Guidelines for Direct Load Analysis and Strength Assessment (Edition 3.1)/Руководство по прямому анализу нагрузки и оценке прочности (редакция 3.1)

Издание на английском языке
The book is devoted to the issues of ensuring the structural integrity of modern ships, focusing on the need to apply new methods of strength assessment, such as direct load analysis and the finite element method. With the increasing size and diversity of vessels, ClassNK is actively seeking new technical knowledge to update its rules and requirements. Methods are described that make it possible to accurately simulate the loads acting on a vessel and to carry out detailed assessments of its characteristics. The book also includes the latest advances in statistical forecasting of non-linear responses, which allows for improved strength assessment methods. The main goal is to develop safer and more rational requirements that ensure the structural integrity of ships even in the harshest conditions.

Contents
1 General
1.1 Application
1.2 General
1.3 Submission of Documents
2 Definitions
3.1 Definition of Terms
3.2 Other
3 Evaluation Procedures
4 Dominant Ship Motions and Load Parameters (DLP) for Structural Strength Assessments
5 Direct Load Analysis and RAO Calculations
5.1 General
5.2 Computer Program Verification.
5.3 Loading Condition Selection
5.4 RAO Calculations
6 Statistical Predictions of Ship Response in Irregular Waves (Short-Term and Long-Term)
6.1 Short-Term Predictions
6.2 Long-Term Predictions
7 Equivalent Design Waves and Associated Loads.
7.1 General
7.2 Determination of Wave Periods and Wave Directions
7.3 Determination of Wave Heights
7.4 Associated Loads
8 Finite Element Analysis
8.1 Verification of Calculation Method and Analysis Accuracy
8.2 FE Models
8.3 Load and Boundary Conditions
9 Structural Strength Assessments
Annex 1 Relevant Requirements of Part C of the Rules
Annex 2 Structural Strength Assessments Based Upon Full Spectrum Analysis
and Structural Strength Assessments Based Upon Worst Short-Term Sea States
Annex 3 Terms and Conditions for DLP and Direct Load Analysis
Annex 4 Loading Conditions for Direct Load Analysis and Finite Element Analysis
Annex 5 Short-Term and Long-Term Predictions
Annex 6 Structural Strength Assessments