A method, device and equipment for processing ship model information

Abstract

The present invention provides a method, device, and apparatus for processing ship model information. The processing method comprises: obtaining three-dimensional ship model information; the three-dimensional ship model information comprises ship hull structure information and ship attribute information; extracting feature data from the three-dimensional ship model information to obtain ship feature data; converting the ship feature data according to a preset format to obtain ship data in a target format; processing the target format ship data according to the specifications of a two-dimensional hull structure cross-sectional model to obtain a two-dimensional hull structure cross-sectional model; the two-dimensional hull structure cross-sectional model comprises a two-dimensional hull cross-sectional view and hull structure attribute information. The present invention can quickly convert a three-dimensional ship model into a two-dimensional hull structure cross-sectional model, and evaluate and approve the ship structure strength based on the two-dimensional hull cross-sectional view and hull structure attribute information, thereby improving approval efficiency and having the advantage of cost savings.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and also to a method, device and equipment for processing ship model information. Background Art

[0002] Traditionally, design approval for new shipbuilding projects relies on two-dimensional structural drawings. When evaluating design proposals, ship designers or plan review engineers must manually create a two-dimensional cross-sectional model of the hull structure within classification society rule requirements assessment software based on the hull structure dimensions in the two-dimensional drawings. This modeling process is cumbersome and prone to errors. With the widespread adoption and widespread application of three-dimensional modeling software in the ship design phase, digital models are replacing traditional two-dimensional structural drawings. The information required for design approval can be directly extracted from the model, allowing standard requirements assessment and plan review to be completed digitally, improving design review efficiency. Existing general-purpose geometry exchange formats, when converting three-dimensional ship models to two-dimensional cross-sectional models, contain geometric errors, fail to carry over ship structural attributes, and fail to preserve the relationships between components within the hull structure model. This makes the exchanged model difficult to edit and modify, impacting approval efficiency. The open three-dimensional exchange standard for ship classification cannot directly obtain a two-dimensional cross-sectional model of the hull structure used for classification society descriptive rule requirements assessment from three-dimensional modeling software. Furthermore, due to the complexity of the 3D model, there is a risk of incomplete information transfer during the exchange process between heterogeneous systems, hindering the efficiency of rule requirements assessment. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method, device and equipment for processing ship model information to solve the problem that errors occur when converting the existing three-dimensional ship model into a two-dimensional cross-sectional model and the efficiency of the specification requirement assessment cannot be improved.

[0004] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0005] A method for processing ship model information, comprising:

[0006] Acquire three-dimensional model information of the ship; the three-dimensional model information of the ship includes hull structure information of the ship and attribute information of the ship;

[0007] Extracting feature data from the three-dimensional ship model information to obtain ship feature data;

[0008] Convert the ship characteristic data into a target format according to a preset format to obtain ship data;

[0009] The ship data in the target format is processed according to the specification of the hull structure two-dimensional cross-sectional model to obtain the hull structure two-dimensional cross-sectional model; the hull structure two-dimensional cross-sectional model includes a hull two-dimensional cross-sectional view and hull structure attribute information.

[0010] Optionally, obtain the ship's 3D model information, including:

[0011] Obtain a three-dimensional model of the ship;

[0012] The three-dimensional model information of the ship is obtained according to the three-dimensional model diagram of the ship, the hull structure information of the ship, and the attribute information of the ship.

[0013] Optionally, extracting feature data from the three-dimensional ship model information to obtain ship feature data includes:

[0014] Extracting feature data from the three-dimensional ship model to obtain geometric information and position information of the ship structure;

[0015] Ship characteristic data is obtained according to the geometric information of the ship structure and the position information of the ship structure.

[0016] Optionally, converting the ship characteristic data into a format according to a preset format to obtain ship data in a target format includes:

[0017] Converting the geometric information of the ship structure into a target format according to preset geometric constraints to obtain geometric information in a target format;

[0018] Convert the format of the position information of the ship structure according to the preset association relationship between the ship structures to obtain the position information in a target format;

[0019] The ship data in the target format is obtained according to the geometric information in the target format and the position information in the target format.

[0020] Optionally, obtaining a two-dimensional sectional model of the hull structure according to the specification of the two-dimensional sectional model of the hull structure from the ship data in the target format includes:

[0021] Processing the ship data in the target format according to the specification of the two-dimensional cross-sectional model of the hull structure to obtain a two-dimensional cross-sectional view of the hull;

[0022] Obtaining hull structure attribute information according to the ship data in the target format and a preset data structure;

[0023] A two-dimensional cross-sectional model of the hull structure is obtained according to the two-dimensional hull cross-sectional view and the hull structure attribute information.

[0024] Optionally, the method further includes:

[0025] The ship structure strength is evaluated based on the two-dimensional cross-sectional model of the hull structure.

[0026] Optionally, evaluating the ship structure strength based on the two-dimensional cross-sectional model of the hull structure includes:

[0027] Calculating the strength data of the hull beam according to the two-dimensional cross-sectional model of the hull structure;

[0028] Calculating the strength data of the ship's plating and frame according to the two-dimensional cross-sectional model of the hull structure;

[0029] The ship structure strength is evaluated based on the strength data of the hull beam and the strength data of the ship plating and frame.

[0030] A second aspect of the present invention provides a device for processing ship model information, comprising:

[0031] An acquisition module is used to acquire three-dimensional model information of a ship; the three-dimensional model information of the ship includes hull structure information of the ship and attribute information of the ship;

[0032] An extraction module is used to extract feature data from the three-dimensional model information of the ship to obtain ship feature data;

[0033] a conversion module, configured to convert the ship characteristic data into a format according to a preset format to obtain ship data in a target format;

[0034] The processing module is used to process the ship data in the target format according to the specifications of the hull structure two-dimensional cross-sectional model to obtain the hull structure two-dimensional cross-sectional model; the hull structure two-dimensional cross-sectional model includes a hull two-dimensional cross-sectional view and hull structure attribute information.

[0035] According to a third aspect of the present invention, a computing device is provided, comprising: a processor and a memory storing a computer program, wherein when the computer program is executed by the processor, the method according to the first aspect is executed.

[0036] A fourth aspect of the present invention provides a computer-readable storage medium storing instructions, which, when executed on a computer, causes the computer to execute the method described in the first aspect.

[0037] The above solution of the present invention includes at least the following beneficial effects:

[0038] The above-mentioned scheme of the present invention extracts feature data from the acquired three-dimensional ship model information to obtain ship feature data, then converts the ship feature data into a target format according to a preset format to obtain ship data in a target format, and finally processes the ship data in the target format according to the specifications of the two-dimensional sectional model of the hull structure to obtain a two-dimensional sectional model of the hull structure. The three-dimensional ship model can be quickly converted into a two-dimensional sectional model of the hull structure, and the ship structure strength can be evaluated and approved based on the two-dimensional sectional view of the hull and the hull structure attribute information in the two-dimensional sectional model of the hull structure, thereby improving the approval efficiency and having the advantage of saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 1 is a flow chart of a method for processing ship model information in an embodiment of the present invention;

[0040] Figure 2 Schematic diagram of line segment nodes of a longitudinal panel frame in an embodiment of the present invention;

[0041] Figure 3 Schematic diagram of the structure of a basic panel in a two-dimensional cross-sectional model of a hull structure in an embodiment of the present invention;

[0042] Figure 4 Schematic diagram of the structure of the basic panel in the three-dimensional ship model according to the embodiment of the present invention;

[0043] Figure 5 is a data schema diagram of a ship (Ship_T) in an embodiment of the present invention;

[0044] Figure 6 1 is a data schema diagram of a longitudinal panel (LPanel_T) in an embodiment of the present invention;

[0045] Figure 7 is a two-dimensional cross-sectional view of a hull in an embodiment of the present invention;

[0046] Figure 8 It is a three-dimensional model of a ship designed using three-dimensional ship design software;

[0047] Figure 9 Schematic diagram of the inner bottom plate frame in a two-dimensional cross-sectional model of a double-hull oil tanker in an embodiment of the present invention;

[0048] Figure 10 2 is a schematic diagram of the structure of a device for processing ship model information in an embodiment of the present invention.

[0049] Explanation of reference numerals: 21 - corner point, 22 - intersection point, 31 - basic plate grid, 41 - longitudinal frame, 42 - transverse frame, 71 - plate row, 72 - two-dimensional longitudinal frame, 73 - two-dimensional transverse frame, 74 - opening. DETAILED DESCRIPTION

[0050] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0051] like Figure 1 As shown, an embodiment of the present invention provides a method for processing ship model information, comprising the following steps:

[0052] Step 101: Acquire three-dimensional ship model information; the three-dimensional ship model information includes ship hull structure information and ship attribute information;

[0053] Step 102: extracting feature data from the three-dimensional ship model information to obtain ship feature data;

[0054] Step 103: converting the ship characteristic data into a format according to a preset format to obtain ship data in a target format;

[0055] Step 104 : Process the target format ship data according to the specification of the hull structure two-dimensional cross-sectional model to obtain the hull structure two-dimensional cross-sectional model; the hull structure two-dimensional cross-sectional model includes a hull two-dimensional cross-sectional view and hull structure attribute information.

[0056] The method for processing ship model information proposed in an embodiment of the present invention extracts feature data from the acquired three-dimensional ship model information to obtain ship feature data, then converts the ship feature data into a target format according to a preset format to obtain ship data in a target format, and finally processes the ship data in the target format according to the specifications of a two-dimensional hull structure section model to obtain a two-dimensional hull structure section model. The method can quickly convert the three-dimensional ship model into a two-dimensional hull structure section model, and evaluate and approve the ship structure strength based on the two-dimensional hull section view and hull structure attribute information of the two-dimensional hull structure section model, thereby improving approval efficiency and having the advantage of cost savings.

[0057] In an optional embodiment of the present invention, step 101 includes:

[0058] Step 1011, obtaining a three-dimensional model of the ship;

[0059] Step 1012: Acquire the ship's hull structure information and ship attribute information;

[0060] Step 1013: Obtain the three-dimensional model information of the ship according to the three-dimensional model diagram of the ship, the hull structure information of the ship, and the attribute information of the ship.

[0061] Specifically, the 3D model drawing of the ship awaiting approval can be obtained from 3D ship design software. The hull structure information and ship attribute information corresponding to the 3D model drawing can also be obtained from the 3D ship design software. Ship attribute information generally includes information such as the ship name, ship type, main dimensions, and weight. Hull structure information includes information such as rib position tables, hull girder loads, cabin distribution, and hull plate structure. Hull girder loads include the allowable vertical still water bending moment, allowable vertical still water shear force, and torsional loads under different loading conditions. Cabin distribution information includes cabin name, type, location range, center of gravity coordinates, and cabin capacity table. Hull plate structure information generally includes the name, type, geometry, dimensions, and material of structural components such as plating and ribs. The ultimately obtained 3D ship model information includes the 3D ship model drawing, as well as the hull structure information and ship attribute information corresponding to the 3D ship model drawing.

[0062] In an optional embodiment of the present invention, step 102 includes:

[0063] Step 1021: extract feature data from the three-dimensional ship model to obtain geometric information and position information of the ship structure;

[0064] Step 1022: Obtain ship characteristic data based on the geometric information of the ship structure and the position information of the ship structure.

[0065] Specifically, feature data is extracted from the 3D ship model at a specified longitudinal position (X coordinate) according to the tree structure of the 2D cross-sectional model, and relationships are established between the feature data. For example, the ship's geometric information describes the shape and dimensions (e.g., length, curvature, width, etc.) of various hull structures (e.g., the deck). Positional information describes the coordinate locations of various hull structures, such as the specific location of the relevant plating, ribs, and openings (e.g., the coordinates of rib No. X on the deck are (X1, Y1). Based on these coordinates, the position of rib No. X on the ship can be clearly determined, facilitating the generation of a 2D cross-sectional model). Extract common data from the ship's hull structure, build a feature library, and establish an association between the hull structure and the feature library; build a profile cross-section library (such as T-sections, angle steel, etc.) based on the cross-sectional shapes and sizes of all the frame materials in the hull structure; build a profile library based on the material types of all plates and frames (such as steel, aluminum alloy, etc.); build an opening library based on the shapes and sizes of all openings on the plates (such as circular holes, rectangular holes, etc.). Extract feature data from the three-dimensional ship model. This feature data needs to include the geometric information and position information of the ship structure as ship feature data. The final two-dimensional cross-sectional model of the hull structure can be quickly and easily obtained. Based on the two-dimensional hull cross-sectional view and hull structure attribute information contained therein, various hull strengths are calculated for subsequent calculations and ship structure strength assessments.

[0066] Here, the three-dimensional model of the ship, the hull structure information of the ship, and the attribute information of the ship can be first imported into the ship modeling software or platform to identify the various elements and components in the model (including identifying the boundary representation information of the ship model, such as vertices, edges, faces, etc.), and then, the size, shape, structural layout and other feature data of the hull can be extracted from the three-dimensional ship model. These feature data include the geometric information of the ship structure and the position information of the ship structure; the extracted feature data can then be preprocessed, and the preprocessing can be at least one of data cleaning, data sorting, and data conversion, and the preprocessed feature data is used as ship feature data.

[0067] In an optional embodiment of the present invention, step 103 includes:

[0068] Step 1031: converting the geometric information of the ship structure into a format according to preset geometric constraints to obtain geometric information in a target format;

[0069] Specifically, to avoid geometric accuracy errors during the conversion of a 3D ship model into a 2D cross-sectional model, before reconstructing the ship model, the ship structure's geometric information must be converted to the target format according to preset geometric constraints. This information is used to reconstruct the geometry during the 2D model conversion. This not only avoids geometric accuracy errors during model transfer, but also allows for convenient editing and modification of the imported model by modifying constraint parameters to support design changes. It should be noted that the preset geometric constraints refer to the geometric connections between different hull structures, such as the geometric connections between intersecting longitudinal plates. A structure composed of plating and ribs is called a plate structure. Various corresponding plates form the entire hull. From a structural perspective, the hull can be considered a combination of plates. A plate structure is a typical planar structure within a ship hull, consisting of intersecting ribs (or plates) and overlying plating. The plate structure is supported on all sides by adjacent plates. Common examples include deck plates, side plates, and bottom plates. Deck plating, side plating, and bottom plating are the deck structure or side and bottom structures within a compartment, respectively. In addition, there are also the entire bulkhead plating of the compartment. Figure 2 As shown, taking a longitudinal panel of a ship as an example, the intersection points with other longitudinal panel geometric lines are used as line segment nodes in the longitudinal panel. This ensures the geometric connection between the intersecting longitudinal panels and avoids the impact of geometric errors. The line segment nodes of the longitudinal panel include but are not limited to the corner points 21 of the longitudinal panel geometric line and the intersection points 22 with other longitudinal panel geometric lines.

[0070] In the present embodiment, the geometric description (geometric constraints) of the hull is only described at the longitudinal plate frame level. The plate rows, longitudinal frame members, transverse frame members, openings, etc. in the longitudinal frame do not have their own independent geometric descriptions. Instead, the geometric information is described by adding corresponding geometric constraints based on the geometry of the longitudinal frame to which they belong. As shown in Table 1, a plurality of geometrically related constraint parameters are used to form preset geometric constraints to ensure that when the three-dimensional model is converted into a two-dimensional model, the geometry of the plate rows, frame members and openings is consistent with the plate frame geometric information. The description in Table 1 is a description of geometrically related constraint parameters. For example, the geometric constraints of the plate rows refer to the plate width measured along the arc length on the longitudinal plate frame geometry. After the user imports the model into the ship-related specification assessment software, the geometric information of the plate rows, frame members and openings in the two-dimensional cross-sectional model of the hull structure can be easily edited by modifying the preset geometric constraints to try different design solutions.

[0071] Table 1 Geometric constraint parameters of sub-elements in the longitudinal plate frame

[0072]

[0073]

[0074] Step 1032: convert the format of the position information of the ship structure according to the preset association relationship between the ship structures to obtain the position information in a target format;

[0075] Here, the hull structure is different from general mechanical parts, which are assembled through components. The hull structure needs to be welded. It can be said that the structure of an entire ship is a part. For this reason, the hull structure cannot be split into independent parts for the exchange of model data. In other words, in the process of model data exchange, it is necessary to consider the interdependence between hull structures (such as the internal structure must be bounded by the deck and the hull, the skeleton needs to be associated with the reinforced plate frame, etc.). In the ship-related descriptive specification requirement evaluation software, in order to realize the evaluation function of the specification requirements, it is also necessary to reorganize the hull structure model data according to the requirements of engineering calculations and establish an association relationship, such as Figure 3 and Figure 4 As shown in the figure, for example, when obtaining the basic plate panel 31 in the buckling strength assessment through the 2D cross-section model of the hull structure, that is, the part of the plate row (a×b) without any frame and reinforcement in the domain, it is necessary to use the following formula: Figure 4 The three-dimensional model shows the relationship between the longitudinal frames 41, the transverse frames 42, and the plate rows.

[0076] In this embodiment, the format of the position information of the ship structure is converted by using the association relationship between preset ship structures. The longitudinal frame has sub-elements such as geometry (Geometry), plate column set (Components), stiffener set (Stiffeners, including longitudinal stiffeners and transverse stiffeners) and hole set (Holes), which effectively preserves the association relationship between the various structures of the ship's three-dimensional model.

[0077] Step 1033: Obtain ship data in the target format according to the geometric information in the target format and the position information in the target format.

[0078] Specifically, the ship data in the target format includes geometric information in the target format and position information in the target format. The ship data in the target format is used to subsequently generate a two-dimensional cross-sectional model of the hull structure.

[0079] In an optional embodiment of the present invention, step 104 includes:

[0080] Step 1041 , processing the ship data in the target format according to the specification of the hull structure two-dimensional cross-sectional model to obtain a hull two-dimensional cross-sectional view;

[0081] Here, the target format ship data is imported into the ship-related specification requirement assessment software to automatically generate a two-dimensional hull cross-section. It should be noted that the specification for the hull structure two-dimensional cross-section model in this embodiment can be the ship-related specification requirement assessment software, and other specifications or software can also be selected as needed.

[0082] Step 1042, obtaining hull structure attribute information according to the ship data in the target format and the preset data structure;

[0083] Specifically, the preset data structure is used to limit the presentation of the ship data in the target format. The preset data structure can be set according to actual needs, such as Figure 5 and Figure 6 The data schema diagram in the figure is a preset data structure. The target format ship data is in accordance with Figure 5 and Figure 6 The data pattern diagram is displayed on the interface.

[0084] Step 1043: Obtain a two-dimensional cross-sectional model of the hull structure according to the two-dimensional cross-sectional view of the hull and the hull structure attribute information.

[0085] It should be noted that when importing profiles, materials and openings of ship structures, data from the pre-stored profile library, material library and opening library can be retrieved for filling. When the material properties of multiple openings are consistent, only the same information needs to be retrieved from the material library or opening library, which increases data reusability and reduces the amount of model data.

[0086] Figure 5 This is the data model diagram of Ship (Ship_T). Figure 6 This is the data model diagram of the longitudinal panel (LPanel_T), according to Figure 5 、 Figure 6 The sub-elements of the ship and the sub-elements of the longitudinal plate frame are displayed (the data model diagram of XMLSchema is given by taking the ship and the longitudinal plate frame as an example). Tables 2 to 10 are the definitions of the main structures of the ship. According to the definition, the sub-elements of the data of each structure of the ship are selected and displayed according to the optional items. By adopting the XML Schema (a recommended standard for how to formally describe the elements of an XML document) model, it is self-describing and can define the data structure in a relatively clear way. It is also highly readable and can ensure the consistency of the understanding of the data information between both parties in the data information exchange. XML Schema supports the definition of namespaces. Different contents can be divided into multiple files for description, and the files can reference each other. General XML (Extensible Markup Language) editors provide consistency verification functions between XML documents and XML Schema models, which is convenient for verifying the consistency of exchange files with this exchange format.

[0087] by Figure 7 Taking the resulting 2D hull cross-section as an example, the 2D plate array 71 (Plate of LPanel_T), 2D longitudinal stiffener 72 (L Stiffener of LPanel_T), 2D transverse stiffener 73 (T Stiffener of LPanel_T), and 2D opening 74 (Hole of LPanel_T) are displayed. Simultaneously, geometric information (e.g., size, material) and positional information of the plate array, longitudinal stiffener, transverse stiffener, and opening can be displayed alongside the 2D hull cross-section according to a pre-set data structure. The addition of "2D" before the plate array, longitudinal stiffener, transverse stiffener, and opening is solely for distinction in other figures and does not limit the structure.

[0088] Table 2 Definition of Ship (Ship_T)

[0089]

[0090] Table 3 Definition of principal characteristics (Principal Particulars_T)

[0091]

[0092]

[0093]

[0094]

[0095] Table 4 Definition of Frame Table_T

[0096]

[0097] Table 5 Definition of hull girder load (Hull Girder Load_T)

[0098]

[0099] Table 6 Definition of allowable vertical still water bending moment

[0100]

[0101] Table 7 Definition of allowable vertical still water shear force

[0102]

[0103] Table 8 Definition of Torsion

[0104]

[0105] Table 9 Definition of Compartment_T

[0106]

[0107] Table 10 Definition of Cross Section_T

[0108]

[0109] In an optional embodiment of the present invention, the method further includes:

[0110] Step 105: Evaluate the strength of the ship structure based on the two-dimensional cross-sectional model of the hull structure.

[0111] Specifically, the required data can be automatically extracted from the final two-dimensional cross-sectional model of the hull structure, and the specification requirement evaluation and plan review can be completed in a digital manner, thereby improving the efficiency of design review.

[0112] In an optional embodiment of the present invention, step 105 includes:

[0113] Step 1051: Calculate the strength data of the hull girder based on the two-dimensional cross-sectional model of the hull structure;

[0114] Step 1052: Calculate the strength data of the ship's plating and frame based on the two-dimensional cross-sectional model of the hull structure;

[0115] Step 1053: Evaluate the ship structure strength based on the strength data of the hull beam and the strength data of the ship plating and frame.

[0116] Specifically, the required data is extracted from the 2D cross-sectional model of the hull structure and the hull structure attribute information to complete the specification-required calculations of the total longitudinal strength of the hull girder, the ultimate strength of the hull girder, the residual strength of the hull girder, the minimum size requirements of the plating and frame, the yield strength of the plating and frame, the buckling strength of the plating and frame, the fatigue strength of the longitudinal frame, and the water ingress strength. Based on the final results, the ship's structural strength is evaluated. This eliminates the need for ship designers to produce 2D drawings and for ship plan reviewers to manually create cross-sectional models based on drawing dimensions, achieving efficient collaboration between ship design and plan review, and shortening the ship design and construction cycle.

[0117] Specifically, the purpose of calculating the total longitudinal strength of the hull girder is to evaluate the longitudinal bending stress of the hull under still water and wave bending moments, to ensure that the hull has sufficient strength under normal operation and expected sea conditions; for example, the section bending stress σ is calculated according to the formula σ = MZ / I, where M is the bending moment acting on the hull section, Z is the distance from any member of the section to the horizontal neutral axis, and I is the moment of inertia of the section about the horizontal neutral axis.

[0118] The ultimate strength of the hull girder is calculated to determine the bending moment corresponding to the hull reaching its ultimate limit state. The ultimate bending capacity of the hull girder is the maximum bending moment capacity of the hull girder when the hull collapses. Hull girder failure is governed by the buckling, ultimate strength, and yielding of the longitudinal structure. By calculating the ultimate bending moment capacity of the hull section, the ultimate strength of the hull girder can be assessed, the actual strength reserve of the hull girder can be determined, and structural design can be optimized.

[0119] The purpose of calculating the residual strength of the hull girder is to evaluate the strength loss of the hull due to collision and grounding during service, as well as the remaining safety margin.

[0120] The purpose of calculating the minimum size requirement is to ensure that the hull structure meets the basic strength and stiffness requirements; for example, the formula Calculate the minimum size requirement of the plate column, where C is the slenderness ratio coefficient, R eH is the minimum yield stress of the plate row.

[0121] The yield strength of the plating and frame is used to assess whether the hull structure and components will undergo plastic deformation or yield under stress. For example, the formula σys = Py / S0 can be used, where σys is the yield strength of the plating and frame, Py is the load at physical yield or the load corresponding to the lower yield point, and S0 is the original cross-sectional area.

[0122] The buckling strength of plating and frames is used to evaluate the ability of hull structures and components to maintain stability and integrity when subjected to compressive forces.

[0123] The fatigue strength of longitudinal frames is used to evaluate the fatigue performance of longitudinal frames under alternating stress. The fatigue strength of longitudinal frames refers to the ability of longitudinal frames to withstand alternating stress without sustaining damage. It is usually expressed as the number of cycles required to withstand alternating stress cycles until fracture. By calculating the number of cycles of longitudinal frames under specified loading conditions, the fatigue life and fatigue strength of longitudinal frames can be determined, thereby ensuring the safety and reliability of ship structures.

[0124] Flooding resistance requirements assess the strength and stability of a hull damaged below the waterline. The pressure and impact forces that the hull can withstand underwater are calculated based on the hull's material, thickness, shape, and sealing properties. Specifically, the requirements consider the water pressure and flow rate that the hull structure can withstand under specific conditions, such as wind and waves, collisions, or other emergency situations.

[0125] Compare the above results with the corresponding evaluation criteria to evaluate the ship's structural strength. It should be noted that the above evaluation function is only for example purposes. Depending on the actual situation, other hull performance can also be calculated and evaluated.

[0126] The ship model information processing method proposed in the embodiment of the present invention can be used to directly extract the features and parameters required for the evaluation of ship-related descriptive specification requirements from the development of three-dimensional ship design software, including data information such as the ship's main dimensions, rib position table, hull girder load, cabin, cross section and its longitudinal plate frame (including related plate rows, frame materials and openings, etc.), pillars, resource library (including profile section library, material library, opening library) and unit measurement. A two-dimensional cross-sectional model is automatically created in the ship-related descriptive specification requirement evaluation software, and based on this two-dimensional cross-sectional model, multiple evaluation functions such as the calculation of the total longitudinal strength of the hull girder, the calculation of the ultimate strength of the hull girder, the calculation of the residual strength of the hull girder, the calculation of the minimum plate thickness and size requirements, the yield strength evaluation of the plate rows and frame materials, the buckling strength evaluation of the plate rows and frame materials, the fatigue strength evaluation of the longitudinal frame materials, and the evaluation of the water ingress strength requirements are completed as required by the specifications.

[0127] The SSD-2D format cross-section model XML file obtained by the ship model information processing method of the embodiment of the present invention has a lot of data (about 4000 lines). Therefore, in this embodiment, a plate frame ( Figure 9 The inner bottom plate frame of a double-hull oil tanker cross section shown in FIG is described as an example, and its XML code is shown below.

[0128] Among them: (1) Geometry: The geometry of this plate frame consists of 8 segments, among which Figure 9 The node numbered 5 is the intersection with the inner bottom longitudinal truss plate frame, and the nodes numbered 3, 4, 6, 7, and 8 are the locations of the plate seams;

[0129] (2) Components: This rack contains 7 rows of panels with widths of 0.017m, 3.6m, 4.09m, 4.09m, 3.6m, 3.7m, and 2.85m respectively;

[0130] (3) Stiffeners: This frame contains 24 longitudinal stiffeners. The positioning method uses the Y coordinate value from the starting node (MeasuringMode=Y+). The material in the material library is referenced by MaterialRef, and the profile section in the profile section library is referenced by SectionRef.

[0131] (4) There are no transverse frames or openings on this longitudinal frame.

[0132]

[0133]

[0134]

[0135] As shown in the above code, the ship model information processing method of the embodiment of the present invention can realize the model data interface between the three-dimensional design software and the hull structure assessment software. Figure 8 As shown, the user creates a three-dimensional ship design model in the three-dimensional design software, and uses the ship model information processing method of the embodiment of the present invention to automatically generate an SSD-2D format XML file through the export interface of the three-dimensional design software, and then automatically generates a two-dimensional cross-sectional model of the hull structure through the import interface of the hull structure assessment software (as shown in FIG. Figure 7 The model can be used to evaluate the strength of ship structures.

[0136] like Figure 10 As shown, an embodiment of the present invention provides a device 200 for processing ship model information, comprising:

[0137] The acquisition module 201 is used to acquire the three-dimensional model information of the ship; the three-dimensional model information of the ship includes the hull structure information and the attribute information of the ship;

[0138] An extraction module 202 is configured to extract feature data from the three-dimensional ship model information to obtain ship feature data;

[0139] The conversion module 203 is used to convert the ship characteristic data into a format according to a preset format to obtain ship data in a target format;

[0140] The processing module 204 is used to process the ship data in the target format according to the specifications of the hull structure two-dimensional cross-sectional model to obtain the hull structure two-dimensional cross-sectional model; the hull structure two-dimensional cross-sectional model includes a hull two-dimensional cross-sectional view and hull structure attribute information.

[0141] Optionally, obtain the ship's 3D model information, including:

[0142] Obtain a three-dimensional model of the ship;

[0143] The three-dimensional model information of the ship is obtained according to the three-dimensional model diagram of the ship, the hull structure information of the ship, and the attribute information of the ship.

[0144] Optionally, extracting feature data from the three-dimensional ship model information to obtain ship feature data includes:

[0145] Extracting feature data from the three-dimensional ship model to obtain geometric information and position information of the ship structure;

[0146] Ship characteristic data is obtained according to the geometric information of the ship structure and the position information of the ship structure.

[0147] Optionally, converting the ship characteristic data into a format according to a preset format to obtain ship data in a target format includes:

[0148] Converting the geometric information of the ship structure into a target format according to preset geometric constraints to obtain geometric information in a target format;

[0149] Convert the format of the position information of the ship structure according to the preset association relationship between the ship structures to obtain the position information in a target format;

[0150] The ship data in the target format is obtained according to the geometric information in the target format and the position information in the target format.

[0151] Optionally, obtaining a two-dimensional sectional model of the hull structure according to the specification of the two-dimensional sectional model of the hull structure from the ship data in the target format includes:

[0152] Processing the ship data in the target format according to the specification of the two-dimensional cross-sectional model of the hull structure to obtain a two-dimensional cross-sectional view of the hull;

[0153] Obtaining hull structure attribute information according to the ship data in the target format and a preset data structure;

[0154] A two-dimensional cross-sectional model of the hull structure is obtained according to the two-dimensional hull cross-sectional view and the hull structure attribute information.

[0155] Optionally, the apparatus 200 further includes:

[0156] The evaluation module 205 is configured to evaluate the strength of the ship structure based on the two-dimensional cross-sectional model of the hull structure.

[0157] Optionally, evaluating the ship structure strength based on the two-dimensional cross-sectional model of the hull structure includes:

[0158] Calculating the strength data of the hull beam according to the two-dimensional cross-sectional model of the hull structure;

[0159] Calculating the strength data of the ship's plating and frame according to the two-dimensional cross-sectional model of the hull structure;

[0160] The ship structure strength is evaluated based on the strength data of the hull beam and the strength data of the ship plating and frame.

[0161] The ship model information processing device proposed in the embodiment of the present invention extracts feature data from the acquired three-dimensional ship model information to obtain ship feature data, then converts the ship feature data into a target format according to a preset format to obtain ship data in a target format, and finally processes the ship data in the target format according to the specifications of the two-dimensional hull structure section model to obtain the two-dimensional hull structure section model. The three-dimensional ship model can be quickly converted into a two-dimensional hull structure section model, and the ship structure strength can be evaluated and approved based on the two-dimensional hull section diagram and hull structure attribute information of the two-dimensional hull structure section model, thereby improving the approval efficiency and having the advantage of cost saving.

[0162] It should be noted that the device is a device corresponding to the above method, and all implementations in the above method embodiment are applicable to the embodiment of the device and can achieve the same technical effects, which will not be described in detail in this embodiment.

[0163] An embodiment of the present invention further provides a computing device comprising: a processor and a memory storing a computer program. When the computer program is executed by the processor, the computer program performs the method described in any of the above embodiments. All implementations in the above method embodiments are applicable to the embodiments of this device and can achieve the same technical effects. These are not further described in this embodiment.

[0164] An embodiment of the present invention further provides a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method described in any of the above embodiments. All implementations in the above method embodiments are applicable to the embodiments of the device and can achieve the same technical effects. These are not further described in this embodiment.

[0165] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for processing ship model information, characterized in that: include: Obtain ship 3D model information; The three-dimensional ship model information includes the ship's hull structure information and the ship's attribute information; Extracting feature data from the three-dimensional ship model information to obtain ship feature data; Convert the ship characteristic data into a target format according to a preset format to obtain ship data; Processing the target format ship data according to the specification of the hull structure two-dimensional cross-sectional model to obtain the hull structure two-dimensional cross-sectional model; the hull structure two-dimensional cross-sectional model includes a hull two-dimensional cross-sectional view and hull structure attribute information; Evaluating the ship structure strength based on the two-dimensional cross-sectional model of the hull structure; The ship structure strength is evaluated based on the two-dimensional cross-sectional model of the hull structure, including: Calculating the strength data of the hull beam according to the two-dimensional cross-sectional model of the hull structure; Calculating the strength data of the ship's plating and frame according to the two-dimensional cross-sectional model of the hull structure; The ship structure strength is evaluated based on the strength data of the hull beam and the strength data of the ship plate and frame; wherein, data is extracted from the two-dimensional cross-sectional model of the hull structure and the hull structure attribute information to complete the calculation of the total longitudinal strength of the hull beam, the ultimate strength of the hull beam, the residual strength of the hull beam, the minimum size requirement of the plate and frame, the yield strength of the plate and frame, the buckling strength of the plate and frame, the fatigue strength of the longitudinal frame, and the water ingress strength. According to the final results , the structural strength of the ship is evaluated; the section bending stress is calculated according to the formula σ=MZ / I, where σ is the section bending stress, M is the bending moment acting on the hull section, Z is the distance from any member of the section to the horizontal neutral axis, and I is the moment of inertia of the section about the horizontal neutral axis; the yield strength of the plate row and the frame is calculated using the formula σys=Py / S0, where σys is the yield strength of the plate row and the frame, Py is the load at physical yield or the load corresponding to the lower yield point, and S0 is the original cross-sectional area.

2. The method for processing ship model information according to claim 1, characterized in that: Obtain ship 3D model information, including: Obtain a three-dimensional model of the ship; The three-dimensional model information of the ship is obtained according to the three-dimensional model diagram of the ship, the hull structure information of the ship, and the attribute information of the ship.

3. The method for processing ship model information according to claim 1, characterized in that: Extracting feature data from the three-dimensional ship model information to obtain ship feature data includes: Extracting feature data from the three-dimensional ship model to obtain geometric information and position information of the ship structure; Ship characteristic data is obtained according to the geometric information of the ship structure and the position information of the ship structure.

4. The method for processing ship model information according to claim 3, characterized in that: Converting the ship characteristic data into a target format according to a preset format to obtain ship data in a target format includes: Converting the geometric information of the ship structure into a target format according to preset geometric constraints to obtain geometric information in a target format; Convert the format of the position information of the ship structure according to the preset association relationship between the ship structures to obtain the position information in a target format; The ship data in the target format is obtained according to the geometric information in the target format and the position information in the target format.

5. The method for processing ship model information according to claim 1, characterized in that: Obtaining a two-dimensional sectional model of a hull structure from the ship data in the target format according to the specification of the two-dimensional sectional model of the hull structure, including: Processing the ship data in the target format according to the specification of the two-dimensional cross-sectional model of the hull structure to obtain a two-dimensional cross-sectional view of the hull; Obtaining hull structure attribute information according to the ship data in the target format and a preset data structure; A two-dimensional cross-sectional model of the hull structure is obtained according to the two-dimensional hull cross-sectional view and the hull structure attribute information.

6. A device for processing ship model information, characterized in that: include: An acquisition module is used to obtain the three-dimensional model information of the ship; The three-dimensional ship model information includes the ship's hull structure information and the ship's attribute information; An extraction module is used to extract feature data from the three-dimensional model information of the ship to obtain ship feature data; a conversion module, configured to convert the ship characteristic data into a format according to a preset format to obtain ship data in a target format; a processing module for processing the ship data in the target format according to the specification of the hull structure two-dimensional cross-sectional model to obtain the hull structure two-dimensional cross-sectional model; the hull structure two-dimensional cross-sectional model includes a hull two-dimensional cross-sectional view and hull structure attribute information; An evaluation module, configured to evaluate the strength of the ship structure based on the two-dimensional cross-sectional model of the hull structure; The ship structure strength is evaluated based on the two-dimensional cross-sectional model of the hull structure, including: Calculating the strength data of the hull beam according to the two-dimensional cross-sectional model of the hull structure; Calculating the strength data of the ship's plating and frame according to the two-dimensional cross-sectional model of the hull structure; The ship structure strength is evaluated based on the strength data of the hull beam and the strength data of the ship plate and frame; wherein, data is extracted from the two-dimensional cross-sectional model of the hull structure and the hull structure attribute information to complete the calculation of the total longitudinal strength of the hull beam, the ultimate strength of the hull beam, the residual strength of the hull beam, the minimum size requirement of the plate and frame, the yield strength of the plate and frame, the buckling strength of the plate and frame, the fatigue strength of the longitudinal frame, and the water ingress strength. According to the final results , the structural strength of the ship is evaluated; the section bending stress is calculated according to the formula σ=MZ / I, where σ is the section bending stress, M is the bending moment acting on the hull section, Z is the distance from any member of the section to the horizontal neutral axis, and I is the moment of inertia of the section about the horizontal neutral axis; the yield strength of the plate row and the frame is calculated using the formula σys=Py / S0, where σys is the yield strength of the plate row and the frame, Py is the load at physical yield or the load corresponding to the lower yield point, and S0 is the original cross-sectional area.

7. A computing device, characterized in that include: A processor and a memory storing a computer program, wherein when the computer program is executed by the processor, the method according to any one of claims 1 to 5 is performed.

8. A computer-readable storage medium, characterized in that The device stores instructions, which, when executed on a computer, enable the computer to execute the method according to any one of claims 1 to 5.

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