A method, apparatus, equipment, and medium for extracting plastic strain from the seismic response of a server rack.

Abstract

This invention belongs to the field of frequency domain seismic simulation analysis technology for computer cabinets. Specifically, it provides a method, device, equipment, and medium for extracting plastic strain from the seismic response of a computer cabinet. The method includes: the displacement field of the computer cabinet under a set response spectrum; extracting the displacement results of all unit nodes of the cabinet and storing them locally; processing the displacement result file; copying the original finite element model to generate a new calculation model; resetting the analysis step of the new calculation model to static analysis and adding plastic material parameters to the material; defining a discrete field; importing the data file after processing the displacement results into the new calculation model to generate a discrete field; applying displacement boundary constraints to all nodes of the cabinet in the new calculation model; and, after receiving the set trigger information, calculating and extracting the plastic index of the cabinet at the most dangerous moment during the seismic experiment. The displacement results are processed and assigned to the new model through the definition of a discrete field, reducing testing costs.

Description

Technical Field

[0001] This invention relates to the field of frequency domain seismic simulation analysis technology for server racks, specifically providing a method, apparatus, equipment, and medium for extracting plastic strain from the seismic response of server racks. Background Technology

[0002] With the increasing application of cloud computing and big data, higher and higher demands are being placed on the stability of hardware and electronic devices that provide computing and analysis. The seismic stability of the server racks housing these devices is a crucial aspect. Traditionally, server racks are verified to meet seismic requirements through earthquake tests. However, physical testing is expensive; for example, a single earthquake test on a 44U server rack can cost over 200,000 yuan. In an era focused on cost reduction and efficiency improvement, using simulation methods to evaluate the seismic resistance of server racks is particularly necessary.

[0003] Currently, there are two methods for earthquake simulation analysis: the time-domain method and the frequency-domain method. The time-domain method involves directly applying earthquake time-domain signals to the rack installation location for dynamic simulation. The frequency-domain method, also known as the response spectrum method, first calculates the maximum response of a single-degree-of-freedom oscillator system under seismic load at different natural frequencies, obtaining the response spectrum, which is the curve of the maximum response varying with frequency. Simultaneously, the large rack model is decomposed into numerous independent spring oscillator systems (each principal mode shape). Based on the response spectrum, modal vibration participation factor, and mode shape, the response values ​​of each node for each mode shape are calculated. Finally, the response values ​​are merged according to a specific method.

[0004] Time-domain simulations can account for material nonlinearity and component contact, offering high accuracy. However, for complex models, they are extremely time-consuming; a time-domain simulation of a single server rack can often take nearly 30 days to produce results, negating the purpose of the simulation. Frequency-domain simulations offer fast response times, calculating results for a server rack in just a few hours, and achieving over 95% accuracy for maximum displacement simulations. However, their drawback is that, being based on modal superposition, they cannot consider material plasticity and component contact. Extracting material plasticity parameters is an effective way to assess structural susceptibility to failure. The server rack is made of steel, a typical elasto-plastic material. Simulations that cannot extract plasticity parameters during seismic events are undoubtedly meaningless. Summary of the Invention

[0005] Since the frequency domain method is based on the modal superposition method, it cannot consider the plasticity of the material and the contact between components. Extracting the plasticity index of the material is one of the effective ways to determine whether a structure is susceptible to damage. The cabinet is made of steel, a typical elasto-plastic material. Simulations that cannot extract the plasticity index of the cabinet during an earthquake are undoubtedly meaningless. This invention provides a method, apparatus, equipment, and medium for extracting the plastic strain of a cabinet's seismic response.

[0006] In a first aspect, the present invention provides a method for extracting the plastic strain of a server rack in seismic response, comprising the following steps:

[0007] Extract the displacement results of all unit nodes in the cabinet and store them locally;

[0008] Process the locally stored displacement results;

[0009] The original finite element model is copied to generate a new calculation model. The data file after processing the displacement results is imported into the new calculation model, and the new calculation model is configured.

[0010] After receiving the trigger information indicating that the setup is complete, the new calculation model performs calculations and extracts the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

[0011] The displacement result calculated using the frequency domain method is extracted, processed into a suitable format, and assigned to a new calculation model through discrete field definition. Simulation analysis enables rapid and accurate identification of the cabinet's seismic resistance level and risks, achieving simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0012] As a further limitation of the technical solution of the present invention, the step of extracting the displacement results of all unit nodes of the cabinet and storing them locally includes:

[0013] The displacement field of the computer cabinet under the set response spectrum.

[0014] As a further limitation of the technical solution of the present invention, the step of processing the locally stored displacement results includes:

[0015] Open the locally stored displacement result file using an Excel spreadsheet;

[0016] Change the data formatting and node names in an Excel spreadsheet;

[0017] After making the changes, save the displacement result file as a .txt file to your local folder.

[0018] As a further limitation of the technical solution of the present invention, in the step of opening the locally stored displacement result file using an Excel spreadsheet, the left side of the displacement result file is the node number, and the right side columns are the displacements of the nodes in six directions.

[0019] As a further limitation of the technical solution of the present invention, the steps of changing the arrangement format and node names of data in an Excel spreadsheet include:

[0020] Add a prefix to the node number, where the prefix is ​​the instance name of the cabinet in the finite element model;

[0021] Adjust the middle column to display the element node degree of freedom numbers, and the last column to display the displacement values ​​for each degree of freedom.

[0022] As a further limitation of the technical solution of this invention, the steps of copying the original finite element model to generate a new calculation model, importing the data file after processing the displacement results into the new calculation model, and setting up the new calculation model include:

[0023] The new computational model is reset to a static analysis step, and plastic material parameters are added to the material.

[0024] Define a discrete field, import the data file after processing the displacement results into the new calculation model, and generate the discrete field.

[0025] As a further limitation of the technical solution of the present invention, after defining a discrete field and importing the data file after processing the displacement results into a new calculation model to generate the discrete field, the method further includes:

[0026] Apply displacement boundary constraints to all nodes of the cabinet in the new computational model.

[0027] Secondly, the technical solution of the present invention also provides a cabinet seismic response plastic strain extraction device, including a displacement result extraction module, a result processing module, a model setting module, a file import module, and a calculation extraction module;

[0028] The displacement result extraction module is used to extract the displacement results of all unit nodes in the cabinet and store them locally.

[0029] The result processing module is used to process the displacement results stored locally.

[0030] The model setup module is used to copy the original finite element model to generate a new computational model and to set the new computational model.

[0031] The file import module is used to import data files after processing displacement results into a new calculation model.

[0032] The calculation extraction module is used to perform calculations after the new calculation model receives the trigger information that has been set up. The calculation extracts the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

[0033] As a further limitation of the technical solution of the present invention, the device also includes a displacement field calculation module for the displacement field of the computer cabinet under a set response spectrum.

[0034] As a further limitation of the technical solution of the present invention, the step of processing the locally stored displacement results includes:

[0035] The results processing module is specifically used to open the locally stored displacement result file using an Excel spreadsheet; change the data arrangement format and node names in the Excel spreadsheet; and save the displacement result file as a .txt file to the local folder after making the changes.

[0036] The displacement results file is opened using an Excel spreadsheet. The left side shows the node numbers, and the right side columns show the displacements of the nodes in six directions.

[0037] As a further limitation of the technical solution of the present invention, the result processing module is also used to add a prefix to the node number, wherein the prefix is ​​the instance name of the cabinet in the finite element model; adjust the middle column to the element node degree of freedom number, and the data in the last column is the displacement value under each degree of freedom.

[0038] As a further limitation of the technical solution of the present invention, the model setting module is used to reset the analysis step of the new calculation model to static analysis, add plastic material parameters to the material; define the discrete field, and import the data file after processing the displacement results into the new calculation model to generate the discrete field.

[0039] As a further limitation of the technical solution of the present invention, the model setting module is also used to apply displacement boundary constraints to all nodes of the cabinet in the new calculation model.

[0040] The displacement result calculated using the frequency domain method is extracted, processed into a suitable format, and assigned to a new calculation model through discrete field definition. Simulation analysis enables rapid and accurate identification of the cabinet's seismic resistance level and risks, achieving simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0041] Thirdly, the present invention also provides an electronic device, characterized in that the electronic device comprises:

[0042] At least one processor; and,

[0043] A memory communicatively connected to the at least one processor; wherein,

[0044] The memory stores computer program instructions that can be executed by at least one processor to enable the at least one processor to perform the cabinet seismic response plastic strain extraction method as described in the first aspect.

[0045] The displacement result calculated using the frequency domain method is extracted, processed into a suitable format, and assigned to a new calculation model through discrete field definition. Simulation analysis enables rapid and accurate identification of the cabinet's seismic resistance level and risks, achieving simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0046] Fourthly, the present invention also provides a non-transitory computer-readable storage medium storing computer instructions that cause the computer to execute the cabinet seismic response plastic strain extraction method as described in the first aspect.

[0047] As can be seen from the above technical solutions, the present invention has the following advantages: extracting the frequency domain calculation result—displacement, processing the displacement result into a suitable format, and assigning it to the new model through the discrete field definition.

[0048] Simulation analysis can quickly and accurately identify the seismic resistance level and risks of server racks, enabling simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0049] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects.

[0050] Therefore, it is evident that the present invention has outstanding substantive features and significant progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a schematic flowchart of a method according to an embodiment of the present invention.

[0053] Figure 2 This is a partial view of the displacement result file opened using an Excel spreadsheet, according to one embodiment of the present invention.

[0054] Figure 3 This is a partial view of a table after processing the displacement result file, according to an embodiment of the present invention.

[0055] Figure 4This is a schematic block diagram of an apparatus according to an embodiment of the present invention. Detailed Implementation

[0056] Currently, there are two methods for earthquake simulation analysis: the time-domain method and the frequency-domain method. The time-domain method involves directly applying earthquake time-domain signals to the rack installation location for dynamic simulation. The frequency-domain method, also known as the response spectrum method, first calculates the maximum response of a single-degree-of-freedom oscillator system under seismic load at different natural frequencies, obtaining the response spectrum, which is the curve of the maximum response varying with frequency. Simultaneously, the large rack model is decomposed into numerous independent spring oscillator systems (each principal mode shape). Based on the response spectrum, modal vibration participation factor, and mode shape, the response values ​​of each node for each mode shape are calculated. Finally, the response values ​​are merged according to a specific method.

[0057] Time-domain simulation can consider material nonlinearity and component contact, resulting in high simulation accuracy. However, for complex models, it is extremely time-consuming; a time-domain simulation of a single server rack often takes nearly 30 days to produce results, thus defeating the purpose of the simulation. Frequency-domain simulation has a fast response speed, calculating results for a server rack in just a few hours, and achieving over 95% accuracy for maximum displacement simulations. However, its drawback is that, since it is based on modal superposition, it cannot consider material plasticity and component contact. Extracting material plasticity indices is one of the effective ways to determine whether a structure is susceptible to damage. The server rack is made of steel, a typical elasto-plastic material. Simulations that cannot extract plasticity indices during earthquakes are undoubtedly meaningless. To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0058] This invention provides a method for extracting plastic strain from the seismic response of a server rack, comprising the following steps:

[0059] Step 1: Extract the displacement results of all unit nodes in the cabinet and store them locally;

[0060] Step 2: Process the locally stored displacement results;

[0061] Step 3: Copy the original finite element model to generate a new calculation model, import the data file after processing the displacement results into the new calculation model, and set the new calculation model.

[0062] Step 4: After receiving the trigger information indicating that the setup is complete, the new calculation model performs calculations and extracts the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

[0063] The displacement result calculated using the frequency domain method is extracted, processed into a suitable format, and assigned to a new calculation model through discrete field definition. Simulation analysis enables rapid and accurate identification of the cabinet's seismic resistance level and risks, achieving simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0064] like Figure 1 As shown in the figure, an embodiment of the present invention provides a method for extracting plastic strain in the seismic response of a server rack, comprising the following steps:

[0065] S1: Displacement field of the computer cabinet under the set response spectrum;

[0066] S2: Extract the displacement results of all unit nodes in the cabinet and store them locally;

[0067] S3: Process the locally stored displacement results;

[0068] S4: Copy the original finite element model to generate a new calculation model, import the data file after processing the displacement results into the new calculation model, and set the new calculation model;

[0069] S5: After receiving the trigger information indicating that the setup is complete, the new calculation model performs calculations and extracts the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

[0070] The displacement result calculated using the frequency domain method is extracted, processed into a suitable format, and assigned to a new calculation model through discrete field definition. Simulation analysis enables rapid and accurate identification of the cabinet's seismic resistance level and risks, achieving simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0071] This invention provides a method for extracting plastic strain from the seismic response of a server rack, comprising the following steps:

[0072] SS1: Displacement field of the computer cabinet under the set response spectrum;

[0073] SS2: Extract the displacement results of all unit nodes in the cabinet and store them locally;

[0074] SS3: Open the locally stored displacement result file using an Excel spreadsheet;

[0075] SS4: Change the data arrangement format and node names in an Excel spreadsheet; after making the changes, save the displacement result file as a .txt file to a local folder.

[0076] SS5: Copy the original finite element model and generate a new calculation model; ensure that the instance name of the cabinet in the new calculation model remains unchanged;

[0077] SS6: Reset the analysis step of the new calculation model to static analysis and add plastic material parameters to the material;

[0078] SS7: Define discrete fields by importing the data file after processing the displacement results into the new calculation model to generate discrete fields;

[0079] SS8: Apply displacement boundary constraints to all nodes of the cabinet in the new computational model;

[0080] SS9: After receiving the trigger information indicating that the setup is complete, the new calculation model performs calculations and extracts the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

[0081] It should be noted that when opening the locally stored displacement result file using an Excel spreadsheet, the left side of the file displays the node numbers, and the right-hand columns show the displacements of the nodes in the six directions.

[0082] The steps to change the data arrangement format and node names in an Excel spreadsheet include: adding a prefix to the node numbers, where the prefix is ​​the instance name of the cabinet in the finite element model; adjusting the middle column to display the element node degree of freedom numbers, and the last column to display the displacement values ​​under each degree of freedom.

[0083] The displacement result calculated using the frequency domain method is extracted, processed into a suitable format, and assigned to a new calculation model through discrete field definition. Simulation analysis enables rapid and accurate identification of the cabinet's seismic resistance level and risks, achieving simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0084] This invention provides a method for extracting plastic strain from the seismic response of a server rack, comprising the following steps:

[0085] 1. Using the ABAQUS software, calculate the displacement field of the computer cabinet under a specific response spectrum according to the response spectrum method procedure;

[0086] 2. Extract the displacement results of all unit nodes of the cabinet from the post-processing results and output them to a local folder;

[0087] 3. Open the displacement result file using an Excel spreadsheet, such as... Figure 2 As shown, the left side represents the node number, and the right side columns represent the displacement of the node in six directions.

[0088] 4. Change the data arrangement format and node names in the existing table, such as... Figure 3As shown, the node numbers need to be prefixed with PART-1-1. This prefix represents the instance name of the cabinet in the finite element model. The middle column shows the element node degrees of freedom numbers, with U1 to U6 numbered 1-6. The last column contains the displacement values ​​for each degree of freedom. After adjustment, save this file as a .txt file to your local folder.

[0089] 5. Copy the original finite element model and generate a new computational model;

[0090] 6. Ensure that the instance name of the cabinet in the new computing model (model-copy) remains PART-1-1;

[0091] 7. Reset the analysis step of the new calculation model to static analysis and add plastic material parameters to the material;

[0092] 8. Define the discrete field by importing the data file generated in step 4;

[0093] 9. Apply displacement boundary constraints to all nodes of the cabinet in the new calculation model;

[0094] 10. After all settings are completed, click the OK button to submit the calculation. Once completed, the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment can be extracted.

[0095] The displacement result calculated using the frequency domain method is extracted, processed into a suitable format, and assigned to a new calculation model through discrete field definition. Simulation analysis enables rapid and accurate identification of the cabinet's seismic resistance level and risks, achieving simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0096] This invention also provides a device for extracting plastic strain from the seismic response of a server rack, comprising a displacement result extraction module, a result processing module, a model setting module, a file import module, and a calculation extraction module;

[0097] The displacement result extraction module is used to extract the displacement results of all unit nodes in the cabinet and store them locally.

[0098] The result processing module is used to process the displacement results stored locally.

[0099] The model setup module is used to copy the original finite element model to generate a new computational model and to set the new computational model.

[0100] The file import module is used to import data files after processing displacement results into a new calculation model.

[0101] The calculation extraction module is used to perform calculations after the new calculation model receives the trigger information that has been set up. The calculation extracts the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

[0102] The displacement result calculated using the frequency domain method is extracted, processed into a suitable format, and assigned to a new calculation model through discrete field definition. Simulation analysis enables rapid and accurate identification of the cabinet's seismic resistance level and risks, achieving simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0103] like Figure 4 As shown, this embodiment of the invention also provides a cabinet seismic response plastic strain extraction device, including a displacement field calculation module, a displacement result extraction module, a result processing module, a model setting module, a file import module, and a calculation extraction module;

[0104] The displacement field calculation module is used to calculate the displacement field of the computer cabinet under a set response spectrum.

[0105] The displacement result extraction module is used to extract the displacement results of all unit nodes in the cabinet and store them locally.

[0106] The result processing module is used to process the displacement results stored locally.

[0107] The model setup module is used to copy the original finite element model to generate a new computational model and to set the new computational model.

[0108] The file import module is used to import data files after processing displacement results into a new calculation model.

[0109] The calculation extraction module is used to perform calculations after the new calculation model receives the trigger information that has been set up. The calculation extracts the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

[0110] This invention also provides a device for extracting plastic strain from the seismic response of a server rack, comprising a displacement field calculation module, a displacement result extraction module, a result processing module, a model setting module, a file import module, and a calculation and extraction module;

[0111] The displacement field calculation module is used to calculate the displacement field of the computer cabinet under a set response spectrum.

[0112] The displacement result extraction module is used to extract the displacement results of all unit nodes in the cabinet and store them locally.

[0113] The result processing module is used to process the displacement results stored locally.

[0114] The model setup module is used to copy the original finite element model to generate a new computational model and to set the new computational model.

[0115] The file import module is used to import data files after processing displacement results into a new calculation model.

[0116] The calculation and extraction module is used to perform calculations after the new calculation model receives the set trigger information, and to extract the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment. The device also includes...

[0117] The results processing module is specifically used to open the locally stored displacement result file using an Excel spreadsheet; change the data arrangement format and node names in the Excel spreadsheet; and save the displacement result file as a .txt file to the local folder after making the changes.

[0118] The displacement results file is opened using an Excel spreadsheet. The left side shows the node numbers, and the right side columns show the displacements of the nodes in six directions.

[0119] The results processing module is also used to add a prefix to the node number, which is the instance name of the cabinet in the finite element model; adjust the middle column to the element node degree of freedom number, and the data in the last column is the displacement value under each degree of freedom.

[0120] The model setup module is used to reset the analysis step of the new calculation model to static analysis, add plastic material parameters to the materials, define discrete fields, and generate discrete fields after importing the data file with processed displacement results into the new calculation model. It is also used to apply displacement boundary constraints to all nodes of the cabinet in the new calculation model.

[0121] This invention also provides an electronic device, comprising: a processor, a communication interface, a memory, and a bus, wherein the processor, the communication interface, and the memory communicate with each other via the bus. The bus can be used for information transmission between the electronic device and sensors. The processor can call logical instructions in memory to execute the following methods: SS1: Displacement field of the computer cabinet under the set response spectrum; SS2: Extract displacement results of all unit nodes of the cabinet and store them locally; SS3: Open the locally stored displacement result file using an Excel spreadsheet; SS4: Change the data arrangement format and node names in the Excel spreadsheet; after the changes, save the displacement result file as a .txt file to the local folder; SS5: Copy the original finite element model and generate a new calculation model; ensure that the instance name of the cabinet in the new calculation model remains unchanged; SS6: Reset the analysis step of the new calculation model to static analysis and add plastic material parameters to the material; SS7: Define the discrete field, import the data file after processing the displacement results into the new calculation model, and generate the discrete field; SS8: Apply displacement boundary constraints to all nodes of the cabinet in the new calculation model; SS9: After receiving the trigger information after the setup is completed, the new calculation model performs calculations and extracts the plastic index of the cabinet at the most dangerous moment during the earthquake experiment.

[0122] The displacement result calculated using the frequency domain method is extracted, processed into a suitable format, and assigned to a new calculation model through discrete field definition. Simulation analysis enables rapid and accurate identification of the cabinet's seismic resistance level and risks, achieving simulation-based testing, reducing testing costs, and shortening the R&D cycle.

[0123] Furthermore, the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0124] This invention provides a non-transitory computer-readable storage medium that stores computer instructions that cause a computer to execute the methods provided in the above-described method embodiments. These instructions include, for example: SS1: the displacement field of the computer cabinet under a set response spectrum; SS2: extracting the displacement results of all unit nodes of the cabinet and storing them locally; SS3: opening the locally stored displacement result file using an Excel spreadsheet; SS4: changing the data arrangement format and node names in the Excel spreadsheet; after the changes, renaming the displacement result file to a .txt file and saving it to a local folder; SS5: copying the original finite element model and generating a new calculation model; ensuring that the instance name of the cabinet in the new calculation model remains unchanged; SS6: resetting the analysis step of the new calculation model to static analysis and adding plastic material parameters to the material; SS7: defining a discrete field, importing the data file after processing the displacement results into the new calculation model, and generating a discrete field; SS8: applying displacement boundary constraints to all nodes of the cabinet in the new calculation model; SS9: after receiving the set trigger information, the new calculation model performs calculations, and after the calculations are completed, extracting the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

[0125] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the invention is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the invention by those skilled in the art without departing from the spirit and essence of the invention, and such modifications or substitutions should all be within the scope of the invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the invention should also be covered within the protection scope of the invention. Therefore, the protection scope of the invention should be determined by the scope of the claims.

Claims

1. A method for extracting plastic strain from the seismic response of a server rack, characterized in that, Includes the following steps: The displacement field of the computer cabinet under a set response spectrum is determined using the response spectrum method. Extract the displacement results of all unit nodes in the cabinet and store them locally; Process the locally stored displacement results; Copy the original finite element model to generate a new calculation model, and import the data file after processing the displacement results into the new calculation model. And set up the new calculation model; specifically including: resetting the analysis step of the new calculation model to static analysis, and adding plastic material parameters to the material; Define a discrete field, import the data file after processing the displacement results into the new calculation model to generate a discrete field; apply displacement boundary constraints to all nodes of the cabinet in the new calculation model. After receiving the trigger information indicating that the setup is complete, the new calculation model performs calculations and extracts the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

2. The method for extracting plastic strain from the seismic response of a server rack according to claim 1, characterized in that, The steps for processing locally stored displacement results include: Open the locally stored displacement result file using an Excel spreadsheet; Change the data formatting and node names in an Excel spreadsheet; After making the changes, save the displacement result file as a .txt file to your local folder.

3. The method for extracting plastic strain from the seismic response of a server rack according to claim 2, characterized in that, In the steps of opening the locally stored displacement result file using an Excel spreadsheet, the left side of the displacement result file shows the node numbers, and the right side columns show the displacement of the nodes in the six directions.

4. The method for extracting plastic strain from the seismic response of a server rack according to claim 1, characterized in that, The steps to change the data format and node names in an Excel spreadsheet include: Add a prefix to the node number, where the prefix is ​​the instance name of the cabinet in the finite element model; Adjust the middle column to display the element node degree of freedom numbers, and the last column to display the displacement values ​​for each degree of freedom.

5. A device for extracting plastic strain from the seismic response of a server rack, characterized in that, The apparatus for implementing the method according to any one of claims 1-4 includes a displacement result extraction module, a result processing module, a model setting module, a file import module, and a calculation extraction module; The displacement result extraction module is used to extract the displacement results of all unit nodes in the cabinet and store them locally. The result processing module is used to process the displacement results stored locally. The model setup module is used to copy the original finite element model to generate a new computational model and to set the new computational model. The file import module is used to import data files after processing displacement results into a new calculation model. The calculation extraction module is used to perform calculations after the new calculation model receives the trigger information that has been set up. The calculation extracts the plasticity index of the cabinet at the most dangerous moment during the earthquake experiment.

6. An electronic device, characterized in that, The electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores computer program instructions executable by the at least one processor, the computer program instructions being executed by the at least one processor to enable the at least one processor to perform the cabinet seismic response plastic strain extraction method as described in any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium, characterized in that, The non-transitory computer-readable storage medium stores computer instructions that cause the computer to execute the cabinet seismic response plastic strain extraction method as described in any one of claims 1 to 4.

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