sea waves, which may be composed of a random sequence of certain clustered loads with variable stress range. In the proposed crack growth model, the crack opening and closure behavior is simulated by using the modified strip yielding model, and the effective tensile plastic stress intensity range, DK RP , is calculated by considering the contact of plastic wake along the crack surfaces. The adequacy of the proposed crack growth model is examined by comparison with fatigue tests under non-constant-amplitude loading. The usefulness of the developed method is demonstrated for a ship structural detail under certain simulated load sequences. It is shown that the fatigue crack growth of a ship structure is significantly retarded due to the load interaction effects, so that the conventional method for fatigue life assessment may predict a relatively conservative fatigue life of a structure.

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“…A random sequence of wave load is simulated by the so-called storm model [12,13]. We generated six clustered Fig.…”

Section: Simulation Under Wave-induced Loadingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A computational approach for fatigue crack propagation in ship structures under random sequence of clustered loading

Okawa

Sumi

2008

J Mar Sci Technol

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A new fatigue crack growth model considering underloads and overloads history together with stress ratio

Lee

Kim

2022

International Journal of Naval Architecture and Ocean Engineeri

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Multi-scale modeling of fatigue crack propagation applied to random sequence of clustered loading

Sumi

Inoue

2011

Marine Structures

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Stochastic Characteristic of Long Term Distribution of Wave-Induced Loading and Simulation Method for Fatigue Strength Analysis of Ship Structural Member

Cited by 3 publications

References 0 publications

A computational approach for fatigue crack propagation in ship structures under random sequence of clustered loading

A computational approach for fatigue crack propagation in ship structures under random sequence of clustered loading

A new fatigue crack growth model considering underloads and overloads history together with stress ratio

Multi-scale modeling of fatigue crack propagation applied to random sequence of clustered loading

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