Ship structure vibration and noise forecasting system based on S-P-R

A technology of S-P-R and structural vibration, which is applied in vibration testing, machine/structural component testing, special data processing applications, etc., to achieve the effect of saving technical transformation costs, reducing technical risks, and reducing measurement costs

Inactive Publication Date: 2015-11-04
SHANGHAI GUANTU ELECTRICAL TECH CO LTD
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Problems solved by technology

[0026] Aiming at the defects existing in the prior art, the present invention provides a ship structural vibration and noise forecast system based on S-P-R, which overcomes the problem that corresponding remedial measures can be taken according to the measurement results of vibration a

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  • Ship structure vibration and noise forecasting system based on S-P-R
  • Ship structure vibration and noise forecasting system based on S-P-R
  • Ship structure vibration and noise forecasting system based on S-P-R

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Embodiment Construction

[0067] The present invention is described in detail below in conjunction with accompanying drawing:

[0068] The present invention provides a S-P-R based ship structure vibration and noise forecasting system. The basic idea is to measure the parameters of wind load and wave load on the ship, and at the same time detect the structural vibration of the ship and the vibration data of the excitation source. The excitation source mainly includes propeller, ship Main engine, auxiliary engine, cabin fan. Utilize the patent of the present invention and real ship test data to optimize ship structure vibration and noise forecast analysis. Extract the data of the most unfavorable part of the structural vibration according to the forecast results of the structural vibration and noise of the ship, improve the structural type, and realize the optimization of the vibration and noise reduction structure; at the same time, use the patent of the invention to analyze and reduce the vibration of ...

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Abstract

The invention provides a ship structure vibration and noise forecasting system based on S-P-R, comprising a database module, a modeling and calculating module, and a result processing module. The database module stores the vibration intensity data of various kinds of vibration sources in each cabin of a ship, and the noise intensity data of various kinds of noise sources; the modeling and calculating module comprises a ship modeling submodule, a key excitation source recognition submodule, a transmission path determination submodule, and a receiving station energy calculating module, and is used for defining transmission paths, calculating the transmission loss of the vibration/noise energy generated by each excitation source by the transmission to a receiving station along a transmission path, and then calculating the vibration/ noise total energy of the receiving station. The system of the invention combines an analysis method, a numerical method and an experimental method to analyze ship structure vibration source and transmission path characteristics, calculates cabin air noise levels according to the analysis procedure of an S-P-R method, and overcomes the problem that corresponding remedial measures can not be taken according to vibration and noise measurement results until a ship is completed.

Description

technical field [0001] The invention belongs to the technical field of ship design and construction, and in particular relates to an S-P-R-based ship structure vibration and noise forecasting system. Background technique [0002] Ship noise and vibration not only damage the health of the crew, hinder the normal work of the crew, but also easily cause fatigue and damage to the hull structure, so it is necessary to control ship noise and vibration. Especially as IMO and various classification societies have stricter restrictions on ship structural vibration and cabin noise, ship engineers and technicians have carried out a series of studies on ship structural vibration and structural sound transmission mechanisms, and put forward corresponding mitigation measures. Vibration and noise reduction measures, the research scope ranges from simple typical ship connection structure to the whole ship structure vibration, from a single plane wave to multiple non-plane waves coupled with...

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Application Information

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IPC IPC(8): G01M7/02G06F17/50
Inventor 张桂臣车驰东杨勇孙增华臧绪运
Owner SHANGHAI GUANTU ELECTRICAL TECH CO LTD
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