Method and equipment for determining vibration field of water surface hull planking based on simulation and test

Abstract

The invention discloses a method and equipment for determining a vibration field of a water surface hull plate based on simulation and test, and relates to the technical field of ships, the method comprises the following steps: dividing the water surface hull plate into n plate grids representing the distribution of the vibration field based on the distribution of rib positions and decks of a water surface ship; obtaining the number m of the started mechanical equipment under the current working condition and the mounting position corresponding to each piece of mechanical equipment; simulating and calculating a vibration transfer matrix from each mounting position to each grid under the action of the unit exciting force; performing a vibration test on the test object to obtain a vibration acceleration matrix corresponding to the test object; and based on the vibration transfer matrix and the vibration acceleration matrix, calculating to obtain a vibration field of the water surface hull planking. The method is used for solving the problems of low efficiency, long consumed time and poor precision when the vibration field of the water surface hull plate is calculated in the prior art, and the vibration field of the water surface hull plate is rapidly and accurately obtained.

Description

Technical Field

[0001] The present application relates to the technical field of ships, and in particular to a method and device for determining the vibration field of the outer hull of a surface ship based on simulation and tests. Background Art

[0002] The underwater radiated noise of a surface ship directly affects the acoustic stealth performance of the equipment and is related to its survivability. In addition, it will also have an impact on aquatic organisms and is related to environmental ecological problems. The sources of the underwater radiated noise of a surface ship mainly include two types: one is the propulsion system noise, and the other is the structural noise caused by the vibration of mechanical equipment transmitted to the outer hull of the ship. Among them, the vibration field of the outer hull of a surface ship is the direct factor for the generation of structural noise, and its calculation and evaluation are important links in the vibration and noise design of a surface ship.

[0003] The vibration field of the outer hull of a surface ship is usually obtained through the following two methods. One is obtained through numerical full simulation calculation, and this method requires obtaining accurate vibration data at the installation positions under the actual state of the mechanical equipment turned on under the operating conditions. However, after the mechanical equipment on the surface ship is installed, due to the limitations of control layout factors, it is difficult to obtain the vibration data at the installation positions of the mechanical equipment, resulting in an increase in the calculation of the vibration field. The other is obtained by testing the vibration data of all the outer hulls of the ship through vibration tests. This method is limited by the limit of the number of test points and cannot fully cover all areas of the outer hull of the ship wirelessly, resulting in a low accuracy of the vibration field. Summary of the Invention

[0004] In view of the above problems and technical requirements, the applicant of the present application proposes a method and device for determining the vibration field of the outer hull of a surface ship based on simulation and tests, so as to solve the problems of low efficiency, long time consumption, and poor accuracy that occur in the prior art when calculating the vibration field of the outer hull of a surface ship, and to quickly and accurately obtain the vibration field of the outer hull of a surface ship.

[0005] An embodiment of the present application provides a method for determining the vibration field of the outer hull of a surface ship based on simulation and tests, and the method includes:

[0006] Based on the distribution of the rib positions and decks of the surface ship, the outer hull of the surface ship is divided into n panel grids representing the vibration field distribution, where n is an integer greater than or equal to 2;

[0007] Obtain the number m of mechanical equipment turned on under the current operating conditions and the installation position corresponding to each mechanical equipment;

[0008] For each installation position, simulate and calculate the vibration transfer matrix from the installation position to each panel grid under the action of a unit excitation force;

[0009] A vibration test is performed on a test object to obtain a vibration acceleration matrix corresponding to the test object. Among them, the test object is obtained by extracting a target number s of the panels from w of the panels, where s is obtained based on m, and w is obtained based on n;

[0010] Based on the vibration transfer matrix and the vibration acceleration matrix, the vibration field of the outer plate of the surface ship is calculated.

[0011] According to a method for determining the vibration field of the outer plate of a surface ship based on simulation and test according to an embodiment of the present application, based on the vibration transfer matrix and the vibration acceleration matrix, calculating the vibration field of the outer plate of the surface ship includes:

[0012] Input the vibration transfer matrix and the vibration acceleration matrix into a preset vibration field calculation formula to obtain the vibration field of the outer plate of the surface ship output by the vibration field calculation formula;

[0013] Among them, the vibration field calculation formula includes:

[0014]

[0015] Among them, A n represents the vibration field of the outer plate of the surface ship, T cal represents the vibration transfer matrix, represents the inverse matrix of the target vibration transfer matrix T with the dimension of s*m of the panels of the test object test A test represents the vibration acceleration matrix;

[0016] Among them,

[0017] Among them, t cal_[e+(h-1)*L]j represents the vibration transfer value from the installation position where the jth (j≤m) mechanical equipment is located to the hth (2≤h≤s) panel of the test object under the action of a unit excitation, e represents a preset constant, and L represents a preset panel interval.

[0018] According to a method for determining the vibration field of the outer plate of a surface ship based on simulation and test according to an embodiment of the present application, the vibration transfer matrix includes:

[0019]

[0020] Among them, T cal represents the vibration transfer matrix, t cal_ij represents the vibration transfer value from the jth installation position to the ith panel under the action of a unit excitation force, i <= n, j <= m.

[0021] A method for determining the vibration field of the outer plate of a surface ship based on simulation and test according to an embodiment of the present application, the vibration acceleration matrix includes:

[0022]

[0023] wherein, A test represents the vibration acceleration matrix, and a test_j represents the vibration acceleration value of the j-th panel of the test object.

[0024] A method for determining the vibration field of the outer plate of a surface ship based on simulation and test according to an embodiment of the present application, after obtaining the number of equipment of the mechanical equipment turned on under the current working condition, further includes:

[0025] Obtaining the number of equipment to be deleted corresponding to the mechanical equipment installed on the outer plate of the surface ship;

[0026] Calculating the difference between the number of panels and the number of equipment to be deleted to obtain the w.

[0027] A method for determining the vibration field of the outer plate of a surface ship based on simulation and test according to an embodiment of the present application, the panel size of the panel is obtained by taking the smaller value of the rib spacing value and the deck height value;

[0028] Dividing the outer plate of the surface ship into n panels representing the vibration field distribution, including:

[0029] Based on the panel size, dividing the outer plate of the surface ship into n panels representing the vibration field distribution.

[0030] According to an embodiment of the present application, a method for determining the vibration field of the outer plate of a surface ship based on simulation and test, s = m + 1.

[0031] An embodiment of the present application also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the steps of the method for determining the vibration field of the outer plate of a surface ship based on simulation and test as described in any one of the above.

[0032] The method and device for determining the vibration field of the outer plate of a surface ship provided by the embodiments of the present application calculate the vibration field of the outer plate of the surface ship by combining simulation and test. Specifically, the outer plate of the surface ship is divided into n plate grids representing the vibration field distribution; and the number m of mechanical devices turned on under the current operating conditions and the installation position corresponding to each mechanical device are obtained; simulation calculations are performed on each installation position, specifically, the vibration transfer matrix from the installation position to each plate grid under the action of a unit excitation force is calculated; and test processing is performed on the test object, specifically, a vibration test is performed on the test object to obtain the vibration acceleration matrix corresponding to the test object; finally, based on the vibration transfer matrix and the vibration acceleration matrix, the vibration field of the outer plate of the surface ship is calculated. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 is a schematic flow chart of the method for determining the vibration field of the outer plate of a surface ship based on simulation and test provided by the embodiments of the present application;

[0035] Figure 2 is one of the schematic diagrams of the division results of the outer plate of the surface ship provided by the embodiments of the present application;

[0036] Figure 3 is the second of the schematic diagrams of the division results of the outer plate of the surface ship provided by the embodiments of the present application;

[0037] Figure 4 is a schematic structural diagram of the device for determining the vibration field of the outer plate of a surface ship based on simulation and test provided by the embodiments of the present application;

[0038] Figure 5 is a schematic structural diagram of the electronic device provided by the embodiments of the present application. Detailed Embodiments

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present application belong to the scope of protection of the present invention.

[0040] An embodiment of the present application provides a method for determining the vibration field of the outer plate of a surface ship based on simulation and test. This method can be applied to intelligent terminals, servers, or the controller of a ship. In this application, taking the application of this method in the controller of a ship as an example, and some other descriptions in the embodiments are for illustrative purposes only and are not used to limit the protection scope of the present application. After that, they will not be described one by one. The specific implementation of this method is as follows Figure 1 as shown:

[0041] Step 101: Divide the outer plate of the surface ship into n panel grids representing the vibration field distribution based on the distribution of the rib positions and decks of the surface ship.

[0042] Where n is an integer greater than or equal to 2.

[0043] Step 102: Obtain the number of devices m of the mechanical devices turned on under the current operating condition and the installation position corresponding to each mechanical device.

[0044] Step 103: For each installation position, simulate and calculate the vibration transfer matrix from the installation position to each panel grid under the action of a unit excitation force.

[0045] Step 104: Conduct a vibration test on the test object to obtain the vibration acceleration matrix corresponding to the test object.

[0046] Where the test object is obtained by extracting s panel grids with a target number from w panel grids. s is obtained based on m, and w is obtained based on n.

[0047] Step 105: Calculate the vibration field of the outer plate of the surface ship based on the vibration transfer matrix and the vibration acceleration matrix.

[0048] The method for determining the vibration field of the outer plate of a surface ship based on simulation and test provided by the embodiment of the present application calculates the vibration field of the outer plate of the surface ship through a combination of simulation and test. Specifically, it divides the outer plate of the surface ship into n panel grids representing the vibration field distribution; obtains the number of devices m of the mechanical devices turned on under the current operating condition and the installation position corresponding to each mechanical device; conducts simulation calculations for each installation position, specifically simulating and calculating the vibration transfer matrix from the installation position to each panel grid under the action of a unit excitation force; and conducts experimental processing on the test object, specifically conducting a vibration test on the test object to obtain the vibration acceleration matrix corresponding to the test object; finally, calculates the vibration field of the outer plate of the surface ship based on the vibration transfer matrix and the vibration acceleration matrix.

[0049] In a specific embodiment, a hull model is created, and the outer plate of the surface ship based on the hull model is divided into n panel grids representing the vibration field distribution according to the rib positions and decks.

[0050] Specifically, the panel size of the panel is obtained by taking the smaller value of the rib spacing value and the deck height value. Using the obtained panel size, n panels representing the vibration field distribution are divided according to the ribs and decks of the hull model's waterplane hull plating. In addition, each panel is numbered according to the numbering principle from top to bottom and from left to right. For example, P cal_1 , P cal_2 , P cal_3 ……P cal_n For specific reference, see Figure 2 .

[0051] In a specific embodiment, the vibration transfer matrix is shown in formula (1):

[0052]

[0053] Among them, T cal represents the vibration transfer matrix, and t cal_ij represents the vibration transfer value from the j-th installation position to the i-th panel under the action of a unit excitation force, where i <= n and j <= m.

[0054] In a specific embodiment, s = m + 1.

[0055] In a specific embodiment, after obtaining the number of mechanical devices turned on under the current operating condition, the number q of mechanical devices corresponding to the installation positions on the waterplane hull plating is obtained; the difference between the number of panels and the number of mechanical devices to be deleted is calculated to obtain w.

[0056] Specifically, w is obtained by calculating the difference between n and q, that is, w = n - q.

[0057] In a specific embodiment, the selection rule for the s panels of the test object includes: numbering each of the w panels according to the numbering principle from top to bottom and from left to right. For example, the new numbers are P new_1 , P new_2 , P new_3 ……P new_(n-q) . Calculate the integer part of the quotient of w divided by s, that is, calculate the integer part of the quotient of n - q divided by m + 1.

[0058] Specifically, the first panel of the test object is randomly selected from the numbers P new_1 ~P new_L to be a panel numbered P new_e (e <= L). By analogy, the h-th panel of the test object is the panel numbered P new_[e+(h-1)*L] . Among them, h (2 <= h <= m + 1).

[0059] In a specific embodiment, the vibration acceleration matrix is shown in formula (2):

[0060]

[0061] Among them, A test represents the vibration acceleration matrix, and a test_j represents the vibration acceleration value of the j-th panel of the test object.

[0062] Specifically, multiple selections of the test object can also be made to obtain multiple vibration acceleration matrices. By calculating the average value of the multiple vibration accelerations, this average value is used as the final vibration acceleration matrix.

[0063] In a specific embodiment, the target vibration transfer matrix T cal with the panel dimension of (m + 1) × m of the corresponding test object is extracted from the vibration transfer matrix T obtained from the simulation calculation. test . The specific extraction method includes: separating the vibration transfer value t cal_[e+(h-1)*L]j from the installation position of the j-th mechanical equipment under the action of a unit excitation force to the h-th panel of the test object, and obtaining T test . Specifically, refer to formula (3):

[0064]

[0065] Among them, t cal_[e+(h-1)*L]j represents the vibration transfer value from the installation position of the j-th (j ≤ m) mechanical equipment under the action of a unit excitation to the h-th (1 ≤ h ≤ s) panel of the test object, e represents a preset constant, and L represents a preset panel interval.

[0066] In a specific embodiment, based on the vibration transfer matrix and the vibration acceleration matrix, the specific implementation of calculating the vibration field of the outer plate of the surface ship includes:

[0067] Inputting the vibration transfer matrix and the vibration acceleration matrix into a preset vibration field calculation formula to obtain the vibration field of the outer plate of the surface ship output by the vibration field calculation formula.

[0068] Among them, the vibration field calculation formula is shown in formula (4):

[0069]

[0070] Among them, A n represents the vibration field of the outer plate of the surface ship, T cal represents the vibration transfer matrix, represents the inverse matrix of the target vibration transfer matrix T test with the panel dimension of s * m of the test object, and A test represents the vibration acceleration matrix.

[0071] Specifically, calculate the inverse matrix of T test to obtain

[0072] Specifically, to illustrate the present application more clearly, taking a certain ship example as the object, the data at a frequency of 100 Hz is used for illustration. Of course, this embodiment is only for illustration and is not used to limit the protection scope of the present application.

[0073] The object of this example is a certain small ship. The minimum value of the rib spacing and deck height of the ship is 1 meter, that is, the grid size of the panel representing the vibration field distribution is 1 m. The side shell plate (outer shell plate of the ship on the water surface) of the ship on the water surface is divided into 16 panels, as Figure 3 shown, numbered as P cal_1 、P cal_2 、P cal_3 ……P cal_16 .

[0074] It is analyzed that the number of mechanical equipment m = 2 is obtained under the assessment working condition, which are the motor equipment installed on the inner deck of the ship and the water pump equipment installed on the outer shell plate of the ship. The number of equipment q = 1 installed on the outer shell plate of the ship.

[0075] The vibration transfer matrix T from the installation positions of the motor (j = 1) and the water pump (j = 2) to each panel of the side shell plate of the hull under the action of a unit excitation force is calculated by using numerical technology simulation, cal that is, the vibration transfer value t from the installation position of the j-th (j ≤ 2) mechanical equipment under the action of a unit excitation to the i-th (i ≤ 16) panel, cal_ij The matrix is characterized as follows:

[0076]

[0077] In the vibration test, (m + 1) = 3 panels are regularly selected on the side shell plate of the hull as the test objects, and the vibration acceleration matrix A of the corresponding panels is obtained by testing. test .

[0078] The selection of the (m + 1) panels of the test objects in the vibration test is as follows: In this embodiment, q = 1, excluding the panel (numbered P cal_9 ) where the water pump mechanical equipment is installed, and the side shell plate of the hull is re-numbered as P new_1 、P new_2 、P new_3 ……P new_15 ; Taking the integer of n - q / m + 1 is L = 5; The first panel of the test object is randomly selected from the panels numbered P new_1 ~P new_5 to select a panel P new_e (e ≤ L). In this embodiment, e = 3 is selected, that is, the number is P new_3of the panel grid; the h-th (2 ≤ h ≤ m + 1) panel grid of the test object is numbered P new_[e+(h-1)*L] panel grids, which are P new_8 and P new_13 in this embodiment.

[0079] The vibration acceleration values a new_3 of the 1st panel grid P new_8 of the test object, the 2nd panel grid P test_1 of the test object, and the 3rd panel grid (m + 1 = 3) of the test object are obtained through testing; and a vibration acceleration matrix A test_2 and a test_3 are formed; and a vibration acceleration matrix A test characterization formula:

[0080]

[0081] According to the vibration transfer matrix T cal calculated by simulation and the vibration acceleration matrix A test tested through experiments, calculate the vibration field A n of the panel grids divided on the outer plate of the surface ship;

[0082] Extract from the matrix T cal obtained by simulation calculation the vibration transfer matrix T test with a dimension of (m + 1) × m corresponding to the panel grids of the test object. In this embodiment, T test is a matrix with a dimension of 3 × 2, and separate the vibration transfer values t cal_[e+(h-1)*L]j from the test object's h-th (1 ≤ h ≤ 3) panel grid under the unit excitation of the installation positions of the j-th (j ≤ 2) mechanical equipment such as the motor (j = 1) and the water pump (j = 2). In this embodiment, the matrix T test is characterized as:

[0083]

[0084] Calculate the inverse matrix of the matrix T test In this embodiment is: For:

[0085]

[0086] Combined with the vibration acceleration matrix A test tested through experiments, calculate the vibration field distribution matrix A n of the outer plate of the surface ship in this embodiment:

[0087]

[0088] After matrix multiplication calculation, the vibration field distribution matrix A nis:

[0089] This application overcomes the drawbacks of the full simulation method in the prior art, where it is difficult to operate the vibration test on the actual installation position of mechanical equipment and thus accurate calculation inputs cannot be obtained, and the technical problem in the full test method that it is impossible to completely cover all areas of the ship's outer plate. For the vibration test experiment of this application, only a small number of vibration acceleration measurement points need to be arranged according to the rules, and the vibration field of the ship's outer plate on the water surface can be obtained time-saving, labor-saving and efficiently, providing a calculation and evaluation means for the design of the vibration and noise of the ship on the water surface.

[0090] The embodiment of this application also provides a device for determining the vibration field of the ship's outer plate on the water surface based on simulation and experiment. The specific implementation of this device can refer to the description in the method for determining the vibration field of the ship's outer plate on the water surface based on simulation and experiment, and the repeated parts will not be elaborated. As Figure 4 shown, this device includes:

[0091] A dividing module 401, configured to divide the ship's outer plate on the water surface into n plate grids representing the vibration field distribution based on the distribution of the rib positions and decks of the ship on the water surface, where n is an integer greater than or equal to 2;

[0092] An obtaining module 402, configured to obtain the number m of mechanical equipment started under the current working condition and the installation position corresponding to each mechanical equipment;

[0093] A simulation calculation module 403, configured to, for each installation position, simulate and calculate the vibration transfer matrix from the installation position to each plate grid under the action of a unit excitation force;

[0094] An experimental test module 404, configured to perform a vibration test experiment on the test object to obtain the vibration acceleration matrix corresponding to the test object, where the test object is obtained by extracting s plate grids with a target number from w plate grids, s is obtained based on m, and w is obtained based on n;

[0095] A vibration field calculation module 405, configured to calculate the vibration field of the ship's outer plate on the water surface based on the vibration transfer matrix and the vibration acceleration matrix.

[0096] In a specific embodiment, the vibration field calculation module 405 is configured to input the vibration transfer matrix and the vibration acceleration matrix into a preset vibration field calculation formula to obtain the vibration field of the ship's outer plate on the water surface output by the vibration field calculation formula.

[0097] Among them, the vibration field calculation formula includes:

[0098]

[0099] Among them, A n represents the vibration field of the ship's outer plate on the water surface, Tcal represents the vibration transfer matrix, represents the target vibration transfer matrix T with the dimension of the plate grid of the test object being s*m test the inverse matrix of, A test represents the vibration acceleration matrix.

[0100] Among them,

[0101] Among them, t cal_[e+(h-1)*L]j represents the vibration transfer value from the installation position of the jth (j≤m) mechanical equipment to the hth (2≤h≤s) plate grid of the test object under the action of a unit excitation, e represents a preset constant, and L represents a preset plate grid interval.

[0102] In a specific embodiment, the vibration transfer matrix includes:

[0103]

[0104] Among them, T cal represents the vibration transfer matrix, t cal_ij represents the vibration transfer value from the jth installation position to the ith plate grid under the action of a unit excitation force, i <= n, j <= m.

[0105] In a specific embodiment, the vibration acceleration matrix includes:

[0106]

[0107] Among them, A test represents the vibration acceleration matrix, a test_j represents the vibration acceleration value of the jth plate grid of the test object.

[0108] In a specific embodiment, the acquisition module 402 is further configured to acquire the number of devices to be deleted corresponding to the mechanical equipment installed on the outer plate of the water surface ship; calculate the difference between the number of plate grids and the number of devices to be deleted to obtain w.

[0109] In a specific embodiment, the plate grid size of the plate grid is obtained by taking the smaller value of the rib spacing value and the deck layer height value; the division module 401 is configured to divide the outer plate of the water surface ship into n plate grids representing the vibration field distribution based on the plate grid size.

[0110] In a specific embodiment, s = m + 1.

[0111] Figure 5 Illustrates a schematic physical structure diagram of an electronic device, such as Figure 5As shown in the figure, the electronic device may include: a processor 501, a communications interface 502, a memory 503, and a communication bus 504. Among them, the processor 501, the communications interface 502, and the memory 503 complete communication with each other through the communication bus 504. The processor 501 may call the logical instructions in the memory 503 to execute the method for determining the vibration field of the outer plate of a surface ship based on simulation and test.

[0112] In addition, when the logical instructions in the above-mentioned memory 503 are implemented in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, may be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0113] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the method for determining the vibration field of the outer plate of a surface ship based on simulation and test provided by the above-mentioned various methods.

[0114] On yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is implemented to execute the method for determining the vibration field of the outer plate of a surface ship based on simulation and test provided by the above-mentioned various embodiments.

[0115] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative labor.

[0116] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0117] Finally, it should be noted that the above is only the preferred implementation of the present application, and the present application is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present application should be considered to be included in the scope of protection of the present application.

Claims

1. A method for determining the vibration field of a surface hull outer plate based on simulation and experiment, characterized in that: The method comprises: Based on the rib position and deck distribution of the surface ship, the outer plate of the surface ship is divided into n plate grids representing the distribution of the vibration field, wherein n is an integer greater than or equal to 2; Obtain the number m of mechanical devices turned on under the current operating condition and the installation position corresponding to each of the mechanical devices; For each of the installation positions, a vibration transfer matrix from the installation position to each of the panel grids under the action of a unit excitation force is simulated and calculated; Performing a vibration test on a test object to obtain a vibration acceleration matrix corresponding to the test object, wherein the test object is obtained by extracting a target number s of the plate grids from the w plate grids, the s is obtained based on the m, and the w is obtained based on the n; Based on the vibration transfer matrix and the vibration acceleration matrix, the vibration field of the outer plate of the surface hull is calculated.

2. The method for determining the vibration field of the outer plate of a surface ship based on simulation and experiment according to claim 1 is characterized in that: Based on the vibration transfer matrix and the vibration acceleration matrix, the vibration field of the outer plate of the surface ship is calculated, including: Inputting the vibration transfer matrix and the vibration acceleration matrix into a preset vibration field calculation formula to obtain the vibration field of the surface hull outer plate output by the vibration field calculation formula; Wherein, the vibration field calculation formula includes: Among them, A n represents the vibration field of the outer plate of the hull on the water surface, T cal represents the vibration transfer matrix, The target vibration transfer matrix T of the plate grid of the test object with a dimension of s*m test The inverse matrix, A test represents the vibration acceleration matrix; in, Among them, t cal_[e+(h-1)*L]j It represents the vibration transfer value from the installation position of the j-th (j≤m) mechanical equipment to the h-th (2≤h≤s) plate grid of the test object under unit excitation, e represents a preset constant, and L represents a preset plate grid interval.

3. The method for determining the vibration field of the outer plate of a surface ship based on simulation and experiment according to claim 1 is characterized in that: The vibration transfer matrix includes: Among them, T cal represents the vibration transfer matrix, t cal_ij It represents the vibration transmission value from the j-th installation position to the i-th panel under the unit excitation force, i<=n, j<=m.

4. The method for determining the vibration field of the outer plate of a surface ship based on simulation and experiment according to claim 1 is characterized in that: The vibration acceleration matrix includes: Among them, A test represents the vibration acceleration matrix, a test_j It represents the vibration acceleration value of the jth panel of the test object.

5. The method for determining the vibration field of the outer plate of a surface ship based on simulation and experiment according to any one of claims 1 to 4, characterized in that: After obtaining the number of mechanical devices that are turned on under the current operating conditions, it also includes: Obtain the number of devices to be deleted corresponding to the mechanical devices installed on the outer plate of the surface hull; The difference between the number of board grids and the number of devices to be deleted is calculated to obtain w.

6. The method for determining the vibration field of the outer plate of a surface ship based on simulation and experiment according to any one of claims 1 to 4, characterized in that: The panel size of the panel is obtained by taking the smaller value of the rib spacing value and the deck layer height value; The outer plate of the surface hull is divided into n plate grids that characterize the distribution of the vibration field, including: Based on the panel size, the outer plate of the surface hull is divided into n panel grids that characterize the distribution of the vibration field.

7. The method for determining the vibration field of the outer plate of a surface ship based on simulation and experiment according to claim 1 is characterized in that: s=m+1.

8. A device for determining the vibration field of the outer plate of a surface ship based on simulation and experiment, characterized in that: include: A division module, for dividing the outer plate of the surface ship into n plate grids representing the distribution of the vibration field based on the rib position and deck distribution of the surface ship, wherein n is an integer greater than or equal to 2; An acquisition module is used to acquire the number m of mechanical devices turned on under the current working condition and the installation position corresponding to each of the mechanical devices; A simulation calculation module, for simulating and calculating, for each of the installation positions, a vibration transfer matrix from the installation position to each of the panel grids under the action of a unit excitation force; An experimental test module, used for performing a vibration test on a test object to obtain a vibration acceleration matrix corresponding to the test object, wherein the test object is obtained by extracting a target number s of the plate grids from the w plate grids, the s is obtained based on the m, and the w is obtained based on the n; The vibration field calculation module is used to calculate the vibration field of the outer plate of the surface ship based on the vibration transfer matrix and the vibration acceleration matrix.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the method for determining the vibration field of the outer plate of a surface ship based on simulation and experiment as described in any one of claims 1 to 7 are implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for determining the vibration field of the outer plate of a surface ship based on simulation and experiment as described in any one of claims 1 to 7 are implemented.

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