A method for measuring the weight, center of gravity and moment of inertia of a ship model
A technology of moment of inertia and measurement method, which is applied in the fields of moment of inertia measurement, ship model weight and center of gravity, and can solve the problems that the measurement method cannot meet the requirements of ship model center of gravity and moment of inertia measurement.
Active Publication Date: 2021-09-14
CHINA SPECIAL TYPE FLIER RES INST
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Problems solved by technology
The inertia adjustment frame device and its measurement method cannot meet the requirements of the center of gravity and moment of inertia measurement of the ship model, mainly reflected in the following aspects: (1) This method can only measure the center of gravity and moment of inertia in one direction each time it is installed, such as pitching inertia Both the rolling inertia and the rolling inertia need to be measured, so the direction of the ship model needs to be turned 90 degrees for secondary installation and debugging
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[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0048] like figure 1 As shown, the measurement platform 1 is used to provide the motion of the ship model in pitch and roll directions; the described six-component force balance 2 is used to measure the real-time force and moment after the ship model moves; the ship model The model transition connector 3 is used to connect the six-component force balance 2 and the measured ship model 4. The ground of the ship model transition connector 3 is flat, and the upper connection surface is consistent with the corresponding position of the measured ship model 4, which is consistent with the measured ship mo...
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The invention belongs to the technical field of ship model pool testing, and discloses a device and method for measuring the weight, center of gravity and moment of inertia of a ship model. The device includes: a measuring platform (1), a six-component force balance (2), and a ship model transition connection part (3) and the ship model to be tested (4); the measurement platform (1) is used to provide the motion of the ship model in pitch and roll directions; the six-component force balance (2) is used to measure the real-time affected Force and moment; the ship model transition piece (3) is used to connect the six-component force balance (2) and the ship model under test (4), by giving the ship model under test a forced sinusoidal periodic reciprocating motion, the six-component force balance is tested vertically The center of gravity and the moment of inertia of the ship model can be obtained through conversion of the magnitude of the lateral force, pitching moment, and rolling moment, without the need for secondary installation and debugging.
Description
technical field [0001] The invention belongs to the technical field of ship model pool tests, in particular to a method for measuring the weight, center of gravity and moment of inertia of a ship model. Background technique [0002] In the pool test, the weight of the model, the center of gravity, and the measuring method of the moment of inertia basically adopt the form of a knife edge and an inertia adjustment frame, such as CN1401981A, CN1170131C, CN101852641A, and CN101852641B. Ma Yong introduced this method in detail in "Design of Ship Model Weight, Center of Gravity and Moment of Inertia Measurement System" published in "Journal of Harbin Engineering University" 2011 Issue 01. [0003] The method is to use the cantilever swing principle of the inertia adjustment frame to measure the rotation period and convert it to obtain the moment of inertia. The inertia adjusting frame device and its measurement method cannot meet the requirements of the center of gravity and mome...
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IPC IPC(8): G01M1/10G01M1/12G01G19/00
CPCG01G19/00G01M1/10G01M1/122
Inventor 史圣哲李徐刘晓峰焦俊魏飞李成华
Owner CHINA SPECIAL TYPE FLIER RES INST