GB/T 43945-2024 English PDF

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GB/T 43945-2024: Cabin noise prediction for ships based on statistical energy analysis
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Similar standards

GB/T 7094   CB 1146.8   CB 1146.9   GB/T 43943   GB/T 43942   

Basic data

Standard ID: GB/T 43945-2024 (GB/T43945-2024)
Description (Translated English): Cabin noise prediction for ships based on statistical energy analysis
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: U04
Classification of International Standard: 17.140.30
Word Count Estimation: 26,267
Date of Issue: 2024-04-25
Date of Implementation: 2024-08-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 43945-2024: Cabin noise prediction for ships based on statistical energy analysis

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 17:140:30 CCSU04 National Standards of People's Republic of China Ship cabin noise prediction based on statistical energy analysis Released on 2024-04-25 2024-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols 2 5 General requirements 5 5:1 General Principles 5 5:2 Drawing requirements 5 5:3 Modeling requirements 6 6 Cabin noise calculation process 6 7 Cabin noise calculation method 7 7:1 Statistical Energy Analysis 7 7:2 Sound Pressure Calculation 11 7:3 Sound Pressure Level Calculation 11 7:4 Calculation of cabin noise level 11 8 Cabin noise calculation input parameters 11 8:1 Source parameters of noise equipment 11 8:2 Ship structure and cabin attribute parameters 12 Appendix A (Informative) Example of cabin noise calculation report 14 Appendix B (Informative) Estimation of vibration and noise source parameters of equipment 16 References 20

Foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting: Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents: This document was proposed and coordinated by the National Technical Committee for Standardization of Marine Vessels (SAC/TC12): This document was drafted by: China Ship Science Research Center: The main drafters of this document are: Li Zecheng, Wu Wenwei, Yan Bin, Zhang Wen, He Tao, Duan Yong, Li Guang, Jiang Chenban, Sun Yudong, Yin Xuewen, Wu Jian, Qi Jiangtao: Ship cabin noise prediction based on statistical energy analysis

1 Scope

This document specifies the general requirements for ship cabin noise prediction based on statistical energy analysis, cabin noise calculation process, cabin noise calculation Methods, cabin noise input parameters: This document is applicable to the air noise of living cabins, offices, wheelhouses, restaurants, kitchens, control rooms, etc: during the detailed design stage of ships: calculate:

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document: For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document: GB/T 3767 Acoustics - Determination of sound power level and sound energy level of noise source by sound pressure method - Engineering method for approximate free field above reflecting surface GB/T 3768 Acoustics Sound Pressure Method for Determination of Sound Power Level and Sound Energy Level of Noise Source Using a Simple Measurement of the Envelope Measurement Surface Above the Reflecting Surface Easy Method GB/T 3947 Acoustic Terminology GB/T 6882 Acoustics Sound pressure method for determining the sound power level and sound energy level of noise sources - Anechoic chamber and semi-anechoic chamber precision method GB/T 9911 Method for measuring airborne noise radiated by marine diesel engines GB/T 11349:2 Vibration and shock test determination of mechanical admittance Part 2: Measurement using a shaker for single-point translational excitation GB/T 11349:3 Vibration and shock test determination of mechanical admittance Part 3: Shock excitation method GB/T 16406 Acoustics - Test method for the bending resonance of acoustic materials for damping properties GB/T 18258 Test method for damping performance of damping materials GB/T 19889:3 Acoustics - Measurement of sound insulation of buildings and building elements - Part 3: Laboratory measurement of airborne sound insulation of building elements GB/T 19889:4 Acoustics - Measurement of sound insulation of buildings and building elements - Part 4: Field measurement of airborne sound insulation between rooms GB/T 20247 Acoustic reverberation room sound absorption measurement JT/T 781 Design code for ship noise control

3 Terms and definitions

The terms and definitions defined in GB/T 3947 and the following apply to this document: 3:1 The statistical average method of time and space is used to solve the solid structure vibration and fluid acoustic of complex systems using energy as an independent variable: The medium and high frequency coupling problems between fields are solved, and the energy transfer and balance between the various parts of the system are analyzed: 3:2 Subsystem Groups of modes with similar resonant forms: ......

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