KR101807585B1 - Apparatus and Method for designing automation using FEM - Google Patents

Abstract

The present invention provides a computer-readable recording medium having a communication unit for receiving a 2D drawing file from a drawing generating apparatus, a modeling unit for extracting modeling parameters including plane information in a part of input 2D drawing files, And a control unit for generating a 3D analysis modeling file by applying additional parameters inputted from the extracted modeling parameters and calculating a result.

Description

Technical Field [0001] The present invention relates to a design automation apparatus and method using finite element analysis,

The present invention provides a computer-readable recording medium having a communication unit for receiving a 2D drawing file from a drawing generating apparatus, a modeling unit for extracting modeling parameters including plane information in a part of input 2D drawing files, And a control unit for generating a 3D analysis modeling file by applying additional parameters inputted from the extracted modeling parameters and calculating a result.

With the development of computers and the development of software technologies and theories, the use of computers in various fields is increasing. In particular, the use of computers has been amplified in the field of construction and mechanical design, and efficient operation is possible due to the drawing of drawings or the automation of design schemes and the emergence of CAD systems.

In the manufacture of machines, appliances or products, modeling refers to the creation of three-dimensional shapes through the virtual space inside a computer. Particularly, a method of creating a model on a screen using a computer is described, and the shape of an object or the spatial relationship between objects can be effectively displayed. When modeling, it is used to create screen displays of various tools, buildings, automobiles, and objects using the most commonly used CAD programs.

At this time, a finite element method is used for numerical analysis of modeling data. Finite Elements Method (FEM) is a numerical calculation method that divides a continuum structure into finite number of elements and calculates each region. In particular, the finite element method is a numerical approximation to a problem which is difficult to obtain an accurate theoretical solution, and a complex model can be approximated. Therefore, even a model having an unspecified shape such as a generator, a large machine, a generator stator, and a tube can be effectively analyzed using a finite element method.

Referring to FIG. 1, when the modeling data 110 is performed through a finite element analysis, a result 120 for a detailed structure can be derived by dividing the modeling data 110 into elements of a minute unit and performing calculation for each area have.

However, in the case of such a finite element method, a high-performance computer is required because a large number of matrix operations are required, and there is a problem that an excessive amount of time is required to perform a finite element analysis. Also, there is a problem that it is difficult to change a shape to make a finite element analysis by making a finite element analysis model based on the determined 3D modeling, and to perform modeling from the beginning again or to perform finite element analysis many times. This is because a lot of data must be analyzed after the pre-processing, and it takes time for complication.

In addition, the finite element analysis can not be performed until the final dimension of the object to be designed is determined, so that it is often necessary to redesign the stator of the generator according to the late result performed at the final stage of the basic design. Therefore, it is impossible to perform the optimization design using the finite element analysis, and there is a problem that it takes one month to two months to perform one case.

The present invention provides a design automation apparatus and method for performing finite element analysis by separately receiving a modeling parameter and an additional parameter in order to solve the problem that a conventional finite element analysis takes a long time as described above The purpose.

In addition, in the case of developing and designing a complicated machine such as a generator, the present invention improves the ineffective design process by quickly and accurately grasping whether the dynamic reliability of the model is ensured, Which can be confirmed by a finite element analysis method.

The technical problem to be solved by the present invention is not limited to the above-mentioned technical problems, and various technical problems can be included within the scope of what is well known to a person skilled in the art from the following description.

According to an aspect of the present invention, there is provided a design automation apparatus using finite element analysis, comprising: a communication unit for receiving a 2D drawing file from a drawing generation apparatus; An additional input unit for receiving additional parameters other than the modeling parameters extracted in the 2D drawing file, a 3D analysis modeling file generated by applying the input additional parameters in the extracted modeling parameters, And a control unit for calculating a result.

In addition, a design automation apparatus using finite element analysis according to an embodiment of the present invention is characterized in that the communication unit receives a 2D drawing CAD file in IGES format.

In addition, the design automation apparatus using the finite element analysis according to an embodiment of the present invention may further include a predicted analysis time or predicted data processing time of the 3D modeling method generated through the input of the 2D drawing file and the received additional parameters, And transmits the predicted data to the cluster server when the expected interpretation time or the predicted data processing is greater than a predetermined value.

In this case, the design automation apparatus using finite element analysis according to an embodiment of the present invention may be configured such that the cluster server receives the 2D drawing file, extracts modeling parameters, receives additional parameters, And a parameter is applied to generate a result file.

The design automation apparatus using the finite element analysis according to an embodiment of the present invention is characterized by comparing the 2D drawing file with a previously stored parameter database to extract a modeling parameter having a high degree of similarity to the 2D drawing file .

In addition, the design automation apparatus using the finite element analysis according to an embodiment of the present invention is characterized in that the modeling unit extracts a modeling parameter, and then calculates a range requiring additional parameters in the modeling parameter.

In this case, in the design automation apparatus using the finite element analysis according to an embodiment of the present invention, the modeling unit automatically inputs the modeling parameters into a spreadsheet program, and additional parameters are required according to predetermined formulas of the spreadsheet program And a range is calculated.

Further, in the design automation apparatus using the finite element analysis according to an embodiment of the present invention, the modeling unit extracts the modeling parameters and then compares the modeling parameters with the 2D drawing file to derive additional parameters required in the parameter database according to the degree of similarity. .

In addition, a design automation apparatus using finite element analysis according to an embodiment of the present invention is characterized in that, when the default input mode is selected, a default additional parameter is received from a pre-stored parameter database.

In addition, the design automation apparatus using the finite element analysis according to an embodiment of the present invention is characterized in that when the control unit generates an error in the input of the 2D drawing file, an error message is output.

In addition, the design automation apparatus using the finite element analysis according to an embodiment of the present invention further includes a finite element analysis unit for performing a mesh operation on the result file to extract a finite element model.

Meanwhile, a design automation method using a finite element analysis according to an exemplary embodiment of the present invention includes: (a) receiving a 2D drawing file from a drawing generating apparatus; (b) extracting a modeling parameter including plane information in a part of the input 2D drawing files, (c) receiving additional parameters other than the modeling parameters extracted from the 2D drawing file, (d) Generating the 3D analysis modeling file by applying the input additional parameter in the modeling parameter, and calculating the result.

The design automation apparatus and method using the finite element analysis according to the present invention is characterized in that a 2D drawing file is input and a modeling parameter is extracted and additional parameters to be added to the modeling parameter are input separately to generate a result file, And the remaining details are formed through additional parameters to ensure both accuracy and speed.

In addition, the design automation apparatus and method using the finite element analysis of the present invention can perform analysis by forming FEM analysis models of various cases flexibly based on parameters and partial component CAD shapes.

In addition, the design automation apparatus and method using the finite element analysis according to the present invention perform FEM analysis through an automated method at the beginning of the design, so that optimal design values can be determined.

In addition, since the design automation apparatus and method using the finite element analysis of the present invention can identify various cases in the design and development stages, it is possible to generate a result file by modifying additional parameters without redesigning at the time of final design, Effective design automation is possible.

In addition, while the analysis time of the conventional design method takes at least one month to two months, the design automation apparatus and method using the finite element analysis of the present invention review and analyze only the reduced parameters, , The time required is drastically reduced, and analysis can be performed in only about two days.

In addition, the design automation apparatus and method using the finite element analysis of the present invention can reflect a specific and accurate shape by minimizing additional parameters when an automation program is implemented, and accept 2D drawing files created by CAD as partial inputs Can realize an efficient program.

Further, the design automation apparatus and method using the finite element analysis of the present invention can develop and design a mechanical structure having reliability with dynamic stability, and can shorten the basic design period. In addition, accurate design analysis values can be obtained by maximally reflecting the shape expressed in the 2D drawing file without simplifying the shape of the object to be analyzed.

Also, the design automation apparatus and method using the finite element analysis of the present invention can perform optimal design by quickly and accurately examining the dynamic characteristics of the model for a plurality of cases through a finite element analysis (FEM).

1 is an exemplary view showing a conventional finite element analysis.
2 is a block diagram showing a design automation apparatus using the finite element analysis of the present invention.
FIGS. 3 and 4 are diagrams illustrating an analysis method of a design automation apparatus using the finite element analysis of the present invention.
5 is a flowchart showing a design automation method using the finite element analysis of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a design automation apparatus and method using a finite element analysis according to the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the scope of the present invention. In addition, the matters described in the attached drawings may be different from those actually implemented by the schematic drawings to easily describe the embodiments of the present invention.

In the meantime, each constituent unit described below is only an example for implementing the present invention. Thus, in other implementations of the present invention, other components may be used without departing from the spirit and scope of the present invention.

Also, the expression " comprising " is intended to merely denote that such elements are present as an expression of " open ", and should not be understood to exclude additional elements.

Also, the expressions such as 'first, second', etc. are used only to distinguish between plural configurations, and do not limit the order or other features among the configurations.

In the description of the embodiments, it is to be understood that each layer (film), area, pattern or structure may be referred to as being "on" or "under / under" Quot; includes all that is formed directly or through another layer. The criteria for top / bottom or bottom / bottom of each layer are described with reference to the drawings.

 When a part is "connected" to another part, it includes not only "directly connected" but also "indirectly connected" with another part in between. Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

2 is a block diagram showing a design automation apparatus using the finite element analysis of the present invention.

2, the design automation apparatus 200 using the finite element analysis according to the present invention includes a communication unit 210, a modeling unit 220, an additional input unit 230, a control unit 240, a finite element analysis unit 250 ).

The design automation device 200 using the finite element analysis can be implemented as a commonly used electronic device that can be used for modeling and finite element analysis, such as a computing device, a PDA, a notebook, a smart terminal, have.

The communication unit 210 can receive a 2D drawing file from the drawing generating apparatus. In this case, the communication unit can receive the 2D drawing file by wire or wireless, and the input destination may be the Internet home page of the company using the design automation device, a program for generating the 2D drawing file in the design automation device, Drawing file can be input.

The drawing generating apparatus can generate a drawing file by a CAD or the like which will be described later. The drawing generating apparatus can generate a drawing file directly by using a program such as CAD, And transmitted to the design automation apparatus of the present invention.

In addition, the communication unit of the present invention can receive a 2D drawing file as a CAD file in IGES format, but it is not limited to CAD, and a 2D drawing file may be a general CAD program capable of creating 2D drawings such as AutoCAD, Eagle / Acropolis, The generated 2D drawing file can be used. The 2D drawing file can be implemented with data including the shape and size of the object to be designed, bending, and the like.

The modeling unit 220 extracts modeling parameters including plane information from a part of the input 2D drawing files. At this time, the modeling parameters may be extracted in the same form as the 2D drawing file such as IGES or STEP, or may be extracted in a separate program format in a format necessary for the design.

More specifically, the modeling unit extracts a portion corresponding to the < frame > part of the 2D drawing file as a modeling parameter. At this time, the modeling parameters can be extracted as much as possible as much as can be extracted from the 2D drawing file, or extracted as much as the pre-stored percentage or the pre-stored resolution and image size. In particular, conventionally, all parts of the 2D drawing file are modeled, and the finite element analysis takes time exponentially. However, since the modeling part of the present invention extracts the modeling parameters only to the optimum degree, More detailed design modeling can be implemented.

Referring to FIG. 3, an embodiment for extracting modeling parameters from a 2D drawing file of a design automation apparatus using the finite element analysis of the present invention can be confirmed. A 2D drawing file 310 of a mechanism (ex) to be designed is generated, and a 2D drawing file is input to a design automation apparatus using the finite element analysis of the present invention. Then, the design automation apparatus extracts an optimal modeling parameter 320 that can effectively generate a frame from the 2D drawing file 310. In this case, the modeling parameters are extracted from the 2D drawing files by selecting only a portion that is advantageous for the design speed and optimization, and the skeleton portion of the 3D analysis modeling file is taken as shown in FIG.

In this case, when the modeling parameter is extracted, the database is linked to a database (not shown) further included in the design automation device using the finite element analysis of the present invention or a database connected to the external device, After comparing 2D drawing files, modeling parameters can be extracted. When a similar machine or apparatus is designed, since the corresponding data or parameters are accumulated in the parameter database, the inputted 2D drawing file is compared with the previously stored parameter data, and then the data having the highest similarity among the plurality of parameter data is selected as the modeling parameter And extracted.

For example, when designing a generator, corresponding modeling parameters are stored in the parameter database for various types of generator such as a DC generator, an AC generator, a synchronous generator, an induction generator, and a turbine generator. After receiving the 2D drawing file for the generator, the modeling unit of the present invention determines a modeling parameter (e.g., turbine generator modeling parameter) that is most similar to the inputted generator modeling file and extracts the corresponding modeling parameter .

Further, the design automation apparatus using the finite element analysis of the present invention may designate a part of an object to be designed and extract modeling parameters for a designated part. After receiving the 3D modeling parameters, if the designer or the administrator sets the corresponding modeling parameters in order to save the time and resources for extracting the modeling parameters, the modeling parameters at that position are extracted and the additional parameters are applied, Lt; / RTI &gt;

At this time, a part of the object to be designed can be designated, but the optimal range of the modeling parameter to be extracted may be calculated according to the input 2D drawing file and the pre-stored database. For each part of the object to be designed, input condition and maximum / minimum stress occurrence point and value, and input image and recommended frequency (Hz) of analysis result of all modes. In addition, the optimal modeling parameter range is extracted through various measurement values such as image, result and graph of the generator point, acceleration, displacement, hardness, and dynamic stiffness. .

For example, when designing a turbine generator, the designer or manager can choose which component of the turbine generator to configure. When a frame and a core are selected from the generator, only the frame and the core portion of the 2D drawing file are extracted by the modeling parameter, and the generator and the frame other than the core can be designed by applying additional parameters.

Also, input the 2D drawing file for the turbine generator and calculate the optimal modeling parameters to extract the modeling parameters for the frame, core, foot, and cover of the turbine generator. The designer or manager can check the optimal modeling parameters, extract only the necessary parts, and then proceed with detailed modeling with additional parameters.

The parameter of the 2D drawing corresponds to the object or the frame of the machine to be designed. However, since the object is largely picked up and only the shape is extracted as parameters, additional parameters indicating only the detailed characteristics of the object to be designed are applied, . In this case, the additional parameter may vary depending on the performance of the object to be designed, the place of application, the object of application, the place of use, and the like, and the conventional design automation device uses the finite element method There is a problem that the calculation time and resources are increased exponentially. The design automation apparatus of the present invention can separate the parameter input from the 2D drawing and the additional parameter input and effectively process each data, thereby realizing efficient design automation.

The design automation apparatus using the finite element analysis of the present invention can receive additional parameters except the modeling parameters extracted from the 2D drawing file through the additional input unit 230. [ In this case, when the additional parameter itself is calculated for efficient additional parameter input, the modeling parameter may be extracted, and then the range required for the additional parameter may be calculated in the modeling parameter. Since the additional parameter forms the shape of the 2D drawing file as a modeling parameter and then fulfills the remaining minute portion, the range of the range in which the optimum additional parameter is required is calculated so as to satisfy both the accuracy and the calculation speed , Additional parameters can be input or calculated.

At this time, the modeling parameter is automatically input to the spreadsheet program, and the range requiring the additional parameter can be calculated according to the predetermined formula of the spreadsheet program.

For example, the design automation apparatus using the finite element analysis of the present invention inputs a CAD file, applies it to ANSYS MAPDL, extracts a variable from a file to be created, and applies it to an Excel file. Next, it is used to set the maximum value and the minimum value of the input variable by using the variables extracted from the CAD file. The manager or the designer calculates the degree of the additional parameter necessary for the modeling parameter according to the preset Excel file.

Further, the design automation apparatus using the finite element analysis of the present invention may allow the user or the manager to directly input additional parameters, analyze the corresponding 2D drawing file in the previously stored parameter database, recommend the most suitable additional parameter, Any of the default data can be recommended. Thus, setting the modeling parameters (bones) and additional parameters enables fast and efficient design automation.

In addition, the design automation apparatus using the finite element analysis of the present invention can extract the modeling parameters and then compute the additional parameters required in the parameter database according to the degree of similarity by comparing with the 2D drawing file. Since the additional parameter corresponds to the design object that is the same as the modeling parameter, it is possible to design and model the detailed part by specifying additional parameters of the stored database after the modeling parameter is specified.

For example, in the case of designing a generator, a 3D analysis modeling operation is performed after extracting a parameter through a 2D drawing input only to a frame and a core portion, and the design automation apparatus of the present invention includes a foot, a skid, Set the end part such as the dome as an additional parameter. Next, additional parameters corresponding to the foot, skid, and dome of the generator are retrieved from the pre-stored parameter database, and additional parameters suitable for the generator (alternator) are calculated according to the degree of similarity.

In addition, the design automation apparatus using the finite element analysis of the present invention can set a default mode and receive a default additional parameter from a pre-stored parameter database when the default mode is selected. At this time, the default additional parameter corresponds to a predetermined default additional parameter according to the type of the corresponding 2D drawing data. For example, when designing an alternator, the foot and cover can be set as default additional parameters, and by setting the default mode, the default additional parameters for the foot and cover can be automatically combined into the modeling parameters. This default mode is advantageous for quick analysis and calculation, and enables efficient design automation.

Therefore, the design automation apparatus using the finite element analysis of the present invention minimizes the input parameters and can efficiently apply the modeling parameters and the additional parameters, thereby increasing the usability. In addition, it can cope with various types of section plates and can cope with all types of spring bar constructions. In addition, it can cope with complicated ventilation shapes and cutout shapes. On the other hand, it can be efficiently used for modularization of a design apparatus.

The control unit 240 applies the additional parameters inputted from the extracted modeling parameters to generate a result file. The modeling parameters and the additional parameters generated by the modeling unit and the additional input unit may be combined into one result file by the control unit, and the control unit may provide the result file to the user and the manager through a separate output device.

At this time, if an error occurs in the input of the 2D drawing file, the control unit outputs an error message. In the case where the format, size, and shape of the 2D drawing file itself are input in the state where the error occurs, an error may also occur in extracting the modeling parameter or the additional parameter. Therefore, the control unit checks the integrity of the corresponding 2D drawing file .

The finite element analysis unit 250 can perform a mesh operation on the result file to extract the finite element model.

Meanwhile, the design automation device using the finite element analysis of the present invention may be implemented in one computing device or may be implemented by transmitting / receiving data to / from a computing device composed of different hardware through wired / wireless communication. More specifically, the components of the communication unit, the modeling unit, the additional input unit, the control unit, and the finite element analysis unit of the present invention may be implemented by different hardware, or may be integrated by hardware.

In addition, the design automation apparatus using the finite element analysis of the present invention can be implemented in a single computing device depending on the complexity and speed of analysis, or may be implemented while transmitting and receiving data to and from a separate cluster server.

For example, the design automation apparatus using the finite element analysis of the present invention calculates a predicted analysis time or an expected data processing process of the input 2D drawing file, , It can be transmitted to the cluster server. It is most desirable if the design automation device itself can perform the analysis immediately, but because it is difficult for one computing device to perform all calculations when designing a large machine or when designing several machines at once, And the design can be carried out.

At this time, the cluster server receives the 2D drawing file, extracts the modeling parameters, receives the additional parameters, applies the additional parameters to the extracted modeling parameters, and generates a 3D modeling file to calculate the result.

4 is an exemplary view showing an analysis method of a design automation apparatus using the finite element analysis of the present invention.

Referring to FIG. 4, a method of designing a generator through the design automation apparatus of the present invention can be confirmed. First, the 2D drawing file of the generator is input, and the modeling parameters are extracted. The design automation apparatus of the present invention extracts a section of the section plate 311, the full frame assembly 312, the cover 313, and the dome 314 with modeling parameters and combines the corresponding modeling parameters to implement (330). Then, the generator can be designed through the final result file 340, in which the details other than the remaining modeling parameters are implemented as additional parameters, and the additional parameters are combined with the modeling parameters.

5 is a flowchart showing a design automation method using the finite element analysis of the present invention.

Referring to FIG. 5, a method for automating design using finite element analysis according to the present invention includes: (a) receiving a 2D drawing file; (b) inputting a modeling parameter (C) extracting modeling parameters extracted from the 2D drawing file and receiving additional parameters, (d) generating a result file by applying the input additional parameters in the extracted modeling parameters, and . &Lt; / RTI &gt;

Particularly, in the case of implementing the design automation method using the finite element analysis of the present invention, it can be implemented by applying all the various embodiments applied to the design automation apparatus using the above-described finite element analysis.

The embodiments of the present invention described above are disclosed for the purpose of illustration, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention.

110: Conventional 2D drawing file
120: Conventional finite element analysis model
200: Design automation device using finite element analysis of the present invention
210:
220: Modeling unit
230: Additional input
240:
250: finite element analysis section
310: 2D drawing file of the present invention
311, 312, 313, 314: The modeling parameters of the present invention
320: Modeling parameters of the present invention
330: Additional parameters of the present invention
340: Result file of the present invention

Claims (12)

A communication unit for receiving a 2D drawing file from the drawing generating apparatus;
A modeling unit for extracting modeling parameters including surface information in a part of the input 2D drawing files;
An additional input unit for receiving additional parameters other than the modeling parameters extracted from the 2D drawing file;
A controller for generating a 3D analysis modeling result file by applying the input additional parameters to the extracted modeling parameters;
Lt; / RTI &gt;
Wherein the modeling parameters are extracted from the 2D drawing file by a percentage corresponding to a pre-stored percentage or a pre-stored resolution and an image degree.
The method according to claim 1,
Wherein,
A design automation device using finite element analysis, characterized by receiving a 2D drawing CAD file in IGES format.
A communication unit for receiving a 2D drawing file from the drawing generating apparatus;
A modeling unit for extracting modeling parameters including surface information in a part of the input 2D drawing files;
An additional input unit for receiving additional parameters other than the modeling parameters extracted from the 2D drawing file;
A controller for generating a 3D analysis modeling result file by applying the input additional parameters to the extracted modeling parameters;
Lt; / RTI &gt;
The modeling unit,
Calculating a predicted analysis time or a predicted data processing process of the 3D modeling method generated through the inputted 2D drawing file and the received additional parameters and, if the predicted analysis time or the predicted data processing process is equal to or greater than a predetermined value, Wherein the first and second control signals are transmitted to the first and second sensors.
The method of claim 3,
The cluster server includes:
Receiving the 2D drawing file, extracting modeling parameters, receiving additional parameters, and applying the additional parameters to the extracted modeling parameters to generate a result file.
The method according to claim 1,
And comparing the 2D drawing file with a previously stored parameter database to extract a modeling parameter having a high degree of similarity to the 2D drawing file.
The method according to claim 1,
The modeling unit,
And extracting the modeling parameter, and calculating a range in which the additional parameter is required for the modeling parameter.
The method according to claim 6,
The modeling unit,
Wherein the modeling parameter is automatically input to a spreadsheet program, and a range requiring additional parameters is calculated according to a predetermined formula of the spreadsheet program.
The method according to claim 1,
The modeling unit,
Extracting modeling parameters, comparing the modeling parameters with the 2D drawing file, and deriving additional parameters required in the parameter database according to the degree of similarity.
The method according to claim 1,
Wherein the additional input unit comprises:
And a default additional parameter is input in a pre-stored parameter database when the default mode is selected.
The method according to claim 1,
Wherein,
And outputting an error message when an error occurs in the input of the 2D drawing file.
The method according to claim 1,
A finite element analysis unit for performing a mesh operation on the result file to extract a finite element model;
A design automation device using a finite element analysis that further includes a finite element analysis.
(a) receiving a 2D drawing file from a drawing generating apparatus;
(b) extracting a modeling parameter including plane information in a part of the input 2D drawing file;
(c) receiving additional parameters other than the modeling parameters extracted from the 2D drawing file;
(c-1) calculating a predicted analysis time or a predicted data processing process of the 3D modeling method generated through the inputted 2D drawing file and the received additional parameters, and if the predicted analysis time or the predicted data processing process has a predetermined value Transmitting to the cluster server;
(d) generating a 3D analysis modeling result file by applying the input additional parameters in the extracted modeling parameters;
Computational Method Using Finite Element Analysis of Design Automation Device Including.

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