CN107133377B - Modeling method and device for bolt connection - Google Patents
Modeling method and device for bolt connection Download PDFInfo
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- CN107133377B CN107133377B CN201710193794.1A CN201710193794A CN107133377B CN 107133377 B CN107133377 B CN 107133377B CN 201710193794 A CN201710193794 A CN 201710193794A CN 107133377 B CN107133377 B CN 107133377B
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Abstract
The invention discloses a modeling method and device for bolt connection. Wherein, the method comprises the following steps: constructing a finite element group of bolt connecting members, wherein the bolt connecting members comprise a first bolt connecting member and a second bolt connecting member, and the first bolt connecting member and the second bolt connecting member are connected through bolts; determining a bolt hole communicating component according to the boundary node of the finite element group; determining the central position of the bolt hole communication component as a central finite element node; and constructing a bolt unit according to the bolt hole communication component and the central finite element node. The invention solves the technical problems of complex operation and low efficiency caused by manual bolt modeling in the prior art.
Description
Technical Field
The invention relates to the field of modeling, in particular to a method and a device for modeling bolt connection.
Background
The bolt connection is a common form of structural connection in engineering, the bolt connection is widely used in structures including machinery, civil engineering and the like, and the bolt connection is often a main bearing connecting piece of the structure, so that the simulation analysis of the bolt connection widely relates to industries including aerospace, weapons, ships, automobiles, general machinery, roads and bridges and the like. However, bolted connections tend to have two characteristics: firstly, the connection structure is relatively complicated, secondly, bolted connection generally appears in groups, this has brought very big work load for the model establishment of bolt analysis, according to incomplete statistics, in the structure simulation modeling, cost such as the cost consuming time and power including the modeling of indirect detail positions such as bolt modeling often occupies more than half of whole modeling total cost.
Aiming at the problems of complex operation and low efficiency caused by manual bolt modeling in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a modeling method and a device for bolt connection, which are used for at least solving the technical problems of complex operation and low efficiency caused by manual bolt modeling in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a method of modeling a bolt connection, including: constructing a finite element group of bolt connecting members, wherein the bolt connecting members comprise a first bolt connecting member and a second bolt connecting member, and the first bolt connecting member and the second bolt connecting member are connected through bolts; determining a bolt hole communicating component according to the boundary node of the finite element group; determining the central position of the bolt hole communication component as a central finite element node; and constructing a bolt unit according to the bolt hole communication component and the central finite element node.
According to another aspect of the embodiments of the present invention, there is also provided a bolt connection modeling apparatus including: the first building module is used for building a finite element group of the bolt connecting members, wherein the bolt connecting members comprise a first bolt connecting member and a second bolt connecting member, and the first bolt connecting member and the second bolt connecting member are connected through bolts; the first determining module is used for determining bolt hole communicating components according to boundary nodes of the finite element groups; the second determining module is used for determining the central position of the bolt hole communication component as a central finite element node; and the second construction module is used for constructing the bolt unit according to the bolt hole communication component and the central finite element node.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein the apparatus on which the storage medium is located is controlled to execute the above-mentioned modeling method of bolt connection when the program is executed.
According to another aspect of the embodiments of the present invention, there is also provided a processor, wherein the processor is configured to run a program, and the program is configured to execute the above-mentioned modeling method for bolt connection when running.
According to another aspect of the embodiments of the present invention, there is also provided a terminal, including: the first building module is used for building a finite element group of the bolt connecting members, wherein the bolt connecting members comprise a first bolt connecting member and a second bolt connecting member, and the first bolt connecting member and the second bolt connecting member are connected through bolts; the first determining module is used for determining bolt hole communicating components according to boundary nodes of the finite element groups; the second determining module is used for determining the central position of the bolt hole communication component as a central finite element node; the second construction module is used for constructing a bolt unit according to the bolt hole communication component and the central finite element node; a processor running the program, wherein the program runs to execute the following processing steps for the data output from the first building module, the first determining module, the second determining module and the second building module: a first step of constructing a finite element group of bolt connection members, wherein the bolt connection members include a first bolt connection member and a second bolt connection member, and the first bolt connection member and the second bolt connection member are connected by a bolt; secondly, determining a bolt hole communicating component according to boundary nodes of the finite element groups; thirdly, determining the central position of the bolt hole communication component as a central finite element node; and a fourth step of constructing a bolt unit according to the bolt hole communication component and the central finite element node.
According to another aspect of the embodiments of the present invention, there is also provided a terminal, including: the first building module is used for building a finite element group of the bolt connecting members, wherein the bolt connecting members comprise a first bolt connecting member and a second bolt connecting member, and the first bolt connecting member and the second bolt connecting member are connected through bolts; the first determining module is used for determining bolt hole communicating components according to boundary nodes of the finite element groups; the second determining module is used for determining the central position of the bolt hole communication component as a central finite element node; a second construction module for constructing a bolt cell storage medium from the bolt hole connectivity component and the central finite element node, for storing a program, wherein the program performs the following processing steps on data output from the first construction module, the first determination module, the second determination module, and the second construction module when running: a first step of constructing a finite element group of bolt connection members, wherein the bolt connection members include a first bolt connection member and a second bolt connection member, and the first bolt connection member and the second bolt connection member are connected by a bolt; secondly, determining a bolt hole communicating component according to boundary nodes of the finite element groups; thirdly, determining the central position of the bolt hole communication component as a central finite element node; and a fourth step of constructing a bolt unit according to the bolt hole communication component and the central finite element node.
In the embodiment of the invention, the bolt connection component comprises a first bolt connection component and a second bolt connection component which are connected through a bolt, the bolt hole communication component is determined according to the boundary node of the finite element group, then the central position of the bolt hole communication component is determined to be a central finite element node, and finally the bolt unit is constructed according to the bolt hole communication component and the central finite element node, so that the aim of automatically modeling the bolt connection is fulfilled. And possess the technological effect of practicing thrift manpower and materials resource cost simultaneously, and then solved the complex operation that the manual work carries out bolt modeling among the prior art and caused, technical problem with low efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic illustration of a method of modeling a bolted joint according to an embodiment of the invention;
FIG. 2 is a schematic illustration of an alternative method of modeling a bolted joint in accordance with an embodiment of the present invention;
FIG. 3 is a schematic illustration of an alternative method of modeling a bolted joint in accordance with an embodiment of the present invention;
FIG. 4 is a schematic illustration of an alternative method of modeling a bolted joint in accordance with an embodiment of the present invention;
FIG. 5 is a schematic illustration of an alternative method of modeling a bolted joint in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram of a bolted modeling apparatus according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of an alternative bolted modeling apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an alternative bolted modeling apparatus according to an embodiment of the present invention;
FIG. 9 is a schematic illustration of an alternative bolted modeling apparatus according to an embodiment of the present invention;
FIG. 10 is a schematic illustration of an alternative bolted modeling apparatus according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a terminal according to an embodiment of the present invention; and
fig. 12 is a schematic diagram of an alternative terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
In accordance with an embodiment of the present invention, there is provided a method embodiment of a method of modeling bolted joints, it being noted that the steps illustrated in the flowchart of the figure may be performed in a computer system, such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.
FIG. 1 is a method of modeling a bolted connection according to an embodiment of the invention, as shown in FIG. 1, comprising
Step S102, constructing a finite element group of the bolt connecting component, wherein the bolt connecting component comprises a first bolt connecting component and a second bolt connecting component, and the first bolt connecting component and the second bolt connecting component are connected through bolts.
Specifically, two members to be connected by a bolt may be defined as a first bolt connecting member and a second bolt connecting member, respectively, and then the finite element group for constructing the bolt connecting member is the finite element group for constructing the first bolt connecting member and the finite element group for constructing the second bolt connecting member, where the finite element group is composed of a plurality of elements, and optionally, as shown in fig. 2, the shape of the elements for constructing the finite element group may be a quadrangle and/or a triangle.
And step S104, determining bolt hole communication components according to boundary nodes of the finite element groups.
Specifically, the finite element group is composed of a plurality of units, and the units are composed of nodes, and the condition that the boundary node is satisfied may include: under the condition that one edge or two nodes of one unit are shared by only one unit, the node or the two nodes on the edge are boundary nodes; in the case where one edge of one cell is shared by two or more cells, if the normal angle between the two or more cells is larger than the angle of the set constraint, the node on the shared edge is also a boundary node, and in the second case, the node is often at a turning point of the member.
Specifically, the connected components may be determined from the boundary nodes of the finite element groups, and include at least a bolt hole connected component and a connected component representing the outermost periphery shape of the bolt connection member, which is required in the embodiment of the present invention.
Through above-mentioned step S104, can solve among the prior art artifical node around the bolt hole trouble and inaccurate and the problem of complex operation.
And S106, determining the central position of the bolt hole communication component as a central finite element node.
Specifically, after the bolt hole communication component is determined, the central position of the bolt hole communication component can be calculated, and a finite element node, namely a central finite element node, is newly built.
Through the step S106, the problem that the center of the bolt hole is difficult to determine due to the fact that space points are not well found and are not well positioned in the prior art can be solved.
And S108, constructing a bolt unit according to the bolt hole communication component and the central finite element node.
Specifically, the bolt unit is mainly composed of a beam unit and a bolt hole position unit, and the beam unit and the bolt hole position unit can be determined according to the bolt hole communication component and the central finite element node.
In the embodiment of the invention, the bolt connection component comprises a first bolt connection component and a second bolt connection component which are connected through a bolt, the bolt hole communication component is determined according to the boundary node of the finite element group, then the central position of the bolt hole communication component is determined to be a central finite element node, and finally the bolt unit is constructed according to the bolt hole communication component and the central finite element node, so that the aim of automatically modeling the bolt connection is fulfilled. And possess the technological effect of practicing thrift manpower and materials resource cost simultaneously, and then solved the complex operation that the manual work carries out bolt modeling among the prior art and caused, technical problem with low efficiency.
In an alternative embodiment, the determining the bolt hole connectivity component according to the boundary node of the finite element group in step S104 includes:
in step S202, boundary nodes of the finite element groups are determined.
And step S204, establishing an undirected graph according to the boundary nodes.
Step S206, determining the connected component of the undirected graph.
And S208, screening the communication components to obtain the bolt hole communication components.
Specifically, how to determine the boundary node is discussed in the foregoing, which is not described herein any more, after the boundary node is determined, an undirected graph may be established according to the boundary node, and a connected component may be found according to the undirected graph, where an undirected graph (undirected graph) is a binary group < E, V >, where: e is a non-empty set, called a set of vertices; v is a set of unordered doublets formed by elements in E, called an edge set; in the graph theory, the connected graph is based on the concept of connection, and as shown in fig. 3, in an undirected graph G, if there is a path from a vertex vi to a vertex vj (certainly there is a path from vj to vi), vi and vj are called to be connected (i 1, 2, 3.; j 1, 2, 3.). If G is a directed graph, then all edges in the path connecting vi and vj must be co-directional. If any two points in the graph are connected, the graph is called a connected graph. If the graph is a directed graph, it is called a strongly connected graph (note: there is a need for paths in both directions). Graph connectivity is a fundamental property of a graph. One greatly connected subgraph of the undirected graph G is referred to as a connected component (or connected branch) of the graph G. The connectivity graph has only one connectivity component, itself; an undirected graph that is non-connected has a plurality of connected components.
Specifically, the graph G may be traversed by a depth-first traversal method, where the depth-first traversal method is described as follows: starting from a certain vertex v in the graph, visiting the vertex v; sequentially starting from the non-accessed adjacent points of v, performing depth-first traversal on the graph until the vertexes, communicated with the paths of v, in the graph are accessed; if the vertex in the graph is not accessed, starting from an unvisited vertex, performing depth-first traversal again until all the vertices in the graph are accessed.
As an optional embodiment, assuming that the first bolt connection member and the second bolt connection member are rectangular planes including four bolt holes, nodes and edges of all units on a finite element group may be traversed first, and the unit edges and nodes satisfying a boundary point condition are recorded, as shown in fig. 4, an undirected graph G is established according to the found boundary edges and node information, a vertex of the undirected graph G corresponds to a node, and an edge of the undirected graph G corresponds to a boundary edge; through the connected component of the depth-first search algorithm searching figure G, 4 circular connected components and an outermost rectangular connected component are screened out, wherein the 4 circular connected components are bolt hole connected components.
In an alternative embodiment, the screening the connected components in step S208 to obtain the bolt hole connected components includes:
step S302, calculating the maximum value of the distance between every two nodes in the connected component.
Step S304, comparing the maximum value with the preset bolt hole diameter.
And S306, determining the communication component corresponding to the maximum value as the bolt hole communication component under the condition that the maximum value is smaller than or equal to the bolt hole diameter.
Specifically, the connected component obtained according to the undirected graph includes a bolt hole connected component and a connected component representing the outermost periphery shape of the bolt connecting member, so that the connected component needs to be screened to obtain the bolt hole connected component, the maximum value of the distance between every two nodes in each connected component can be firstly calculated during screening, the maximum value of the distance between every two nodes in each connected component is compared with the preset bolt hole diameter, automatic filtering is performed, the connected component representing the outermost periphery shape of the bolt connecting member can be filtered, and the bolt hole connected component is left.
In a specific embodiment, as shown in the embodiment shown in fig. 4, for a bolt connection component, through screening the connected components, 4 circular connected components, that is, bolt hole connected components, can be left, and the central positions of the 4 circular connected components are calculated, and 4 central finite element nodes are newly created, similarly for another bolt connection construction, the 4 circular connected components can also be found according to the same method, and the central positions of the 4 circular connected components are also calculated, and 4 central finite element nodes are newly created.
In an alternative embodiment, the step S108 of constructing the bolt unit according to the bolt hole communication component and the central finite element node includes:
step S402, connecting the mutually matched central finite element nodes of the first bolt connecting component and the second bolt connecting component, and establishing a beam unit representing the stud.
And S404, establishing a flexible unit of the bolt hole position according to the central finite element node and the node on the bolt hole communication component.
Step S406, constructing a bolt unit from the beam unit and the flexible unit.
Specifically, the central finite element nodes of the first bolt connecting member and the second bolt connecting member which are matched with each other can be determined by calculating the minimum distance between the central finite element nodes of the first bolt connecting member and the second bolt connecting member, a beam unit is established, and the flexible unit, specifically, the RBE3 unit can be established according to the two central finite element nodes of the beam unit and the peripheral nodes of the bolt hole position, as shown in fig. 5, wherein the bolt connection of the finite element unit is simplified by representing the bolt as a beam unit and two RBE3 units, the beam unit represents the stud, and the two nodes of the beam unit are respectively connected with the nodes of the bolt hole position to form the RBE3 unit, so that the establishment of the bolt unit is completed.
In an alternative embodiment, after the finite element set of the bolt connection member is constructed in step S102, the method further includes:
and step S502, matching a preset finite element group model according to the finite element group to obtain a matching result.
Step S504, distinguishing the first bolt connecting member from the second bolt connecting member according to the matching result.
Specifically, in order to automatically distinguish the first bolting component from the second bolting component, existing finite element group models may be established, each finite element group model may correspond to a specific structure, and finite element groups of the first bolting component and the second bolting component are matched with the existing finite element group models to automatically distinguish the structures of the two bolting components.
In an alternative embodiment, after the bolt unit is constructed according to the bolt hole communication component and the central finite element node in step S108, the method further includes: and step S602, establishing a flexible connection unit grid according to the material information and the section information of the bolt unit and the bolt.
Specifically, based on the established bolt unit, the characteristic of the assigned material and the profile information, the flexible connection unit grid of the bolt can be directly formed, and the finite element analysis can be directly carried out.
Example 2
According to an embodiment of the present invention, there is provided a product embodiment of a bolted modeling apparatus, and fig. 6 is a bolted modeling apparatus according to an embodiment of the present invention, and as shown in fig. 6, the apparatus includes a first building block 101, a first determining block 103, a second determining block 105, and a second building block 107, where the first building block 101 is used for building a finite element group of bolted members, where the bolted members include a first bolted member and a second bolted member, and the first bolted member and the second bolted member are connected by bolts; the first determining module 103 is configured to determine a bolt hole connectivity component according to a boundary node of a finite element group; a second determining module 105, configured to determine a central position of the bolt hole communication component as a central finite element node; and a second constructing module 107, configured to construct the bolt unit according to the bolt hole communication component and the central finite element node.
In the embodiment of the invention, the finite element group of the bolt connecting component is constructed through the first construction module 101, wherein the bolt connecting component comprises a first bolt connecting component and a second bolt connecting component, the first bolt connecting component and the second bolt connecting component are connected through a bolt, the bolt hole communicating component is determined by the first determination module 103 according to the boundary node of the finite element group, then the central position of the bolt hole communicating component is determined by the second determination module 105 to be a central finite element node, and finally the bolt unit is constructed by the second construction module 107 according to the bolt hole communicating component and the central finite element node, so that the aim of automatically modeling the bolt connection is achieved. Especially to complicated bolt group model, its work efficiency can promote 80% at least to possess the technological effect of practicing thrift manpower and materials resource cost simultaneously, and then solved among the prior art artifical bolt modeling cause complicated operation, the inefficiency technical problem.
It should be noted here that the first building module 101, the first determining module 103, the second determining module 105, and the second building module 107 correspond to steps S102 to S108 in embodiment 1, and the modules are the same as the corresponding steps in the implementation example and application scenarios, but are not limited to the disclosure in embodiment 1. It should be noted that the modules described above as part of an apparatus may be implemented in a computer system such as a set of computer-executable instructions.
In an alternative embodiment, as shown in fig. 7, the first determination module 103 includes a third determination module 201, a first establishing module 203, a fourth determination module 205 and a screening module 207, wherein the third determination module 201 is configured to determine boundary nodes of a finite element group after the first constructing module 101 constructs the finite element group of the bolt connection member; a first establishing module 203, configured to establish an undirected graph according to the boundary node; a fourth determining module 205, configured to determine connected components of the undirected graph; and the screening module 207 is used for screening the communication components to obtain the bolt hole communication components.
It should be noted here that the third determining module 201, the first establishing module 203, the fourth determining module 205, and the screening module 207 correspond to steps S202 to S208 in embodiment 1, and the modules are the same as the corresponding steps in the implementation example and application scenario, but are not limited to the disclosure in embodiment 1. It should be noted that the modules described above as part of an apparatus may be implemented in a computer system such as a set of computer-executable instructions.
In an alternative embodiment, as shown in fig. 8, the filtering module 207 includes a calculating module 301, a comparing module 303, and a fifth determining module 305, where the calculating module 301 is configured to calculate a maximum value of a distance between every two nodes in the connected component; a comparison module 303, configured to compare the maximum value with a preset bolt hole diameter; the fifth determining module 305 is configured to determine a communication component corresponding to the maximum value as a bolt hole communication component when the maximum value is smaller than or equal to the bolt hole diameter.
It should be noted here that the above-mentioned calculating module 301, comparing module 303 and fifth determining module 305 correspond to steps S302 to S306 in embodiment 1, and the above-mentioned modules are the same as the examples and application scenarios realized by the corresponding steps, but are not limited to what is disclosed in embodiment 1 above. It should be noted that the modules described above as part of an apparatus may be implemented in a computer system such as a set of computer-executable instructions.
In an alternative embodiment, as shown in fig. 9, the second building module 107 comprises a second building module 401, a third building module 403 and a third building module 405, wherein the second building module 401 is configured to connect the paired central finite element nodes of the first and second bolted members to build a beam element representing a stud; a third establishing module 403, configured to establish a flexible unit at the bolt hole position according to the node of the central finite element and the node on the bolt hole communication component; a third building block 405 for building a bolt unit from the beam unit and the flexible unit.
It should be noted here that the second building module 401, the third building module 403, and the third building module 405 correspond to steps S402 to S406 in embodiment 1, and the modules are the same as the corresponding steps in the implementation example and application scenarios, but are not limited to the disclosure in embodiment 1. It should be noted that the modules described above as part of an apparatus may be implemented in a computer system such as a set of computer-executable instructions.
In an alternative embodiment, as shown in fig. 10, the apparatus further includes a matching module 501 and a distinguishing module 503, where the matching module 501 is configured to match a preset finite element group model according to a finite element group after the first building module 101 builds a finite element group of the bolt connection member, so as to obtain a matching result; a distinguishing module 503, configured to distinguish the first bolt connecting member from the second bolt connecting member according to the matching result.
It should be noted here that the matching module 501 and the distinguishing module 503 correspond to steps S502 to S504 in embodiment 1, and the modules are the same as the examples and application scenarios realized by the corresponding steps, but are not limited to the disclosure of embodiment 1. It should be noted that the modules described above as part of an apparatus may be implemented in a computer system such as a set of computer-executable instructions.
Example 3
According to an embodiment of the present invention, an embodiment of a storage medium 701 is provided, where the storage medium 701 includes a stored program, and when the program runs, a device in which the storage medium 701 is located is controlled to execute the above-mentioned modeling method for bolt connection.
Example 4
According to an embodiment of the present invention, an article of manufacture embodiment of a processor 601 is provided, where the processor 601 is configured to run a program, and the program executes the above-mentioned modeling method for bolt connection during running.
Example 5
According to an embodiment of the present invention, an embodiment of a terminal product is provided, and fig. 11 is a terminal according to an embodiment of the present invention, and as shown in fig. 11, the terminal includes a first building module 101, a first determining module 103, a second determining module 105, a second building module 107, and a processor 601.
The first building module 101 is configured to build a finite element group of the bolt connection member, where the bolt connection member includes a first bolt connection member and a second bolt connection member, and the first bolt connection member and the second bolt connection member are connected by a bolt; the first determining module 103 is configured to determine a bolt hole connectivity component according to a boundary node of a finite element group; a second determining module 105, configured to determine a central position of the bolt hole communication component as a central finite element node; a second construction module 107, configured to construct a bolt unit according to the bolt hole communication component and the central finite element node; a processor 601, wherein the processor 601 runs a program, and the program runs to execute the following processing steps on the data output from the first building module 101, the first determining module 103, the second determining module 105 and the second building module 107: a first step of constructing a finite element group of bolt connection members, wherein the bolt connection members include a first bolt connection member and a second bolt connection member, and the first bolt connection member and the second bolt connection member are connected by a bolt; secondly, determining a bolt hole communicating component according to boundary nodes of the finite element groups; thirdly, determining the central position of the bolt hole communication component as a central finite element node; and a fourth step of constructing a bolt unit according to the bolt hole communication component and the central finite element node.
Example 6
According to an embodiment of the present invention, an embodiment of a terminal product is provided, and fig. 12 is a terminal according to an embodiment of the present invention, and as shown in fig. 12, the terminal includes a first constructing module 101, a first determining module 103, a second determining module 105, a second constructing module 107, and a storage medium 701.
The first building module 101 is configured to build a finite element group of the bolt connection member, where the bolt connection member includes a first bolt connection member and a second bolt connection member, and the first bolt connection member and the second bolt connection member are connected by a bolt; the first determining module 103 is configured to determine a bolt hole connectivity component according to a boundary node of a finite element group; a second determining module 105, configured to determine a central position of the bolt hole communication component as a central finite element node; a second building module 107 for building a bolt cell storage medium 701 from the bolt hole connectivity component and the central finite element node, for storing a program, wherein the program performs the following processing steps on data output from the first building module 101, the first determining module 103, the second determining module 105, and the second building module 107 when running: a first step of constructing a finite element group of bolt connection members, wherein the bolt connection members include a first bolt connection member and a second bolt connection member, and the first bolt connection member and the second bolt connection member are connected by a bolt; secondly, determining a bolt hole communicating component according to boundary nodes of the finite element groups; thirdly, determining the central position of the bolt hole communication component as a central finite element node; and a fourth step of constructing a bolt unit according to the bolt hole communication component and the central finite element node.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A method of modeling a bolted connection, comprising:
constructing a finite element group of bolt connection members, wherein the bolt connection members comprise a first bolt connection member and a second bolt connection member, and the first bolt connection member and the second bolt connection member are connected through bolts;
determining a bolt hole communicating component according to the boundary node of the finite element group;
determining the central position of the bolt hole communication component as a central finite element node;
constructing a bolt unit according to the bolt hole communication component and the central finite element node;
wherein determining bolt hole connectivity components from the boundary nodes of the finite element sets comprises: determining boundary nodes of the finite element group; establishing an undirected graph according to the boundary nodes; determining connected components of the undirected graph; and screening the communication components to obtain the bolt hole communication components.
2. The method of claim 1, wherein screening the connected components to obtain bolt hole connected components comprises:
calculating the maximum value of the distance between every two nodes in the connected component;
comparing the maximum value with a preset bolt hole diameter;
and determining the communication component corresponding to the maximum value as the bolt hole communication component when the maximum value is smaller than or equal to the bolt hole diameter.
3. The method of claim 1 or 2, wherein constructing a bolt element from the bolt hole communication component and the central finite element node comprises:
connecting the paired central finite element nodes of the first bolt connecting component and the second bolt connecting component, and establishing a beam unit representing a stud;
establishing a flexible unit of a bolt hole position according to the central finite element node and the node on the bolt hole communication component;
constructing the bolt unit from the beam unit and the flexible unit.
4. The method of claim 1 or 2, wherein after constructing the finite element set of bolted components, the method further comprises:
matching a preset finite element group model according to the finite element group to obtain a matching result;
distinguishing the first bolt connecting member from the second bolt connecting member according to the matching result.
5. A bolted modeling apparatus, comprising:
a first building block for building a finite element group of bolted components, wherein the bolted components include a first bolted component and a second bolted component, the first and second bolted components being connected by a bolt;
the first determining module is used for determining a bolt hole communicating component according to the boundary node of the finite element group;
the second determining module is used for determining the central position of the bolt hole communication component as a central finite element node;
the second construction module is used for constructing a bolt unit according to the bolt hole communication component and the central finite element node;
wherein the first determination module is further configured to determine a bolt hole connectivity component from boundary nodes of the finite element set by: determining boundary nodes of the finite element group; establishing an undirected graph according to the boundary nodes; determining connected components of the undirected graph; and screening the communication components to obtain the bolt hole communication components.
6. A storage medium, characterized in that the storage medium comprises a stored program, wherein the program, when running, controls a device in which the storage medium is located to execute the bolt joint modeling method according to any one of claims 1 to 4.
7. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to perform the method of modeling a bolted connection according to any one of claims 1 to 4 when running.
8. A terminal, comprising:
a first building block for building a finite element group of bolted components, wherein the bolted components include a first bolted component and a second bolted component, the first and second bolted components being connected by a bolt;
the first determining module is used for determining a bolt hole communicating component according to the boundary node of the finite element group;
the second determining module is used for determining the central position of the bolt hole communication component as a central finite element node;
the second construction module is used for constructing a bolt unit according to the bolt hole communication component and the central finite element node;
a processor that executes a program, wherein the program when executed performs the following processing steps on data output from the first building module, the first determining module, the second determining module, and the second building module: a first step of constructing a finite element group of bolt connection members, wherein the bolt connection members include a first bolt connection member and a second bolt connection member, and the first bolt connection member and the second bolt connection member are connected by a bolt; secondly, determining a bolt hole communication component according to the boundary node of the finite element group; thirdly, determining the central position of the bolt hole communication component as a central finite element node; a fourth step of constructing a bolt unit according to the bolt hole communication component and the central finite element node;
wherein determining bolt hole connectivity components from the boundary nodes of the finite element sets comprises: determining boundary nodes of the finite element group; establishing an undirected graph according to the boundary nodes; determining connected components of the undirected graph; and screening the communication components to obtain the bolt hole communication components.
9. A terminal, comprising:
a first building block for building a finite element group of bolted components, wherein the bolted components include a first bolted component and a second bolted component, the first and second bolted components being connected by a bolt;
the first determining module is used for determining a bolt hole communicating component according to the boundary node of the finite element group;
the second determining module is used for determining the central position of the bolt hole communication component as a central finite element node;
the second construction module is used for constructing a bolt unit according to the bolt hole communication component and the central finite element node;
a storage medium for storing a program, wherein the program performs the following processing steps on data output from the first building module, the first determining module, the second determining module, and the second building module when executed: a first step of constructing a finite element group of bolt connection members, wherein the bolt connection members include a first bolt connection member and a second bolt connection member, and the first bolt connection member and the second bolt connection member are connected by a bolt; secondly, determining a bolt hole communication component according to the boundary node of the finite element group; thirdly, determining the central position of the bolt hole communication component as a central finite element node; a fourth step of constructing a bolt unit according to the bolt hole communication component and the central finite element node;
wherein determining bolt hole connectivity components from the boundary nodes of the finite element sets comprises: determining boundary nodes of the finite element group; establishing an undirected graph according to the boundary nodes; determining connected components of the undirected graph; and screening the communication components to obtain the bolt hole communication components.
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| JP2019207476A (en) * | 2018-05-28 | 2019-12-05 | 三菱重工業株式会社 | Joint part evaluation system, joint part evaluation method, and joint part evaluation program |
| CN111310283B (en) * | 2018-12-12 | 2022-06-03 | 株洲中车时代电气股份有限公司 | Cabinet mechanical connection automatic generation method and program product |
| CN112395725A (en) * | 2019-07-31 | 2021-02-23 | 比亚迪股份有限公司 | Bolt simulation method and device |
| CN112487575B (en) * | 2020-11-25 | 2023-06-06 | 南京航空航天大学 | Method for checking connection node of high-voltage rotor and low-voltage rotor of double-rotor system |
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| US10621293B2 (en) * | 2015-06-09 | 2020-04-14 | The Boeing Company | Modeling holes and fasteners for finite element analysis |
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