Simulation evaluation preparation method and device for ship outfitting parts based on one-dimensional model

Abstract

The present invention provides a method for preparing simulation evaluation of ship outfitting parts based on a one-dimensional model, comprising the following steps: obtaining a three-dimensional model of the ship's outfitting parts; determining the characteristic attributes, center line, boundary information and force information of the outfitting parts based on the three-dimensional model; creating a one-dimensional model of the outfitting parts based on the center line; applying a preset mapping rule according to the characteristic attributes, the boundary information, the force information and the one-dimensional model to determine the mapped one-dimensional model; the one-dimensional model is used to simulate and evaluate the outfitting parts. The method and device for preparing simulation evaluation of ship outfitting parts based on a one-dimensional model of the present invention can quickly carry out simulation work by reducing the dimensionality of the three-dimensional model of the ship; and realize automatic extraction and mapping of information; at the same time, since the analysis information all comes from the design model, manual operation is weakened, and the operation error rate is reduced, so that designers can focus more on design.

Description

Technical Field

[0001] The present invention relates to the field of ship design and construction, and in particular to a method and a device for preparing simulation evaluation of ship outfitting based on a one-dimensional model. Background Art

[0002] The outfitting of a ship involves multiple disciplines such as piping, air ducts, iron outfitting, and interior decoration. The current outfitting design has added a simulation evaluation link to quickly evaluate the design results, so as to conduct timely design inspection and optimization; the construction of the simulation model is the focus of this link.

[0003] There are two main ways to build simulation models in the prior art. The first way is to rebuild a simulation model after the outfitting design is completed, and then carry out simulation work based on this simulation model; the second way is to carry out simulation work directly based on the three-dimensional model of the ship. These two methods are not very efficient. The first method takes a long time because of the two steps of design and simulation; the second method is even less efficient than the first re-modeling method because it requires a lot of pre-processing and simplification work.

[0004] Therefore, how to improve the efficiency of outfitting parts simulation evaluation is an urgent problem to be solved. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method and device for preparing simulation evaluation of ship outfitting parts based on a one-dimensional model, so as to solve the problem of low efficiency of the simulation evaluation link of outfitting parts in the prior art.

[0006] To achieve the above-mentioned purpose and other related purposes, the present invention provides a method for preparing simulation evaluation of ship outfitting based on a one-dimensional model, comprising the following steps: obtaining a three-dimensional model of the ship's outfitting; based on the three-dimensional model, determining the characteristic attributes, center line, boundary information and force information of the outfitting; based on the center line, creating a one-dimensional model of the outfitting; according to the characteristic attributes, the boundary information, the force information and the one-dimensional model, applying a preset mapping rule to determine the mapped one-dimensional model; the one-dimensional model is used to simulate and evaluate the outfitting.

[0007] In one embodiment of the present invention, the determining of boundary information and force information based on the three-dimensional model includes: based on the three-dimensional model, obtaining bracket information supporting the outfitting and equipment position information connected to the outfitting; determining the type of outfitting corresponding to the equipment according to the equipment position information, the type being constraint or load; when the type is constraint, determining the boundary information according to the bracket information and the type, the boundary information including the constraint degrees of freedom of the outfitting; when the type is load, determining the force information according to the equipment position information, the force information including the equivalent force of the load of the outfitting.

[0008] In one embodiment of the present invention, the characteristic attributes include cross-sectional information of the outfitting component and mechanical properties of the outfitting component material.

[0009] In one embodiment of the present invention, the mapping rule includes corresponding the characteristic attributes, the boundary information and the force information to the position of the center line of the outfitting part on the one-dimensional model in the form of labels.

[0010] In one embodiment of the present invention, before simulating and evaluating the outfitting according to the mapped one-dimensional model, it also includes: obtaining events that affect the outfitting based on preset influence rules; based on the events and the mapped one-dimensional model, applying the mapping rules to determine an updated one-dimensional model.

[0011] Correspondingly, the present invention provides a one-dimensional model-based ship outfitting simulation evaluation preparation device, comprising an acquisition module, used for acquiring the three-dimensional model of the ship's outfitting; a first determination module, used for determining the characteristic attributes, center line, boundary information and force information of the outfitting based on the three-dimensional model; a processing module, used for creating a one-dimensional model of the outfitting based on the center line; a second determination module, used for applying a preset mapping rule according to the characteristic attributes, the boundary information, the force information and the one-dimensional model to determine the mapped one-dimensional model; the one-dimensional model is used for simulation evaluation of the outfitting.

[0012] In one embodiment of the present invention, the first determination module is specifically used to: obtain the bracket information supporting the outfitting and the equipment position information connected to the outfitting based on the three-dimensional model; determine the type of outfitting corresponding to the equipment according to the equipment position information, and the type is constraint or load; when the type is constraint, determine the boundary information according to the bracket information and the type, and the boundary information includes the constraint degree of freedom of the outfitting; when the type is load, determine the force information according to the equipment position information, and the force information includes the equivalent force of the load of the outfitting.

[0013] In one embodiment of the present invention, the characteristic attributes include cross-sectional information of the outfitting component and mechanical properties of the outfitting component material.

[0014] The present invention provides a storage medium on which a computer program is stored. When the program is executed by a processor, the above-mentioned one-dimensional model-based ship outfitting simulation evaluation preparation method is implemented.

[0015] The present invention provides a simulation evaluation device, comprising a memory for storing a computer program; and a processor for running the computer program to implement the above-mentioned one-dimensional model-based ship outfitting simulation evaluation preparation method.

[0016] As described above, the method and device for preparing simulation evaluation of ship outfitting parts based on a one-dimensional model of the present invention have the following beneficial effects:

[0017] (1) Rapidly carry out simulation work by reducing the dimensionality of the three-dimensional model of the ship.

[0018] (2) Realize automatic extraction and mapping of information;

[0019] (3) All analysis information comes from the design model, which reduces manual operation and operational errors, allowing designers to focus more on design. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shown is a flow chart of a one-dimensional model-based ship outfitting simulation evaluation preparation method in one embodiment of the present invention.

[0021] Figure 2 The equipment type in one embodiment of the one-dimensional model-based ship outfitting simulation evaluation preparation method of the present invention is shown as a constraint.

[0022] Figure 3a The oblique view shows a load as the equipment type in one embodiment of the one-dimensional model-based ship outfitting simulation evaluation preparation method of the present invention.

[0023] Figure 3b A side view showing a device type of a load in one embodiment of the one-dimensional model-based ship outfitting simulation evaluation preparation method of the present invention.

[0024] Figure 4 Shown is a schematic structural diagram of a one-dimensional model-based ship outfitting simulation evaluation preparation device in one embodiment of the present invention.

[0025] Figure 5 Shown is a simulation evaluation device in one embodiment of a one-dimensional model-based ship outfitting simulation evaluation preparation device of the present invention.

[0026] Component number description

[0027] 41 Get Module

[0028] 42 First determination module

[0029] 43 Processing Module

[0030] 44 Second determination module

[0031] 51 Processor

[0032] 52 Memory DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] The method and device for preparing simulation evaluation of ship outfitting parts based on a one-dimensional model of the present invention can quickly carry out simulation work by reducing the dimension of the three-dimensional model of the ship; and realize automatic extraction and mapping of information; at the same time, since the analysis information comes from the design model, manual operation is weakened, the operation error rate is reduced, and designers can focus more on design.

[0036] like Figure 1 As shown, in this embodiment, the one-dimensional model-based ship outfitting simulation evaluation preparation method of the present invention includes the following steps:

[0037] Step S1, obtaining a three-dimensional model of a ship's outfitting parts.

[0038] Specifically, the outfitting of a ship is mainly composed of parts whose size in one direction is much larger than that in the other two directions. The professions involved in the outfitting include piping, air ducts, iron outfitting, interior decoration, etc. For example, the piping system and the profile structure base are obtained. The content of the piping system in the three-dimensional model includes the piping, brackets, and equipment connected to the piping. The embodiments of the present invention are specifically described by taking the piping system as an example, which will not be repeated below.

[0039] Step S2: Based on the three-dimensional model, determine the characteristic attributes, center line, boundary information and force information of the outfitting parts.

[0040] Specifically, the method for determining the characteristic attributes is to directly obtain the characteristic attributes of the outfitting parts based on the three-dimensional model. The characteristic attributes include the cross-sectional information of the outfitting parts and the mechanical properties of the outfitting parts materials. The cross-sectional information refers to the information of the cross section formed by the two smaller dimensions of the outfitting parts, including the inner and outer diameters of the circular tube, the wall thickness, the cross-sectional dimensions of the angle steel, etc.

[0041] The method for determining the center line is that the application software automatically extracts the length dimension information of the part in the three-dimensional model; based on the length dimension, the center line of the part is created, and the center line is the one-dimensional model of the part.

[0042] The method for determining boundary information and force information is to obtain the bracket information supporting the outfitting parts and the equipment position information connected to the outfitting parts based on the three-dimensional model; determine the type of outfitting parts corresponding to the equipment according to the equipment position information, and the type is constraint or load; when the type is constraint, determine the boundary information according to the bracket information and the type, and the boundary information includes the constraint degree of freedom of the outfitting parts; when the type is load, determine the force information according to the equipment position information, and the force information includes the equivalent force of the load of the outfitting parts.

[0043] More specifically, according to the equipment location information, the type of the equipment corresponding to the equipment is determined, and the type is constraint or load; Figure 2 As shown, in the diagram of the device type in this embodiment, the device connected to the pipeline is at the boundary position on the left and right sides of the pipeline; Figure 3a As shown, in this embodiment, the device type is an oblique view of a load, and as shown in FIG. Figure 3b As shown, in this embodiment, the device type is a side view of a load, and the device connected to the pipeline is located above the pipeline; when the device type is a constraint, the bracket and the device supporting the pipeline determine the boundary information of the pipeline according to a preset calculation rule, including the constraint degree of freedom of the corresponding pipeline; when the device type is a load, the force information of the pipeline is determined according to the contact load of the device above the pipeline, including the equivalent force of the load corresponding to the pipeline. Specifically, when determining the force information of the pipeline, the pressure information of the fluid inside the pipeline is also considered, wherein the bracket supporting the pipeline includes a fixed bracket, a sliding bracket, etc.; equipment such as a diesel engine, etc.

[0044] After obtaining the characteristic attributes, boundary information and force information of the pipeline, the pipeline system in the entire three-dimensional model is traversed in step S3, and a one-dimensional model of the outfitting is created based on the center line.

[0045] Specifically, after the center line of the part is created in step S2, the management system in the entire three-dimensional model is traversed to create the center line of the parts of all the management systems in the three-dimensional model, and then the center lines of all the created parts are integrated to obtain the overall one-dimensional model of the management system.

[0046] Step S4, applying a preset mapping rule according to the characteristic attributes, the boundary information, the force information and the one-dimensional model to determine a mapped one-dimensional model; the one-dimensional model is used to simulate and evaluate the outfitting.

[0047] Specifically, the mapping rule includes mapping the characteristic attributes, the boundary information, and the force information to the position of the center line of the outfitting part on the one-dimensional model in the form of labels. For example, after obtaining the characteristic attributes, boundary information, force information, and the overall one-dimensional model of the piping system according to the above steps, the characteristic attributes, boundary information, and force information of each part in the management system are marked at the position of the center line of the corresponding part on the one-dimensional model in the form of background labeling, so as to facilitate the call of the corresponding marking information in the subsequent simulation evaluation.

[0048] More specifically, before simulating and evaluating the outfitting according to the mapped one-dimensional model, the method further includes: obtaining events affecting the outfitting based on preset influence rules; and applying the mapping rules based on the events and the mapped one-dimensional model to determine an updated one-dimensional model. For example, in combination with the actual use scenario of the ship, such as vibration sound near the ship, water pressure inside the ship, etc., these events affecting the outfitting are mapped to the one-dimensional model according to the preset influence rules to obtain an updated and more accurate one-dimensional model.

[0049] Specifically, after obtaining a one-dimensional model according to the above steps, the one-dimensional model is generated into a simulation model and submitted to a professional analysis solver to perform structural simulation of the outfitting parts. The structural simulation includes static analysis, vibration analysis, and fatigue analysis. According to the simulation analysis results and in combination with relevant evaluation criteria, optimization suggestions are given for unreasonable design. The optimization suggestions include optimization of part cross-sectional dimensions and optimization of bracket layout. Designers can optimize the design of the ship's outfitting parts according to the optimization suggestions to obtain an optimized three-dimensional model, and create a one-dimensional model of the outfitting parts based on the three-dimensional model for further simulation and evaluation.

[0050] like Figure 4 As shown, in this embodiment, the one-dimensional model-based ship outfitting simulation evaluation preparation device of the present invention includes:

[0051] An acquisition module 41 is used to acquire a three-dimensional model of the ship's outfitting parts;

[0052] A first determination module 42 is used to determine characteristic attributes, center lines, boundary information and force information of the outfitting parts based on the three-dimensional model;

[0053] A processing module 43 is used to create a one-dimensional model of the outfitting part based on the center line;

[0054] The second determination module 44 is used to apply a preset mapping rule according to the characteristic attributes, the boundary information, the force information and the one-dimensional model to determine the mapped one-dimensional model; the one-dimensional model is used to simulate and evaluate the outfitting part.

[0055] The first determining module 42 is specifically configured to:

[0056] Based on the three-dimensional model, information of brackets supporting the outfitting parts and location information of equipment connected to the outfitting parts are obtained;

[0057] Determine the type of outfitting corresponding to the equipment according to the equipment position information, wherein the type is constraint or load;

[0058] When the type is constraint, the boundary information is determined according to the bracket information and the type, and the boundary information includes the constraint degree of freedom of the outfitting part;

[0059] When the type is load, the force information is determined according to the equipment position information, and the force information includes the equivalent force of the load of the outfitting part.

[0060] The characteristic attributes include cross-sectional information of the outfitting parts and mechanical properties of the outfitting parts materials.

[0061] The storage medium of the present invention stores a computer program, which, when executed by a processor, implements the above-mentioned one-dimensional model-based ship outfitting simulation evaluation preparation method.

[0062] like Figure 5 As shown, in this embodiment, the simulation evaluation device of the present invention includes: a processor 51 and a memory 52 .

[0063] The memory 52 is used to store computer programs.

[0064] The memory 52 includes: ROM, RAM, disk, USB flash drive, memory card or CD and other media that can store program codes.

[0065] The processor 51 is connected to the memory 52 and is used to execute the computer program stored in the memory 52 so that the simulation evaluation device executes the above-mentioned one-dimensional model-based ship outfitting simulation evaluation preparation method.

[0066] Preferably, the above-mentioned processor 51 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0067] In summary, the method and device for preparing simulation evaluation of ship outfitting parts based on one-dimensional model of the present invention can quickly carry out simulation work by reducing the dimension of the three-dimensional model of the ship; and realize automatic extraction and mapping of information; at the same time, since the analysis information comes from the design model, manual operation is weakened, the error rate of operation is reduced, and the designer can focus more on the design. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0068] 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 method for preparing simulation evaluation of ship outfitting parts based on a one-dimensional model, characterized in that: The simulation evaluation preparation method comprises the following steps: Obtain a three-dimensional model of the ship's outfitting; Based on the three-dimensional model, determining characteristic attributes, centerline, boundary information and force information of the outfitting parts; The characteristic attributes include: cross-sectional information of the outfitting parts and mechanical properties of the outfitting parts materials; the method for determining the center line is to automatically extract the length dimension information of the parts in the three-dimensional model by application software; and create the center line of the parts according to the length dimension; Wherein, the determining of the boundary information and the force information based on the three-dimensional model includes: based on the three-dimensional model, obtaining the bracket information supporting the outfitting and the equipment position information connected to the outfitting; according to the equipment position information, determining the type of the outfitting corresponding to the equipment, the type being constraint or load; when the type is constraint, determining the boundary information according to the bracket information and the type, the boundary information including the constraint degree of freedom of the outfitting; when the type is load, determining the force information according to the equipment position information, the force information including the equivalent force of the load of the outfitting; Based on the center line, creating a one-dimensional model of the outfitting; According to the characteristic attributes, the boundary information, the force information and the one-dimensional model, a preset mapping rule is applied to determine a mapped one-dimensional model; the one-dimensional model is used to simulate and evaluate the outfitting part.

2. The method according to claim 1, characterized in that The characteristic attributes include cross-sectional information of the outfitting parts and mechanical properties of the outfitting parts materials.

3. The method according to claim 1 or 2, characterized in that: The mapping rule includes corresponding the characteristic attributes, the boundary information and the force information to the position of the center line of the outfitting part on the one-dimensional model in the form of labels.

4. The method according to claim 1, characterized in that: Before simulating and evaluating the outfitting parts according to the mapped one-dimensional model, the method further includes: Based on a preset influencing rule, obtaining an event that affects the outfitting part; Based on the event and the mapped one-dimensional model, the mapping rule is applied to determine an updated one-dimensional model.

5. A one-dimensional model-based ship outfitting simulation evaluation preparation device, characterized in that: include: An acquisition module, used for acquiring a three-dimensional model of a ship's outfitting parts; The first determination module is used to determine the characteristic attributes, center line, boundary information and force information of the outfitting part based on the three-dimensional model, wherein the characteristic attributes include: cross-sectional information of the outfitting part and mechanical properties of the outfitting part material, and the method for determining the center line is that the application software automatically extracts the length dimension information of the part in the three-dimensional model; creates the center line of the part according to the length dimension; wherein the boundary information and force information are determined based on the three-dimensional model, including: based on the three-dimensional model, obtaining the bracket information supporting the outfitting part and the equipment position information connected to the outfitting part; according to the equipment position information, determining the type of the outfitting part corresponding to the equipment, the type being constraint or load; when the type is constraint, determining the boundary information according to the bracket information and the type, the boundary information including the constraint degree of freedom of the outfitting part; when the type is load, determining the force information according to the equipment position information, the force information including the equivalent force of the load of the outfitting part; A processing module, used for creating a one-dimensional model of the outfitting part based on the center line; The second determination module is used to apply a preset mapping rule according to the characteristic attributes, the boundary information, the force information and the one-dimensional model to determine the mapped one-dimensional model; the one-dimensional model is used to simulate and evaluate the outfitting parts.

6. The device according to claim 5, characterized in that The characteristic attributes include cross-sectional information of the outfitting parts and mechanical properties of the outfitting parts materials.

7. A storage medium storing program instructions, wherein: When the program instructions are executed, the steps of the method for preparing a simulation evaluation of a ship outfitting part based on a one-dimensional model as described in any one of claims 1 to 4 are implemented.

8. A simulation evaluation device, characterized in that: It comprises a memory for storing a computer program; and a processor for running the computer program to implement the steps of the method for preparing a simulation evaluation of a ship outfitting based on a one-dimensional model as described in any one of claims 1 to 4.

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