Section 1 General
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules for the Classification of Trimarans, July 2022 - Volume 4 Direct Calculation Procedure - Part 1 Direct Calculation Procedure - Chapter 1 Introduction - Section 1 General

Section 1 General

Parent topic: Chapter 1 Introduction

1.1 Contents

1.1.1 This part of the Rules contains the following:

1.1.2  Vol 4, Pt 1, Ch 2 Structural Strength Analysis and Verification provides techniques for applying the global loads which are specified in previous Parts of the Rules. Vol 4, Pt 1, Ch 2 Structural Strength Analysis and Verification also describes appropriate boundary conditions and specifies acceptance criteria by which the analysis is to be assessed.

1.1.3 After identifying high stress local areas in the global analysis, Vol 4, Pt 1, Ch 2 Structural Strength Analysis and Verification then provides information on modelling, loading and analysis of local details.

1.1.4  Vol 4, Pt 1, Ch 3 Load Development provides an alternative procedure for developing loads to that of the Rule loads. The load development procedure can be based on either theoretical analysis or experimental techniques using model experiments.

  1. Theoretical analysis involves derivation of response to regular waves using a hydrodynamic program, short-term response to irregular waves using the sea spectrum concept, and long-term response predictions using statistical distributions of sea states.

  2. Experimental techniques involve conduct of model experiments in a hydrodynamic test facility to arrive at long-term response predictions using statistical distributions of seastates.

1.1.5 Analysis according to the procedure outlined in Vol 4, Pt 1, Ch 3 Load Development will result in a pressure distribution and inertial loads being calculated for each global load case.

1.1.6 The flow diagram depicted in Figure 1.1.1 Direct Calculation Procedure flow diagram gives an overview of the Direct Calculation Procedure.

Figure 1.1.1 Direct Calculation Procedure flow diagram
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