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Ship overall scheme mechanical noise assessment method

An overall scheme, mechanical noise technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as quantitative calculation or simulation evaluation methods that have not been established, to overcome uncertainty, and the method is reasonable and easy , Improve the effect of rationality and accuracy

Active Publication Date: 2019-07-30
HARBIN ENG UNIV
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Problems solved by technology

[0003] At present, the domestic and foreign methods for evaluating the mechanical noise of the ship's overall plan are mainly the "manual experience" analysis method, and no evaluation method based on quantitative calculation or simulation has been established.

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  • Ship overall scheme mechanical noise assessment method
  • Ship overall scheme mechanical noise assessment method
  • Ship overall scheme mechanical noise assessment method

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Embodiment Construction

[0052] The present invention is described in detail below in conjunction with accompanying drawing:

[0053] The invention belongs to the technical field of ship vibration and noise reduction demonstration and evaluation, and relates to a mechanical noise evaluation method applicable to the overall plan of a surface ship, in particular to a method for evaluating mechanical noise in the overall plan design stage, according to the overall design plan of the surface ship, based on the statistical energy method, Taking the characteristic data of the vibration excitation source of the equipment base as input to estimate the radiated noise of a single machine and assess the mechanical noise of the navigation condition, and compare it with the index requirements to realize the method of risk assessment of the mechanical noise index of the overall plan.

[0054] The present invention provides a mechanical noise assessment method for the general plan of the ship, which can estimate the ...

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Abstract

The invention discloses a ship overall scheme mechanical noise assessment method, and belongs to the technical field of ship vibration and noise reduction demonstration and assessment. The method comprises the steps of performing ship overall scheme design result analysis and structure modeling parameter sorting; establishing a ship geometric structure simulation model; establishing a ship statistical energy analysis model; evaluating the radiation noise of the ship single machine; and estimating ship navigation working condition mechanical noise. The method is reasonable and feasible, overcomes the uncertainty of a conclusion obtained by adopting a manual experience method in the mechanical noise assessment of the existing ship overall scheme, can realize quantitative simulation calculation of mechanical noise under the equipment single machine and navigation working conditions, and greatly improves the rationality and effectiveness of the mechanical noise assessment result of the ship overall scheme.

Description

technical field [0001] The invention belongs to the technical field of demonstration and evaluation of ship vibration and noise reduction, and in particular relates to a method for evaluating mechanical noise of a ship overall plan. Background technique [0002] Underwater radiated noise of ships is one of the important indicators to measure the comfort and acoustic performance of ships. With people's increasing attention to the marine ecological environment, the legislation on the control of underwater radiated noise of civil ships seems to be just around the corner. Therefore, accurate To predict underwater radiated noise, it is very important to design vibration and noise reduction schemes as soon as possible. Underwater radiated noise of ships includes three parts: mechanical noise, hydrodynamic noise and propeller noise, and the underwater radiated noise of ships is dominated by mechanical noise at medium and low speeds (generally not greater than 10 knots). At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20Y02T90/00
Inventor 庞福振李海超缪旭弘王雪仁高晟耀李玉慧霍瑞东彭德炜
Owner HARBIN ENG UNIV
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