Ship rib plate design method

Abstract

The invention provides a ship rib plate design method which comprises the following steps that a rib plate database is established, and the rib plate database comprises two-dimensional structure diagrams of multiple rib plates; selecting a two-dimensional structure diagram of the rib plate to be designed from the rib plate database; on the basis of the two-dimensional structure diagram of the to-be-designed rib plate, inputting related structure parameters of the to-be-designed rib plate; the related structure parameters comprise boundary control parameters, trepanning control parameters, rib plate thickness and rib plate orientation; and generating a three-dimensional model of the to-be-designed rib plate according to the related structure parameters of the to-be-designed rib plate. According to the ship rib plate design method, related structure parameters of a rib plate to be designed are input by calling a two-dimensional structure diagram of the rib plate in a rib plate database; the related structure parameters comprise boundary control parameters, trepanning control parameters, rib plate thickness and rib plate orientation; the three-dimensional model of the to-be-designed rib plate can be obtained, so that the design progress of the ship rib plate is accelerated, and the modeling efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the field of ship design and manufacturing, and in particular, relates to a ship rib design method. Background Art

[0002] At present, in the production and design process of various types of ships, there are many forms of ribs, and similar forms have different sizes. When performing 3D software modeling, ribs usually require designers to manually establish all boundaries, and similar forms of ribs cannot be simply copied and modeled due to size deviations. Therefore, when designing multiple ribs of different sizes, designers need to model each rib, which slows down the design process. Summary of the invention

[0003] One of the purposes of this application is to provide a ship rib design method that can speed up the design progress of ship ribs and improve modeling efficiency.

[0004] To achieve the above-mentioned and other related purposes, the present application provides a ship rib design method, comprising the following steps:

[0005] Establishing a rib database, wherein the rib database includes two-dimensional structural diagrams of various ribs;

[0006] Selecting a two-dimensional structural diagram of a rib to be designed from the rib database;

[0007] Based on the two-dimensional structural diagram of the rib to be designed, inputting relevant structural parameters of the rib to be designed; the relevant structural parameters include boundary control parameters, opening control parameters, rib thickness and rib orientation;

[0008] Generating a three-dimensional model of the rib plate to be designed according to relevant structural parameters of the rib plate to be designed;

[0009] Among them, the boundary control parameters are used to determine the boundary position of the rib in the three-dimensional model, the opening control parameters are used to determine the position, shape and size of the openings of the rib in the three-dimensional model, the rib thickness is used to determine the thickness of the rib in the three-dimensional model, and the rib orientation is used to determine the orientation of the rib in the three-dimensional model.

[0010] This application has at least the following beneficial effects:

[0011] The ship rib design method of the present application is adopted, by calling the two-dimensional structure diagram of the rib in the rib database, inputting the relevant structural parameters of the rib to be designed; the relevant structural parameters include boundary control parameters, opening control parameters, rib thickness and rib orientation; the three-dimensional model of the rib to be designed can be obtained, thereby accelerating the design progress of the ship rib and improving the modeling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings to be designed and used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1-Figure 7 It is a two-dimensional structural diagram of various ribs according to the embodiments of the present application;

[0014] Figure 8-Figure 14 It is a two-dimensional structural diagram of various ribs according to the embodiments of the present application, and the two-dimensional structural diagram is marked with relevant structural parameters.

[0015] Fig.15 Based on Fig.11 The two-dimensional structural diagram of the rib plate is marked with the specific values ​​of the relevant structural parameters.

[0016] Reference numerals:

[0017] H1, H2, H3, H4, H5 are respectively one of the following: the distance between the edge of the opening and the adjacent rib boundary; the distance between the two edges on the opposite sides of the opening; when there are multiple openings, the distance between different openings; when a straight edge of the opening coincides with one of the rib boundaries, the distance between the two end points of the straight edge and the adjacent rib boundaries;

[0018] R1, R2, R3, R4, R5, R6, R7 and R8 are the radii of the arcs;

[0019] S1, S2, S3, and S4 are the widths of the reinforcing ribs corresponding to different sides of the hole;

[0020] Limit-1, limit-2, ..., limit-4 are different boundaries corresponding to the ribs. DETAILED DESCRIPTION

[0021] The following describes the implementation methods of the present application through specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, and the details in the present application can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be considered as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0023] In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more than two. For example, multiple processing units refer to two or more processing units, etc., and multiple elements refer to two or more elements, etc.

[0024] This embodiment provides a ship rib design method, comprising the following steps:

[0025] Establish a rib database, which includes two-dimensional structural diagrams of various ribs;

[0026] Select the two-dimensional structural drawing of the rib to be designed from the rib database;

[0027] Based on the two-dimensional structural diagram of the rib to be designed, input relevant structural parameters of the rib to be designed; the relevant structural parameters include boundary control parameters, opening control parameters, rib thickness and rib orientation;

[0028] Generate a three-dimensional model of the rib plate to be designed according to relevant structural parameters of the rib plate to be designed;

[0029] Among them, the boundary control parameters are used to determine the boundary position of the rib in the three-dimensional model, the opening control parameters are used to determine the position, shape and size of the openings of the rib in the three-dimensional model, the rib thickness is used to determine the thickness of the rib in the three-dimensional model, and the rib orientation is used to determine the orientation of the rib in the three-dimensional model.

[0030] The ship rib design method of the present application is adopted, by calling the two-dimensional structure diagram of the rib in the rib database, inputting the relevant structural parameters of the rib to be designed; the relevant structural parameters include boundary control parameters, opening control parameters, rib thickness and rib orientation; the three-dimensional model of the rib to be designed can be obtained, thereby accelerating the design progress of the ship rib and improving the modeling efficiency.

[0031] In some embodiments of the present application, the rib database includes: Figures 1 to 7 The 2D structural diagrams of various common ribs described in . There are many forms of 2D structural diagrams of ribs. For example, according to the number of edges, they can be divided into ribs with 4 edges (such as Figures 1 to 6 ) and a rib with five edges (as shown Figure 7 According to whether there are reinforcing ribs, it can be divided into ribs with reinforcing ribs (such as Figures 3 to 6) and ribs without stiffeners (as shown Figure 1 , Figure 2 and Figure 7 According to the number of openings, it can be divided into ribs with 1 hole (such as Figures 1 to 4 , Figure 6 , Figure 7 ) and a rib plate with two holes (as shown Figure 5 shown); etc.

[0032] In some embodiments of the present application, in the step of establishing a rib database, the ribs can be numbered according to the number of edges in the two-dimensional structure diagram. For example, the rib numbered L4 means that the number of rib boundaries is 4, and the rib numbered L5 means that the number of rib boundaries is 5.

[0033] The following specifically introduces the relevant structural parameters of the rib to be designed, including boundary control parameters, opening control parameters, rib thickness and rib orientation.

[0034] The boundary control parameters include the transverse position of the rib to be designed in the hull. The rib is a transverse strong member or frame structure connected to the rib position in the hull frame. When the rib is located on the hull frame plane, the hull frame plane can be used to represent the transverse position of the hull where the rib is located. For example, the transverse position of the hull where the rib is located is FR50, which means that the rib is located on the 50th hull frame plane.

[0035] The boundary control parameters include the boundary position of the rib to be designed. The boundary position of the rib to be designed is determined by the contact position between the rib to be designed and the hull structure. Figures 8 to 14 The contact position includes a first boundary limit-1, a second boundary limit-2, ..., and a fifth boundary limit-5. In the three-dimensional model, the contact position corresponds to the contact surface between the rib to be designed and the hull structure.

[0036] The opening control parameters are used to determine the position, shape and size of the opening of the rib plate in the three-dimensional model. The opening includes at least two edges and arc lines connecting adjacent edges.

[0037] In some embodiments, the hole control parameters include the distance between the edge of the hole and the adjacent rib boundary and the distance between two straight edges on opposite sides of the hole. When the rib has more than two holes, the hole control parameters also include the distance between different holes. When a straight edge of the hole coincides with one of the rib boundaries, the hole control parameters also include the distance between the two end points of the straight edge and the adjacent rib boundaries.

[0038] The following drawings are used to specifically introduce the opening control parameters of different structural ribs.

[0039] Reference Figure 8 In the rib shown, the opening is located inside the rib, and the opening includes three straight sides. The distance between each straight side and the adjacent rib boundary is represented by H1, H2, and H3 respectively.

[0040] Reference Fig. 9 In the rib shown, the opening is located inside the rib, and the opening includes two sides. The distance between each side and the adjacent rib boundary is represented by H1 and H2 respectively.

[0041] Reference Fig.10 In the rib shown, a straight side of the opening coincides with one of the rib boundaries, the distances between the other straight sides of the opening and the adjacent rib boundaries are represented by H1, H2, and H3, respectively, and the distances between the two end points of the straight side of the opening coincident with the rib boundary and the adjacent rib boundaries are represented by H4 and H5, respectively.

[0042] Reference Fig.11 In the rib shown, the opening is located inside the rib, and the distance between each straight side of the opening and the adjacent rib boundary is represented by H1, H2, H3, and H4 respectively.

[0043] Reference Fig.12 The rib plate shown includes two openings, the distances between the left and right straight sides of the openings and the adjacent rib plate boundaries are represented by H1 and H2 respectively, the distance between the upper and lower straight sides of the openings are represented by H3 and H5 respectively, and the distance between the two openings is represented by H4.

[0044] Reference Fig.13 In the rib shown, the opening is located inside the rib, the distances between two straight sides of the opening and the adjacent rib boundaries are represented by H1 and H3 respectively, the distance between the upper and lower straight sides of the opening is represented by H2 respectively, and the distance between the left and right straight sides of the opening is represented by H4 respectively.

[0045] Reference Fig.14 In the rib shown, the opening is located inside the rib, and the distances between three straight sides of the opening and adjacent rib boundaries are represented by H1, H3, and H4 respectively, and the distance between the upper and lower straight sides of the opening is represented by H2.

[0046] The adjacent sides of the opening are connected by arc lines, and the opening control parameters also include the size parameters of the arc lines. The size parameters of the arc lines include the radius of the arc lines.

[0047] The following is a detailed introduction to the dimensional parameters of the arc line through the attached drawings.

[0048] Reference Figure 8 The opening includes three arc lines connecting adjacent straight edges, and the radius of each arc line is represented by R1, R2, and R3 respectively.

[0049] Reference Fig. 9 The opening includes two arc lines connecting adjacent edges, and the radius of each arc line is represented by R1 and R2 respectively.

[0050] Reference Fig.10 The opening includes two arc lines connecting adjacent straight edges, and the radius of each arc line is represented by R2 and R3 respectively. The opening is connected to the rib boundary, refer to Fig.10 The straight side of the opening is connected to the boundary of the rib plate by two arc lines, represented by R1 and R4 respectively.

[0051] Reference Fig.11 The opening includes four arc lines connecting adjacent straight edges, and the radius of each arc line is represented by R1, R2, R3, and R4 respectively.

[0052] Reference Fig.12 There are two openings, each of which includes four arc lines connecting adjacent straight edges, attacking 8 arc lines, and the radius of each arc line is represented by R1, R2, R3, R4, R5, R6, R7 and R8 respectively.

[0053] In some embodiments, the ribs may be provided with reinforcing ribs or other forms of reinforcement near the openings. The relevant structural parameters of the ribs include reinforcing rib positioning parameters. The reinforcing rib positioning parameters are used to determine the size and position of the reinforcing ribs of the ribs in the three-dimensional model. The position of the reinforcing ribs in the three-dimensional model includes a positioning plane for installing the reinforcing ribs. The following specifically introduces the reinforcing rib positioning parameters of ribs with different structures through the accompanying drawings.

[0054] Reference Figure 8 , Fig. 9 and Fig.14 , no reinforcement ribs are set near the opening of the rib plate, and there are no reinforcement rib positioning parameters at this time.

[0055] Reference Fig.10 , the ribs are provided with reinforcing ribs around the openings, and the widths of the reinforcing ribs corresponding to the different straight sides of the holes are represented by S1, S2, and S3 respectively. At this time, the adjacent straight sides of the holes are connected by the arc lines of the reinforcing ribs, and the radius of each arc line is represented by R2 and R3 respectively. The opening is connected to the boundary of the ribs, refer to Fig.10 , arc lines are provided at the positions where the reinforcing ribs are connected to the opening and the rib plate boundary, which are represented by R1 and R4 respectively.

[0056] Reference Fig.11 , reinforcing ribs are arranged around the openings, and the widths of the reinforcing ribs corresponding to different straight sides of the holes are represented by S1, S2, S3, and S4 respectively.

[0057] Reference Fig.12There are two openings on the rib plate. The rib plate is provided with reinforcing ribs around the upper opening. The widths of the reinforcing ribs corresponding to the different straight sides of the hole are represented by S2, S3, and S4 respectively. The rib plate is provided with reinforcing ribs around the lower opening. The widths of the reinforcing ribs corresponding to the different straight sides of the hole are represented by S3, S1, and S4 respectively.

[0058] Reference Fig.13 , reinforcing ribs are arranged around the openings, and the widths of the reinforcing ribs corresponding to different straight sides of the holes are represented by S1, S2, and S3 respectively.

[0059] In the step of determining the relevant structural parameters of the rib to be designed, the rib database includes the rib plate specifications, and the thickness of the rib to be designed is determined by the rib plate specifications in the rib database. The plate specifications include the plate material.

[0060] In the step of generating the three-dimensional model of the rib, the orientation of the rib to be designed is determined to be bow-facing or stern-facing according to the theoretical line diagram.

[0061] It should be noted that the rib database is not limited to the above Figures 1 to 7 The two-dimensional structural diagram of the rib mentioned, the related structural parameters of the rib are not limited to the boundary control parameters, opening control parameters, rib thickness and rib orientation parameters mentioned above. Specifically, the boundary control parameters are not limited to the lateral position of the rib to be designed on the hull and the boundary position of the rib to be designed. The opening control parameters are not limited to the distance between the edge of the opening and the adjacent rib boundary and the distance between the two straight edges on the opposite sides of the opening, the size parameters of the arc line, and the rib positioning parameters are not limited to the width of the ribs corresponding to different straight edges of the hole. It also includes the two-dimensional structural diagram of the rib, the related structural parameters of the rib and the specific parameter types in the related structural parameters that can be thought of by technical personnel in this field.

[0062] The ship rib design method of the present application is illustrated below with reference to Example 1.

[0063] Embodiment 1

[0064] Select from rib database Figure 4 As a two-dimensional structural diagram of the rib to be designed.

[0065] Reference Fig.15 , determine the boundary control parameters of the rib to be designed, the boundary control parameters include the transverse position FR50 of the rib to be designed in the hull, FR50 means that the rib to be designed is located at the plane of the 50th rib of the hull.

[0066] The boundary control parameters also include the boundary position of the rib to be designed. The boundary position of the rib to be designed is determined by the contact position between the rib to be designed and the hull structure. Fig.11The contact position includes a first boundary limit-1, a second boundary limit-2, ..., and a fourth boundary limit-4.

[0067] Input the opening control parameters of the rib plate to be designed. The opening control parameters include the distance between each straight edge of the opening and the adjacent rib plate boundary. Fig.11 , represented by H1, H2, H3, and H4 respectively. Fig.15 , H1=500mm, H2=400mm, H3=500mm, H4=500mm.

[0068] Reference Fig.11 , the adjacent straight edges of the opening are connected by arc lines, and the opening control parameters also include the size parameters of the arc lines. The size parameters of the arc lines include the radius of the arc lines. Fig.11 , the opening consists of four arcs connecting adjacent straight edges, refer to Fig.11 , the radius of each arc is represented by R1, R2, R3, and R4 respectively. Fig.15 , R1=250mm, R2=250mm, R3=250mm, R4=250mm.

[0069] Reference Fig.11 , the ribs are provided around the openings, and the width of the ribs corresponding to the different straight sides of the holes is referred to Fig.11 , respectively represented by S1, S2, S3, and S4. Fig.15 , the values ​​of S1, S2, S3, and S4 are all 25mm.

[0070] The relevant structural parameters of the rib plate also include the rib plate thickness. The rib plate thickness is 10 mm and the material is grade A steel.

[0071] The relevant structural parameters of the rib also include the rib thickness direction, which is towards the stern.

[0072] According to the above relevant structural parameters of the rib plate to be designed, a three-dimensional model of the rib plate to be designed is generated.

[0073] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. A ship rib design method, characterized in that: The following steps are involved: Establishing a rib database, wherein the rib database includes two-dimensional structural diagrams of various ribs; Selecting a two-dimensional structural diagram of a rib to be designed from the rib database; Based on the two-dimensional structural diagram of the rib plate to be designed, inputting relevant structural parameters of the rib plate to be designed; The related structural parameters include boundary control parameters, opening control parameters, rib thickness and rib orientation; Generating a three-dimensional model of the rib plate to be designed according to relevant structural parameters of the rib plate to be designed; Among them, the boundary control parameters are used to determine the boundary position of the rib in the three-dimensional model, the opening control parameters are used to determine the position, shape and size of the openings of the rib in the three-dimensional model, the rib thickness is used to determine the thickness of the rib in the three-dimensional model, and the rib orientation is used to determine the orientation of the rib in the three-dimensional model.

2. The ship rib design method according to claim 1, characterized in that: The boundary control parameters include the transverse position of the rib to be designed on the hull and the boundary position of the rib to be designed.

3. The ship rib design method according to claim 2, characterized in that: The transverse position of the rib to be designed in the hull is represented by the hull rib plane.

4. The ship rib design method according to claim 2, characterized in that: The boundary position of the rib to be designed is determined by the contact position between the rib to be designed and the hull structure.

5. The ship rib design method according to claim 1, characterized in that: The opening includes at least two sides and an arc line connecting adjacent sides, and the opening control parameters include the distance between the straight side of the opening and the adjacent rib plate boundary and the distance between two straight sides on opposite sides of the opening.

6. The ship rib design method according to claim 5, characterized in that: When the rib plate to be designed has more than two openings, the opening control parameters also include distances between different openings.

7. The ship rib design method according to claim 5, characterized in that: The opening control parameters also include the size parameters of the arc line, and the size parameters of the arc line include the radius of the arc line.

8. The ship rib design method according to claim 1, characterized in that: The rib to be designed is provided with reinforcing ribs near the openings, and the relevant structural parameters of the rib include reinforcing rib positioning parameters, which are used to determine the size and position of the reinforcing ribs of the rib in the three-dimensional model.

9. The ship rib design method according to claim 1, characterized in that: The rib database includes rib plate specifications, and the thickness of the rib to be designed is determined by the plate specifications in the rib database.

10. The ship rib design method according to claim 1, characterized in that: The rib orientation to be designed is determined according to a theoretical line diagram.

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