Ship transition skew design method and system

Abstract

The invention provides a ship transition skew design system and method, and the system comprises a data acquisition and analysis module which obtains a ship three-dimensional design model, and automatically extracts the geometric information of a plate and the process attribute information of a butt joint boundary from the ship three-dimensional design model; the rule management database is used for storing transition skew discrimination rules and a design rule base; the judging module is used for judging a target docking boundary needing to be provided with a transition slope according to a judging rule; the parameter design module is used for automatically calculating and generating corresponding transition skew geometric parameters for each target docking boundary; and the model updating module is used for modifying the ship three-dimensional design model according to the transitional oblique geometric parameters. The system integrates discrimination rules and design specifications, and reduces the dependence of design on designers, reduces errors caused by human experience and improves the design quality when the transition skew parameters are judged and calculated.

Description

Technical Field

[0001] This invention relates to the field of ship structure design technology, and more specifically, to a method and system for designing ship transition slopes. Background Technology

[0002] As the shipbuilding industry continues to evolve towards digitalization and intelligence, digital design technology based on 3D models has become a core tool in modern ship design and manufacturing. This method greatly enhances the intuitiveness, collaboration, and data consistency of hull structure design. However, in the detailed design phase, especially when dealing with complex structural nodes, it still heavily relies on human experience and manual operation; the design of transition slopes between hull plates is one such example.

[0003] In ship hull structures, to ensure the smooth transfer of structural strength and meet welding process specifications, when there is a significant thickness difference between two butt joint plates, a continuous bevel, known as a "transition bevel," must be machined on the thicker plate to achieve a gradual transition in plate thickness. The specific design parameters of the transition bevel are not fixed values ​​but need to be determined comprehensively based on various factors, including the thickness difference at the joint, the welding method used (such as submerged arc welding, CO2 gas shielded welding, etc.), the bevel type (such as V-type, Y-type, X-type, etc.), and the relative position of the bevel to the thickness difference. In traditional design processes, designers must manually identify each butt joint boundary with a thickness difference based on the detailed drawings in the design specification manual, and then manually calculate the corresponding formulas or empirical values ​​for different working conditions. This not only makes the design process cumbersome and labor-intensive but also easily leads to design deviations due to human error or calculation errors.

[0004] This highly manual design approach is inefficient. The hull of a large ship contains tens of thousands of plate joints. Manually judging and calculating each one consumes a lot of valuable design time. Moreover, the design quality is inconsistent, making it difficult to ensure that all transition angle designs fully and accurately meet the specifications. This can easily leave quality problems for subsequent construction and lead to waste of materials and time. Summary of the Invention

[0005] In view of the problems existing in the design of ship transition slopes in the prior art, this application provides a ship transition slope design method and system to solve the problems of low efficiency and inconsistent quality caused by the reliance on designers to design ship transition slopes one by one based on experience in the prior art.

[0006] To achieve the above and other related objectives, the present invention provides a ship transition skew design system, comprising:

[0007] The data acquisition and analysis module acquires the ship's three-dimensional design model and automatically extracts the geometric information of the plates and the process attribute information of the docking boundary from the ship's three-dimensional design model;

[0008] The rule management database stores transition slope discrimination rules and a design rule library;

[0009] The discrimination module is connected to the data acquisition and parsing module and the rule management database. The discrimination module determines the target docking boundary that needs to be opened with a transition slope according to the discrimination rules.

[0010] The parameter design module, for each target docking boundary, matches the design rules in the design rule library according to the process attribute information of the docking boundary, and automatically calculates and generates the corresponding transition slope geometry parameters.

[0011] The model update module modifies the ship's three-dimensional design model according to the transition slope geometric parameters to generate a ship's three-dimensional design model that includes the transition slope.

[0012] Optionally, the geometric information includes: spatial coordinates and plate thickness.

[0013] Optionally, the data acquisition and analysis module further includes: calculating the thickness difference Δt between adjacent plates at the docking boundary based on the geometric information of the plate, where Δt = |t1 - t2|.

[0014] Optionally, the process attribute information includes: the welding method used for the butt joint boundary, the bevel type, the bevel angle, and the correspondence between the bevel and the plate thickness difference direction.

[0015] Optionally, the discrimination rule includes at least the following: for any mating boundary, if the thickness difference between the plates on both sides is greater than or equal to a set threshold, then it is determined that the mating boundary needs to be opened with a transition slope.

[0016] Optionally, the set threshold is between 3mm and 5mm.

[0017] Optionally, the design rules include a calculation formula for calculating the transition slope length based on the geometric information and the process attribute information.

[0018] Optionally, the formula for calculating the transition slope length is: L=k1*Δt+k2*h, where L is the transition slope length, Δt is the thickness difference between the plates on both sides of the butt joint boundary, h is the relevant bevel height, and k1 and k2 are coefficients determined according to the welding method, bevel type, and the relative positional relationship between the bevel and the plate thickness difference.

[0019] This application also provides a method for designing a ship transition slope, including the following steps:

[0020] S1: Establish the discrimination principle and design rules for the transition slope, and save the discrimination principle and design rules to the rule management database;

[0021] S2: Based on the ship's three-dimensional design model, automatically acquire the geometric and process attribute information of all plate joint edges;

[0022] S3: Based on the discrimination principle, automatically select the target docking plate frame boundary that needs to have a transition slope from all docking plate frame boundaries;

[0023] S4: Based on the process attribute information of the target docking plate frame boundary, match the corresponding design rules and automatically calculate the transition slope geometry parameters of the target docking plate frame boundary;

[0024] S5: Based on the transition slope geometric parameters, the three-dimensional design model is geometrically modified.

[0025] An electronic device is also provided, comprising:

[0026] Memory, which stores computer programs;

[0027] The processor, communicatively connected to the memory, executes the computer program to implement any one of the ship transition slope design methods described above.

[0028] As described above, the ship transition skew design system and method provided by the present invention have at least the following beneficial technical effects:

[0029] The ship transition skew design system and method provided in this application can automatically parse the ship's 3D model to obtain the geometric and technological attribute information of the hull plates. The system unifies and integrates the discrimination rules and design specifications into the ship transition skew design system. When judging and calculating transition skew parameters, the system reduces errors caused by human experience and calculation, improves design quality, and reduces reliance on designers, ensuring the stability and continuous improvement of design capabilities. Furthermore, the system's rule management module allows for the configuration and updating of discrimination thresholds, design formulas, and other rules according to different classification society specifications, project-specific requirements, and new materials and processes. Therefore, this system can adapt to various ship types. Attached Figure Description

[0030] Figure 1 The diagram shown is a schematic representation of the ship transition slope design system provided in Embodiment 1.

[0031] Figure 2 The diagram shown is a schematic diagram of a docking plate frame provided in Embodiment 1.

[0032] Figure 3aShown is a schematic structural diagram of a butt plate rack where the welding method is submerged arc automatic welding and the groove type is an open groove only.

[0033] Figure 3b Shown is a schematic structural diagram of a butt plate rack where the welding method is submerged arc automatic welding and the groove type is Y-shaped and the groove and the plate thickness difference are on different sides.

[0034] Figure 3c Shown is a schematic structural diagram of a butt plate rack where the welding method is submerged arc automatic welding and the groove type is Y-shaped and the groove and the plate thickness difference are on the same side.

[0035] Figure 3d Shown is a schematic structural diagram of a butt plate rack where the welding method is submerged arc automatic welding, the groove type is X-shaped, the plate thickness difference is on the side of the larger angle of the X-shaped groove, and if the larger angle α < 45° and the plate thickness difference t2 - t1 > 20 mm.

[0036] Figure 3e Shown is a schematic structural diagram of a butt plate rack where the welding method is submerged arc automatic welding, the groove type is X-shaped, the plate thickness difference is on the side of the larger angle of the X-shaped groove, and if the larger angle α < 45° and the plate thickness difference 3 mm < t2 - t1 ≤ 20 mm.

[0037] Figure 3f Shown is a schematic structural diagram of a butt plate rack where the welding method is submerged arc automatic welding, the groove type is X-shaped, the plate thickness difference is on the side of the larger angle of the X-shaped groove, the larger angle α ≥ 45°, and the plate thickness difference t2 - t1 > 20 mm.

[0038] Figure 3g Shown is a schematic structural diagram of a butt plate rack when the welding method is submerged arc automatic welding, the groove type is X-shaped, the plate thickness difference is on the side of the larger angle of the X-shaped groove, the larger angle θ ≥ 45°, and the plate thickness difference 3 mm < t2 - t1 ≤ 20 mm.

[0039] Figure 3h Shown is a schematic structural diagram of a butt plate rack where the welding method is submerged arc automatic welding, the groove type is X-shaped and the plate thickness difference is on the side of the smaller angle of the X-shaped groove, and the plate thickness difference t2 - t1 > 20 mm.

[0040] Figure 3i Shown is a schematic structural diagram of a butt plate rack where the welding method is submerged arc automatic welding, the groove type is X-shaped and the plate thickness difference is on the side of the smaller angle of the X-shaped groove, and the plate thickness difference 3 mm < t2 - t1 ≤ 20 mm.

[0041] Figure 4a Shown is a schematic structural diagram of a butt plate rack where the welding method is carbon dioxide gas welding or hybrid welding, the groove type is V-shaped and on the same side as the plate thickness difference, and if the groove angle α < 45°.

[0042] Figure 4b It shows a schematic structural diagram of a butt plate rack when the welding method is carbon dioxide gas welding or hybrid welding, the groove type is V-shaped and on the same side as the plate thickness difference, and if the groove angle α≥45°.

[0043] Figure 4c It shows a schematic structural diagram of a butt plate rack when the welding method is carbon dioxide gas welding or hybrid welding, the groove type is V-shaped and on different sides of the plate thickness difference.

[0044] Figure 4d It shows a schematic structural diagram of a butt plate rack when the welding method is carbon dioxide gas welding, the groove type is X-shaped and the plate thickness difference is on the side of the larger angle of the X-shaped groove, and if the plate thickness difference t2 - t1>20 mm.

[0045] Figure 4e It shows a schematic structural diagram of a butt plate rack when the welding method is carbon dioxide gas welding, the groove type is X-shaped and the plate thickness difference is on the side of the larger angle of the X-shaped groove, and if the plate thickness difference 3 mm < t2 - t1≤20 mm.

[0046] Figure 4f It shows a schematic structural diagram of a butt plate rack when the welding method is carbon dioxide gas welding, the groove type is X-shaped and the plate thickness difference is on the side of the smaller angle of the X-shaped groove, and if the plate thickness difference t2 - t1>20 mm.

[0047] Figure 4g It shows a schematic structural diagram of a butt plate rack when the welding method is carbon dioxide gas welding, the groove type is X-shaped and the plate thickness difference is on the side of the smaller angle of the X-shaped groove, and if the plate thickness difference 3 mm < t2 - t1≤20 mm.

[0048] Figure 5a It shows a schematic structural diagram of a butt plate rack when the welding method is FCB welding, the groove type is Y-shaped and the groove is on the same side as the plate thickness difference.

[0049] Figure 5b It shows a schematic structural diagram of a butt plate rack when the welding method is FCB welding, the groove type is Y-shaped and the groove is on different sides of the plate thickness difference.

[0050] Figure 6 It shows a flowchart of the ship transition slope design provided in the second embodiment of the present application.

[0051] Reference numerals: 10, data acquisition and analysis module; 20, rule management database; 21, discrimination rule library; 22, design rule library; 30, discrimination module; 40, parameter design module; 50, model modification module. Detailed implementation manners

[0052] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0053] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Although the illustrations only show components related to the present invention and are not drawn according to the actual number, shape and size of the components, the shape, quantity, positional relationship and proportion of each component can be arbitrarily changed under the premise of realizing the technical solution of this invention, and the layout of the components may also be more complex.

[0054] Example 1

[0055] This embodiment provides a ship transition skew design system, such as Figure 1 The diagram shows the composition of the ship transition slope design system in this embodiment. It includes a data acquisition and parsing module 10, a rule management database 20, a discrimination module 30, and a parameter design module 40. The data acquisition and parsing module 10 acquires the ship's three-dimensional design model and automatically extracts the geometric information of the plate material and the process attribute information of the docking boundary based on the ship's three-dimensional design model. The rule management database 20 stores transition slope discrimination rules and design rules. The discrimination module 30 is connected to the data acquisition and parsing module 10 and the rule management database 20. Based on the discrimination rules, the discrimination module determines the target docking boundary where a transition slope needs to be created. The parameter design module 40, for each target docking plate boundary, matches the design rules in the design rule library based on the process attribute information of the docking boundary and automatically calculates and generates the corresponding transition slope geometric parameters. The model modification module 50 modifies the ship's three-dimensional design model based on the transition slope geometric parameters to generate a ship three-dimensional design model containing the transition slope.

[0056] Specifically, the data acquisition and parsing module 10 interfaces with the ship 3D design software to acquire the ship's 3D design model. It then identifies the geometric information of all plate materials in the model and the process attribute information of the joint boundaries between plate materials. Specifically, the geometric information includes, but is not limited to, plate identification, spatial coordinates, and plate thickness (t). The module analyzes the joint relationships between plate materials, determines the location of the joint boundaries, and calculates the thickness difference Δt between adjacent plate materials at the joint boundary. Figure 2 The diagram shown is a schematic of a docking plate frame provided in this embodiment; Figure 2As shown, the mating plate frame includes two mating plates. The thickness of the thinner mating plate is t1, and the thickness of the thicker mating plate is t2. Then the thickness difference between the adjacent plates at the mating interface is Δt=|t1-t2|.

[0057] Specifically, process attribute information includes: the welding method used at the butt joint boundary, the groove type, the groove angle, and the correspondence between the groove and the plate thickness difference direction. Generally, welding methods include: submerged arc welding (SAW), gas carbon dioxide welding (CO2), and FCB welding. Groove types include: I-type (with only a gap), V-type, Y-type, X-type, and double V-type, etc. Figure 2 As shown, the bevel type at the mating boundary of the connecting plate frame is X-shaped. Bevels are typically created on the mating boundary and involve the machining of the plates on both sides of the mating boundary. Bevel geometric parameters include: bevel angle (α°, θ°), bevel root (yy), and bevel height (zz, ww). Based on the correspondence between the bevel and the plate thickness difference direction, the relative position of the transition slope and the bevel is determined: for single-sided bevels such as V-shaped bevels, it is determined whether the side where the transition slope is located is the same as the side where the bevel is located; for double-sided bevels such as X-shaped bevels, it is determined whether the transition slope is located on the α° bevel side or the θ° bevel side. For example... Figure 2 As shown, at this docking boundary, the transition slope and the α° bevel are located on the same side.

[0058] The rule management database 20 comprises two parts: a discrimination rule base 21 and a design rule base 22. The discrimination rule base 21 stores the conditions for determining whether a transition slope is required at the joint boundary of a plate. Specifically, the discrimination rules include at least the following: for any joint boundary, if the thickness difference between the plates on both sides is greater than or equal to a set threshold, then the joint boundary is determined to require a transition slope. The set threshold is configured according to the material of different plates, their location within the ship, shipyard standards, or ship type characteristics; generally, the set threshold is between 3 mm and 5 mm. Specifically, the set thresholds are 3 mm, 4 mm, and 5 mm.

[0059] Design rule base 22 stores design rules for calculating transition slope, specifically including calculation formulas or empirical values ​​for calculating the transition slope length based on the geometric information and the process attribute information. Generally, the formula for calculating the transition slope length is: L=k1*Δt+k2*h, where L is the transition slope length, Δt is the thickness difference between the plates on both sides of the butt joint boundary, h is the relevant bevel height, and k1 and k2 are coefficients determined based on the welding method, bevel type, and the relative positional relationship between the bevel and the plate thickness difference.

[0060] Specifically, the determining parameters of k1 and k2 include: welding method (SAW, CO2, FCB); groove type (type I, V, Y, X); range of plate thickness difference (Δt) (Δt > 20 mm, 3 mm < Δt ≤ 20 mm); range of groove angle (α < 45°, α ≥ 45°); relative position of groove and plate thickness difference (same side, opposite side); side of the groove where the plate thickness difference is located (for X-type groove, divided into the larger angle side and the smaller angle side).

[0061] Next, this embodiment will list one by one the design rules of the transition slope under different conditions: as Figure 3a shown, it is a schematic structural diagram of a butt plate girder when the welding method is submerged arc automatic welding and the groove type is an empty groove only; as Figure 3a shown, when the welding method is submerged arc automatic welding and the groove type is an empty groove only, the height of this transition slope is aa = (t2 - t1), and the length of the transition slope is L11 = 4 * (t2 - t1); as Figure 3b shown, it is a schematic structural diagram of a butt plate girder when the welding method is submerged arc automatic welding and the groove type is Y-type and the groove and the plate thickness difference are on different sides; the height of this transition slope is aa = (t2 - t1), and the length of the transition slope is L12 = 4 * (t2 - t1); as Figure 3c shown, it is a schematic structural diagram of a butt plate girder when the welding method is submerged arc automatic welding and the groove type is Y-type and the groove and the plate thickness difference are on the same side; the height of this transition slope is aa = (t2 - t1), and the length of the transition slope is L13 = 4 * (t2 - t1) + 0.4 * t1; as Figure 3d shown, it is a schematic structural diagram of a butt plate girder when the welding method is submerged arc automatic welding, the groove type is X-type, the plate thickness difference is on the larger angle side of the X-type groove, and if the larger angle α < 45° and the plate thickness difference t2 - t1 > 20 mm; then the height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L14 = 3 * (t2 - t1) + 0.4 * zz; as Figure 3e shown, it is a schematic structural diagram of a butt plate girder when the welding method is submerged arc automatic welding, the groove type is X-type, the plate thickness difference is on the larger angle side of the X-type groove, and if the larger angle α < 45° and the plate thickness difference 3 mm < t2 - t1 ≤ 20 mm; the height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L15 = 4 * (t2 - t1) + 0.4 * zz; as Figure 3f shown, it is a schematic structural diagram of a butt plate girder when the welding method is submerged arc automatic welding, the groove type is X-type, the plate thickness difference is on the larger angle side of the X-type groove, the larger angle α ≥ 45°, and the plate thickness difference t2 - t1 > 20 mm; the height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L16 = 3 * (t2 - t1) + zz; as Figure 3gAs shown, it is a schematic structural diagram of a butt plate rack when the welding method is automatic submerged arc welding, the groove type is X-shaped, the plate thickness difference is on the side with a larger angle of the X-shaped groove, the larger angle θ≥45°, and 3 mm < t2 - t1 ≤ 20 mm. The height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L17 = 4*(t2 - t1) + zz; As Figure 3h shown, it is a schematic structural diagram of a butt plate rack when the welding method is automatic submerged arc welding, the groove type is X-shaped and the plate thickness difference is on the side with a smaller angle of the X-shaped groove, and the plate thickness difference t2 - t1 > 20 mm. The height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L18 = 3*(t2 - t1) + 0.4*ww; As Figure 3i shown, it is a schematic structural diagram of a butt plate rack when the welding method is automatic submerged arc welding, the groove type is X-shaped and the plate thickness difference is on the side with a smaller angle of the X-shaped groove, and 3 mm < t2 - t1 ≤ 20 mm. The height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L19 = 4*(t2 - t1) + 0.4*ww.

[0062] As Figure 4a shown, it is a schematic structural diagram of a butt plate rack when the welding method is CO2 gas welding or hybrid welding, the groove type is V-shaped and on the same side as the plate thickness difference, and if the groove angle α < 45°. Then the height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L21 = 4*(t2 - t1) + 0.4*t1; As Figure 4b shown, it is a schematic structural diagram of a butt plate rack when the welding method is CO2 gas welding or hybrid welding, the groove type is V-shaped and on the same side as the plate thickness difference, and if the groove angle α≥45°. Then the height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L22 = 4*(t2 - t1) + t1; As Figure 4c shown, it is a schematic structural diagram of a butt plate rack when the welding method is CO2 gas welding or hybrid welding, the groove type is V-shaped and on different sides of the plate thickness difference. The height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L23 = 4*(t2 - t1); As Figure 4d shown, it is a schematic structural diagram of a butt plate rack when the welding method is CO2 gas welding, the groove type is X-shaped and the plate thickness difference is on the side with a larger angle of the X-shaped groove, and if the plate thickness difference t2 - t1 > 20 mm. Then the height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L24 = 3*(t2 - t1) + 0.4*zz; As Figure 4eAs shown, it shows a structural schematic diagram of a butt plate rack when the welding method is CO₂ gas welding, the groove type is X-type, and the plate thickness difference is on the side with a larger angle of the X-type groove. If the plate thickness difference is 3 mm < t2 - t1 ≤ 20 mm, the height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L25 = 4*(t2 - t1) + 0.4*zz; as Figure 4f As shown, it shows a structural schematic diagram of a butt plate rack when the welding method is CO₂ gas welding, the groove type is X-type, and the plate thickness difference is on the side with a smaller angle of the X-type groove. If the plate thickness difference t2 - t1 > 2 mm, the height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L26 = 3*(t2 - t1) + 0.4*ww; as Figure 4g As shown, it shows a structural schematic diagram of a butt plate rack when the welding method is CO₂ gas welding, the groove type is X-type, and the plate thickness difference is on the side with a smaller angle of the X-type groove. If the plate thickness difference is 3 mm < t2 - t1 ≤ 20 mm, the height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L27 = 4*(t2 - t1) + 0.4*ww.

[0063] As Figure 5a As shown, it shows a structural schematic diagram of a butt plate rack when the welding method is FCB welding, the groove type is Y-type, and the groove is on the same side as the plate thickness difference. The height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L31 = 8*(t2 - t1) + 0.4*t1; as Figure 5b As shown, it shows a structural schematic diagram of a butt plate rack when the welding method is FCB welding, the groove type is Y-type, and the groove is on the different side from the plate thickness difference. The height of the transition slope is aa = (t2 - t1), and the length of the transition slope is L32 = 8*(t2 - t1).

[0064] Systematically encode the above discrete and complex empirical rules into the design rule library 22, convert the experience of designers and specification clauses into digital rules, ensure that all transition slope designs follow the same set of rules, eliminate human differences, and support batch automated design.

[0065] Optionally, the rule management database 20 has the ability to be continuously updated and expanded. Designers can modify, add, or optimize the thresholds in the discrimination rules, the calculation formulas and their coefficients in the design rule library according to conditions such as the latest industry specifications, special requirements of specific ship types, applications of new materials and new processes, or feedback experience from actual construction through the management interface or data import interface of the rule management database 20.

[0066] The discrimination module 30 is connected to the data acquisition and parsing module 10 and the rule management database 20. According to the discrimination rules in the rule management database 20, for each docking boundary, its plate thickness difference Δt is read, the discrimination rule library 21 is called, the plate thickness difference is compared with the set threshold, and it is determined whether the docking boundary needs to be opened with a transition slope.

[0067] Specifically, the discrimination module 30 receives geometric information of the plate and process attribute information of the mating boundary extracted from the data acquisition and parsing module 10. The system automatically traverses each mating boundary and reads the plate thickness difference Δt for each boundary. It then calls the discrimination rule library in the rule management database 20 and automatically compares the plate thickness difference Δt of each boundary with a preset threshold in the library. This threshold can be configured according to different classification society specifications or internal design standards. Specifically, based on the comparison result, the module automatically performs a logical judgment: if Δt ≥ the threshold, the boundary is marked as an item requiring processing. Finally, the module outputs a list of target mating boundaries. This list records the unique identifier (such as boundary ID), location index, and corresponding plate thickness difference for each boundary requiring a transition slope, providing clear input objects for subsequent design.

[0068] The parameter design module 40, for each target docking boundary, matches the design rules in the design rule library according to the process attribute information of the docking boundary, and automatically calculates and generates the corresponding transition slope geometry parameters.

[0069] Specifically, the target docking boundary list output by the discrimination module 30 is received. For each boundary in the list, the parameter design module 40 obtains its complete process attribute information (welding method, bevel type, etc.). The process attribute information is used as a combined query condition and matched in the design rule base 22 to find the unique applicable design calculation formula. The specific geometric parameters (such as t1, t2) and process information (α°, θ°, zz, ww, etc.) of the boundary are automatically substituted into the matched formula to calculate the accurate transition slope length (L) and transition slope height (i.e., plate thickness difference aa). The module performs the above steps for all boundaries in the list to achieve efficient batch calculation. Finally, it generates a detailed transition slope design parameter table, which records each target boundary identifier and its corresponding calculated and verified key geometric parameters such as transition slope length (L) and height (aa).

[0070] The model modification module 50 modifies the ship's three-dimensional design model according to the transition slope geometric parameters to generate a ship's three-dimensional design model that includes the transition slope.

[0071] Specifically, the model modification module 50 reads the transition slope design parameter table output by the parameter design module 40. By calling the application programming interface (API) of the 3D design software or directly driving the internal geometry engine, it finds the corresponding plate and boundary in the original ship 3D design model. Based on the calculated transition slope length (L) and height (aa), it programmatically performs a cutting operation on the thicker plate at the target boundary to generate a continuous transition slope that conforms to the design rules.

[0072] After all modification instructions have been executed, the module performs a comprehensive update and consistency check on the 3D model. Finally, it outputs an updated model containing all automatically generated transition slope structures.

[0073] The ship transition tilt design system provided in this embodiment changes the traditional design mode that relies on designers manually consulting manuals and calculating and comparing one by one. The system automatically analyzes and processes the 3D model in batches, and can generate the transition tilt parameters of all docking boundaries of the ship in a short time, which greatly improves design efficiency. The system has built-in discrimination rule base and design rule base to eliminate errors caused by human negligence, experience differences or calculation errors, thereby improving construction quality.

[0074] Example 2

[0075] This embodiment also provides a method for designing ship transition slopes, such as... Figure 6 The diagram shows a flowchart of the ship transition slope design method in this embodiment. The ship transition slope design method provided in this embodiment includes: S1: designing the discrimination principle and design rules for the transition slope, and saving the discrimination principle and design rules to the rule management database; S2: automatically acquiring the geometric information and process attribute information of all plate mating edges based on the ship's three-dimensional design model; S3: automatically selecting the target mating plate frame boundary that needs to have a transition slope from all mating plate frame boundaries according to the discrimination principle; S4: matching the corresponding design rules according to the process attribute information of the target mating plate frame boundary, and automatically calculating the transition slope geometric parameters of the target mating plate frame boundary; S5: geometrically modifying the three-dimensional design model according to the transition slope geometric parameters.

[0076] Specifically, step S1 includes establishing discrimination principles and design rules. Specifically, establishing discrimination principles involves clarifying the criteria for setting a transition slope based on ship design specifications and welding process requirements. Generally, the discrimination rule is: when the thickness difference Δt between the plates on both sides of the butt joint boundary is greater than or equal to a set threshold, a transition slope is required. Generally, the set threshold can be configured according to specifications, typically 3 mm, 4 mm, or 5 mm. Specifically, establishing design rules involves systematically organizing the calculation formulas for the transition slope length under different welding scenarios. This includes: classifying welding methods (e.g., submerged arc welding, CO2 gas shielded welding, FCB welding); classifying bevel types (e.g., I-type, V-type, Y-type, X-type); defining the relative positional relationship between the bevel and the plate thickness difference (same side or opposite side); and, for different combinations of the above factors, combining parameters such as the plate thickness difference range and bevel angle, formulating corresponding transition slope length calculation formulas. Optionally, these calculation formulas are derived from industry standards and engineering experience. The above discrimination rules and design rules are saved to the system's rule management database, completing the construction of the rule management database in Example 1.

[0077] Specifically, step S2: 3D model information extraction. Based on the ship's 3D design model, the system analyzes the model structure and extracts geometric and process attribute information. 3D design software includes, but is not limited to, Tribon and CATIA. Geometric information includes: the identifier, thickness, and location of each plate, and automatically calculates the thickness difference Δt between the two sides of each mating boundary between plates. Process attribute information includes: automatically obtaining the welding method, bevel type, bevel geometric parameters (angle, height, etc.), and the relative position of the bevel and the thickness difference between each mating boundary from the database or attributes associated with the model.

[0078] Specifically, in step S3: the system automatically analyzes all docking plate boundaries obtained in S2 based on the discrimination rules established in S1: it iterates through each docking boundary and reads its plate thickness difference Δt; it compares Δt with the set threshold in the discrimination rules, automatically filters out all boundaries that meet the condition (Δt ≥ threshold), and generates a list of target docking boundaries. This list clarifies all the objects that need to be processed.

[0079] Specifically, step S4: Calculation of transition slope parameters: For each target butt joint boundary in the list generated in S3: the system obtains complete process attribute information (welding method, groove type, groove angle, relative position, etc.) based on the unique identifier of the boundary; using these process attributes as combined query conditions, it performs intelligent matching in the design rule base constructed in S1 to locate the uniquely applicable calculation formula; it automatically substitutes the specific geometric parameters (including: t1, t2) and process information (α°, θ°, zz, ww, etc.) of the boundary into the matched formula to calculate the precise transition slope length (L). The transition slope height (aa) is the plate thickness difference Δt. Finally, a design parameter table containing all target boundaries and their corresponding transition slope parameters is output.

[0080] Specifically, step S5: Automatic modification and update of the 3D model: Based on the design parameter table calculated in S4, the system drives the 3D design environment to complete the final design. For each record in the parameter table, the system locates the corresponding plate and boundary in the original ship 3D design model by calling the API of the 3D software. Based on the calculated length (L) and height (aa), the system automatically performs geometric beveling on the thicker plate side to accurately generate a transition slope.

[0081] The final output is an updated version of the ship's 3D design model that integrates all automatically generated transition structures and can be directly used for subsequent production, realizing a fully automated conversion from design rules to 3D entities.

[0082] The method described in this embodiment, through steps S1 to S5, realizes the standardization, automation, and intelligence of ship transition angle design, transforming the traditional cumbersome and error-prone manual design process into an efficient, accurate, and consistent automatic processing flow, significantly improving design efficiency and quality.

[0083] Example 3

[0084] This embodiment provides an electronic device, including a memory and a processor; the memory stores a computer program; the processor is communicatively connected to the memory, and when executing the computer program, it implements the ship transition slope design method described in Embodiment 2.

[0085] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A ship transition skew design system, characterized in that, include: The data acquisition and analysis module acquires the ship's three-dimensional design model and automatically extracts the geometric information of the plates and the process attribute information of the docking boundary from the ship's three-dimensional design model; The rule management database stores transition slope discrimination rules and a design rule library; The discrimination module is connected to the data acquisition and parsing module and the rule management database. The discrimination module determines the target docking boundary that needs to be opened with a transition slope according to the discrimination rules. The parameter design module, for each target docking boundary, matches the design rules in the design rule library according to the process attribute information of the docking boundary, and automatically calculates and generates the corresponding transition slope geometry parameters. The model update module modifies the ship's three-dimensional design model according to the transition slope geometric parameters to generate a ship's three-dimensional design model that includes the transition slope.

2. The ship transition skew design system according to claim 1, characterized in that, The geometric information includes: spatial coordinates and plate thickness.

3. The ship transition skew design system according to claim 2, characterized in that, The data acquisition and analysis module further includes: calculating the thickness difference Δt between adjacent plates at the docking boundary based on the geometric information of the plate, where Δt = |t1 - t2|.

4. The ship transition skew design system according to claim 2, characterized in that, The process attribute information includes: the welding method, bevel type, bevel angle, and correspondence between the bevel and the plate thickness difference direction used at the docking boundary.

5. The ship transition skew design system according to claim 1, characterized in that, The discrimination rule includes at least the following: for any mating boundary, if the thickness difference between the plates on both sides is greater than or equal to a set threshold, then it is determined that the mating boundary needs to be opened with a transition slope.

6. The ship transition skew design system according to claim 5, characterized in that, The set threshold is between 3 mm and 5 mm.

7. The ship transition skew design system according to claim 4, characterized in that, The design rules include a calculation formula for calculating the transition slope length based on the geometric information and the process attribute information.

8. The ship transition skew design system according to claim 7, characterized in that, The formula for calculating the transition slope length is: L=k1*Δt+k2*h, where L is the transition slope length, Δt is the thickness difference between the plates on both sides of the butt joint boundary, h is the relevant bevel height, and k1 and k2 are coefficients determined according to the welding method, bevel type, and the relative positional relationship between the bevel and the plate thickness difference.

9. A method for designing a ship's transition slope, characterized in that, The ship transition skewing design system according to any one of claims 1-6 is used to design the transition skewing of the ship's plate. Includes the following steps: S1: Establish the discrimination principle and design rules for the transition slope, and save the discrimination principle and design rules to the rule management database; S2: Based on the ship's three-dimensional design model, automatically acquire the geometric and process attribute information of all plate joint edges; S3: Based on the discrimination principle, automatically select the target docking plate frame boundary that needs to have a transition slope from all docking plate frame boundaries; S4: Based on the process attribute information of the target docking plate frame boundary, match the corresponding design rules and automatically calculate the transition slope geometry parameters of the target docking plate frame boundary; S5: Based on the transition slope geometric parameters, the three-dimensional design model is geometrically modified.

10. An electronic device, characterized in that, The electronic device includes: Memory, which stores computer programs; The processor, which is communicatively connected to the memory, implements the ship transition slope design method according to any one of claims 8 to 9 when executing the computer program.

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