CN113065273A - Finite element analysis method and device of model and electronic equipment - Google Patents
Finite element analysis method and device of model and electronic equipment Download PDFInfo
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Abstract
The application provides a finite element analysis method and device of a model and electronic equipment. The method comprises the following steps: acquiring configuration information of the structure model, generating a model role of the structure model based on the configuration information, acquiring construction element information of the structure model from the configuration information, and constructing a finite element basic model based on the construction element information; acquiring the attribution relationship between each model role and the finite element basic model based on the configuration information, and classifying the model roles of the structural model, wherein the model roles attributed to the finite element basic model are first-class model roles, and otherwise, the model roles are second-class model roles; adding the first type of model role into a finite element basic model, and constructing a shadow model of the second type of model role; and aiming at one of the finite element basic model and the shadow model, applying load and constraint to the model to perform finite element analysis, and acquiring a finite element analysis result. According to the method and the device, the data analysis efficiency is improved, the waste of system resources is avoided, and the expansibility is good.
Description
Technical Field
The present application relates to the field of data processing, and in particular, to a method and an apparatus for finite element analysis of a model, and an electronic device.
Background
The structure model needs to generate different finite element models under different calculation conditions, and in the related art, when finite element analysis is performed, different models need to be generated under different calculation conditions, so that the models are analyzed and calculated respectively. This method results in a large number of repeated calculations during the analysis when the calculation conditions change less, and these unnecessary calculations reduce the efficiency of the finite element analysis.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present application is to propose a finite element analysis method of a model.
A second object of the present application is to provide a finite element analysis device for a model.
A third object of the present application is to provide an electronic device.
A fourth object of the present application is to propose a non-transitory computer readable storage medium.
A fifth object of the present application is to propose a computer program product.
To achieve the above object, a first aspect of the present application provides a method for finite element analysis of a model, including:
acquiring configuration information of the structure model, generating a model role of the structure model based on the configuration information, acquiring construction element information of the structure model from the configuration information, and constructing a finite element basic model based on the construction element information;
acquiring the attribution relationship between each model role and the finite element basic model based on the configuration information;
classifying the model roles of the structural model according to the attribution relationship, wherein the model roles attributed to the finite element basic model are first-class model roles, and the rest model roles are second-class model roles;
adding the first type of model role into the finite element basic model, and constructing a shadow model of the second type of model role;
and aiming at one of the finite element basic model and the constructed shadow model, applying load and constraint to the model to perform finite element analysis so as to obtain a finite element analysis result of the model, wherein the finite element analysis result comprises a finite element analysis result of each model role in the model.
In the embodiment of the application, the finite element basic model and the shadow model can meet the design requirements of users by adopting a conventional finite element analysis method to solve the result. The merging of the model roles can reduce the number of models to be analyzed, improve the data analysis efficiency, avoid the waste of system resources and have good expansibility.
To achieve the above object, a second aspect of the present application provides a finite element analysis device of a model, comprising:
the basic model building module is used for obtaining configuration information of the structure model, generating a model role of the structure model based on the configuration information, obtaining building element information of the structure model from the configuration information, and building a finite element basic model based on the building element information;
the attribution relation determining module is used for acquiring the attribution relation between each model role and the finite element basic model based on the configuration information;
the model role classification module is used for classifying the model roles of the structural model according to the attribution relationship, wherein the model roles attributed to the finite element basic model are first class model roles, and the rest model roles are second class model roles;
the processing module is used for adding the first type of model role into the finite element basic model and constructing a shadow model of the second type of model role;
and the analysis module is used for applying load and constraint to the model to perform finite element analysis aiming at one of the finite element basic model and the constructed shadow model so as to obtain a finite element analysis result of the model, wherein the finite element analysis result comprises a finite element analysis result of each model role in the model.
To achieve the above object, a third aspect of the present application provides an electronic device, including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a method of finite element analysis of a model as provided in embodiments of the first aspect of the present application.
To achieve the above object, a fourth aspect of the present application provides a computer-readable storage medium having stored thereon computer instructions for causing a computer to execute a finite element analysis method according to a model provided in the first aspect of the present application.
To achieve the above object, a fifth aspect of the present application provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the computer program implements a finite element analysis method of a model provided in the first aspect of the present application.
Drawings
FIG. 1 is a flow chart of a method of finite element analysis of a model according to one embodiment of the present application;
FIG. 2 is a flow chart of a finite element analysis method of a model according to another embodiment of the present application;
FIG. 3 is a flow chart of a finite element analysis method of a model according to another embodiment of the present application;
FIG. 4 is a flow chart of a finite element analysis method of a model according to another embodiment of the present application;
FIG. 5 is a flow chart of a method of finite element analysis of a model according to another embodiment of the present application;
FIG. 6 is a flow chart of a method of finite element analysis of a model according to another embodiment of the present application;
FIG. 7 is a block diagram of a finite element analysis apparatus of a model according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The finite element analysis method and apparatus of the model according to the embodiment of the present application will be described below with reference to the drawings.
FIG. 1 is a flow chart of a finite element analysis method of a model according to an embodiment of the present application, as shown in FIG. 1, the method comprising the steps of:
s101, obtaining configuration information of the structure model, generating a model role of the structure model based on the configuration information, obtaining construction element information of the structure model from the configuration information, and constructing a finite element basic model based on the construction element information.
In the process of building structure design analysis, parameter information generated according to actual design requirements and the characteristics of a building structure is configuration information of a structure model. In the embodiment of the present application, the configuration information may include basic information such as load, material property, geometric property, and the like of the structural model, and may further include related information about actual design requirements of a user.
The following illustrates a process of constructing the role of the tie beam reduction model, for example, a user needs to perform earthquake action analysis on a building structure, and since the earthquake action analysis needs to reduce the stiffness of the tie beam of the structure, the configuration information of the structure model includes, but is not limited to, basic information of the building structure and tie beam reduction information. And generating the link beam reduction role of the structural model based on the configuration information.
Optionally, based on different configuration information, one or more of the following model roles may also be created: a basic role, a tie beam collapse role, a forced rigid plate role, a layer rigidity role, an upper rigidity condensation role, a wind tie beam collapse role, a creep rigidity collapse role, a vertical earthquake role and the like.
And acquiring element information such as nodes, units, loads, constraints and the like of the structural model from the basic information of the configuration information, and generating components required for constructing the model based on the element information, wherein the components can be walls, infilled walls, beams, columns, floors, doors, windows and the like. Further, these components are inserted to generate an initial model.
And further, carrying out grid division on the initial model, establishing a unit stiffness matrix in a unit local coordinate system, assembling the stiffness matrices of all units according to the sequence of the degrees of freedom, generating a total stiffness matrix under a global coordinate, and further generating a finite element basic model according to the total stiffness matrix.
And S102, acquiring the attribution relation between each model role and the finite element basic model based on the configuration information.
And judging the attribution relationship between each model role and the finite element basic model based on the configuration information. In some implementations, if the configuration information corresponding to the model role meets the attribution judgment condition, judging that the attribution relationship between the model role and the finite element basic model belongs to the finite element basic model, so as to reduce the calculation amount in the subsequent analysis process.
When the configuration information corresponding to the model role does not meet the attribution judgment condition, if the model role is attributed to the finite element basic model, the analysis result may be inaccurate. Therefore, in order to increase the accuracy of the analysis result, when the configuration information corresponding to the model role does not satisfy the attribution judgment condition, it is judged that the attribution relationship between the current model role and the finite element basic model is not attributed to the finite element basic model.
Optionally, the attribution judgment condition may be an influence degree of the configuration information corresponding to the model role condition on the design requirement, that is, when the configuration information corresponding to the model role has no influence on the design requirement, judging that the attribution relationship between the model role and the finite element basic model belongs to the finite element basic model; and when the configuration information corresponding to the model role influences the design requirement, judging that the attribution relationship between the model role and the finite element basic model is not attributed to the finite element basic model.
S103, classifying the model roles of the structural model according to the attribution relationship, wherein the model role attributed to the finite element basic model is a first type model role, and the rest model roles are second type model roles.
And classifying the model roles based on the attribution relationship, wherein the model roles which belong to the finite element basic model are taken as a first class of model roles, and the model roles which do not belong to the finite element basic model are taken as a second class of model roles.
S104, adding the first type of model role into the finite element basic model, and constructing a shadow model of the second type of model role.
The process of adding the first type of model role to the finite element base model is precisely a process of establishing the association, i.e. the first type of model role is associated to the corresponding finite element base model, and these associations are recorded. And completing the analysis and calculation of the corresponding finite element basic model, namely completing the analysis and calculation of the model role added to the model.
After each first type model role is merged into the finite element basic model, the number of models needing to be analyzed can be reduced in data analysis, and the analysis efficiency is improved.
For each second type model role, different model roles have respective model characteristics, so that the basic model needs to be adjusted in a specific aspect to generate a shadow model matched with the second type model role.
As a possible implementation manner, the attribute of the second type model role is obtained, and then the adjustment object in the finite element basic model corresponding to the second type model role is obtained according to the attribute of the second type model role, where the adjustment object may include a degree of freedom item and a tie beam stiffness item of the basic model. Optionally, a mapping relationship between the attribute of the model role and the adjustment object is stored in the model, and based on the mapping relationship, the adjustment object corresponding to the second type of model role can be determined.
Further, adjusting an adjusting object in the finite element basic model to generate a shadow model for subsequent analysis. Compared with the method for recreating the model, the method has higher efficiency, less occupied system resources and stronger expansibility. It should be noted that, in the process of creating the shadow model, the adjustment object of the backup model of the finite element base model is adjusted.
And S105, aiming at one of the finite element basic model and the constructed shadow model, applying load and constraint to the model for finite element analysis so as to obtain a finite element analysis result of the model, wherein the finite element analysis result comprises a finite element analysis result of each model role in the model.
In engineering practice, a component is always interconnected with other surrounding components in a manner that the movement of the object is limited by other surrounding objects. Such other objects in the surroundings that limit certain displacements of the object are called constraints.
Alternatively, the finite element software commonly used for the finite element analysis is ANSYS, SDRC/I-DEAS, or the like. Taking ANSYS finite element analysis as an example, the load application may be applied to the finite element elements or nodes while applying loads and constraints to the model. Alternatively, the load types may be classified into a concentrated load, a line-surface load, a volume load, an inertial load, and the like. And according to the size, distribution and time dependence of the load, making approximate estimation through simplified assumption in finite element analysis, and carrying out finite element solution to generate a finite element analysis result of the combined building model. Because the first type of model role is already associated to the corresponding finite element basic model, the analysis and calculation of the corresponding finite element basic model can be completed, and the analysis and calculation of the model role added to the model can be completed. That is, in the embodiment of the present application, the finite element analysis result includes the finite element analysis result of each model character in the model.
Therefore, finite element analysis is carried out on the finite element basic model and the constructed shadow model to obtain a finite element analysis result of each model role in the model, and the finite element analysis result can be used for designing a subsequent building structure.
In the embodiment of the application, the finite element basic model and the shadow model can meet the design requirements of users by adopting a conventional finite element analysis method to solve the result. The merging of the model roles can reduce the number of models to be analyzed, improve the data analysis efficiency, avoid the waste of system resources and have good expansibility.
On the basis of the above embodiments, the following takes the role of beam folding as an example to further explain the finite element analysis method of the model provided in the embodiments of the present application.
Fig. 2 is a flowchart of a finite element analysis method of a model according to another embodiment of the present application, and as shown in fig. 2, the step of determining the affiliation of the tie beam reduction role includes:
s201, when the model role is the role of the connecting beam reduction model, if the structural model has connecting beam components and the connecting beam reduction coefficient is smaller than a set threshold value, determining that the attribution relationship between the connecting beam reduction model role and the finite element basic model is not attributed to the finite element basic model.
And acquiring attribution judgment conditions corresponding to the connecting beam reduction roles. When the roof beam folding roles are merged, the following 3 situations may occur: (a) the structural model has no connecting beam; (b) the structural model has connecting beams, and the folding coefficient of the connecting beams is not less than a set threshold value; (c) the structural model has a connecting beam, and the reduction coefficient of the connecting beam is smaller than a set threshold value.
In the embodiment of the application, the attribution judgment condition of the connecting beam reduction role is as follows: and the folding coefficient of the connecting beam is not less than a set threshold value when the connecting beam does not exist in the structural model or when the connecting beam exists in the structural model.
Optionally, in this embodiment of the present application, the set threshold may be 1. That is to say, when the structural model has the connecting beam and the connecting beam reduction coefficient is smaller than 1, the attribution relationship between the connecting beam reduction role and the finite element basic model is judged to be not attributed to the finite element basic model.
S202, if the structural model does not have the connecting beam or the structural model has the connecting beam and the connecting beam reduction coefficient is not smaller than the set threshold value, determining that the attribution relationship between the role of the connecting beam reduction model and the finite element basic model belongs to the finite element basic model.
And if the structural model does not have the connecting beam or the structural model has the connecting beam and the connecting beam reduction coefficient is not smaller than the set threshold value, namely, the structural model does not have the connecting beam or the structural model has the connecting beam and the connecting beam reduction coefficient is 1, judging that the attribution relationship between the role of the connecting beam reduction model and the finite element basic model belongs to the finite element basic model.
In the embodiment of the application, the attribution relationship of the model roles is utilized to merge the model roles, the merging of the model roles can reduce the number of models needing to be analyzed, the data analysis efficiency is improved, the waste of system resources is avoided, and the method has good expansibility.
Fig. 3 is a flowchart of a finite element analysis method of a model according to another embodiment of the present application, and as shown in fig. 3, when the second type of role model is a tie beam catadioptric model role, the step of generating a corresponding shadow model includes:
s301, if the attribute of the role of the second type of model indicates that the second type of role model is the role of the connecting beam reduction model, determining an adjusting object in the finite element basic model as a connecting beam rigidity item.
In the embodiment of the application, the shadow model corresponding to the role of the second type model can be obtained only by processing the adjustment object of the finite element basic model. And according to the mapping relation between the attribute of the connecting beam reduction model role and the adjusting object, if the second type role model is the connecting beam reduction model role, the adjusting object in the finite element basic model is a connecting beam rigidity item.
S302, reducing the rigidity item of the connecting beam in the finite element basic model to generate a connecting beam reduction model corresponding to the role of the connecting beam reduction model, wherein the connecting beam reduction model is a shadow model.
And (3) carrying out reduction processing on the rigidity matrix of the coupling beam unit in the finite element basic model to generate a shadow model corresponding to the role of the coupling beam reduction model, namely the coupling beam reduction model.
In the embodiment of the application, the finite element basic model and the shadow model can meet the design requirements of users by adopting a conventional finite element analysis method to solve the result. The merging of the model roles can reduce the number of models to be analyzed, improve the data analysis efficiency, avoid the waste of system resources and have good expansibility.
On the basis of the above embodiments, the following takes the role of a forced rigid plate model as an example to further explain the finite element analysis method of the model provided in the embodiments of the present application.
Fig. 4 is a flowchart of a finite element analysis method of a model according to another embodiment of the present application, and as shown in fig. 4, the step of determining the attribute relationship of the role of the rigid plate model includes:
s401, when the model role is the role of the forced rigid plate model, if the structural model has earthquake analysis requirements and the floor of the structural model has a floor, determining that the attribution relationship between the role of the rigid plate model and the finite element basic model is not attributed to the finite element basic model.
And acquiring the corresponding attribution judgment condition of the role of the forced rigid plate model. The following 3 cases may occur when the rigid plate model roles are forced to merge: (a) the structural model has no seismic analysis requirement; (b) the structural model has earthquake analysis requirements, and floors of the structural model are not provided with floors; (c) the structural model has seismic analysis requirements, and floors of the structural model have floors.
In the embodiment of the present application, the condition for determining the affiliation of the role of the rigid plate model is as follows: the structural model has no seismic analysis requirements or the structural model has seismic analysis requirements, and floors of the structural model have no floors. That is, if the structural model has the seismic analysis requirement and the floor of the structural model has the floor, the attribution relationship between the role of the rigid plate model and the finite element basic model is determined as not attributing to the finite element basic model.
S402, if the structural model has no earthquake analysis requirement or the structural model has the earthquake analysis requirement and the floor of the structural model has no floor, determining that the attribution relationship between the role of the rigid plate model and the finite element basic model belongs to the finite element basic model.
In the embodiment of the application, the attribution relationship of the model roles is utilized to merge the model roles, the merging of the model roles can reduce the number of models needing to be analyzed, the data analysis efficiency is improved, the waste of system resources is avoided, and the method has good expansibility.
Fig. 5 is a flowchart of a finite element analysis method of a model according to another embodiment of the present application, and as shown in fig. 5, when the second type of character model is a forced rigid plate model character, the step of generating a corresponding shadow model includes:
s501, if the attribute of the second type of model role indicates that the second type of model role is a forced rigid plate model role, determining an adjusting object in the finite element basic model as a degree of freedom item.
In the embodiment of the application, the shadow model corresponding to the role of the second type model can be obtained only by processing the adjustment object of the finite element basic model. And according to the mapping relation between the attribute of the role of the forced rigid plate model and the adjustment object, if the second type role model is the role of the forced rigid plate model, the adjustment object in the finite element basic model is a degree of freedom item.
S502, coding and adjusting the degree of freedom item in the finite element basic model to generate a forced rigid plate model corresponding to the role of the forced rigid plate model, wherein the forced rigid plate model is a shadow model.
And (4) coding and adjusting the degree of freedom item in the finite element basic model to generate a shadow model corresponding to the role of the forced rigid plate model, namely the forced rigid plate model.
In the embodiment of the application, the finite element basic model and the shadow model can meet the design requirements of users by adopting a conventional finite element analysis method to solve the result. The merging of the model roles can reduce the number of models to be analyzed, improve the data analysis efficiency, avoid the waste of system resources and have good expansibility.
FIG. 6 is a flow chart of a finite element analysis method of a model according to another embodiment of the present application, and as shown in FIG. 6, constructing a finite element base model based on construction element information includes the steps of:
s601, constructing an initial model based on the construction element information.
And acquiring element information such as nodes, units, loads, constraints and the like of the structural model from the basic information of the configuration information, and generating components required for constructing the model based on the element information, wherein the components can be walls, infilled walls, beams, columns, floors, doors, windows and the like. Further, these components are inserted to generate an initial model.
In some implementations, a standard design drawing may be obtained, and the construction element information is input to the three-dimensional structure model based on the standard design drawing to generate the initial model.
And S602, carrying out meshing on the initial model to obtain a finite element meshing model.
And selecting the mesh type and the definition analysis type, and carrying out mesh division on the initial model to obtain a finite element mesh division model.
S603, establishing a unit stiffness matrix for all units of the finite element mesh division model.
And aiming at each unit of the finite element meshing model, establishing a unit stiffness matrix under a unit local coordinate system.
An element stiffness matrix (element stiffness matrix) is an important coefficient matrix calculated by using a finite element method in solid mechanics. In the mechanical analysis of the finite unit body, the stress and deformation relation of the unit body is characterized. The unit stiffness moment of each unit in the finite element model is obtained, and the complex relation between force and deformation can be simply and visually represented by a matrix, so that the programming calculation is facilitated. The physical meaning of an element in the stiffness matrix of the element is the ability of the element to resist deformation after being subjected to a node force, and is determined by the shape, size, orientation and elastic constant of the element, regardless of the position of the element, i.e. without changing with the parallel movement of the element or coordinate axes.
S604, obtaining a model constraint condition, and sequencing the degrees of freedom of all units in the finite element meshing model based on the model constraint condition.
And defining a model constraint condition of the model to be constructed, thereby forbidding rigid body displacement of the model and reducing modeling errors. And sequencing the degrees of freedom of all units in the finite element meshing model based on the model constraint condition.
S605, assembling the stiffness matrixes of all the units according to the sequencing result of the degrees of freedom to generate an overall stiffness matrix, and generating a finite element basic model based on the overall stiffness matrix.
In finite element analysis, the task of finite element analysis is to establish an element stiffness equation to form an element stiffness matrix; the main task of the overall analysis is to integrate the units into a whole, and form an overall stiffness matrix by the unit stiffness matrix according to the stiffness integration rule.
In the embodiment of the application, the stiffness matrixes of all the units are assembled according to the sorting result of the degrees of freedom, the overall stiffness matrix under the global coordinate is generated, and the finite element basic model is obtained.
According to the method and the device, the data analysis efficiency is improved, the waste of system resources is avoided, and the expansibility is good.
Fig. 7 is a block diagram of a finite element analysis apparatus of a model according to an embodiment of the present invention, and as shown in fig. 7, based on the same application concept, a finite element analysis apparatus 70 of a model according to an embodiment of the present invention includes:
a basic model building module 71, configured to obtain configuration information of the structure model, generate a model role of the structure model based on the configuration information, obtain building element information of the structure model from the configuration information, and build a finite element basic model based on the building element information;
an attribution relation determining module 72, configured to obtain an attribution relation between each model role and the finite element base model based on the configuration information;
the model role classification module 73 is used for classifying the model roles of the structural model according to the attribution relationship, wherein the model roles attributed to the finite element basic model are first-class model roles, and the rest model roles are second-class model roles;
a processing module 74, configured to add the first type of model role to the finite element base model, and construct a shadow model of the second type of model role;
an analysis module 75, configured to apply loads and constraints to the model for one of the finite element base model and the constructed shadow model to perform finite element analysis, so as to obtain a finite element analysis result of the model, where the finite element analysis result includes a finite element analysis result of each model role in the model.
Further, in a possible implementation manner of the embodiment of the present application, the attribution relation determining module 72 is further configured to: acquiring attribution judgment conditions corresponding to the model roles for each model role; if the configuration information meets the attribution judgment condition, determining that the attribution relationship between the model role and the finite element basic model belongs to the finite element basic model; and if the configuration information does not meet the attribution judgment condition, determining that the attribution relationship between the model role and the finite element basic model is not attributed to the finite element basic model.
Further, in a possible implementation manner of the embodiment of the present application, the processing module 74 is further configured to: and acquiring an adjusting object in the finite element basic model corresponding to the second type model role based on the attribute of the second type model role, and adjusting the adjusting object in the finite element basic model to generate the shadow model.
Further, in a possible implementation manner of the embodiment of the present application, the processing module 74 is further configured to: if the attribute of the second type of model role indicates that the second type of model role is the tie beam reduction model role, determining an adjusting object in the finite element basic model as a tie beam rigidity item; and reducing the rigidity item of the connecting beam in the finite element basic model to generate a connecting beam reduction model corresponding to the role of the connecting beam reduction model, wherein the connecting beam reduction model is a shadow model.
Further, in a possible implementation manner of the embodiment of the present application, the processing module 74 is further configured to: if the attribute of the second type of model role indicates that the second type of model role is a forced rigid plate model role, determining an adjusting object in the finite element basic model as a degree of freedom item; and coding and adjusting the degree of freedom item in the finite element basic model to generate a forced rigid plate model corresponding to the role of the forced rigid plate model, wherein the forced rigid plate model is a shadow model.
Further, in a possible implementation manner of the embodiment of the present application, the attribution relation determining module 72 is further configured to: when the model role is the role of the connecting beam reduction model, if the structural model has connecting beam components and the connecting beam reduction coefficient is smaller than a set threshold value, determining that the attribution relationship between the connecting beam reduction model role and the finite element basic model is not attributed to the finite element basic model; and if the structural model does not have the connecting beam or the structural model has the connecting beam and the connecting beam reduction coefficient is not less than the set threshold value, determining that the affiliation relationship between the role of the connecting beam reduction model and the finite element basic model belongs to the finite element basic model.
Further, in a possible implementation manner of the embodiment of the present application, the attribution relation determining module 72 is further configured to: when the model role is the role of the forced rigid plate model, if the structural model has earthquake analysis requirements and the floor of the structural model has a floor, determining that the attribution relationship between the role of the rigid plate model and the finite element basic model is not attributed to the finite element basic model; and if the structural model has no earthquake analysis requirement or the structural model has the earthquake analysis requirement and the floor of the structural model has no floor, determining that the attribution relationship between the role of the rigid plate model and the finite element basic model belongs to the finite element basic model.
Further, in a possible implementation manner of the embodiment of the present application, the basic model building module 71 is further configured to: constructing an initial model based on the construction element information; meshing the initial model to obtain a finite element meshing model; establishing a unit stiffness matrix for all units of the finite element meshing model; obtaining a model constraint condition, and sequencing the degrees of freedom of all units in the finite element meshing model based on the model constraint condition; and assembling the rigidity matrixes of all the units according to the sequencing result of the degrees of freedom to generate an overall rigidity matrix, and generating a finite element basic model based on the overall rigidity matrix.
In the embodiment of the application, the finite element basic model and the shadow model can meet the design requirements of users by adopting a conventional finite element analysis method to solve the result. The merging of the model roles can reduce the number of models to be analyzed, improve the data analysis efficiency, avoid the waste of system resources and have good expansibility.
Based on the same application concept, the embodiment of the application also provides the electronic equipment.
Fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 8, the electronic device 80 includes a storage medium 81, a processor 82, and a computer program product stored in the memory 81 and executable on the processor 82, and when the processor executes the computer program, the finite element analysis method of the model is implemented.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Based on the same application concept, the embodiment of the present application further provides a computer-readable storage medium, on which computer instructions are stored, wherein the computer instructions are used for causing a computer to execute the finite element analysis method of the model in the above embodiment.
Based on the same application concept, the present application further provides a computer program product, which includes a computer program that, when being executed by a processor, the computer program performs the finite element analysis method of the model in the above embodiments.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (18)
1. A method of finite element analysis of a model, comprising:
acquiring configuration information of a structure model, generating a model role of the structure model based on the configuration information, acquiring construction element information of the structure model from the configuration information, and constructing a finite element basic model based on the construction element information;
acquiring the attribution relationship between each model role and the finite element basic model based on the configuration information;
classifying the model roles of the structural model according to the attribution relationship, wherein the model role attributed to the finite element basic model is a first type of model role, and the rest model roles are second type of model roles;
adding the first type of model role into the finite element basic model, and constructing a shadow model of the second type of model role;
and aiming at one of the finite element basic model and the constructed shadow model, applying loads and constraints to the model for finite element analysis so as to obtain a finite element analysis result of the model, wherein the finite element analysis result comprises a finite element analysis result of each model role in the model.
2. The method of claim 1, wherein obtaining the attribution relationship of each model role to the finite element base model based on the configuration information comprises:
acquiring attribution judgment conditions corresponding to the model roles for each model role;
if the configuration information meets the attribution judgment condition, determining that the attribution relationship between the model role and the finite element basic model belongs to the finite element basic model;
and if the configuration information does not meet the attribution judgment condition, determining that the attribution relationship between the model role and the finite element basic model is not attributed to the finite element basic model.
3. The method of claim 1, wherein the constructing the shadow model of the second type of model role comprises:
and acquiring an adjusting object in the finite element basic model corresponding to the second type model role based on the attribute of the second type model role, and adjusting the adjusting object in the finite element basic model to generate the shadow model.
4. The method of claim 3, wherein the obtaining an adjustment object in the finite element base model corresponding to the second type of model role based on the property of the second type of model role, and adjusting the adjustment object in the finite element base model to generate the shadow model comprises:
if the attribute of the second type of model role indicates that the second type of model role is a connecting beam reduction model role, determining an adjusting object in the finite element basic model as a connecting beam rigidity item;
and reducing the rigidity item of the connecting beam in the finite element basic model to generate a connecting beam reduction model corresponding to the role of the connecting beam reduction model, wherein the connecting beam reduction model is the shadow model.
5. The method of claim 3, wherein the obtaining an adjustment object in the finite element base model corresponding to the second type of model role based on the property of the second type of model role, and adjusting the adjustment object in the finite element base model to generate the shadow model comprises:
if the attribute of the second type of model role indicates that the second type of model role is a forced rigid plate model role, determining an adjusting object in the finite element basic model as a degree of freedom item;
and coding and adjusting the degree of freedom item in the finite element basic model to generate a forced rigid plate model corresponding to the role of the forced rigid plate model, wherein the forced rigid plate model is the shadow model.
6. The method of claim 2 or 4, further comprising:
when the model role is a connecting beam reduction model role, if the structural model has a connecting beam component and the connecting beam reduction coefficient is smaller than a set threshold value, determining that the attribution relationship between the connecting beam reduction model role and the finite element basic model is not attributed to the finite element basic model;
and if the structural model does not have a connecting beam or the structural model has the connecting beam and the connecting beam reduction coefficient is not smaller than the set threshold value, determining that the attribution relationship between the role of the connecting beam reduction model and the finite element basic model belongs to the finite element basic model.
7. The method of claim 2 or 5, further comprising:
when the model role is a role of a forced rigid plate model, if the structural model has earthquake analysis requirements and a floor of the structural model has a floor, determining that the attribution relationship between the role of the rigid plate model and the finite element basic model is not attributed to the finite element basic model;
and if the structural model has no earthquake analysis requirement or the structural model has the earthquake analysis requirement and the floor of the structural model has no floor, determining that the attribution relationship between the role of the rigid plate model and the finite element basic model belongs to the finite element basic model.
8. The method of claim 1, wherein said building a finite element base model based on said build element information comprises:
constructing an initial model based on the construction element information;
meshing the initial model to obtain a finite element meshing model;
establishing a unit stiffness matrix for all units of the finite element meshing model;
obtaining a model constraint condition, and sequencing the degrees of freedom of all units in the finite element meshing model based on the model constraint condition;
and assembling the rigidity matrixes of all the units according to the sequencing result of the degrees of freedom to generate an overall rigidity matrix, and generating the finite element basic model based on the overall rigidity matrix.
9. A finite element analysis apparatus for a model, comprising:
the basic model building module is used for obtaining configuration information of a structure model, generating a model role of the structure model based on the configuration information, obtaining building element information of the structure model from the configuration information, and building a finite element basic model based on the building element information;
the attribution relation determining module is used for acquiring the attribution relation between each model role and the finite element basic model based on the configuration information;
the model role classification module is used for classifying the model roles of the structure model according to the attribution relationship, wherein the model roles attributed to the finite element basic model are first model roles, and the rest model roles are second model roles;
the processing module is used for adding the first type of model role into the finite element basic model and constructing a shadow model of the second type of model role;
and the analysis module is used for applying loads and constraints to the model to perform finite element analysis aiming at one of the finite element basic model and the constructed shadow model so as to obtain a finite element analysis result of the model, wherein the finite element analysis result comprises a finite element analysis result of each model role in the model.
10. The apparatus of claim 9, wherein the affiliation determination module is further configured to:
acquiring attribution judgment conditions corresponding to the model roles for each model role;
if the configuration information meets the attribution judgment condition, determining that the attribution relationship between the model role and the finite element basic model belongs to the finite element basic model;
and if the configuration information does not meet the attribution judgment condition, determining that the attribution relationship between the model role and the finite element basic model is not attributed to the finite element basic model.
11. The apparatus of claim 9, wherein the processing module is further configured to:
and acquiring an adjusting object in the finite element basic model corresponding to the second type model role based on the attribute of the second type model role, and adjusting the adjusting object in the finite element basic model to generate the shadow model.
12. The apparatus of claim 11, wherein the processing module is further configured to:
if the attribute of the second type of model role indicates that the second type of model role is a connecting beam reduction model role, determining an adjusting object in the finite element basic model as a connecting beam rigidity item;
and reducing the rigidity item of the connecting beam in the finite element basic model to generate a connecting beam reduction model corresponding to the role of the connecting beam reduction model, wherein the connecting beam reduction model is the shadow model.
13. The apparatus of claim 11, wherein the processing module is further configured to:
if the attribute of the second type of model role indicates that the second type of model role is a forced rigid plate model role, determining an adjusting object in the finite element basic model as a degree of freedom item;
and coding and adjusting the degree of freedom item in the finite element basic model to generate a forced rigid plate model corresponding to the role of the forced rigid plate model, wherein the forced rigid plate model is the shadow model.
14. The apparatus of claim 10 or 12, wherein the affiliation determination module is further configured to:
when the model role is a connecting beam reduction model role, if the structural model has a connecting beam component and the connecting beam reduction coefficient is smaller than a set threshold value, determining that the attribution relationship between the connecting beam reduction model role and the finite element basic model is not attributed to the finite element basic model;
and if the structural model does not have a connecting beam or the structural model has the connecting beam and the connecting beam reduction coefficient is not smaller than the set threshold value, determining that the attribution relationship between the role of the connecting beam reduction model and the finite element basic model belongs to the finite element basic model.
15. The apparatus of claim 10 or 13, wherein the affiliation determination module is further configured to:
when the model role is a role of a forced rigid plate model, if the structural model has earthquake analysis requirements and a floor of the structural model has a floor, determining that the attribution relationship between the role of the rigid plate model and the finite element basic model is not attributed to the finite element basic model;
and if the structural model has no earthquake analysis requirement or the structural model has the earthquake analysis requirement and the floor of the structural model has no floor, determining that the attribution relationship between the role of the rigid plate model and the finite element basic model belongs to the finite element basic model.
16. The apparatus of claim 9, wherein the base model building module is further configured to:
constructing an initial model based on the construction element information;
meshing the initial model to obtain a finite element meshing model;
establishing a unit stiffness matrix for all units of the finite element meshing model;
obtaining a model constraint condition, and sequencing the degrees of freedom of all units in the finite element meshing model based on the model constraint condition;
and assembling the rigidity matrixes of all the units according to the sequencing result of the degrees of freedom to generate an overall rigidity matrix, and generating the finite element basic model based on the overall rigidity matrix.
17. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-8.
18. A computer readable storage medium having stored thereon computer instructions for causing the computer to perform the method of any of claims 1-8.
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