Guide for Spectral-Based Fatigue Analysis For Vessels/Руководство по спектральному анализу усталости судов

Издание на английском языке
The book is devoted to assessing the fatigue strength of marine vessels, covering the criteria and methods used to classify specialized vessels. It considers three main methods of installing conductors for offshore oil and gas production, and also includes recommendations for conducting spectral fatigue analysis, which makes it possible to assess the durability of the structure in a marine environment. The author shares his experience and scientific achievements in the field of marine engineering, emphasizing the importance of a thorough assessment of critical structural sites to ensure the reliability and safety of ships. The book also calls for feedback and collaboration with professionals in the field to further improve analysis methods.

Contents
Section 1 Introduction,
1 Purpose and Applicability
3 Background (1 October 2017)
5 Areas for Fatigue Strength Evaluation
7 Methodology and Assumptions
Section 2 Spectral-based Fatigue Analysis Procedure Overview
1 General
1.1 Seakeeping Analysis (Section 3)
1.3 Structural Analysis (Section 4)
1.5 Spectral Analysis (Section 5)
1.7 Fatigue Strength Assessment (Section 6)
Figure 1 Schematic Spectral-based Fatigue Analysis Procedure
Section 3 Seakeeping Analysis
I Scope of Seakeeping Analysis
3 Vessel Loading Conditions
5 Hydrodynamic Models
7 Initial Balance Check
9 Seakeeping Analysis Methods
II Effects of Ship Motions and Wave Pressures
11.1 Inertial and Gravitational Loads due to Ship Motions
11.3 Real and Imaginary Parts
11.5 Pressure Mapping
11.7 Intermittent Wetting
Section 4 Structural Analysis
1 General (1 October 2017)
3 Internal Load
3.1 Liquid Tank Pressures
3.3 Bulk Cargo Pressure
3.5 Container Loads
3.7 Loads on Lightship Structure and Equipment
5 Load Cases and Model Equilibrium
5.1 Number of Load Cases
5.3 Equilibrium Check.
7 Structural Modeling and Analysis
7.1 3-D Global Analysis Modeling
7.3 Analyses of Local Structure
7.5 Hot Spot Stress Concentration
Figure 1 Ship Coordinate System
Figure 2 Liquid Pressure on a Completely Filled Tank
Figure 3 Liquid Pressure on a Partially Filled Tank
Figure 4 Depiction of Surface Normal Vector, П, Acceleration Vector, a, and a
Figure 5 Vertical and Transverse Container Load Components
Figure 6 Definition of Hot Spot Stress
Section 5 Spectral Analysis
1 General
3 Wave Spectra and Wave Scatter Diagram (1 October 2017)
5 Stress Range Distributions
Table 1 ABS Wave Scatter Diagram for Unrestricted Service Classification (Representing the North Atlantic)
Table 2 ABS Wave Scatter Diagram for World-Wide Trading Service Classification (1 October 2017)
Section 6 Fatigue Strength Assessment
1 General.
3 S-N Data for Steel
4 S-N Data for Aluminum
5 Fatigue Strength.
7 Combined Fatigue Life from Multiple Loading Conditions
9 Acceptance Criteria (1 October 2017)
Appendix 1 Basic Design S-N Curves
Table 1 parameters for Basic S-N Design Curves
Figure 1 S-N Curves
Appendix 2 Outline of a Closed Form Spectral-based Fatigue Analysis Procedure
1 General.
3 Key Steps in Closed Form Damage Calculation.
5 Closed Form Damage Expression
Figure 1 Spreading Angles Definition.