Aseismatic performance evaluation system

Abstract

To enable an evaluation of an aseismatic performance in view of natural frequency of a box for housing electric / electronic apparatus.SOLUTION: An aseismatic performance evaluation system of a box for housing an electric / electronic apparatus includes: frame information input means capable of accepting an input of information on a size, a type, a sideboard, and a door of a frame of a box for housing an electric / electronic apparatus with an electric apparatus or an electronic apparatus installed; internal apparatus input means capable of accepting an input of a selection of an internal apparatus to be installed into a frame and arrangement information of the internal apparatus; a constant value database 21 capable of identifying a constant value used for calculating natural frequency; and calculation means 11 capable of extracting the constant value from the constant value database to calculate the natural frequency of the box for housing an electric / electronic apparatus by computation by using the constant value, information of the frame and information of the internal apparatus.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a seismic performance evaluation system. [Background technology]

[0002] As described in Patent Document 1 and Patent Document 2, a selection system for an electrical equipment storage cabinet is conventionally known that can determine whether electrical equipment and electronic equipment to be installed inside can be arranged and whether wiring space and working space can be secured within the cabinet, in addition to selecting an electrical equipment storage box for storing a server. By using such a system, it is possible to select electronic equipment and electrical equipment to be installed in the electrical equipment storage box using a system used for selecting an electrical equipment storage box. However, in the conventional system, although it is possible to select electrical equipment and electronic equipment to be installed in the electrical equipment storage box, the earthquake resistance performance of the electrical equipment storage box in which they are installed is not taken into consideration. In contrast, Patent Document 3 discloses a system that can determine the strength of anchor bolts for installation using information such as mass. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-068834 A [Patent Document 2] JP 2017-162344 A [Patent Document 3] JP 2021-002104 A

[0004] Incidentally, even in an electrical and electronic equipment storage box in which the same electrical and electronic equipment is mounted, the position of the overall center of gravity changes when the arrangement of the electrical and electronic equipment is changed. As a result, the natural frequency of the electrical and electronic equipment storage box changes depending on the arrangement of the electrical and electronic equipment. Therefore, with only information on the mass, it is not possible to evaluate what kind of displacement (or damage) will occur in the electrical and electronic equipment storage box when a frequency that matches the natural frequency of the electrical and electronic equipment storage box is applied. It is possible to make such an evaluation by ensuring similar conditions and taking actual measurements, but it is not something that can be used casually and repeatedly. Summary of the Invention [Problem to be solved by the invention]

[0005] The inventors of the present invention have made extensive research into this issue and have attempted to solve it. The problem that the present invention aims to solve is to make it possible to evaluate the earthquake resistance performance of a storage box for electric and electronic equipment, taking into account its natural frequency. [Means for solving the problem]

[0006] In order to solve the above problems, a seismic performance evaluation system for electrical and electronic equipment storage boxes is provided, which includes a housing information input means that enables input of information on the size, model, side panels, and doors of the housing of the electrical and electronic equipment storage box that houses electrical equipment or electronic equipment, an internal equipment input means that enables selection of internal equipment to be mounted in the housing and input of information on the layout of the internal equipment, a constant value database that enables identification of constant values ​​used to calculate the natural frequency, and a calculation means that extracts constant values ​​from the constant value database and calculates the natural frequency of the electrical and electronic equipment storage box using the constant values, information on the housing, and information on the internal equipment.

[0007] Also, it is preferable that the calculation means is configured to be capable of identifying the natural frequency by using a relational expression using information on constant values ​​and natural frequencies organized for each model.

[0008] It is also preferable that the vibration condition input means is provided to enable input of earthquake waveform information, and the calculation means is configured to be capable of calculating the amount of displacement of the housing using the input natural frequency of the housing.

[0009] It is also preferable to have a configuration in which the amount of displacement can be specified using a relational expression that uses information on the natural frequency and the amount of displacement organized for each piece of earthquake waveform information.

[0010] Moreover, it is preferable that the calculation means is configured to be capable of determining whether or not the amount of displacement exceeds a predetermined numerical value.

[0011] It is also preferable that information on earthquake waveforms is stored in a vibration condition database, and the calculation means is configured to be able to calculate the amount of displacement of the housing using the information on earthquake waveforms in the vibration condition database and the natural frequency of the housing. Effect of the Invention

[0012] According to the present invention, it is possible to evaluate the earthquake resistance performance of a storage box for electric and electronic equipment, taking into account its natural frequency. [Brief description of the drawings]

[0013] [Figure 1] 1 is a diagram illustrating an overview of a system for evaluating the earthquake resistance performance of an electric / electronic device storage box according to an embodiment. [Diagram 2] 1 is a diagram showing an example of information stored in a housing database, but only relating to basic information about the housing itself; [Diagram 3] 1 is a diagram showing an example of information stored in a housing database, which relates to basic information on housing reassembly specifications. [Figure 4] 1 is a diagram showing an example of information stored in an internal device database, which relates to basic information about internal devices that can be installed inside a housing. [Diagram 5] 1 is a diagram showing an example of information stored in an optional parts database, which relates to basic information about optional parts that can be mounted on a housing. [Figure 6] 1 is a diagram showing an example of information stored in a peripheral component database, which relates to basic information about peripheral components that can be mounted on a housing. [Figure 7] FIG. 13 is a diagram showing an example of the content displayed on the terminal, with the "Rack Body" tab selected. [Figure 8] This is a diagram showing an example of the content displayed on the terminal, with the "Options / Combination" tab selected. [Figure 9] FIG. 13 is a diagram showing an example of the content displayed on the terminal when the "Installed Equipment" tab is selected. [Figure 10] This is a diagram showing an example of the content displayed on the terminal, except that the "Installed Equipment" tab is selected, which is different from the state shown in Fig. 9. [Figure 11] 10 is a diagram showing an example of the contents displayed on the terminal, where it is shown that the conditions can be selected using a pull-down menu in the vibration condition input shown in FIG. [Figure 12] 13 is a diagram showing an example of the content displayed on the terminal, in which the determination result is displayed. [Figure 13] FIG. 13 is a diagram showing an example of a front view of the identified center of gravity position. [Figure 14] FIG. 13 is a diagram showing an example of a plan view of the identified center of gravity position; [Figure 15] This is a general formula that expresses the natural frequency of a material. [Figure 16] This figure shows how the natural frequency is calculated using constant values ​​derived from the housing information, internal equipment information, and a constant value database, and how a judgment is made using the amount of displacement obtained by combining the natural frequency with the vibration conditions. [Figure 17] FIG. 13 is a diagram showing the relationship between a plurality of elements and their natural frequencies. [Figure 18] This is a diagram showing that the natural frequency and constant value are different for each model, where (a) shows information about model A and (b) shows information about model B. [Figure 19]1 is a conceptual diagram showing how a specific natural frequency is applied to a storage box for electrical and electronic equipment having a specific natural frequency to obtain a displacement amount. [Figure 20] This is a conceptual diagram showing how an approximation curve can be obtained based on information on the amount of displacement when a specific natural frequency is applied to a storage box for electrical and electronic equipment having a specific natural frequency, and how this approximation curve can be used to calculate the amount of displacement when the box has a specific natural frequency. [Figure 21] FIG. 11 is a diagram showing an example in which a value (amount of displacement) used for judgment is determined for each height of the electric / electronic device storage box. [Figure 22] This figure shows an example of the flow from when a user who wants to place an order while using the earthquake resistance performance evaluation system for electrical and electronic equipment storage boxes uses a terminal to input information about the electrical and electronic equipment storage box and other items and then places the order. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The embodiment of the invention is described below. As can be understood from Fig. 1 to Fig. 4, the seismic performance evaluation system for an electrical / electronic device storage box of this embodiment includes a housing information input means for inputting information on the size, model, side panels, and door of the housing of the electrical / electronic device storage box that mounts the electrical device or electronic device, an internal device input means for inputting the selection of the internal device to be mounted in the housing and the layout information of the internal device, a constant value database 21 for identifying the constant value used to calculate the natural frequency, and a calculation means 11 for extracting the constant value from the constant value database 21 and calculating the natural frequency of the electrical / electronic device storage box by calculation using the constant value, the information on the housing, and the information on the internal device. This makes it possible to evaluate the seismic performance of the electrical / electronic device storage box taking into account the natural frequency.

[0015] Here, an overview of the earthquake-resistant performance evaluation system for electrical and electronic equipment storage boxes according to the embodiment will be described. The earthquake-resistant performance evaluation system according to the embodiment can identify electrical and electronic equipment storage boxes and the electrical and electronic equipment stored therein. After identifying these, the earthquake-resistant performance can be evaluated. Furthermore, the system can be used to make it possible to carry out procedures for purchasing an electrical and electronic equipment storage box with specifications determined by the system. To make this possible, the system is configured so that each terminal 50 can connect to a server 10 that can function as the earthquake-resistant performance evaluation system for electrical and electronic equipment storage boxes via a communication line such as the Internet (see FIG. 1).

[0016] 1, a terminal 50 operated by a user (customer or operator) is provided with an input means 52 used by the user to input information, and a display means 51 capable of displaying information sent from a server 10 (prepared by a manufacturer, etc.). Typical examples of the input means 52 are a keyboard and a mouse, but other devices may also be used. Also, a typical example of the display means 51 is a display capable of displaying images, but other devices may also be used.

[0017] The server 10 of the embodiment includes a storage means 12 capable of storing information. The storage means 12 may be of any type, and may be, for example, a CPU or a hard disk. The server 10 of the embodiment also includes a calculation means 11, a product determination means 13, a calculation master 14, an output means 15, and the like.

[0018] In the embodiment, a product database is installed in the server 10. The product database in the embodiment includes a housing database 16 in which information about electronic and electric device storage boxes is stored, and a housing-mounted parts database 17. The housing-mounted parts database 17 in the embodiment also includes an internal device database 171, an option parts database 172, and a peripheral parts database 173.

[0019] The housing database 16 is a collection of device information of the housings of boxes for storing electric and electronic equipment. For example, the housing database 16 of the embodiment includes information such as the product name (housing model number), size, mass, material, allowable load, and drawing data (see FIG. 2). The housing database 16 of the embodiment also includes information such as the size, mass, material, and drawing data of the side panels, doors, ceiling panels, and other components of the housing (see FIG. 3). In addition, the housing database 16 of the embodiment also includes information on the side panels and doors that correspond to the rearrangement specifications of each housing. Of course, the information included in the housing database 16 does not need to be limited to this.

[0020] In the embodiment, a housing mounted parts database 17 is provided, which is a database of parts that can be mounted on the housing of the electric / electronic device storage box. The housing mounted parts database 17 in the embodiment includes an internal equipment database 171, an option parts database 172, and a peripheral parts database 173, and the internal equipment database 171 is a database that stores internal equipment such as the server 10, power supply unit, HUB equipment, optical connection box, patch panel, etc. that are installed inside (see FIG. 4). Various types of information can be included in the housing mounted parts database 17, and for example, data such as product name, mass, wiring space, rated current and voltage, and drawing data information may be included.

[0021] Also, optional parts database 172 is provided with data on ventilation fans, louvers, heaters, equipment mounting brackets, etc., which are attached to the sides or inner surfaces of the housing (see FIG. 5). Various types of data can be considered to be provided in optional parts database 172, but for example, in the case of equipment information on a ventilation fan, data such as product name, material, maximum air volume, rated power consumption, and mass may be provided.

[0022] Moreover, the peripheral parts database 173 may be provided with information that is not provided in the internal device database 171 or the optional parts database 172 (see FIG. 6). For example, the peripheral parts database 173 may be provided with information such as the size, material, and strength of members for attaching the housing to the installation location and connecting fittings.

[0023] Here, an example of a method for selecting an electrical / electronic device storage box from the contents displayed on the screen of the terminal 50 will be described. FIG. 7 shows an example of the contents displayed on the display means 51 of the user's terminal 50 when selecting a case. The user can operate the terminal 50 while looking at the display means 51 displayed in this way. In this example, the "type" registered in the database can be selected and displayed using a pull-down function. It is also possible to select a matching product name by inputting the relevant item. In this example, the system is also configured to be able to display a list of selected options, recombination specifications, and internal device selection contents, which will be described later.

[0024] When the user selects a storage box for electrical and electronic equipment while viewing the display as shown in FIG. 7 and then selects the tab labeled "Options / Reconfiguration," the display content changes, and the user can specify the options to be installed inside or the reconfiguration of a part of the housing. FIG. 8 shows an example of the content displayed on the display means 51 of the user's terminal 50 when selecting the specifications for options and reconfiguration. The user can operate the terminal 50 while viewing the display means 51 displayed in this way. In this example, the user can use the pull-down function to select and display the "type" registered in the database. In addition, the user can select the matching product name by inputting the relevant item. If there is a change in mass, it is preferable to display it in the list of selection contents.

[0025] In the embodiment, when the tab displayed as "Mounted Equipment" is selected, the display content is changed, and information about the internal equipment to be mounted in the housing (such as a rack) can be input (see FIG. 9). Various types of input are possible, but for example, the size, the wiring space required in front of and behind the housing, the protruding shape of the housing, and the like may be input as equipment information. The equipment information may be directly input by the user, or may be read and specified from information about the internal equipment stored in a database. When the information is specified, it is preferable to determine whether the internal equipment can be placed inside the selected housing. If the result of the determination is that the internal equipment cannot be placed, it may be possible to automatically verify whether the internal equipment can be placed by shifting the mounting angles or the mounting angle positions, and to display the result. Of course, the user may operate the mounting angles or the mounting angle positions to verify whether the equipment can be placed each time. In the embodiment, the screen is configured to display a shape corresponding to the internal equipment, and the position of the internal equipment can be designed.

[0026] By specifying the horizontal and vertical positions of the internal equipment in the case, the position of the internal equipment in the case can be specified. In this example, a diagram of the front of the rack or the like is displayed so that the front-to-back positions and heights of the internal equipment can be determined, and the position of each piece of equipment can be determined using the diagram or a table.

[0027] In this embodiment, the effective mounting space for the internal devices (specified by the positions of the device mounting holes of the mounting angle, etc.) is determined for each housing (see FIG. 10), and the layout of the internal devices can be selected within that range.

[0028] In the embodiment, when the installation position of the internal equipment, etc. is input, an evaluation can be performed regarding "the displacement of the housing with the internal equipment under specific vibration conditions." In the example shown in FIG. 11, past earthquake waveforms can be selected as the vibration conditions. For each earthquake waveform, a vibration frequency range (frequency), vibration amplitude (acceleration), and vibration time are set, and the displacement of the housing can be evaluated using this information. In order to make this possible, the calculation means 11 of the embodiment is configured to be able to calculate the displacement amount of the housing using the input natural frequency of the housing. In addition, a plurality of vibration conditions are stored in the vibration condition database 22.

[0029] In the embodiment, the height of the center of gravity of the box for storing electrical and electronic equipment is calculated based on the input internal equipment, arrangement, etc., and the natural frequency of the box for storing electrical and electronic equipment is calculated, and the amount of displacement when a vibration condition is applied to a housing having the natural frequency can be calculated. For example, the amount of displacement may be a partial amount, such as the amount of displacement of the top of the housing. In this case, however, it is preferable to select a location where the amount of displacement may be relatively large.

[0030] The amount of displacement is calculated and the possibility of damage to the internal equipment is evaluated based on the amount of displacement. It is preferable that the calculation results and judgment results of the amount of displacement are displayed on the screen so that the user can understand them through the terminal 50 (see FIG. 12). It is also possible to output these in the form of a calculation sheet. In addition, the layout conditions of the internal equipment may be saved as information so that it can be used to calculate information for other housings.

[0031] In order to make these possible, the earthquake resistance performance evaluation system for electric / electronic device storage boxes is preferably configured to include a vibration condition input means 52 that allows earthquake waveform information to be input, and the calculation means 11 is configured to be able to calculate the amount of displacement of the housing using the input natural frequency of the housing. Note that even if no input is made using the vibration condition input means 52, the result of the amount of displacement of the housing may be calculated using information on one or more earthquake waveforms in the vibration condition database 22 and the natural frequency of the housing.

[0032] Here, an example of the calculation will be described in more detail. Information about the internal device specified by the user (such as size, arrangement, mass, etc.) and information about the casing (such as size, mass, specification change information, etc.) are identified. This information is preferably stored in the storage means 12. Using this information, the calculation means 11 calculates the position of the center of gravity of the box for storing electric / electronic equipment with the internal device attached to the casing. The calculation result is preferably stored in the storage means 12. The position of the center of gravity stored in the storage means 12 is preferably displayed on a screen (see Figs. 13 and 14).

[0033] The center of gravity of the electrical / electronic equipment storage box with the internal equipment attached to the case, determined in this way, is related to the characteristics of the shaking of the case caused by an earthquake that may occur after installation, but the degree of shaking cannot be determined from the center of gravity alone. For this reason, data that correlates the relationship between a specific center of gravity and the degree of shaking is used. Specifically, the natural frequency is determined, but the natural frequency is generally unique to an object and is considered to be proportional to the positive square root of the value obtained by dividing a constant that represents the stretchability of the material by the mass, as shown in Figure 15.

[0034] Normally, the spring constant k, which is the force divided by the deformation and indicates the material's elongation, is set as the constant used to determine the natural frequency, and the calculation to derive the natural frequency is performed based on this. However, even if this is used to determine the displacement of an electrical and electronic equipment storage box, the constant actually varies depending on the specifications of the case type (material, frame shape, density, fixed position) input by the user, the case size (length, width, depth, mass), and the internal equipment (center of gravity position, mass of internal equipment) installed. In other words, even if one constant in the above formula is set, appropriate results will not be obtained for many types of electrical and electronic equipment storage boxes.

[0035] Therefore, the relationship between the conditions of the electrical and electronic equipment storage box and the constants is associated in advance, so that the constants can be selected according to the conditions of the housing. For this purpose, a constant value database 21 having a plurality of constants is prepared. This constant value database 21 is used to link the specifications of the electrical and electronic equipment storage box with the constants. As can be seen from FIG. 16, in the embodiment, the constant value can be specified using the constant value database 21, the housing information, and the information on the center of gravity, and the natural frequency is derived using information on the mass, etc. In addition, the natural frequency and the excitation conditions are used to perform an operation to calculate the amount of displacement, and the result is used to make a judgment.

[0036] In this embodiment, as will be described later, the constant values, natural frequency, and displacement are calculated by computation.

[0037] In the embodiment, an arithmetic expression for calculating the natural frequency from the constant values ​​derived from the various conditions described above is stored in advance in the database. In this example, the constant values ​​are set so as to integrate the relationships between the model and the natural frequency of the housing, the center of gravity position and the natural frequency, and the mass and the natural frequency. The relationship between the constant values ​​and the natural frequency may be associated using the results of actual measurements or values ​​derived from technical calculations or simulations on a computer for physical phenomena. By using the data obtained in this way, for example, an approximation curve or an approximation surface is created from the relationship between the constant values ​​and the natural frequency, and the natural frequency can be calculated by applying the constant values ​​to the approximation curve or the approximation surface (see FIG. 17). As can be seen from this example, it is preferable that the calculation means 11 is configured to be able to specify the natural frequency using a relational expression using information on the constant values ​​and the natural frequency organized for each model.

[0038] Incidentally, such an approximation curve or other arithmetic formula may be provided in a database, or each constant value for calculating the natural frequency may be set, and the natural frequency may be found from the input model, height position, and mass of the housing. Also, the relationship between the model and the natural frequency of the housing, the relationship between the height position and the natural frequency, and the relationship between the mass and the natural frequency may be calculated using the approximation curve formula, and constant values ​​for calculating the natural frequency from each formula may be calculated.

[0039] As mentioned above, the natural frequency depends on the model of the housing, the position of the center of gravity, the mass, etc. For this reason, it is preferable to organize the relationship with the constant value for each model (see Figure 18). If the relational equation relating the constant value and the natural frequency is set to be different for each model of housing, it is sufficient to extract the related value and relational equation depending on the model of the housing entered.

[0040] In any case, by deriving the natural frequency, it is possible to grasp the magnitude of the natural frequency. For example, if the natural frequency is large, it is possible to determine whether a structure is more susceptible to short-period earthquake motion. On the other hand, if the natural frequency is small, it is possible to determine whether a structure is more susceptible to damage from long-period earthquake motion (which is difficult to attenuate and can reach long distances, and is common in large earthquakes).

[0041] In the embodiment, an earthquake waveform showing the relationship between time and acceleration as shown below is stored as the excitation condition (see FIG. 19). When performing actual measurement or analysis using CAE, an excitation condition simulating such an earthquake waveform may be applied to an electrical / electronic device storage box, and the amount of displacement may be measured or calculated. For example, the maximum or average displacement may be measured or the maximum or average displacement may be derived using CAE when a vibration equivalent to a specific earthquake waveform is applied to an electrical / electronic device storage box having a specific natural frequency.

[0042] Incidentally, if a large number of relationships between the natural frequency and the amount of displacement set from actual measurements and analysis results are stored in the storage means 12, it becomes possible to derive a relational equation, such as an approximation curve that expresses the relationship between the natural frequency and the amount of displacement, using the information stored in the storage means 12 (see FIG. 20). By using a relational equation derived based on a large amount of information already obtained in this way, it is possible to effectively utilize existing information. For example, by using the relational equation, the amount of displacement can be calculated by inputting the natural frequency and earthquake waveform conditions. The earthquake waveform conditions are required because the relationship between the natural frequency and the amount of displacement differs for each earthquake waveform. In any case, by using the relational equation, the amount of displacement of the storage box for electrical and electronic equipment can be calculated relatively easily.

[0043] To make this possible, it is preferable that the seismic performance evaluation system for electrical and electronic equipment storage boxes be configured to be able to identify the amount of displacement using a relational equation that uses information on the natural frequency and displacement amount organized for each earthquake waveform information.

[0044] Also, the user may check this amount of displacement and determine the extent of the effect on the internal equipment. For example, a criterion for judging the amount of displacement may be stored according to the height of the housing, etc., and if the amount of displacement is within the criterion, it may be determined that there is no problem (see FIG. 21). If the amount of displacement is outside the criterion, it may be determined that there is a high possibility of damage. These determinations may be made by the calculation means 11. For example, judgment conditions may be set that allow the judgment that "the internal equipment cannot be kept horizontal" or "there is a risk of the internal equipment falling off due to a shift in the distance between the mounting angles."

[0045] To make this possible, it is preferable that the calculation means 11 of the system for evaluating the earthquake resistance performance of electric / electronic equipment storage boxes is configured to be capable of determining whether or not the amount of displacement exceeds a predetermined numerical value.

[0046] The above system can be used to improve convenience when a user purchases an electrical and electronic equipment storage box, etc. For example, it becomes possible to use the terminal 50 in a manner as shown in Fig. 22, and to decide on an electrical and electronic equipment storage box to purchase while checking whether the box is designed to withstand anticipated earthquakes.

[0047] In the example shown in FIG. 22, after the normally expected input tasks of inputting information about the electrical and electronic equipment storage box (ST1) and inputting information about the installed equipment (information about the internal equipment) (ST2), calculations are performed to calculate the position of the center of gravity of the electrical and electronic equipment storage box with the internal equipment installed (ST3) and the natural frequency of this electrical and electronic equipment storage box (ST4).

[0048] After that, when the user inputs the excitation conditions (ST5), a calculation is performed to calculate the amount of displacement from earthquake waveform data specified from the natural frequency and the input excitation conditions (ST6). A calculation is also performed to determine whether the amount of displacement is within a reference value (ST7). After receiving the results, the user performs an ordering procedure, and the order for the specified storage box for electrical and electronic equipment is decided (ST8).

[0049] Although the present invention has been described above by taking the embodiment as an example, the present invention is not limited to the above embodiment and can be implemented in various forms. For example, it is possible to rearrange the order of each step within a range that does not cause problems, to include other steps, or to omit some steps. Specifically, for example, between ST7 and ST8, a step of displaying information on a terminal or a step of physically outputting information can be added. [Explanation of symbols]

[0050] 11 Calculation means 21 Constant Value Database

Claims

1. a housing information input means for inputting information on the size, model, side panels, and doors of a housing of an electrical / electronic device storage box in which an electrical device or electronic device is mounted; an internal device input means for allowing selection of internal devices to be mounted in the housing and inputting layout information of the internal devices; A constant value database that can identify constant values ​​used to calculate the natural frequency; A calculation means for extracting a constant value from a constant value database and calculating a natural frequency of the box for storing electric and electronic equipment by calculation using the constant value, information on the housing, and information on the internal equipment; The earthquake resistance performance evaluation system for an electrical and electronic equipment storage box is provided.

2. 2. The system for evaluating the earthquake resistance performance of storage boxes for electrical and electronic equipment according to claim 1, wherein the calculation means is capable of identifying the natural frequency using a relational equation that uses constant values ​​organized for each model and information on the natural frequency.

3. A vibration condition input means is provided for inputting information on earthquake waveforms, 3. The system for evaluating the earthquake resistance performance of a storage box for electric / electronic equipment according to claim 1, wherein the calculation means is capable of calculating the amount of displacement of the housing by using the inputted natural frequency of the housing.

4. The earthquake resistance performance evaluation system for storage boxes for electrical and electronic equipment according to claim 3, which is capable of identifying the amount of displacement using a relational equation that uses information on the natural frequency and the amount of displacement organized for each earthquake waveform information.

5. 5. The system for evaluating the earthquake resistance performance of an electric / electronic device storage box according to claim 4, wherein the calculation means is capable of determining whether or not the amount of displacement exceeds a predetermined value.

6. The information on earthquake waveforms is stored in the excitation condition database.

3. The system for evaluating the earthquake resistance performance of a storage box for electric / electronic equipment according to claim 1, wherein the calculation means is capable of calculating the amount of displacement of the housing using earthquake waveform information in the vibration condition database and the natural frequency of the housing.

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