CN117077279A - Quick modeling method and system for converting ship light-wall two-dimensional engineering drawing into three-dimensional model - Google Patents
Quick modeling method and system for converting ship light-wall two-dimensional engineering drawing into three-dimensional model Download PDFInfo
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- CN117077279A CN117077279A CN202310882864.XA CN202310882864A CN117077279A CN 117077279 A CN117077279 A CN 117077279A CN 202310882864 A CN202310882864 A CN 202310882864A CN 117077279 A CN117077279 A CN 117077279A
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- 239000003351 stiffener Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 description 2
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/12—Geometric CAD characterised by design entry means specially adapted for CAD, e.g. graphical user interfaces [GUI] specially adapted for CAD
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Abstract
The application discloses a rapid modeling method and a rapid modeling system for converting a two-dimensional engineering drawing of a ship light enclosure wall into a three-dimensional model, wherein the method comprises the following steps: 1) Preprocessing a light-wall two-dimensional engineering drawing; deleting repeated lines and unnecessary drawing information, prolonging lines intersecting with ship outer plate boundaries in the engineering drawing, and simultaneously adjusting a global coordinate system of the drawing to keep consistent with the global coordinate system in the three-dimensional modeling software; 2) Creating a light surrounding wall theoretical surface in batches; importing the preprocessed engineering drawing into three-dimensional modeling software, obtaining a theoretical line of the light enclosing wall through feature extraction, and generating theoretical surfaces of the light enclosing wall in batches along the stretching of the height direction; the upper and lower boundaries of the theoretical surface of the light surrounding wall are higher than the corresponding decks; 3) Creating a light surrounding wall three-dimensional model; and creating a light surrounding wall on the basis of a theoretical surface, selecting boundary conditions, and defining related information to realize the rapid creation of a three-dimensional model of the light surrounding wall. The application can improve the three-dimensional modeling efficiency and accuracy of the light surrounding wall and shorten the design period of the ship.
Description
Technical Field
The application belongs to the technical field of ship structural design, and particularly relates to a rapid modeling method and a rapid modeling system for converting a ship light-wall two-dimensional engineering drawing into a three-dimensional model.
Background
The light enclosure wall of a ship is one of the most widely used structural forms on the ship, dividing the cabins according to the overall arrangement needs. For the three-dimensional modeling of the light-wall of the ship, the traditional method can only manually create the theoretical surface of the light-wall in three-dimensional software, and the traditional method can meet the requirement of the modeling of the light-wall, but has the following defects:
firstly, the operation is tedious and the efficiency is low. In order to meet the overall arrangement requirement, the light surrounding wall is relatively more in bending, and the traditional modeling method can only manually singly create the theoretical surface of the light surrounding wall, so that the operation process is complex, the time consumption is long, and the efficiency is low.
Secondly, the fault tolerance is low. The traditional modeling method is to perform modeling on the basis of manually measuring a two-dimensional engineering drawing, is easy to cause operational errors such as size deviation and positioning deviation, has low fault tolerance, and needs to spend a large amount of time for checking in the later period.
Disclosure of Invention
The application aims to provide a rapid modeling method and a rapid modeling system for converting a two-dimensional engineering drawing of a ship light-enclosure wall into a three-dimensional model, which solve the problems of low efficiency, complex operation and low fault tolerance caused by the fact that a single light-enclosure wall can be created only by manually taking the two-dimensional engineering drawing, and integrally improve the three-dimensional design efficiency of the ship light-enclosure wall on the premise of ensuring modeling precision.
The technical scheme adopted by the application is as follows:
a rapid modeling method for converting a two-dimensional engineering drawing of a ship light enclosure wall into a three-dimensional model comprises the following steps:
1) Light wall two-dimensional engineering drawing pretreatment
Preprocessing a ship light-wall two-dimensional engineering drawing, deleting repeated lines and unnecessary drawing information, prolonging lines intersecting with ship outer plate boundaries in the light-wall two-dimensional engineering drawing, and simultaneously adjusting a global coordinate system of the drawing to keep consistent with the global coordinate system in three-dimensional modeling software;
2) Light wall theoretical surface batch creation
Importing the preprocessed two-dimensional engineering drawing of the light enclosure wall into three-dimensional modeling software, obtaining a theoretical line of the light enclosure wall through feature extraction, and generating theoretical surfaces of the light enclosure wall in batches along the stretching of the height direction; the upper and lower boundaries of the theoretical surface of the light surrounding wall are higher than the corresponding decks;
3) Light wall three-dimensional model creation
And creating a light surrounding wall on the basis of a theoretical surface, selecting boundary conditions, and defining related information to realize the rapid creation of a three-dimensional model of the light surrounding wall.
Further, the unnecessary drawing information includes a cabin number and a rib position number; the three-dimensional modeling software was 3DE.
Further, theoretical lines of the light surrounding wall are obtained by extracting outline features of the engineering drawing.
Further, selecting an upper deck, a lower deck and an outer plate which are intersected with a theoretical surface as boundary conditions; the related information includes plate thickness, material properties, and stiffener information.
Further, the preprocessed light-wall two-dimensional engineering drawing and the light-wall three-dimensional model are placed under an assembly tree, and when the technical state of the light-wall changes, the technical state of the light-wall three-dimensional model is synchronously updated by updating and replacing the old version of the light-wall two-dimensional engineering drawing.
A rapid modeling system for converting a two-dimensional engineering drawing of a ship light enclosure wall into a three-dimensional model, comprising:
the light-wall two-dimensional engineering drawing preprocessing module is used for preprocessing the ship light-wall two-dimensional engineering drawing, deleting repeated lines and unnecessary drawing information, prolonging the lines intersecting with the ship outer plate boundary in the light-wall two-dimensional engineering drawing, and simultaneously adjusting the global coordinate system of the drawing to keep the same with the global coordinate system in the three-dimensional modeling software;
the light-wall theoretical surface batch creation module is used for importing the preprocessed light-wall two-dimensional engineering drawing into three-dimensional modeling software, obtaining a theoretical line of the light-wall through feature extraction, and then stretching along the height direction to generate the theoretical surface of the light-wall in batch; the upper and lower boundaries of the theoretical surface of the light surrounding wall are higher than the corresponding decks;
and the light-wall three-dimensional model creation module is used for creating a light-wall on the basis of a theoretical surface, selecting boundary conditions, defining related information and realizing the rapid creation of the light-wall three-dimensional model.
Further, the unnecessary drawing information includes a cabin number and a rib position number; the three-dimensional modeling software was 3DE.
Further, theoretical lines of the light surrounding wall are obtained by extracting outline features of the engineering drawing.
Further, selecting an upper deck, a lower deck and an outer plate which are intersected with a theoretical surface as boundary conditions; the related information includes plate thickness, material properties, and stiffener information.
Further, the preprocessed light-wall two-dimensional engineering drawing and the light-wall three-dimensional model are placed under an assembly tree, and when the technical state of the light-wall changes, the technical state of the light-wall three-dimensional model is synchronously updated by updating and replacing the old version of the light-wall two-dimensional engineering drawing.
Compared with the prior art, the application has the following advantages:
firstly, realizing the batch creation of the light enclosing walls, greatly reducing the times of manual repeated operation and shortening the design period;
secondly, the light surrounding wall is directly generated by extracting the two-dimensional engineering drawing information of the light surrounding wall, so that the operation errors caused by manually taking the engineering drawing are avoided, and the modeling accuracy is improved;
thirdly, the light wall engineering drawing and the three-dimensional model can realize synchronous updating of technical states under one assembly tree.
Drawings
FIG. 1 is a flow chart of the method of the present application;
FIG. 2 is a two-dimensional engineering drawing of the light enclosure wall before and after the treatment of the present application;
FIG. 3 is a schematic view of the light wall theory of the present application;
FIG. 4 is a schematic view of the theoretical surface of a light enclosure wall of the present application;
FIG. 5 is a schematic view of a three-dimensional model of a light enclosure wall according to the application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. In addition, the technical features of the embodiments of the present application described below may be combined with each other as long as they do not collide with each other.
The application provides a rapid modeling method and a rapid modeling system for converting a two-dimensional engineering drawing of a ship light-wall into a three-dimensional model, which aim to improve the three-dimensional modeling efficiency and accuracy of the light-wall and shorten the design period of the ship.
The application relates to a rapid modeling method for converting a ship light-wall two-dimensional engineering drawing into a three-dimensional model, which comprises the following steps:
1) Light wall two-dimensional engineering drawing pretreatment
Preprocessing the two-dimensional engineering drawing of the light enclosing wall, and deleting repeated lines and unnecessary drawing information. Considering that the ship outer plate has a certain curvature, in order to ensure that the theoretical surface of the light surrounding wall is fully intersected with the outer plate, the line intersected with the boundary of the outer plate is prolonged, and meanwhile, the global coordinate system of the adjusting drawing is consistent with the global coordinate system in the three-dimensional modeling software.
2) Light wall theoretical surface batch creation
And importing the preprocessed two-dimensional engineering drawing of the light enclosing wall into three-dimensional software, obtaining a theoretical line of the light enclosing wall by extracting outline features of the engineering drawing, and generating theoretical surfaces of the light enclosing wall in batches along the stretching of the height direction. In order to ensure that the theoretical surface of the light surrounding wall is fully intersected with the deck, the upper and lower boundaries of the theoretical surface of the light surrounding wall are higher than the corresponding deck.
3) Light wall three-dimensional model creation
On the basis of a theoretical surface, a light surrounding wall is created, an upper deck, a lower deck, an outer plate and the like which are intersected with the light surrounding wall are selected as boundary conditions, and information such as plate thickness, material properties and the like is defined, so that the rapid creation of a three-dimensional model of the light surrounding wall is realized.
And the preprocessed light wall engineering drawing and the three-dimensional model realize synchronous updating of the technical state of the light wall model by updating the engineering drawing of the replacement old version when the technical state of the light wall changes under an assembly tree.
The following describes an example of a ship bow section light wall on a 3DE platform, and as shown in fig. 1, the specific implementation steps of the method for quickly modeling a ship light wall two-dimensional engineering drawing to a three-dimensional model in this embodiment are as follows:
1) Light wall two-dimensional engineering drawing pretreatment
Deleting unnecessary drawing information in the two-dimensional engineering drawing, such as cabin numbers, rib positions and the like, extending lines intersecting with the expected outer plate boundary, such as intersections with the outer plates and main intersections, and checking whether repeated lines, broken lines and the like exist. And the global coordinate system in the adjusting engineering drawing is consistent with the global coordinate system of the ship in 3DE, and the two-dimensional engineering drawing of the light surrounding wall before and after treatment is shown in figure 2.
2) Light wall two-dimensional engineering drawing leading-in 3DE
Creating a geometric figure set in 3DE, creating a sketch, copying the processed light-wall two-dimensional engineering drawing into the sketch, extracting lines in the sketch through characteristics, and outputting light-wall theoretical lines, as shown in FIG. 3.
3) And (5) creating a light-wall three-dimensional model.
By stretching commands, profile in the pop-up dialog box selects the light wall theoretical line generated in the last step, direction selects the Z axis, and the lengths of limit1 and limit2 are filled in, so that the light wall theoretical surface is created, as shown in fig. 4.
And (3) setting the geometric figure set of the 'light secondary wall' as the current, clicking a Structure function design to be switched to an SFD module, clicking a Panel in a function command field to build a board, selecting PB_Partification bulk by the type of an engineering dictionary, selecting upper and lower decks, outer plates and the like which are intersected with the board as boundary conditions, and defining information such as board thickness, material properties, reinforcing ribs and the like, wherein a light secondary wall three-dimensional model is shown in figure 5.
The application also provides a rapid modeling system for converting the two-dimensional engineering drawing of the ship light enclosure wall into the three-dimensional model, which comprises the following steps:
the light-wall two-dimensional engineering drawing preprocessing module is used for preprocessing the ship light-wall two-dimensional engineering drawing, deleting repeated lines and unnecessary drawing information, prolonging the lines intersecting with the ship outer plate boundary in the light-wall two-dimensional engineering drawing, and simultaneously adjusting the global coordinate system of the drawing to keep the same with the global coordinate system in the three-dimensional modeling software;
the light-wall theoretical surface batch creation module is used for importing the preprocessed light-wall two-dimensional engineering drawing into three-dimensional modeling software, obtaining a theoretical line of the light-wall through feature extraction, and then stretching along the height direction to generate the theoretical surface of the light-wall in batch; the upper and lower boundaries of the theoretical surface of the light surrounding wall are higher than the corresponding decks;
and the light-wall three-dimensional model creation module is used for creating a light-wall on the basis of a theoretical surface, selecting boundary conditions, defining related information and realizing the rapid creation of the light-wall three-dimensional model.
Further, the unnecessary drawing information includes a cabin number and a rib position number; the three-dimensional modeling software was 3DE.
Further, theoretical lines of the light surrounding wall are obtained by extracting outline features of the engineering drawing.
Further, selecting an upper deck, a lower deck and an outer plate which are intersected with a theoretical surface as boundary conditions; the related information includes plate thickness, material properties, and stiffener information.
Further, the preprocessed light-wall two-dimensional engineering drawing and the light-wall three-dimensional model are placed under an assembly tree, and when the technical state of the light-wall changes, the technical state of the light-wall three-dimensional model is synchronously updated by updating and replacing the old version of the light-wall two-dimensional engineering drawing.
It should be noted that each step/component described in the present application may be split into more steps/components, or two or more steps/components or part of operations of the steps/components may be combined into new steps/components, according to the implementation needs, to achieve the object of the present application.
It will be readily appreciated by those skilled in the art that the foregoing is merely a preferred embodiment of the application and is not intended to limit the application, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. A rapid modeling method for converting a two-dimensional engineering drawing of a ship light enclosure wall into a three-dimensional model is characterized by comprising the following steps:
1) Light wall two-dimensional engineering drawing pretreatment
Preprocessing a ship light-wall two-dimensional engineering drawing, deleting repeated lines and unnecessary drawing information, prolonging lines intersecting with ship outer plate boundaries in the light-wall two-dimensional engineering drawing, and simultaneously adjusting a global coordinate system of the drawing to keep consistent with the global coordinate system in three-dimensional modeling software;
2) Light wall theoretical surface batch creation
Importing the preprocessed two-dimensional engineering drawing of the light enclosure wall into three-dimensional modeling software, obtaining a theoretical line of the light enclosure wall through feature extraction, and generating theoretical surfaces of the light enclosure wall in batches along the stretching of the height direction; the upper and lower boundaries of the theoretical surface of the light surrounding wall are higher than the corresponding decks;
3) Light wall three-dimensional model creation
And creating a light surrounding wall on the basis of a theoretical surface, selecting boundary conditions, and defining related information to realize the rapid creation of a three-dimensional model of the light surrounding wall.
2. The method for quickly modeling a two-dimensional engineering drawing to three-dimensional model of a ship light enclosure wall according to claim 1, wherein the unnecessary drawing information comprises a cabin number and a rib position number; the three-dimensional modeling software was 3DE.
3. The method for quickly modeling a two-dimensional engineering drawing to three-dimensional model of a ship light enclosure wall according to claim 1, wherein theoretical lines of the light enclosure wall are obtained by extracting contour features of the engineering drawing.
4. The rapid modeling method for converting a two-dimensional engineering drawing of a ship light enclosure wall into a three-dimensional model according to claim 1, wherein an upper deck, a lower deck and an outer plate which intersect a theoretical surface are selected as boundary conditions; the related information includes plate thickness, material properties, and stiffener information.
5. The method for quickly modeling a ship light-wall two-dimensional engineering drawing to a three-dimensional model according to claim 1, wherein the pretreated light-wall two-dimensional engineering drawing and the light-wall three-dimensional model are placed under an assembly tree, and when the technical state of the light-wall changes, the technical state of the light-wall three-dimensional model is synchronously updated by updating and replacing the old version of the light-wall two-dimensional engineering drawing.
6. A rapid modeling system for converting a two-dimensional engineering drawing of a ship light enclosure wall into a three-dimensional model, comprising:
the light-wall two-dimensional engineering drawing preprocessing module is used for preprocessing the ship light-wall two-dimensional engineering drawing, deleting repeated lines and unnecessary drawing information, prolonging the lines intersecting with the ship outer plate boundary in the light-wall two-dimensional engineering drawing, and simultaneously adjusting the global coordinate system of the drawing to keep the same with the global coordinate system in the three-dimensional modeling software;
the light-wall theoretical surface batch creation module is used for importing the preprocessed light-wall two-dimensional engineering drawing into three-dimensional modeling software, obtaining a theoretical line of the light-wall through feature extraction, and then stretching along the height direction to generate the theoretical surface of the light-wall in batch; the upper and lower boundaries of the theoretical surface of the light surrounding wall are higher than the corresponding decks;
and the light-wall three-dimensional model creation module is used for creating a light-wall on the basis of a theoretical surface, selecting boundary conditions, defining related information and realizing the rapid creation of the light-wall three-dimensional model.
7. The rapid modeling system for converting a two-dimensional engineering drawing to a three-dimensional model of a ship light enclosure wall according to claim 6, wherein the unnecessary drawing information comprises a cabin number and a rib position number; the three-dimensional modeling software was 3DE.
8. The rapid modeling system for converting a two-dimensional engineering drawing to a three-dimensional model of a ship light enclosure wall according to claim 6, wherein the theoretical line of the light enclosure wall is obtained by extracting contour features of the engineering drawing.
9. The rapid modeling system for converting a two-dimensional engineering drawing into a three-dimensional model of a ship light enclosure wall according to claim 6, wherein an upper deck, a lower deck and an outer deck which intersect with a theoretical surface are selected as boundary conditions; the related information includes plate thickness, material properties, and stiffener information.
10. The rapid modeling system for converting a two-dimensional engineering drawing of a ship to a three-dimensional model according to claim 6, wherein the pretreated two-dimensional engineering drawing of the light wall and the three-dimensional model of the light wall are placed under an assembly tree, and when the technical state of the light wall changes, the technical state of the three-dimensional model of the light wall is synchronously updated by updating the two-dimensional engineering drawing of the light wall of which the old version is replaced.
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| CN202310882864.XA CN117077279A (en) | 2023-07-17 | 2023-07-17 | Quick modeling method and system for converting ship light-wall two-dimensional engineering drawing into three-dimensional model |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117576359A (en) * | 2024-01-16 | 2024-02-20 | 北京德塔精要信息技术有限公司 | 3D model construction method and device based on Unity webpage platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117576359A (en) * | 2024-01-16 | 2024-02-20 | 北京德塔精要信息技术有限公司 | 3D model construction method and device based on Unity webpage platform |
| CN117576359B (en) * | 2024-01-16 | 2024-04-12 | 北京德塔精要信息技术有限公司 | 3D model construction method and device based on Unity webpage platform |
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