CN111062141B - Vibration degree prediction method, device and medium for computer component - Google Patents
Vibration degree prediction method, device and medium for computer component Download PDFInfo
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Abstract
The application discloses a method, a device and a medium for predicting vibration degree of computer components, wherein the method comprises the following steps: the geometric data are imported into a modeling program to establish a structural geometric model and a fluid geometric model corresponding to the interaction surface, and are imported into a pre-constructed structural numerical analysis program and a fluid numerical analysis program respectively, and parameters used for calculation are set. And then setting interactive solving parameters of fluid-solid coupling simulation analysis, solving according to the interactive solving parameters to obtain target vibration parameters, and finally comparing the target vibration parameters with the preset upper limit of the vibration parameters to determine whether the vibration degree of each component meets the requirements. By adopting the technical scheme, the numerical analysis result of the vibration degree of the component under the dual effects of flow field disturbance caused by heat dissipation of the whole machine and structural excitation caused by rotation of the fan and hardware can be obtained, multiple tests are not needed, the problem of long test period is avoided, and the research and development cost and the research and development period of enterprises are reduced.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a method, an apparatus, and a medium for predicting vibration degrees of computer components.
Background
The normal and stable operation of each component of the computer is a basic condition for guaranteeing the operation performance of the whole machine, and when each component of the computer operates, a series of requirements are set for the working environment, wherein the requirements also comprise the limitation related to the vibration degree. If the component mounting location has too large a vibration amplitude, or a vibration frequency that can cause resonance of the core component, it can have a serious impact on the performance of the computer. This vibration effect is typically caused by the dual effects of flow field disturbances caused by heat dissipation from the machine and structural excitation caused by fan and hardware rotation. Therefore, in the development process of the whole computer structure, it becomes an indispensable step to evaluate whether the vibration degree of each component can cause the decline of the hardware performance in the working state of the whole computer.
In the prior art, performance parameters of all parts of a computer in the working state of the whole machine are generally verified through a reliability test of the whole machine product, and the research and development cost and the research and development period of enterprises are obviously increased. In addition, in the test process, the test period is also long.
Disclosure of Invention
The purpose of the application is to provide a method, a device and a medium for predicting the vibration degree of computer components, which are used for predicting the vibration degree of each component of a computer, multiple tests are not needed, and the research and development cost and the research and development period are reduced.
In order to solve the above technical problem, the present application provides a method for predicting vibration degree of a computer component, including:
importing the geometric data of each part of a target computer into a pre-constructed modeling program to establish a structural geometric model and a fluid geometric model corresponding to the interaction surface;
the structural geometric model is imported into a pre-constructed structural numerical analysis program, and parameters used for calculation are set for the structural geometric model;
the fluid geometric model is imported into a pre-constructed fluid numerical analysis program, and parameters used for calculation are set for the fluid geometric model;
setting interactive solving parameters of fluid-solid coupling simulation analysis;
solving the structural geometric model and the fluid geometric model according to the interaction solving parameters to obtain target vibration parameters of all parts of the target computer;
and comparing the target vibration parameter with a preset vibration parameter upper limit to determine whether the vibration degree of each component meets the requirement.
Preferably, before establishing the structural geometric model and the fluid geometric model, the method further comprises:
and simplifying the geometric data according to a pre-stored simplifying rule.
Preferably, the parameters used for the calculation of the structural geometry model settings include:
performing structural grid division on the geometric structure model, and endowing structural material parameters and structural attributes;
establishing a structural connection relationship and a structural contact relationship between the components in the geometric structure model;
and adding structural boundary information to the geometric structure model and setting structural solving parameters.
Preferably, the performing structural meshing on the geometric structure model specifically includes:
grid dividing beam units positioned at the axis positions of the parts, shell unit grid dividing shell units positioned at the middle surface positions of the parts and body unit grid dividing body unit occupying the space positions of the parts;
the parameters of the structural material include: imparting parameters to an elastoplastic material or imparting parameters to a rigid material;
the imparting structural attributes specifically include: giving section or thickness information and mathematical constitutive types of grid cells;
the structural connection relation comprises rigid connection without relative movement and joint connection with freedom of movement;
the structural contact relationship includes a relatively penetrating component contact relationship and a relatively moving constraining contact relationship;
the structure boundary information comprises motion freedom constraint information, vibration load excitation information and fluid-solid coupling analysis interaction surface definition information which are subjected to a complete machine structure model;
the structure solving parameters comprise transient structure calculation formula control parameters, time step control parameters and result output control parameters.
Preferably, the parameters used for the calculation of the fluid geometry model settings include:
performing fluid grid division on the fluid structure model, and endowing fluid material parameters;
adding fluid boundary information to the fluid structure model and setting fluid solving parameters.
Preferably, the performing structural meshing on the fluid structural model specifically includes: dividing body units in an initial state and solving dynamic grid control parameter setting in a calculation process;
the imparting fluid material parameters include imparting compressible fluid material parameters;
the fluid boundary information comprises inlet/outlet boundary conditions and fluid-solid coupling analysis interaction surface definition information of a whole machine fluid model;
the fluid solving parameters comprise transient turbulence calculation formula control parameters, time step control parameters and result output control parameters.
Preferably, the interaction solving parameters comprise a fluid-solid coupling analysis time step control parameter, an interaction surface physical quantity transmission control parameter and a calculation convergence control parameter.
To solve the above technical problem, the present application further provides a vibration degree prediction apparatus for a computer component, including:
the first importing module is used for importing the geometric data of each component of the target computer into a pre-built modeling program to establish a structural geometric model and a fluid geometric model corresponding to the interaction surface;
the second importing module is used for importing the structural geometric model into a pre-constructed structural numerical analysis program and setting parameters used for calculation on the structural geometric model;
the third importing module is used for importing the fluid geometric model into a pre-constructed fluid numerical analysis program and setting parameters used for calculation on the fluid geometric model;
the setting module is used for setting interaction solving parameters of fluid-solid coupling simulation analysis;
the solving module is used for solving the structural geometric model and the fluid geometric model according to the interaction solving parameters to obtain target vibration parameters of each component of the target computer;
and the comparison module is used for comparing the target vibration parameter with a preset vibration parameter upper limit to determine whether the vibration degree of each component meets the requirement.
In order to solve the above technical problems, the present application further provides a vibration degree prediction apparatus for a computer component, including a memory for storing a computer program;
a processor for implementing the steps of the method for predicting the vibration level of the computer component as described when executing the computer program.
To solve the above technical problem, the present application further provides a computer readable storage medium having a computer program stored thereon, which when executed by a processor, implements the steps of the vibration level prediction method of a computer component as described.
The method for predicting the vibration degree of the computer component provided by the application comprises the following steps: the geometric data of each part of the target computer is imported into a pre-built modeling program to establish a structural geometric model and a fluid geometric model corresponding to the interaction surface, the structural geometric model is imported into a pre-built structural numerical analysis program, parameters used for calculation are set for the structural geometric model, the fluid geometric model is imported into the pre-built fluid numerical analysis program, and parameters used for calculation are set for the fluid geometric model. Setting interactive solving parameters of fluid-solid coupling simulation analysis, solving the structural geometric model and the fluid geometric model according to the interactive solving parameters to obtain target vibration parameters of all parts of the target computer, and comparing the target vibration parameters with preset upper limits of the vibration parameters to determine whether the vibration degree of all the parts meets the requirements. Therefore, by adopting the technical scheme, the numerical analysis result of the vibration degree of the component under the dual actions of flow field disturbance caused by heat dissipation of the whole machine and structural excitation caused by rotation of the fan and hardware can be obtained, multiple tests are not needed, the problem of long test period is avoided, the research and development cost and the research and development period of enterprises are reduced, and in addition, compared with methods such as finite difference analysis, finite element analysis and finite body analysis, the method has the advantages that the multiple physical field factors are comprehensive, and the reliability of the result is high.
In addition, the vibration degree prediction device and the computer storage medium of the computer component provided by the application correspond to the method, and have the same effects.
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For a clearer description of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for predicting vibration level of a computer component according to an embodiment of the present application;
FIG. 2 is a flow chart of parameters used in the calculation of structural geometry model settings provided in an embodiment of the present application;
FIG. 3 is a flow chart of parameters used for calculation of fluid geometry model settings provided in an embodiment of the present application;
FIG. 4 is a block diagram of a vibration level predicting apparatus for computer components according to an embodiment of the present application;
fig. 5 is a block diagram of another vibration level predicting apparatus for computer components according to an embodiment of the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments herein without making any inventive effort are intended to fall within the scope of the present application.
The core of the application is to provide a method, a device and a medium for predicting the vibration degree of a computer component.
In order to provide a better understanding of the present application, those skilled in the art will now make further details of the present application with reference to the drawings and detailed description.
Fig. 1 is a flowchart of a method for predicting vibration degrees of computer components according to an embodiment of the present application. As shown in fig. 1, the method includes:
s10: the geometric data of each part of the target computer is imported into a pre-built modeling program to build a structural geometric model and a fluid geometric model corresponding to the interaction surface.
In this embodiment, the interactive surface includes corresponding surfaces where the fluid contacts the structure and the corresponding surfaces are respectively associated with the fluid and the structure but have the same shape and position. It can be understood that the pre-constructed modeling program can be Space class, which is widely applied to the international industrial field for new generation 3D high-efficiency modeling software, so that the product design period is obviously shortened, the model processing quality and efficiency of CAE analysis are greatly improved, and brand-new product design experience is brought to users.
In the process of computer development, a designer generates a complete machine geometric model containing detailed features of components according to development requirements, and then gives the complete machine geometric model to an analysis engineer for performance evaluation analysis. In this embodiment, the geometric data is CATIA. To simplify the subsequent calculation process, before building the structural geometry model and the fluid geometry model, the method further comprises: the geometric data is simplified according to a pre-stored simplification rule. The simplification rule is to simplify the detail features and components with less influence on analysis results, then generate flow field data by using an enclosure function, and finally correct the structural geometric data and the fluid geometric data appropriately to obtain a structural geometric model and a fluid geometric model.
S11: the structural geometric model is imported into a pre-constructed structural numerical analysis program, and parameters used for calculation are set for the structural geometric model.
The pre-constructed structure numerical analysis program in this embodiment may be implemented by a Transient Structural module under the ANSYS workberch platform. It can be understood that the parameters used for the calculation corresponding to the geometric model of the structure can be determined according to the actual situation, which is not limited in this embodiment.
S12: the fluid geometric model is imported into a pre-constructed fluid numerical analysis program, and parameters used for calculation are set for the fluid geometric model.
It should be noted that, the steps S11 and S12 are not strictly sequential, and the step S11 may be executed first and then the step S12 may be executed first, or the step S12 may be executed first and then the step S11 may be executed.
The pre-constructed fluid data analysis program in this embodiment may be implemented by a Fluent module under the ANSYS workbernch platform. It will be appreciated that the parameters used for the calculation corresponding to the fluid geometric model may be determined according to the actual situation, which is not limited in this embodiment.
S13: and setting interactive solving parameters of fluid-solid coupling simulation analysis.
In a specific embodiment, interactive solution parameters of the fluid-solid Coupling simulation analysis can be set in a System Coupling module, and the solution can be calculated. It can be appreciated that the interaction solving parameters need to be determined according to practical situations, and the embodiment is not limited.
S14: and solving the structural geometric model and the fluid geometric model according to the interaction solving parameters to obtain the target vibration parameters of each component of the target computer.
In particular implementations, POST-processing of results and engineering interpretation can be performed in both the Mechanical module and the CFD-POST module. In the post-processing of the result, the vibration degree of the component is judged by generating an acceleration curve of a central non-deformation area of the component, and then the target vibration parameters of the components are obtained.
S15: the target vibration parameter is compared with a preset upper limit of the vibration parameter to determine whether the vibration degree of each component meets the requirement.
It should be noted that, for different components, the vibration frequency and the vibration amplitude have a certain correspondence, and after the target vibration parameter is obtained, the vibration frequency and the vibration amplitude of the corresponding component need to be determined, for example, the target vibration parameter is a vibration parameter of hardware, and if the target vibration parameter exceeds the upper limit, it is indicated that the vibration degree of the hard disk is severe and does not meet the requirement. Furthermore, the stress-strain cloud image and the flow field vector image or the flow field image of the whole machine structure can be utilized to position the reason of vibration generation and provide an optimal design scheme.
In other embodiments, an alarm signal may be output when it is determined that the vibration level is not satisfactory.
The vibration degree prediction method of the computer component provided in the embodiment includes: the geometric data of each part of the target computer is imported into a pre-built modeling program to establish a structural geometric model and a fluid geometric model corresponding to the interaction surface, the structural geometric model is imported into a pre-built structural numerical analysis program, parameters used for calculation are set for the structural geometric model, the fluid geometric model is imported into the pre-built fluid numerical analysis program, and parameters used for calculation are set for the fluid geometric model. Setting interactive solving parameters of fluid-solid coupling simulation analysis, solving the structural geometric model and the fluid geometric model according to the interactive solving parameters to obtain target vibration parameters of all parts of the target computer, and comparing the target vibration parameters with preset upper limits of the vibration parameters to determine whether the vibration degree of all the parts meets the requirements. Therefore, by adopting the technical scheme, the numerical analysis result of the vibration degree of the component under the dual actions of flow field disturbance caused by heat dissipation of the whole machine and structural excitation caused by rotation of the fan and hardware can be obtained, multiple tests are not needed, the problem of long test period is avoided, the research and development cost and the research and development period of enterprises are reduced, and in addition, compared with methods such as finite difference analysis, finite element analysis and finite body analysis, the method has the advantages that the multiple physical field factors are comprehensive, and the reliability of the result is high.
Fig. 2 is a flowchart of parameters used for setting calculation of a structural geometric model according to an embodiment of the present application. As shown in fig. 2, the method comprises the following steps:
s20: structural meshing is performed on the geometric structure model, and structural material parameters and structural attributes are given.
As a preferred embodiment, when structural meshing the geometric model, beam cell meshing at the component axis position, shell cell meshing at the component mid-plane position, and volume cell meshing at the component space position may be performed. The parameters of the structural material include: the imparting of the elastoplastic material parameters or of the rigid material parameters, the imparting of the structural properties specifically include: section or thickness information and grid cell mathematical constitutive types are given. When the structural grid is divided, the target size of the unit is 4mm, the critical area is 2mm, the shell unit is preferably in the shape of a regular quadrangle, and the body unit is preferably in the shape of a regular hexahedron. Preferably, the cushioning component imparts a superelastic material parameter, the non-cushioning component imparts an elastic material, and the connecting component imparts a rigid material.
S21: and establishing a structural connection relation and a structural contact relation among all the components in the geometric structure model.
Wherein the structural connection relationship comprises rigid connection without relative movement and joint connection with freedom of movement. The structural contact relationship includes a relatively penetrating component contact relationship and a relatively moving constraining contact relationship. In general, the connection relation between structural members is rigid connection, and the joint of the outer wall of the case and the sliding rail is joint connection with freedom of movement, namely full constraint of the freedom.
S22: and adding structural boundary information to the geometric structure model and setting structural solving parameters.
The structure boundary information comprises motion freedom constraint information, vibration load excitation information and fluid-solid coupling analysis interaction surface definition information which are subjected to a complete machine structure model. The structure solving parameters comprise transient structure calculation formula control parameters, time step control parameters and result output control parameters. And the working state vibration load excitation information measured by the prior single body vibration test is applied to each fan and the hard disk mounting position.
Fig. 3 is a flowchart of parameters used for calculating the fluid geometric model according to an embodiment of the present application. As shown in fig. 3, the method comprises the following steps:
s30: fluid meshing is performed on the fluid structure model, and fluid material parameters are given.
The structural grid division of the fluid structural model specifically comprises the following steps: and (3) dividing the volume units in the initial state and solving the dynamic grid control parameter setting in the calculation process. When dividing the fluid grid, the target size of the unit is 4mm, the key area is 1mm, the body unit is regular tetrahedron grid, and the smoothening and remeshing options under the Dynamic Mesh are selected and the corresponding setting and area selection are carried out. The fluid material property is a property of air at room temperature, and in particular, imparting a fluid material parameter includes imparting a compressible fluid material parameter.
S31: adding fluid boundary information to the fluid structure model and setting fluid solving parameters.
The fluid boundary information comprises inlet/outlet boundary conditions and fluid-solid coupling analysis interaction surface definition information of the whole machine fluid model. The fluid solving parameters comprise transient turbulence calculation formula control parameters, time step control parameters and result output control parameters. In one implementation, the inlet boundary condition is the fan operating state air intake, and the outlet boundary condition is 0Pa pressure. Preferably, the calculation model selects k-epsilon realizable enchanted wall treatment, the solving mode selects coupled, and the initializing mode selects hybrid.
On the basis of the embodiment, the interaction solving parameters comprise a fluid-solid coupling analysis time step control parameter, an interaction surface physical quantity transmission control parameter and a calculation convergence control parameter. Specifically, the simulated time may be set to 0.2s and the fluid-solid coupling analysis time step control parameter may be set to 5s-7s. The physical quantity transmission control parameters of the interaction surface mainly represent that the structural surface at the interaction surface transmits displacement data to the corresponding fluid surface, and the fluid surface transmits pressure data to the corresponding structural surface, so that the physical quantity transmission control parameters can be determined according to actual conditions.
In the above embodiments, the method for predicting the vibration level of the computer component is described in detail, and the present application also provides the corresponding embodiments of the device for predicting the vibration level of the computer component. It should be noted that the present application describes an embodiment of the device portion from two angles, one based on the angle of the functional module and the other based on the angle of the hardware.
Fig. 4 is a block diagram of a vibration level predicting apparatus for a computer component according to an embodiment of the present application. As shown in fig. 4, the apparatus includes:
the first importing module 10 is used for importing the geometric data of each component of the target computer into a pre-constructed modeling program to establish a structural geometric model and a fluid geometric model corresponding to the interaction surface;
a second importing module 11, configured to import the structural geometric model into a pre-constructed structural numerical analysis program, and set parameters used for calculation for the structural geometric model;
a third importing module 12, configured to import the fluid geometric model into a pre-constructed fluid numerical analysis program, and set parameters used for calculation on the fluid geometric model;
the setting module 13 is used for setting interaction solving parameters of fluid-solid coupling simulation analysis;
the solving module 14 is used for solving the structural geometric model and the fluid geometric model according to the interaction solving parameters to obtain target vibration parameters of each component of the target computer;
and the comparison module 15 is used for comparing the target vibration parameter with a preset upper limit of the vibration parameter to determine whether the vibration degree of each component meets the requirement.
Since the embodiments of the apparatus portion and the embodiments of the method portion correspond to each other, the embodiments of the apparatus portion are referred to the description of the embodiments of the method portion, and are not repeated herein.
The vibration degree prediction apparatus for a computer component provided in this embodiment firstly introduces geometric data of each component of a target computer into a pre-built modeling program to establish a structural geometric model and a fluid geometric model corresponding to an interaction surface, then introduces the structural geometric model into a pre-built structural numerical analysis program, and sets parameters used for calculation for the structural geometric model, and introduces the fluid geometric model into the pre-built fluid numerical analysis program, and sets parameters used for calculation for the fluid geometric model. And setting interactive solving parameters of fluid-solid coupling simulation analysis, finally solving the structural geometric model and the fluid geometric model according to the interactive solving parameters to obtain target vibration parameters of all parts of the target computer, and comparing the target vibration parameters with preset upper limits of the vibration parameters to determine whether the vibration degree of all the parts meets the requirements. Therefore, by adopting the technical scheme, the numerical analysis result of the vibration degree of the component under the dual actions of flow field disturbance caused by heat dissipation of the whole machine and structural excitation caused by rotation of the fan and hardware can be obtained, multiple tests are not needed, the problem of long test period is avoided, the research and development cost and the research and development period of enterprises are reduced, and in addition, compared with methods such as finite difference analysis, finite element analysis and finite body analysis, the method has the advantages that the multiple physical field factors are comprehensive, and the reliability of the result is high.
Fig. 5 is a block diagram of another vibration level predicting apparatus for computer components according to an embodiment of the present application. As shown in fig. 5, a vibration level predicting apparatus of a computer component includes a memory 20 for storing a computer program;
the processor 21 is configured to execute the computer program to implement the steps of the method for predicting the vibration level of the computer component according to the above-described method embodiment.
The vibration degree prediction device of the computer component provided in the present embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, a desktop computer, or the like.
Processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 21 may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ). The processor 21 may also comprise a main processor, which is a processor for processing data in an awake state, also called CPU (Central Processing Unit ); a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 21 may integrate a GPU (Graphics Processing Unit, image processor) for rendering and drawing of content required to be displayed by the display screen. In some embodiments, the processor 21 may also include an AI (Artificial Intelligence ) processor for processing computing operations related to machine learning.
Memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In the present embodiment, the memory 20 is at least used for storing a computer program 201 capable of implementing the relevant steps of the method for predicting the vibration level of a computer component disclosed in any one of the foregoing embodiments, after the computer program is loaded and executed by the processor 21. In addition, the resources stored in the memory 20 may further include an operating system 202, data 203, and the like, where the storage manner may be transient storage or permanent storage. The operating system 202 may include Windows, unix, linux, among others. The data 203 may include, but is not limited to, the data mentioned above, and the like.
In some embodiments, diagnostic device 20 may further include a display 22, an input-output interface 23, a communication interface 22, a power supply 25, and a communication bus 26.
It will be appreciated by those skilled in the art that the configuration shown in fig. 5 does not constitute a limitation of the vibration level predicting device for computer components, and may include more or less components than those illustrated.
The vibration degree prediction device for the computer component provided by the embodiment of the application comprises a memory and a processor, wherein the processor can realize the steps described in the embodiment of the method when executing a program stored in the memory. Therefore, by adopting the technical scheme, the numerical analysis result of the vibration degree of the component under the dual actions of flow field disturbance caused by heat dissipation of the whole machine and structural excitation caused by rotation of the fan and hardware can be obtained, multiple tests are not needed, the problem of long test period is avoided, the research and development cost and the research and development period of enterprises are reduced, and in addition, compared with methods such as finite difference analysis, finite element analysis and finite body analysis, the method has the advantages that the multiple physical field factors are comprehensive, and the reliability of the result is high.
Finally, the present application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps as described in the method embodiments above.
It will be appreciated that the methods of the above embodiments, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored on a computer readable storage medium. With such understanding, the technical solution of the present application, or a part contributing to the prior art or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, performing all or part of the steps of the method described in the various embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The computer readable storage medium provided in this embodiment can implement the steps in the above method embodiment when the stored computer program is executed, so that it can be seen that, by adopting the technical scheme, the numerical analysis result of the component vibration degree under the dual effects of flow field disturbance caused by heat dissipation of the whole machine and structural excitation caused by rotation of the fan and hardware can be obtained, multiple tests are not needed, the problem of long test period is avoided, the research and development cost and research period of enterprises are reduced, and in addition, compared with methods such as finite difference analysis, finite element analysis, finite body analysis, and the like, the multiple physical field factors considered in the analysis of the method are comprehensive, and the result reliability is high.
The method, the device and the medium for predicting the vibration degree of the computer component provided by the application are described in detail above. In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A method of predicting vibration level of a computer component, comprising:
importing the geometric data of each part of a target computer into a pre-constructed modeling program to establish a structural geometric model and a fluid geometric model corresponding to the interaction surface;
the structural geometric model is imported into a pre-constructed structural numerical analysis program, and parameters used for calculation are set for the structural geometric model;
the fluid geometric model is imported into a pre-constructed fluid numerical analysis program, and parameters used for calculation are set for the fluid geometric model;
setting interactive solving parameters of fluid-solid coupling simulation analysis;
solving the structural geometric model and the fluid geometric model according to the interaction solving parameters to obtain target vibration parameters of all parts of the target computer;
comparing the target vibration parameter with a preset vibration parameter upper limit to determine whether the vibration degree of each component meets the requirement;
wherein the parameters used for the structural geometric model setting calculation include: performing structural grid division on the structural geometric model, and endowing structural material parameters and structural attributes; establishing a structural connection relationship and a structural contact relationship between the components in the structural geometric model; adding structure boundary information to the structure geometric model and setting structure solving parameters;
the parameters used for the calculation of the fluid geometry model settings include: performing fluid grid division on the fluid geometric model, and endowing fluid material parameters; adding fluid boundary information to the fluid geometric model and setting fluid solving parameters.
2. The method of predicting vibration level of a computer component of claim 1, further comprising, prior to building the structural geometric model and the fluid geometric model:
and simplifying the geometric data according to a pre-stored simplifying rule.
3. The method for predicting vibration level of computer component of claim 1, wherein said structural meshing of said structural geometric model specifically comprises:
grid dividing beam units positioned at the axis positions of the parts, shell unit grid dividing shell units positioned at the middle surface positions of the parts and body unit grid dividing body unit occupying the space positions of the parts;
the parameters of the structural material include: imparting parameters to an elastoplastic material or imparting parameters to a rigid material;
the imparting structural attributes specifically include: giving section or thickness information and mathematical constitutive types of grid cells;
the structural connection relation comprises rigid connection without relative movement and joint connection with freedom of movement;
the structural contact relationship includes a relatively penetrating component contact relationship and a relatively moving constraining contact relationship;
the structure boundary information comprises motion freedom constraint information, vibration load excitation information and fluid-solid coupling analysis interaction surface definition information which are subjected to a complete machine structure model;
the structure solving parameters comprise transient structure calculation formula control parameters, time step control parameters and result output control parameters.
4. The method for predicting vibration level of computer component of claim 1, wherein said structural meshing of said fluid geometric model specifically comprises: dividing body units in an initial state and solving dynamic grid control parameter setting in a calculation process;
the imparting fluid material parameters include imparting compressible fluid material parameters;
the fluid boundary information comprises inlet/outlet boundary conditions and fluid-solid coupling analysis interaction surface definition information of a whole machine fluid model;
the fluid solving parameters comprise transient turbulence calculation formula control parameters, time step control parameters and result output control parameters.
5. The method of claim 1, wherein the interaction solving parameters include a fluid-solid coupling analysis time step control parameter, an interaction surface physical quantity transfer control parameter, and a calculation convergence control parameter.
6. A vibration level predicting apparatus of a computer component, comprising:
the first importing module is used for importing the geometric data of each component of the target computer into a pre-built modeling program to establish a structural geometric model and a fluid geometric model corresponding to the interaction surface;
the second importing module is used for importing the structural geometric model into a pre-constructed structural numerical analysis program and setting parameters used for calculation on the structural geometric model;
the third importing module is used for importing the fluid geometric model into a pre-constructed fluid numerical analysis program and setting parameters used for calculation on the fluid geometric model;
the setting module is used for setting interaction solving parameters of fluid-solid coupling simulation analysis;
the solving module is used for solving the structural geometric model and the fluid geometric model according to the interaction solving parameters to obtain target vibration parameters of each component of the target computer;
the comparison module is used for comparing the target vibration parameter with a preset vibration parameter upper limit to determine whether the vibration degree of each component meets the requirement;
wherein the parameters used for the structural geometric model setting calculation include: performing structural grid division on the structural geometric model, and endowing structural material parameters and structural attributes; establishing a structural connection relationship and a structural contact relationship between the components in the structural geometric model; adding structure boundary information to the structure geometric model and setting structure solving parameters;
the parameters used for the calculation of the fluid geometry model settings include: performing fluid grid division on the fluid geometric model, and endowing fluid material parameters; adding fluid boundary information to the fluid geometric model and setting fluid solving parameters.
7. A vibration level predicting apparatus of a computer component, comprising a memory for storing a computer program;
a processor for implementing the steps of the vibration level predicting method of the computer component according to any one of claims 1 to 5 when executing the computer program.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the vibration level prediction method of a computer component according to any one of claims 1 to 5.
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