CN110619163A - Ship structure visualization system based on multi-scale model - Google Patents
Ship structure visualization system based on multi-scale model Download PDFInfo
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Abstract
The invention relates to a ship structural part visualization system based on a multi-scale model, which comprises: the MBD multi-scale model building module is used for respectively defining models of the ship structural member under three scale levels of macroscopic scale, mesoscopic scale and microscopic scale based on the MBD multi-scale body model; the structure multi-scale information storage module is used for storing different scale information of the ship structure; the structure three-dimensional model lightweight module compresses a three-dimensional model file of a ship structure into a lightweight format, so that data of each link of a product processing flow can be conveniently and quickly transmitted, and analysis and processing of a model can be conveniently performed; the ship structural part visualization module is used for visualizing the ship structural part on different scales, so that various information of the ship structural part can be conveniently and visually displayed by engineering designers.
Description
Technical Field
The invention relates to the field of ship design and construction, in particular to a ship structural part visualization system based on a multi-scale model.
Background
The manufacturing industry has become a great field influencing the economic development of China, and the ship manufacturing field of China has been developed vigorously and enters the top ranks of the world. In the manufacturing process of ships, due to the fact that the number of ship structural members is large, the requirements for structural member materials are high, and important information of the ship structural members is required to be obtained in the design and construction stage. Particularly, in the design and processing assembly processes of high value-added ships, at present, enterprises mostly adopt a traditional design method combining two-dimensional and three-dimensional, the geometric shape characteristics of products are presented in a three-dimensional form, and information such as processes, manufacturing and related inspection standards are separated from a three-dimensional model and are displayed in a two-dimensional drawing or other documents independently. Obviously, the definition mode lacks intuition, the guidance file in a pure text format is easy to cause ambiguity among links such as design, process, processing and the like, so that information exchange among departments is not smooth, field process personnel cannot perform full three-dimensional processing and inspection according to information provided by the design department, and the quality precision of the product cannot be guaranteed. In addition, in the actual production process, the material performance of the ship structural member cannot be visually displayed, and much inconvenience is caused to engineering personnel.
Through the literature search of the prior art, the domestic and foreign scholars also obtain a plurality of research results aiming at the modeling and application methods of the ontology in the processing and manufacturing field. Zheng-rank et al put forward a holographic semantic model facing a virtual product in 'virtual product modeling research based on assembly characteristic ontology expression', use a meta-object system structure idea to express a product assembly framework, use a network ontology language to describe virtual assembly ontology semantic information, give a data storage structure and a model information recombination algorithm in the ontology model, and realize heterogeneous information integration and sharing. However, the assembly characteristic ontology expression framework and the expression of the virtual product holographic semantic model have some defects, so that the physical attribute-based virtual product behavior modeling and the virtual assembly process motion navigation are realized; modeling is carried out in the virtual assembly process based on the Petri network, and a foundation is laid for double-hand operation and parallel assembly; and realizing an assembly planning reasoning mechanism combining a logic layer and a geometric layer.
Through the literature retrieval discovery to prior art, the axle is managed and is added the visual project of managing of workshop manufacturing process in shipyard as the background in "research and realization of boats and ships pipe fitting manufacturing state data management system" a text to solve and manage and add the actual manufacturing process management demand of workshop as the target, carry out contrastive analysis from current project management, workflow management starting to the actual demand of workshop manufacturing process management, summarize the management content of managing of pipe and workshop manufacturing process management, and carry out corresponding software system development to this. However, the system is not closely combined with the actual production process engineering, which reduces the efficiency of the manufacturing process, and is not closely combined with other systems, which results in an imperfect monitoring function.
Disclosure of Invention
The purpose of the invention is: the ship structure information acquisition system is convenient for engineering designers to complete work and is convenient for visually acquiring relevant information of the ship structure.
In order to achieve the above object, the technical solution of the present invention is to provide a ship structure visualization system based on a multi-scale model, which is characterized by comprising:
the MBD multi-scale model building module is used for respectively defining models of a ship structural member under three scale levels of macroscopic scale, mesoscopic scale and microscopic scale based on an MBD multi-scale body model to obtain an MBD macroscopic scale information model, a mesoscopic scale MBD information model and a microscopic scale MBD information model, wherein: the MBD macro scale information model takes a three-dimensional model as a basic carrier, closely associates process design information in a manufacturing process information model with an entity model in a three-dimensional labeling form, and enables product geometric data and non-geometric information in CAD to be highly integrated; the mesoscale MBD information model is mainly used for describing the surface material characteristics in the workpiece processing process; the microscale MBD information model is mainly used for describing the characteristics of a surface layer material in the process of processing a workpiece;
the structure multi-scale information storage module is used for storing different scale information of the ship structure on the premise that the MBD multi-scale model is built;
the structure three-dimensional model lightweight module compresses a three-dimensional model file of a ship structure into a lightweight format, so that data of each link of a product processing flow can be conveniently and quickly transmitted, and analysis and processing of a model can be conveniently performed;
the ship structural part visualization module is used for visualizing the ship structural part on different scales.
Preferably, the multi-scale information storage module stores the multi-scale information of the ship structural member into an MBD multi-scale ontology knowledge model expressed and structured by OWL language.
Preferably, the structural member three-dimensional model lightweight module describes the three-dimensional model by adopting a CAD format STEP according to the MBD macro scale information model, the meso scale MBD information model and the micro scale MBD information model of the structural member, compresses the model file into a lightweight format under the condition of ensuring certain precision, and uses the lightweight format as a carrier of various non-geometric information to realize the rapid data transmission of each link of the product processing flow.
Preferably, the ship structure visualization module comprises five functional areas as menu bars, and the five functional areas comprise engineering opening and saving, model importing and model data updating; the attribute column displays the technological process of the ship structural member; a model display area; the step area displays the step sequence corresponding to the working procedure; and the processing parameter area displays the processing requirements and the processing parameter information of the current step.
Preferably, the design information in the MBD macro-scale information model is expressed on the three-dimensional model by referring to the national standard GB/T24734-.
Preferably, the mesoscale MBD information model is in a range between macroscopic and microscopic dimensions, is different from a microscopic model that simply reflects an electron-atomic layer-level behavior state in a detection region of a matrix material, and is also different from a macroscopic model that directly reflects characteristic changes such as dimensional deformation and fracture in a processing process, and abstractly and specifically reflects characteristics in some key regions of each processing component at a combination point of the macroscopic and microscopic dimensions.
Preferably, the micro-scale MBD information model refers to the surface roughness of the structural part and internal machining effects in a certain depth below the surface of the machined part.
Preferably, the ship structure visualization module displays a certain ship structure in three levels of macroscopic level, mesoscopic level and microscopic level during visualization operation, so that engineering personnel can conveniently view detailed information.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: aiming at the practical problems that the existing ship structural member visualization system does not display multi-scale information, multi-dimensional information is lacked in the visualization process and the like, the multi-scale MBD-based information model comprises geometric information and manufacturing information required in structural member processing from macroscopic, mesoscopic and microscopic levels, and integrates easily deformed material surface attribute information, the definition of the full life cycle of the MBD model is completed, the body construction of the multi-scale model is completed, the visualization of partial functional information in HOOPS is realized by using a STEP neutral file description format, the production and processing digitization level of the structural member is further improved based on the multi-scale MBD information modeling, and the manufacturing quality and precision are ensured.
Drawings
FIG. 1 is a process flow of an ontology model construction method;
FIG. 2 is a set of MBD-based macro-scale model data;
FIG. 3 is a mesoscale MBD information model;
FIG. 4 is a micro-scale MBD information model;
fig. 5 is a STEP file information reading flow;
FIG. 6 is a multi-scale model visualization application platform architecture of a ship structural member;
FIG. 7MBD multi-scale model visualization application platform user interface;
fig. 8 is an overall flow chart of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The invention provides a ship structure visualization system based on a multi-scale model, which mainly comprises the following steps:
before the multi-scale model is constructed, the ontology model is constructed, and the construction process is shown in fig. 1.
The multi-scale model constructed by the invention is mainly developed from three levels, including a macroscopic scale, a mesoscopic scale and a microscopic scale.
And (3) macroscopic scale: the macro scale information model based on the MBD adopts a three-dimensional design model as a carrier, and integrates PMI three-dimensional information annotation of a product to express all process information required by downstream production (such as numerical control processing, metering, inspection and the like). The model expresses the characteristic information of the product in a concise and understandable three-dimensional form, and the three-dimensional annotation can accurately express the information of the characteristic dimension, the processing requirement and the like of the product, so that the design model can be provided for field personnel to quickly check the reasonability of related design, the overall production time consumed by process change is reduced, the workload is greatly reduced for departments of downstream assembly, inspection and the like, and the high integration of a CAD/CAE/CAM/CAPP system is realized. As shown in fig. 2.
Mesoscopic scale: within this scale, various essential process characteristics in the process of machining and manufacturing parts can be reflected. The mesoscopic model is different from a microscopic model which simply reflects the electronic and atomic layer upper behavior states in a matrix material detection area and a macroscopic model which directly reflects the characteristic changes such as size deformation, fracture and the like in the processing process, and abstractly and specifically reflects the characteristics in some key areas of each processing part on the combination point of the microscopic model and the macroscopic model, such as the local surface finish change of materials under different processes and the implementation of the crystallization and phase change processes. By utilizing the established mesoscopic model containing rich information content, the transformation rule of the microstructure of the material can be visually and clearly seen and analyzed, so that an improved optimization method of the process is found. As shown in fig. 3.
And (3) micro-scale: in addition to surface roughness, internal machining effects such as residual stress, microstructure, grain boundary corrosion, microcracks, and metallographic structure changes within a certain depth below the surface of the machined part can also have a significant effect on the part's performance. For example, in order to realize high-efficiency and high-quality material processing, MBD modeling is carried out on micro-scale information of a processed part, the influence of different process parameters of a tool clamp in the processing process on the processing micro-level quality is researched, the removal mechanism of the processed material, the change of surface microstructure and the distribution of residual stress are discussed in depth, a basis is provided for realizing the parameter optimization of the processing process, and the shape control and the controllability of the part processing process are facilitated. The micro-scale model is shown in FIG. 4.
The MBD multi-scale model building module is used for respectively defining models of the ship structural member under three scale levels of macroscopic scale, mesoscopic scale and microscopic scale based on the MBD multi-scale body model; the structure multi-scale information storage module is used for storing different scale information of the ship structure; the structure three-dimensional model lightweight module compresses a three-dimensional model file of a ship structure into a lightweight format, so that data of each link of a product processing flow can be conveniently and quickly transmitted, and analysis and processing of a model can be conveniently performed; the ship structural part visualization module is used for visualizing the ship structural part on different scales, so that various information of the ship structural part can be conveniently and visually displayed by engineering designers.
After the models at different scale levels are constructed, multi-scale information of the structural part needs to be stored, in the design, processing and assembly processes of the ship structural part, a plurality of time nodes are divided according to processing time required by each process step of a product, the state of the product is collected by using sensing equipment and a label technology (such as RFID/NFC/QR code and the like), and the information of each stage is sequentially stored into a product digital label, so that the product forms memory, and when a downstream process is carried out, the product can properly adjust processing parameters by referring to the information of the previous stage, and the information storage of the multi-scale model is realized.
In order to realize the light weight of the three-dimensional model of the ship structural member, when visualization is carried out in the embodiment of the invention, the three-dimensional model is described by adopting a brand-new CAD format STEP, and under the condition of ensuring certain precision, the model file is compressed into a light-weight format and is used as a carrier of various non-geometric information to realize the rapid data transmission of each link of the product processing flow.
Geometric information and topological information in the STEP neutral file of the structural component established in the PRO/E are extracted by analyzing the STEP neutral file, the geometric information and the topological information are stored according to a certain format and serve as a basis for realizing model reconstruction in the HOOPS, and the information extraction process is shown in the following figure 5.
The main example application architecture of the MBD multi-scale model visualization application platform is shown in fig. 6. The user main interface is developed to include five functional areas, as shown in fig. 7. The top area 1 is a menu bar and comprises functions of opening and saving projects, importing models, updating model data and the like; the left area 2 displays the process flow of a certain structural part; the area 3 is a model display area; the area 4 is used for displaying the process step sequence corresponding to the working procedure, and correspondingly displaying the process model of the process step by selecting the process on the structure tree in the left column; the right area 5 displays the current processing requirements and parameters of the process steps.
In the application process of the visual platform, the visual platform can display the information of different scales of the structural part, and can visualize the information of the whole process of designing and constructing the ship, thereby facilitating engineering designers and accelerating the efficiency. .
Claims (8)
1. A ship structure visualization system based on a multi-scale model is characterized by comprising:
the MBD multi-scale model building module is used for respectively defining models of a ship structural member under three scale levels of macroscopic scale, mesoscopic scale and microscopic scale based on an MBD multi-scale body model to obtain an MBD macroscopic scale information model, a mesoscopic scale MBD information model and a microscopic scale MBD information model, wherein: the MBD macro scale information model takes a three-dimensional model as a basic carrier, closely associates process design information in a manufacturing process information model with an entity model in a three-dimensional labeling form, and enables product geometric data and non-geometric information in CAD to be highly integrated; the mesoscale MBD information model is mainly used for describing the surface material characteristics in the workpiece processing process; the microscale MBD information model is mainly used for describing the characteristics of a surface layer material in the process of processing a workpiece;
the structure multi-scale information storage module is used for storing different scale information of the ship structure on the premise that the MBD multi-scale model is built;
the structure three-dimensional model lightweight module compresses a three-dimensional model file of a ship structure into a lightweight format, so that data of each link of a product processing flow can be conveniently and quickly transmitted, and analysis and processing of a model can be conveniently performed;
the ship structural part visualization module is used for visualizing the ship structural part on different scales.
2. The system as claimed in claim 1, wherein the structure multi-scale information storage module stores the multi-scale information of the ship structure into the MBD multi-scale ontology model structured in OWL language.
3. The ship structural member visualization system based on the multi-scale model as claimed in claim 1, wherein the structural member three-dimensional model lightweight module describes the three-dimensional model by adopting a CAD format STEP according to the MBD macro-scale information model, the meso-scale MBD information model and the micro-scale MBD information model of the structural member, compresses the model file into a lightweight format under the condition of ensuring a certain precision, and uses the lightweight format as a carrier of various non-geometric information to realize the rapid data transmission of each link of the product processing flow.
4. The system of claim 1, wherein the ship structure visualization module comprises five functional areas as menu bars, including project opening and saving, model importing and model data updating; the attribute column displays the technological process of the ship structural member; a model display area; the step area displays the step sequence corresponding to the working procedure; and the processing parameter area displays the processing requirements and the processing parameter information of the current step.
5. The system as claimed in claim 1, wherein the design information in the MBD macro scale information model is expressed on the three-dimensional model with reference to the national standard GB/T24734-.
6. The system as claimed in claim 1, wherein the meso-scale MBD information model is between macro and micro size, different from a micro model that simply reflects the electronic and atomic layer-level behavior state in the detection area of the substrate material, and different from a macro model that directly reflects the feature changes such as dimensional deformation and fracture during the processing, and abstractly and specifically reflects the features in some key areas of each processing component at the combination point of micro and macro.
7. The system for visualizing the structural part of the ship based on the multi-scale model as claimed in claim 1, wherein the micro-scale MBD information model refers to the surface roughness of the structural part and the internal machining effect within a certain depth below the surface of the machined part.
8. The system as claimed in claim 1, wherein the ship structure visualization module displays a ship structure in three levels of macroscopic, mesoscopic and microscopic during the visualization operation, so as to facilitate the engineers to view detailed information.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112434376A (en) * | 2020-12-01 | 2021-03-02 | 沪东中华造船(集团)有限公司 | Rapid conversion method for heterogeneous CAD hull model of SPD system |
| CN113392468A (en) * | 2021-06-15 | 2021-09-14 | 中国船舶工业集团公司第七0八研究所 | Pretreatment method for three-dimensional design of ship plane plate frame structure |
| CN113449354A (en) * | 2021-06-25 | 2021-09-28 | 中国舰船研究设计中心 | IPDE-based ship product three-dimensional model data visualization construction method |
| CN113618723A (en) * | 2021-08-18 | 2021-11-09 | 东华大学 | Ship small-erection auxiliary assembly system based on augmented reality |
| CN115630437A (en) * | 2022-10-17 | 2023-01-20 | 中国船舶重工集团公司第七一九研究所 | Product data management method compatible with ship design and construction |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112434376A (en) * | 2020-12-01 | 2021-03-02 | 沪东中华造船(集团)有限公司 | Rapid conversion method for heterogeneous CAD hull model of SPD system |
| CN113392468A (en) * | 2021-06-15 | 2021-09-14 | 中国船舶工业集团公司第七0八研究所 | Pretreatment method for three-dimensional design of ship plane plate frame structure |
| CN113392468B (en) * | 2021-06-15 | 2022-09-16 | 中国船舶工业集团公司第七0八研究所 | Pretreatment method for three-dimensional design of ship plane plate frame structure |
| CN113449354A (en) * | 2021-06-25 | 2021-09-28 | 中国舰船研究设计中心 | IPDE-based ship product three-dimensional model data visualization construction method |
| CN113449354B (en) * | 2021-06-25 | 2022-03-01 | 中国舰船研究设计中心 | IPDE-based ship product three-dimensional model data visualization construction method |
| CN113618723A (en) * | 2021-08-18 | 2021-11-09 | 东华大学 | Ship small-erection auxiliary assembly system based on augmented reality |
| CN115630437A (en) * | 2022-10-17 | 2023-01-20 | 中国船舶重工集团公司第七一九研究所 | Product data management method compatible with ship design and construction |
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Application publication date: 20191227 |