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GB/T 43945-2024: Cabin noise prediction for ships based on statistical energy analysis
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| GB/T 43945-2024 | English | 519 |
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Cabin noise prediction for ships based on statistical energy analysis
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GB/T 43945-2024
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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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