CN116775097B - Model component management and simulation method and system - Google Patents
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Abstract
The invention relates to a management and simulation method and system of a model component, wherein the management method comprises the following steps: 1) Constructing a linear table which comprises a port linear table and a plurality of grouping component linear tables, wherein the port linear table is used for storing relevant data information of all ports, and the grouping component linear tables are respectively used for storing relevant data information of all components belonging to one group; 2) Assigning material properties to all components belonging to a group stored in the group component linear table; 3) All ports stored therein are given priority in the port linear table and all components stored therein are given priority in the packet component linear table according to material properties, the priority of the ports being greater than the priority of the metallic material components and the priority of the metallic material components being greater than the priority of the non-metallic material components. The method can solve the problems that the model processing steps are complicated and the capability of processing material conflicts is limited when the existing CAE software simulates a complex model.
Description
Technical Field
The invention belongs to the technical field of computer application, and relates to a method and a system for managing and simulating a model component.
Background
CAE (Computer Aided Engineering) is an approximate numerical analysis method for solving problems of complex engineering and structural strength, rigidity, buckling stability, dynamic response, heat conduction, three-dimensional multi-body contact, elastoplasticity and other mechanical and electromagnetic field distribution, voltage and current distribution, radar scattering performance and other electromagnetic performance analysis and calculation, structural performance optimization design and the like by using computer assistance. The method is an indispensable numerical calculation tool in engineering and product structure analysis (such as aviation, aerospace, machinery, civil structure and other fields), and is an important means for analyzing various problems.
When the existing CAE software simulates the intersecting models of different materials, the models usually need to be preprocessed to normally simulate, otherwise, a series of problems caused by overlapping materials can occur. For example, for microstrip to stripline device models, where there are some copper pillars as wires and grounds, there are collisions between model components penetrating several layers of medium in between, i.e. different materials. If the calculation is directly performed by using the model without any processing, the calculation result may be wrong, and even the calculation cannot be completed.
With such problems, conventional treatments include: 1. performing model processing by using Boolean operation, eliminating a dielectric material model at the overlapped part, and reserving a conductor material model; 2. during processing of the model, the conductive material component is overlaid with the dielectric material component.
Among these modes of performing model processing using boolean operations are manual selection of a model within CAE software for boolean operations and external software for boolean operations. Currently, the main stream CAE software in the market has a Boolean operation function, so that the commercial CAE software adopts a mode of Boolean operation in the software.
Some more fully functional CAE software generally includes a manner of covering a conductive material component with a dielectric material component, for example, the Set Material Override function of ANSYS, and can cover a dielectric material with a metal material during the pre-processing meshing process of the model, thereby achieving the purpose of reducing the operation steps of the model.
However, in either of the processing methods, there are the following drawbacks:
1. when simulating complex models with different materials, the model processing steps are complicated, and particularly, the model of the complex circuit board is involved.
2. Only the collisions between conductors and media can be handled, but the material collisions between different kinds of conductors, different kinds of media, ports and conductors, ports and media cannot be handled.
Therefore, in view of the above-mentioned drawbacks of the prior art, there is a need to develop a method and a system for managing and simulating model components, so as to reduce the steps of model processing during simulation.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method and a system for managing and simulating a model component, which can solve the problems of complicated model processing steps and limited capability of processing material conflicts when the existing CAE software simulates a complex model.
In order to achieve the above object, the present invention provides the following technical solutions:
a method of managing a model component, comprising the steps of:
1) Constructing a linear table, wherein the linear table comprises a port linear table and a plurality of grouping component linear tables, the port linear table is used for storing relevant data information of all ports of a model, each component of the model is divided into a plurality of groups according to materials, and the grouping component linear tables are respectively used for storing relevant data information of all components belonging to one group;
2) Assigning material properties to all components belonging to a group stored in the group component linear table;
3) And giving priority to all ports stored in the port linear table and giving priority to all components stored in the grouping component linear table according to the material attribute, wherein the priority of the ports is higher than that of the metal material components and the priority of the metal material components is higher than that of the nonmetal material components.
Preferably, the step 2) specifically includes:
2.1 Storing component material property pointers in the grouped component linear table;
2.2 Constructing a materials index summary table, storing materials classification pointers for various materials classifications in the materials index summary table and associating the grouped components linear table with the materials index summary table by the components materials attribute pointers;
2.3 Constructing a plurality of material classification tables, respectively storing material type pointers of corresponding material classifications in each material classification table, and associating the material index summary table with the material classification table through the material classification pointers;
2.4 Building a plurality of material category tables, storing specific material names of corresponding material categories in each material category table, and associating the material classification table with the material category table through the material category pointer.
There is also provided a management system of a model component, characterized by comprising:
the linear table comprises a port linear table and a plurality of grouping component linear tables, wherein the port linear table is used for storing relevant data information of all ports of a model, each component of the model is divided into a plurality of groups according to materials, and the grouping component linear tables are respectively used for storing relevant data information of all components belonging to one group;
a material attribute giving module for giving material attribute to all components belonging to one group stored in the group component linear table;
and the priority giving module is used for giving priority to all the ports stored in the port linear table and giving priority to all the components stored in the grouping component linear table according to the material attribute, wherein the priority of the ports is greater than that of the metal material components and the priority of the metal material components is greater than that of the nonmetal material components.
Preferably, the group component linear table stores component material attribute pointers therein; and, the system further comprises:
a materials index summary table in which materials classification pointers for various materials classifications are stored and the grouping component linear table is associated with the materials index summary table by the component materials attribute pointers;
a plurality of material classification tables, each material classification table storing a material type pointer of a corresponding material classification and associating the material index summary table with the material classification table through the material classification pointer;
and a plurality of material type tables, wherein each material type table stores specific material names of corresponding material types and associates the material classification table with the material type table through the material type pointer.
In addition, the invention also provides a simulation method of the model component, which is characterized by comprising the following steps:
1) Constructing a linear table, wherein the linear table comprises a port linear table and a plurality of grouping component linear tables, the port linear table is used for storing relevant data information of all ports of a model, each component of the model is divided into a plurality of groups according to materials, and the grouping component linear tables are respectively used for storing relevant data information of all components belonging to one group;
2) Assigning material properties to all components stored therein that belong to the same group in the grouped component linear table;
3) Giving priority to all ports stored in the port linear table and giving priority to all components stored in the grouping component linear table according to the material attribute, wherein the priority of the ports is greater than that of the metal material components and the priority of the metal material components is greater than that of the nonmetal material components;
4) Performing simulation setting;
5) Performing simulation pretreatment;
6) And performing simulation calculation.
Preferably, the step 5) specifically includes:
5.1 Normalizing the priorities of all ports and components;
5.2 And reorganizing the model according to the priority after normalization treatment, wherein the material property of the intersection part of two components with different material properties is taken as the material property of the component with higher priority.
Preferably, the step 5) further includes:
5.3 Grid-discretizing the reconstructed model.
Preferably, the step 4) specifically includes:
4.1 Adding a simulation component, the simulation component comprising a port, a boundary condition, and a field monitor;
4.2 Setting simulation parameters, wherein the simulation parameters comprise electromagnetic parameters, thermal parameters, grid discrete parameters, excitation signal parameters and simulation ending criterion parameters.
Finally, there is also provided a simulation system of a model component, characterized by comprising:
the linear table comprises a port linear table and a plurality of grouping component linear tables, wherein the port linear table is used for storing relevant data information of all ports of a model, each component of the model is divided into a plurality of groups according to materials, and the grouping component linear tables are respectively used for storing relevant data information of all components belonging to one group;
a material attribute giving module for giving material attribute to all components belonging to one group stored in the group component linear table;
a priority giving module, configured to give priority to all ports stored in the port linear table and give priority to all components stored in the packet component linear table according to the material attribute, where the priority of a port is greater than the priority of a metallic material component and the priority of a metallic material component is greater than the priority of a non-metallic material component;
the simulation setting module is used for performing simulation setting;
the simulation preprocessing module is used for performing simulation preprocessing;
and the simulation calculation module is used for performing simulation calculation.
Preferably, the simulation preprocessing module includes:
the normalization processing sub-module is used for normalizing the priorities of all ports and components;
and the model reorganization submodule is used for reorganizing the model according to the priority after normalization processing, wherein the material property of the intersection part of two components with different material properties is taken as the material property of the component with higher priority.
Compared with the prior art, the method and the system for managing and simulating the model component have one or more of the following beneficial technical effects:
1. according to the invention, the ports, the metal material components and the nonmetal material components are provided with different priorities, and the intersecting parts of the different material components are recombined, so that the model can be prevented from being modified by frequent Boolean operation.
2. The invention may facilitate the management of priorities of different material components, e.g., priorities between conductor components and media components, priorities between ports and conductor components, priorities between ports and media components, and so forth.
Drawings
FIG. 1 illustrates a flow chart of a method of managing model components of the present invention.
Fig. 2 shows the structure of the port linear table of the present invention.
Fig. 3 shows the structure of the grouping component linear table of the present invention.
Fig. 4 shows a schematic representation of imparting material properties to a component in accordance with the present invention.
Fig. 5 shows a schematic diagram of the management system of the model component of the present invention.
FIG. 6 shows a flow chart of a simulation method of the model component of the present invention.
Fig. 7 shows a schematic diagram of an exemplary patch antenna model.
Fig. 8 shows a cross-sectional view of an exemplary microstrip to stripline circuit model.
FIG. 9 shows a schematic diagram of the architecture of a simulation system of the model assembly of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings, which are not to be construed as limiting the scope of the invention.
In order to overcome the defects of the prior art, the invention provides a method and a system for managing and simulating model components, which can avoid frequent Boolean operation to modify the model and can conveniently manage the priorities of different material components, such as the priorities between a conductor component and a medium component, the priorities between a port and a conductor component, the priorities between a port and a medium component and the like by setting different priorities for the port, the metal material component and the nonmetal material component and reorganizing the intersecting parts of the different material components.
FIG. 1 illustrates a flow chart of a method of managing model components of the present invention. As shown in fig. 1, the management method of the model component of the present invention includes the following steps:
1. a linear table is constructed.
The linear table includes a port linear table and a plurality of packet component linear tables. The port linear table is used for storing relevant data information of all ports of the model.
As shown in fig. 2, the port linear table includes a header, a footer, and data elements located between the header and the footer. Wherein, the head and tail are the same as the relevant definition of the head and tail of the linear table in the data structure discipline, and detailed description thereof is omitted herein. The data element is a set of data in the port linear table, is composed of a plurality of data items, and is a basic unit of data.
In the invention, the data elements of the port linear table are divided into two types, one type is used for storing the relevant data information of all ports of the model, and the other type is used for storing the relevant data information of one port; another type is used to store attribute information for all ports of the model. It should be specifically noted that the number of these two types of data elements is limited, and the number relationship of the two types of data elements are not limited. In the example shown in fig. 2, the port linear table has 200 data elements in total, wherein the data elements with sequence numbers 1-100 are stored in the relevant data information of each port, and the data elements with sequence numbers 101-200 are stored in the attribute information of the port.
Meanwhile, in the present invention, it is necessary to group the respective components of the model according to the materials of the components, for example, the metallic material components are grouped into one group, and the nonmetallic material components are grouped into one group. After grouping the individual components of the model, a separate group component linear table needs to be built for each group, e.g., a metallic component linear table and a non-metallic component linear table. The group component linear table is used for storing relevant data information of all components belonging to one group. For example, a linear table of metal components stores data information about all metal components.
Of course, it is also possible to divide the same material into groups for components of the same material, as desired. For example, for a metallic material component, it may be divided into a metallic material component group, and the like, and a grouping component linear table is constructed for each group. In this way, it is convenient to give different priorities to different groups of metallic material components.
As shown in fig. 3, the structure of the packet component linear table is the same as that of the port linear table, and for simplicity, a detailed description thereof will not be provided herein.
Likewise, the data elements of the group component linear table are also divided into two types, one type is used for storing the relevant data information of all components in the same group, and one data element stores the relevant data information of one component (including the position of each feature point of the component, whether the feature point is in a standard shape or not, etc.); another type is used to store attribute information for all components of the same group. Similarly, the number of the two types of data elements is limited, and the relation between the number and the number is not limited. In the example shown in fig. 3, the grouping component linear table has 200 data elements in total, wherein the data elements with sequence numbers 1-100 store the related data information of all components of the same group, and the data elements with sequence numbers 101-200 store the attribute information of all components of the same group.
Wherein the property information of all components of the same group stored in the group component linear table includes material properties (what materials are given to all components of the same group, such as air, vacuum, metal, etc.), default materials may be set to ideal conductors (Perfect Electrical Conductor, PEC), geometrical properties (such as height, direction of height, etc.), circuit properties (such as resistance, resistivity of all components of the same group), thermal properties (such as specific heat capacity of all components of the same group, thermal sink, etc.), grid properties (such as grid division of all components of the same group, such as edge and interior division, edge and fine interior division, edge division only, non-division of grids, interior division only, bounding box division only, etc.), custom properties (such as directly using script to control some properties of materials). Of course, other background properties of all components of the same group may also be included, e.g., interfaces may be opened, defining various properties including but not limited to those mentioned above.
In the present invention, other attribute information is stored directly in the data element, but the material attributes are not stored directly in the data element, but component material attribute pointers for all components of the same group are stored in the data element.
2. Imparting material properties.
In the present invention, it is necessary to assign material properties to all components belonging to one group stored therein in the grouped component linear table.
As described above, since the component material attribute pointers are stored in the group component linear table, the method for assigning material attributes to components in the present invention comprises the following steps:
first, a material index summary table is constructed.
As shown in fig. 4, the material index summary also includes a header, a footer, and data elements located between the header and the footer. Wherein, the head and tail are the same as the relevant definition of the head and tail of the linear table in the data structure discipline, and detailed description thereof is omitted herein. The data element is a set of data in the material index summary table, is composed of a plurality of data items, and is a basic unit of data. The exemplary material index total shown in fig. 4 has 100 data elements. Of course, in the present invention, the number of data elements in the material index summary table is not limited, and fig. 4 is only an example.
The group component linear table and the materials index table may be associated by the component materials properties pointer. For example, the 101 st data element of the group component linear table stores a component material attribute pointer g0_101, and the component material attribute pointer is pointed to m0_1 of the material index total table, so that the association between the material index total table and the group component linear table can be realized.
In the present invention, the location of the material attribute in the linear table of the grouping component is not limited, and the storage in the 101 st data element is merely an example.
In the present invention, the material index table stores material class pointers for various material classes. For example, in fig. 4, m0_1 represents a pointer of a dielectric material, m0_2 represents a pointer of a conductor material, m0_n represents a pointer of an absorber material, and so on. Thus, if g0_101 is pointed to m0_1, the material class that represents the material property selection of all components stored in the group component linear table is a dielectric material.
Next, a plurality of material classification tables are constructed.
In the present invention, the structure of the material classification table is the same as that of the material index summary table, and for simplicity, a detailed description thereof will not be provided herein.
Wherein a separate material class table needs to be built for each material class, e.g. for dielectric materials, conductor materials, absorber materials, etc. In fig. 4, only one material class table is shown for simplicity.
The materials index summary table may be associated with the materials classification table by the materials classification pointer. For example, the first data element of the material index total table stores a material classification pointer m0_1, and the material classification pointer m1_1 and m1_2 point to the material classification table, so that the material index total table and the material classification table can be associated.
In the present invention, the material class table stores material class pointers corresponding to material classes. For example, in fig. 4, the material classification table is a medium material table in which m1_1 represents pointers belonging to the aron class of medium materials, m1_2 represents pointers belonging to the Common class of medium materials, m1_n represents pointers belonging to the Rogers class of medium materials, and so on. Thus, if m0_1 points to m1_1 and m1_2, the material class chosen to represent the material properties of all components is a dielectric material, and the material classes chosen are Arlon-type and Common-type materials in the dielectric material.
Then, a plurality of material class tables are constructed.
In the present invention, the structure of the material type table is also the same as that of the material index table, and a detailed description thereof is not given here for the sake of simplicity.
Wherein a material class table needs to be built for each material class, for example, for the Arlon class material, the Common class material, the Rogers class material, and the like. In fig. 4, only one material type table is shown for simplicity.
The material class table may be associated with the material class table by the material class pointer. For example, in fig. 4, the first data element of the material class table stores a material class pointer m1_1, and points to m11_1 of the material class table, so that the material class table and the material class table can be associated.
In the present invention, each specific material name of the corresponding material class is stored in the material class table. For example, in fig. 4, the material type table is an Arlon-type material table in which m11_1 represents a specific material Arlon-25fr belonging to the Arlon-type material, m11_2 represents a specific material Arlon-25N belonging to the Arlon-type material, and so on. Thus, if m1_1 points to m11_1, the material class selected for the material properties of all components within the current group is the dielectric material, and the selected material class is the Arlon-type material in the dielectric material, while the specific material name of the selected material is Arlon-25FR in the Arlon-type material.
Thus, when the material properties of all components of the same group need to be changed, as shown in fig. 4, the material property pointers g0_101 of all components in the group component linear table are pointed to m0_1 in the material index table, which indicates that the selected material is a dielectric material; then, pointing the material classification pointer m0_1 in the material index table to m1_1 in the material classification table, wherein the selected material is an Arlon type material in a medium material; finally, the material class pointer m1_1 in the material class table is pointed to m11_1 in the material class table, which indicates that the specific material Arlon-25FR in the Arlon class material is selected. Thereby, the modification of the material properties of all components within the group of the unified group is completed.
Therefore, the invention can change the materials of all the components in the same group at one time by constructing the association relation between the components and the material parameters, and solves the problem that the process of endowing different components in the model with material properties in the existing CAE software is too complex. Meanwhile, the problems that the process of endowing different components in the model with material properties is too complex, the components with the same or similar characteristics cannot be uniformly operated, and the mapping relationship between different components and materials in the complex model is complex are solved.
3. Giving priority.
In the present invention, all ports and all components of the model may be given priority to facilitate simulation of the model.
Wherein all ports stored therein are given priority in the port linear table. For example, in the port linear table shown in fig. 2, a data element storing the port attribute, such as d101, is selected to store the priorities of all the ports, and thus, all the ports can be given priority.
In the present invention, the priority of the port is highest. For example, the port is prioritized 250.
At the same time, all components stored in the grouped component linear table need to be given priority according to the material properties.
For example, in the group component linear table shown in fig. 3, a data element storing component attributes, such as g0_102, is selected to store the priorities of all components, and thus, all components of the group may be given priority.
Wherein, when the component is endowed with the material, the priority thereof can be automatically stored in the group component linear table according to the attribute of the material endowed in the step two. For example, if the material attribute given in the second step is a metallic material, the priority of all the components stored in the group component linear table is 200; if the material property imparted in step two is a non-metallic material, such as a dielectric material, then the priority of all components stored in the group component linear table is 100.
Of course, after the priorities are automatically stored, the priorities may be changed in the packet component linear table as needed. For example, if the metal material components are divided into one group of metal material components, two groups of metal material components, and three groups of metal material components, then the priority in one set of metallic material components may be changed to 210, the priority in two sets of metallic material components may be changed to 220, the priority in three sets of metallic material components may be changed to 230, etc. Thus, for components of the same material, different priorities may also be provided.
In the present invention, the priority of the port is assigned to 250, the priority of the metallic material component is assigned to 200, and the priority of the nonmetallic material component is assigned to 100, which are merely exemplary, and specific numerical values may be assigned as needed. However, to satisfy: the priority of the ports is greater than the priority of the metallic material components and the priority of the metallic material components is greater than the priority of the non-metallic material components.
The invention can conveniently manage the priorities of different material components, such as the priorities between the conductor component and the medium component, the priorities between the port and the conductor component, the priorities between the port and the medium component and the like by setting different priorities for the port, the metal material component and the nonmetal material component.
Correspondingly, the invention further provides a management system of the model component. As shown in fig. 5, the management system of the model component of the present invention includes:
a linear table comprising a port linear table and a plurality of packet component linear tables. The port linear table is used for storing relevant data information of all ports of the model. The individual components of the model are divided into a plurality of groups by material and the plurality of group component linear tables are used to store the relevant data information of all components belonging to one group, respectively.
A material attribute giving module, configured to give material attributes to all the stored components belonging to a group in the group component linear table.
And the priority giving module is used for giving priority to all the ports stored in the port linear table and giving priority to all the components stored in the grouping component linear table according to the material attribute, wherein the priority of the ports is greater than that of the metal material components and the priority of the metal material components is greater than that of the nonmetal material components.
Further, the group component linear table has stored therein component material property pointers. And, the system further comprises:
a materials index summary table having stored therein materials category pointers for various materials categories and associating the grouped component linear table with the materials index summary table by the component materials attribute pointers.
And each material classification table is respectively stored with a material type pointer of the corresponding material classification and associates the material index summary table with the material classification table through the material classification pointer.
And a plurality of material type tables, wherein each material type table stores specific material names of corresponding material types and associates the material classification table with the material type table through the material type pointer.
In addition, the invention also provides a simulation method of the model component. As shown in fig. 6, the simulation method of the model assembly of the present invention includes the steps of:
1. a linear table is constructed.
The linear table includes a port linear table and a plurality of packet component linear tables. The port linear table is used for storing relevant data information of all ports of the model. The individual components of the model are divided into a plurality of groups by material and the plurality of group component linear tables are used to store the relevant data information of all components belonging to one group, respectively.
2. Imparting material properties.
All components belonging to the same group stored in the group component linear table are given material properties.
3. Giving priority.
All ports stored therein are prioritized in the port linearity table and all components stored therein are prioritized in the packet component linearity table according to the material properties. Wherein the priority of the ports is greater than the priority of the metallic material components and the priority of the metallic material components is greater than the priority of the non-metallic material components.
The steps one to three are identical to the steps one to three of the management method of the model assembly described above, and for the sake of simplicity, they will not be described in detail here.
4. And performing simulation setting.
To simulate the model, a simulation setup is necessary. In the present invention, the simulation settings are similar to those of the existing CAE software, and include:
1. a simulation component is added. The simulation components include ports, boundary conditions, field monitoring, and the like.
2. Setting simulation parameters. The simulation parameters comprise electromagnetic parameters, thermal parameters, grid discrete parameters, excitation signal parameters, simulation ending criterion parameters and the like.
This section belongs to the prior art and is not described in detail here for the sake of simplicity.
5. And (5) performing simulation pretreatment.
In the present invention, simulation preprocessing is required before performing specific simulation calculations. The simulation preprocessing specifically comprises the following steps:
1. and normalizing the priorities of all the ports and the components.
As previously described, the ports of the model and the components of different materials are given different priorities, and the priority given to the ports is greater, for example, 250 for the ports, 200 for the metallic material components and 100 for the non-metallic material components. In order to reduce the calculation amount of simulation calculation, their priority values may be normalized. By normalization processing, their priority values are in the range of 0,1 for subsequent calculation and processing.
In the present invention, the method of normalization processing is not limited. For example, the normalization may be performed using the simplest maximum and minimum normalization method.
2. Model reorganization is performed.
And reorganizing the model according to the priority after normalization processing. Wherein, when the model is recombined, the material property of the intersection part of two components with different material properties is taken as the material property of the component with higher priority.
For example, for the patch antenna model shown in fig. 7, the individual components thereof include: a dielectric substrate 1, a radiating patch 2 and a ground 3. The material of the dielectric substrate 1 is a nonmetallic material, and the materials of the radiation patch 2 and the ground 3 are metallic materials. As can be seen from fig. 7, the radiation patch 2 is applied to the dielectric substrate 1, and the priority of the radiation patch 2 is higher than the priority of the dielectric substrate 1, so that the priority of the overlapping portion of the radiation patch 2 and the dielectric substrate 1 is set to be the priority of the radiation patch 2.
Thus, in subsequent simulation calculations, when components of different materials are encountered, the intersection is considered as a component of a higher priority material. Thus, the intersecting part does not need to be processed by using Boolean operation as in the prior art, and the processing is simpler and more convenient.
Further, for the microstrip-to-stripline circuit model shown in fig. 8, each of its individual components includes: a floor 10 of metallic material, a first layer 11 of dielectric material on said floor 10, a layer 13 of metallic material on said first layer 11 of dielectric material, a layer 12 of second dielectric material on said layer 13 of metallic material, a strip feed 14 of metallic material in said layer 11 of dielectric material, a microstrip feed 16 of metallic material on said layer 12 of dielectric material and a metal post 15 passing through them. The metal posts 15 correspond to various metal vias in the PCB board, such as signal holes, ground holes, etc., and may be cylindrical, hollow, or may be configured in other suitable shapes as needed.
In this example, the priority of the metal posts 15 and ports is 200 and the priority of the dielectric material is 100. For the intersection part of the metal column 15 and the dielectric material layer, the boolean operation is not needed to process the intersection part as in the prior art, but the material of the intersection part is directly regarded as metal, so that the processing is simpler and more convenient.
Meanwhile, if the influence of different metal materials on the simulation is considered, the priority of all the metal posts 15 can be set to 210 (or any value higher than 200), and the priority of the components of other metal materials is still 200, then the metal posts 15 can be distinguished from other materials (including the metal layer of the floor and the dielectric layer of the dielectric material), so that the situation of managing the intersection of different kinds of metal materials is realized. That is, using the scheme of the present invention, it is possible to further realize the handling of different kinds of conductors, different kinds of media, ports and material collision problems between conductors, ports and media.
3. And performing grid dispersion on the recombined model.
Discretizing the recombined model by using a grid. This section is identical to existing CAE software and is not described in detail here for simplicity.
6. And (5) performing simulation calculation.
And simulating the reorganized model processed by the model component according to the normalized priority. This section is also identical to existing CAE software and is not described in detail here for simplicity.
Of course, the calculation results may also be processed into visualized results, such as 2D view results, 3D view results, etc., after the simulation calculation, similar to the prior art. Simulation results may also be viewed in a variety of forms.
According to the invention, the ports, the metal material components and the nonmetal material components are provided with different priorities, and the intersecting parts of the different material components are recombined, so that the model can be prevented from being modified by frequent Boolean operation.
Correspondingly, the invention further provides a simulation system of the model component. As shown in fig. 9, the simulation system of the model component of the present invention includes:
the linear table comprises a port linear table and a plurality of grouping component linear tables, wherein the port linear table is used for storing relevant data information of all ports of the model, each component of the model is divided into a plurality of groups according to materials, and the grouping component linear tables are respectively used for storing relevant data information of all components belonging to one group.
A material attribute giving module, configured to give material attributes to all the stored components belonging to a group in the group component linear table.
And the priority giving module is used for giving priority to all the ports stored in the port linear table and giving priority to all the components stored in the grouping component linear table according to the material attribute, wherein the priority of the ports is greater than that of the metal material components and the priority of the metal material components is greater than that of the nonmetal material components.
And the simulation setting module is used for performing simulation setting.
And the simulation preprocessing module is used for performing simulation preprocessing.
And the simulation calculation module is used for performing simulation calculation.
Preferably, the simulation preprocessing module includes:
the normalization processing sub-module is used for normalizing the priorities of all ports and components;
and the model reorganization submodule is used for reorganizing the model according to the priority after normalization processing, wherein the material property of the intersection part of two components with different material properties is taken as the material property of the component with higher priority.
In the present invention, "a plurality of" means one or more, and "a plurality of" means two or more; for the step numbers in the method embodiments, which are set for convenience of illustration, the order between the steps is not limited, and the execution order of the steps in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art; the description of "first" and "second" is used for the purpose of distinguishing between technical features only and is not to be construed as indicating or implying relative importance, implicitly indicating the number of technical features indicated, or implicitly indicating the precedence of the technical features indicated.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and are not intended to limit the scope of the present invention. Modifications and equivalent substitutions can be made by those skilled in the art based on the present teachings without departing from the spirit and scope of the present teachings.
Claims (3)
1. A method of simulating a model assembly, comprising the steps of:
1) Constructing a linear table, wherein the linear table comprises a port linear table and a plurality of grouping component linear tables, the port linear table is used for storing relevant data information of all ports of a model, each component of the model is divided into a plurality of groups according to materials, and the grouping component linear tables are respectively used for storing relevant data information of all components belonging to one group; for components of the same material, dividing them into groups and constructing a group component linear table for each group;
2) Assigning material properties to all components stored therein that belong to the same group in the grouped component linear table;
3) Giving priority to all ports stored in the port linear table and giving priority to all components stored in the grouping component linear table according to the material attribute, wherein the priority of the ports is greater than that of the metal material components and the priority of the metal material components is greater than that of the nonmetal material components;
4) Performing simulation setting;
5) Performing simulation pretreatment;
6) Performing simulation calculation;
the step 2) specifically comprises the following steps:
2.1 Storing component material property pointers in the grouped component linear table;
2.2 Constructing a materials index summary table, storing materials classification pointers for various materials classifications in the materials index summary table and associating the grouped components linear table with the materials index summary table by the components materials attribute pointers;
2.3 Constructing a plurality of material classification tables, respectively storing material type pointers of corresponding material classifications in each material classification table, and associating the material index summary table with the material classification table through the material classification pointers;
2.4 Constructing a plurality of material type tables, storing specific material names of corresponding material types in each material type table, and associating the material classification table with the material type table through the material type pointer;
the step 4) specifically comprises the following steps:
4.1 Adding a simulation component, the simulation component comprising a port, a boundary condition, and a field monitor;
4.2 Setting simulation parameters, wherein the simulation parameters comprise electromagnetic parameters, thermal parameters, grid discrete parameters, excitation signal parameters and simulation ending criterion parameters;
the step 5) specifically comprises the following steps:
5.1 Normalizing the priorities of all ports and components;
5.2 Reorganizing the model according to the priority after normalization treatment, wherein for the intersection part of two components with different material properties, the material properties of the intersection part are taken as the material properties of the components with higher priority;
5.3 Grid-discretizing the reconstructed model.
2. A simulation system for implementing the simulation method of the model component of claim 1, comprising:
the linear table comprises a port linear table and a plurality of grouping component linear tables, wherein the port linear table is used for storing relevant data information of all ports of a model, each component of the model is divided into a plurality of groups according to materials, and the grouping component linear tables are respectively used for storing relevant data information of all components belonging to one group; for components of the same material, dividing them into groups and constructing a group component linear table for each group;
a material attribute giving module for giving material attribute to all components belonging to one group stored in the group component linear table;
a priority giving module, configured to give priority to all ports stored in the port linear table and give priority to all components stored in the packet component linear table according to the material attribute, where the priority of a port is greater than the priority of a metallic material component and the priority of a metallic material component is greater than the priority of a non-metallic material component;
the simulation setting module is used for performing simulation setting;
the simulation preprocessing module is used for performing simulation preprocessing;
the simulation calculation module is used for performing simulation calculation;
the grouping component linear table stores component material attribute pointers; and, the system further comprises:
a materials index summary table in which materials classification pointers for various materials classifications are stored and the grouping component linear table is associated with the materials index summary table by the component materials attribute pointers;
a plurality of material classification tables, each material classification table storing a material type pointer of a corresponding material classification and associating the material index summary table with the material classification table through the material classification pointer;
and a plurality of material type tables, wherein each material type table stores specific material names of corresponding material types and associates the material classification table with the material type table through the material type pointer.
3. The simulation system of claim 2, wherein the simulation preprocessing module comprises:
the normalization processing sub-module is used for normalizing the priorities of all ports and components;
and the model reorganization submodule is used for reorganizing the model according to the priority after normalization processing, wherein the material property of the intersection part of two components with different material properties is taken as the material property of the component with higher priority.
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