A lightweight design method for ship structure model

Abstract

The present invention provides a lightweight design method for a ship structure model, and belongs to the technical field of ship design and construction. The present invention comprises the following steps: determining the organization mode of the structure lightweight model node; constructing the light model structure tree based on the heavy model structure tree; generating the light model node based on the heavy model lightweight node part information; opening the light model, the present invention effectively solves the related design scenario problems such as low opening and viewing efficiency caused by the large amount of model data, is conducive to the opening, viewing and other related operations of the model, greatly reduces the amount of data interaction with the design platform, and improves the design efficiency.

Description

Technical Field

[0001] The invention relates to a lightweight design method for a ship structure model, and belongs to the technical field of ship design and construction. Background Art

[0002] With the increasing application of digital design technology in ship design, its ship design model has gradually become larger and more complex. The geometric relationships and geometric features contained in the model are becoming more and more complex, and the amount of model data is increasing (hereinafter referred to as the heavy model; the heavy model product structure tree is referred to as the heavy model structure tree), resulting in an abnormally large amount of total model data used, causing slow model opening and operation jams, which is not conducive to design applications in complex scenarios. For this reason, if there is a lightweight model based on the heavy model, it is used to replace the heavy model in the design application process, so that it can minimize the non-geometric information in the design model and only retain the geometric topological relationship and necessary attributes of the model product structure (hereinafter referred to as the light model; the light model product structure tree is referred to as the light model structure tree), while not affecting the design and use of conventional application scenarios, the amount of model data is reduced, the model is easy to open and view, and then the internal and external communication based on the model in the design and construction becomes possible; it has high practicality in the entire ship design and construction process. As the background reference of all outfitting designs, the lightweight structure model is of great significance to the improvement of design efficiency of all outfitting professions.

[0003] Therefore, it is urgent to study a lightweight design method and system for ship structure models to achieve the replacement of counterweight models, effectively reduce the model loading time and model space occupancy, facilitate the opening, viewing and other related operations of the model, greatly reduce the amount of data interaction with the design platform, and improve design efficiency. Summary of the invention

[0004] In view of the shortcomings of the prior art mentioned above, the purpose of the present invention is to provide a lightweight design method for ship structure models, which is used to solve the problems in the prior art that the model geometric relationships and geometric features are complicated, the surge in data volume leads to slow model opening and operation jams, which is not conducive to design applications in complex scenarios.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a lightweight design method for a ship structure model, comprising the following steps:

[0006] S1. Determine the node organization method of the structural lightweight model;

[0007] S2, constructing a light model structure tree based on the heavy model structure tree;

[0008] S3, generating light model nodes based on the heavy model lightweight node parts information;

[0009] S4, light model open.

[0010] In one embodiment of the present invention, the step of determining the organization mode of the structural lightweight model nodes includes: determining the organization mode of the lightweight model nodes according to different application requirements.

[0011] In one embodiment of the present invention, the organization of the lightweight model nodes includes: organizing the lightweight model nodes according to parts, assemblies (components), sections, regions and total sections.

[0012] In one embodiment of the present invention, the step of constructing a light model structure tree based on the heavy model structure tree includes:

[0013] Traverse the heavy model structure tree, and obtain the model lightweight conversion nodes that meet the requirements according to the model lightweight node organization method; compare the hierarchical relationship from the root node to the lightweight conversion node of the heavy model structure tree with the light model structure tree, create nodes that do not exist in the light model structure tree, and record the unique identifier of the corresponding node of the heavy model in the created light model node for comparison between the light model structure tree and the heavy model structure tree, delete the nodes in the light model structure tree that are inconsistent with the heavy model structure tree, and ensure the consistency of the light model structure tree and the heavy model structure tree;

[0014] Record the correspondence between the heavy model lightweight conversion nodes and the corresponding light model nodes.

[0015] In one embodiment of the present invention, the step of generating a light model node based on the heavy model lightweight node part information includes:

[0016] Establish the correspondence between the heavy model lightweight conversion node and the light model node, obtain the geometric information of all parts under the heavy model lightweight conversion node in turn, and compare the geometric information of each part with the geometric information of the corresponding light model node part. If the geometric information is the same, then the part does not need to be changed;

[0017] If the geometric information is different, update the part;

[0018] If a part in the heavy model cannot be found in the light model, the geometric information of the heavy model part needs to be synchronized to the light model; if a part in the light model cannot be found in the heavy model, the part model should be deleted;

[0019] After completing the update of the part geometry information, compare the name, material, plate thickness or specification information. If the information is inconsistent, update the attribute information on the heavy model part to the corresponding light model part.

[0020] In one embodiment of the present invention, the step of comparing the geometric information of each part with the geometric information of the corresponding light model node part includes: comparing the number and position of topological points in the parts, comparing the volume and center of gravity, and comparing the volume and moment of inertia in a single or combined manner.

[0021] In one embodiment of the present invention, the step of establishing a correspondence between the heavy model lightweight conversion node and the light model node includes: storing a unique identifier of the heavy model part on the light model part or creating an association relationship between the two models.

[0022] In one embodiment of the present invention, the geometric information comparison and lightweighting of the parts can be performed in parallel. In one embodiment of the present invention, the geometric information and attribute information of the light model node parts can be regularly updated through a timed task, and the frequency is adjusted according to actual needs.

[0023] In one embodiment of the present invention, the step of opening the light model includes: organically organizing the lightweight model and the outfitting model through space filtering, attribute filtering or structure tree creation, and then opening it as needed to obtain a light model with the same geometric information and required attribute information as the heavy model.

[0024] As described above, the lightweight design method of a ship structure model of the present invention has the following beneficial effects:

[0025] The present invention effectively realizes lightweight processing of heavy models and achieves the alternative use of heavy models, effectively solving related design scenario problems such as low opening and viewing efficiency caused by large amount of model data, which is beneficial to the opening, viewing and other related operations of the model, greatly reduces the amount of data interaction with the design platform, and improves design efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is a flow chart of a lightweight design method for a ship structure model in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0029] See also Figure 1 The present invention provides a lightweight design method for a ship structure model, comprising the following steps:

[0030] S1. Determine the node organization method of the structural lightweight model:

[0031] According to different application requirements, there are various possibilities for the node organization of the structural lightweight model, which can be organized in different ways such as parts, assemblies (components), sections, regions, and total sections. Before lightweighting, the organization method of the lightweight model nodes needs to be determined according to actual needs;

[0032] S2. Construct a light model structure tree based on the heavy model structure tree:

[0033] Traverse the heavy model structure tree, and obtain the model lightweight conversion nodes that meet the requirements according to the model lightweight node organization method; compare the hierarchical relationship from the root node to the lightweight conversion node of the heavy model structure tree with the light model structure tree, create nodes that do not exist in the light model structure tree, and record the unique identifier of the corresponding node of the heavy model in the created light model node for the aforementioned structure tree comparison, delete the nodes in the light model structure tree that are inconsistent with the heavy model structure tree, and ensure the consistency of the light model structure tree and the heavy model structure tree; record the corresponding relationship between the heavy model lightweight conversion node and the corresponding light model node;

[0034] S3. Generate light model nodes based on the heavy model lightweight node part information:

[0035] According to the correspondence between the heavy model lightweight conversion node and the light model node, the geometric information of all parts under the heavy model lightweight conversion node is obtained in turn, and the geometric information of each part is compared with the geometric information of the corresponding light model node part. If the geometric information is the same, the part does not need to be changed; if the geometric information is different, the part is updated; if the part in the heavy model cannot be found in the light model, the geometric information in the heavy model part needs to be synchronized to the light model; if the part in the light model cannot be found in the heavy model, the part model is deleted. Among them, the comparison of part geometric information can be achieved by comparing the number and position of topological points in the part, comparing the volume and center of gravity, comparing the volume and moment of inertia, etc., or a combination thereof; among them, the establishment of the correspondence between the heavy model parts and the light model parts can be achieved by storing the unique identifier of the heavy model part on the light model part or by creating an association relationship between the two models;

[0036] After completing the update of part geometry information, you need to compare other attribute information that needs to be synchronized, such as name, material, plate thickness / specification, etc. If the information is inconsistent, you need to update the attribute information on the heavy model part to the corresponding light model part.

[0037] Part geometry comparison and lightweighting can be run in parallel to shorten the time required for the entire lightweighting process. The lightweight model can be updated regularly through scheduled tasks, and its frequency can be adjusted according to actual needs;

[0038] S4, light model open:

[0039] After the lightweight model is synchronized, the outfitting profession can, according to actual needs, organically organize the lightweight model and the outfitting model through space filtering, attribute filtering, structure tree creation, etc., and then open it as needed to obtain a light model with the same geometric information and required attribute information as the heavy model.

[0040] In summary, the present invention effectively realizes lightweight processing of heavy models, achieves the replacement of heavy models, effectively solves the problems of related design scenarios such as low efficiency of opening and viewing caused by large amount of model data, is conducive to opening, viewing and other related operations of the model, greatly reduces the amount of data interaction with the design platform, and improves design efficiency. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0041] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may 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 a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A lightweight design method for a ship structure model, characterized in that: The following steps are involved: S1. Determine the organization mode of the structure lightweight model nodes, which includes: determining the organization mode of the lightweight model nodes according to different application requirements; the organization mode of the lightweight model nodes includes: organizing the lightweight model nodes according to parts, assemblies, segments, regions and total segments; S2. Construct a light model structure tree based on the heavy model structure tree, which includes: Traverse the heavy model structure tree and obtain the model lightweight conversion nodes that meet the requirements according to the model lightweight node organization method; Compare the hierarchical relationship between the root node of the heavy model structure tree and the lightweight conversion node with the light model structure tree, create nodes that do not exist in the light model structure tree, and record the unique identifier of the corresponding node of the heavy model in the created light model node for comparison between the light model structure tree and the heavy model structure tree, delete the nodes in the light model structure tree that are inconsistent with the heavy model structure tree, and ensure the consistency of the light model structure tree and the heavy model structure tree; Record the correspondence between the heavy model lightweight conversion nodes and the corresponding light model nodes; S3, generating a light model node based on the heavy model lightweight node part information, which includes: Establish the correspondence between the heavy model lightweight conversion node and the light model node, obtain the geometric information of all parts under the heavy model lightweight conversion node in turn, and compare the geometric information of each part with the geometric information of the corresponding light model node part. If the geometric information is the same, then the part does not need to be changed; If the geometric information is different, update the part; If the parts in the heavy model cannot be found in the light model, the geometric information of the parts in the heavy model needs to be synchronized to the light model; If the part in the light model cannot be found in the heavy model, delete the part model; After completing the update of part geometry information, compare the name, material, plate thickness or specification information. If the information is inconsistent, update the attribute information on the heavy model part to the corresponding light model part. S4, light model open.

2. A lightweight design method for a ship structure model according to claim 1, characterized in that: The step of comparing the geometric information of each part with the geometric information of the corresponding light model node part includes: comparing the number and position of topological points in the part, comparing the volume and center of gravity, and comparing the volume and moment of inertia in a single or combined manner.

3. The method for lightweight design of a ship structure model according to claim 1, characterized in that: The step of establishing the corresponding relationship between the heavy model lightweight conversion node and the light model node includes: storing the unique identification of the heavy model part on the light model part or creating an association relationship between the two models.

4. The method for lightweight design of a ship structure model according to claim 1, characterized in that: The part geometry information comparison and lightweighting are performed in parallel.

5. The method for lightweight design of a ship structure model according to claim 1, characterized in that: The geometric information and attribute information of the light model node parts are regularly updated through a scheduled task, and the frequency is adjusted according to actual needs.

6. A lightweight design method for a ship structure model according to claim 1, characterized in that: The step of opening the light model includes: organically organizing the lightweight model and the outfitting model by space filtering, attribute filtering or structure tree creation, and then opening as needed to obtain the light model with the same geometric information and required attribute information as the heavy model.

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