JP2000121488A - Apparatus and method for testing vibration - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration testing apparatus which tests combining a shaking experiment and a simulation through calculation of a numeric value model in real time and can conduct experiments stably even when shaking a sample on a vibrating table and a shaker fixed on the table. SOLUTION: The vibration testing apparatus has a shaking device 5 for shaking a sample 6, a shaking control device 20 which separates an object to be evaluated to the sample 6, and a numeric value model part. The apparatus calculates response to vibration of the numeric value model part with use of an inertial force by an input acceleration and a reaction force from the sample 6 as an external force, and controls the shaking device 5 based on the vibration response to shake the sample 6, a vibrating table 4 for shaking the sample 6 and a vibrating table control device 14 for controlling the vibrating table 4 based on a vibration acceleration command value input thereto to shake the sample 6. The vibration acceleration command value is used as the input acceleration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration test apparatus for performing a vibration test by combining a vibration test using a shaking table and a simulation based on a numerical model calculation in real time.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. Hei 5-10846 discloses a prior art relating to a vibration test apparatus that combines a vibration experiment and a simulation based on a numerical model calculation in real time. In this type of vibration test equipment, a part of the object to be evaluated is subjected to a vibration experiment using a specimen, the remaining part is converted into a numerical model, and its vibration response is calculated by numerical calculation simulation. A vibration test is performed by combining calculation simulation with real time. In the numerical simulation, the displacement to be applied to the specimen is calculated by solving the equation of motion of the numerical model using the reaction force from the specimen and the seismic acceleration obtained from the vibration test of the specimen as external forces. Here, when the specimen is excited by a shaking table and a shaker fixed on the shaking table, as disclosed in JP-A-7-55630, an acceleration provided on the shaking table is used as an earthquake acceleration. The acceleration measured by the meter was used.

[0003]

In the above prior art, the shaker fixed on the shaking table depends on the condition of the shake table such as stroke, the condition of the shaker fixed on the shake table, and the vibration condition. The acceleration generated by the shaking table (the acceleration on the shaking table) due to the vibration of the specimen
In some cases, a disturbance component other than the seismic acceleration (target acceleration) that should occur is included. In the prior art, the acceleration y "on the shaking table is measured by an accelerometer, the vibration response of a numerical model is calculated using the acceleration y" as the seismic acceleration, and the displacement xr to be given to the specimen is calculated. The vibration of the specimen is repeated with the vibrator fixed on the shaking table based on.
Due to the excitation by the exciter, the acceleration y "on the shaking table further includes a disturbance component, and the shaking table itself is excited by the repetitive loop, and the experiment may become difficult.

An object of the present invention is to provide a vibration test apparatus and a vibration test method capable of executing a simulation by numerical model calculation accurately and performing a stable experiment.

[0005]

To achieve the above object, a vibration test apparatus according to the present invention comprises: a vibration table for vibrating a specimen which is a part of an object to be evaluated; An arithmetic processing device that calculates a vibration response of the numerical model to an external force using a numerical model that describes the vibration model; a vibration device that vibrates the specimen based on a calculation result of the arithmetic processing device; and In the vibration test device including a control device for controlling the vibration, the arithmetic processing device calculates a vibration response of the numerical model by inputting acceleration information for controlling the vibration table. At this time, the calculation of the vibration response of the numerical model in the arithmetic processing unit may be started after a predetermined time has elapsed from the start of the vibration of the shaking table. Further, in order to achieve the above object, the vibration test apparatus of the present invention is a vibration apparatus that vibrates the specimen, and the object to be evaluated is divided into the specimen and the numerical model, and the inertial force due to the input acceleration and A vibration control device that calculates the vibration response of the numerical model portion with the reaction force from the test body portion as an external force, and controls the vibration device based on the calculation result of the vibration response to vibrate the test body portion; A vibration table that vibrates the specimen, and a vibration test apparatus that includes a vibration table controller that receives the vibration acceleration command value, controls the vibration table based on the vibration table command, and vibrates the specimen. The vibration acceleration command value is used as the input acceleration. At this time, the shaking table controller starts inputting the vibration acceleration command value,
After a set time Δt, a trigger signal is activated and output, and the vibration control device sets the acceleration obtained by delaying the phase of the vibration acceleration command value by Δt as the input acceleration, and when the trigger signal is activated. The vibration response calculation may be started. Further, the vibration control device outputs a trigger signal actively, and after a set time Δt after actively outputting the trigger signal, an acceleration obtained by delaying the phase of the vibration acceleration command value by Δt as the input acceleration. The vibration response calculation may be started, and the shaking table control device may input a vibration acceleration command value and start controlling the shaking table based on the vibration acceleration command value when the trigger signal is activated. . A trigger generator that outputs a first trigger signal and outputs a second trigger signal after a set time Δt from the output of the first trigger signal; A vibration acceleration command value output device that outputs an acceleration command value to the shaking table control device, and outputs a vibration acceleration command value to the vibration control device when a second trigger signal is input; Uses the vibration acceleration command value output from the vibration acceleration command value output device to the vibration control device as an input acceleration, and the shaking table control device transmits the vibration acceleration command value output device to the shaking table control device. The shaking table may be controlled based on the output vibration acceleration command value. Further, in order to achieve the above object, the vibration test apparatus of the present invention is a vibration apparatus that vibrates the specimen, and the object to be evaluated is divided into the specimen and the numerical model, and the inertial force due to the input acceleration and The vibration response of the numerical model part is calculated by using the reaction force from the specimen part as an external force, and based on this, a vibration control device for controlling the vibrating device to vibrate the specimen part; A vibration table, comprising: a vibration table for shaking; and a vibration table controller for inputting a first vibration acceleration command value and controlling the vibration table based on the vibration table to vibrate the specimen. A dynamic characteristic simulator for calculating and outputting a second vibration acceleration reflecting the dynamic characteristic based on a preset dynamic characteristic parameter in response to the input; The apparatus calculates the second vibration acceleration as the input acceleration. To, and performs the vibration response calculation. In order to achieve the above object, the vibration test method of the present invention uses a numerical model that vibrates a test piece, which is a part of the evaluation object, with a shaking table and describes another part of the evaluation object. In a vibration test method of calculating a vibration response of the numerical model to an external force, and vibrating the specimen with a vibration device different from the vibration table based on the calculation result, an acceleration for controlling the vibration of the vibration table The vibration response of the numerical model is calculated using information as input.

[0006]

FIG. 1 shows a first embodiment of the present invention.

The vibration test apparatus according to the present embodiment divides an object to be evaluated into a specimen as a real model and a numerical model, and combines a vibration experiment (excitation experiment) of the specimen with a simulation of the numerical model in real time. This is a device for performing a vibration test (excitation test), and roughly includes a controlled object 8, a shaking table control device 14, a hybrid excitation control device 20, a dynamic characteristic simulator 25, and a seismic wave acceleration signal generation device 31. It is comprised including. The above real model is a real model,
Full scale models, enlarged or scaled models, etc.
Includes those configured as actual structures.

[0008] The control object 8 is constituted by a device for vibrating the test piece 6 composed of a part of the object to be evaluated, and the shaking table 4 on which the test piece 6 is mounted, and the shaking table vibrating the shaking table 4. There are provided vibration exciters 1 to 3 and a specimen vibration exciter 5 mounted on the vibration table 4 to vibrate the specimen 6. In addition, a force sensor 7 is provided in the vibrator 5 for vibrating the specimen, and measures a reaction force (f) 9 from the specimen 6 due to the vibration of the specimen 6.

A seismic wave acceleration signal generator 31 fetches seismic wave acceleration data 36 into a memory 33 via a seismic wave acceleration data input unit 32, and based on the data in the memory 33, causes a signal generating unit 34 to generate a seismic wave acceleration command. A signal having a value y "r is generated, D / A converted by the D / A converter 35, and output to the signal line 38. Note that the seismic wave acceleration signal generating device 31 outputs a waveform, for example, as an analog signal. An analog signal may be directly output to the signal line 38 using a generator.

The shaking table controller 14 converts the seismic wave acceleration command value y ″ r input from the signal line 38 into an A / D
After conversion, the arithmetic processing unit 15 calculates control command values for the vibrating tables 1 to 3. The command value, which is the calculation result, is D / A converted by D / A converters 17 to 19, and the vibrating table vibrator 1
3 are output to the drivers. As a result, the vibrating table vibrators 1 to 3 vibrate the vibrating table 4.

The dynamic characteristic simulator 25 converts the seismic wave acceleration command value y "r input from the signal line 38 into a digital signal by the A / D converter 26, and then converts the dynamic characteristic of the shaking table with respect to y" r. The reflected seismic wave acceleration y "c is calculated by the dynamic characteristic calculation processing unit 27, D / A converted by the D / A converter 28, and output from the signal line 29. Here, the calculation method of y" c For example, there is the following method. That is, the dynamic characteristics (frequency characteristics) of the shaking table are approximated to those of a second-order lag system, and the parameters defining the second-order lag system are determined in advance by measuring the frequency characteristics of the shaking table. The model of the second-order delay system determined in this way is stored in the dynamic characteristic simulator 25, and based on this, y "c is calculated using y" r as an input. Of course, a model other than the second-order delay system may be used.

The hybrid excitation controller 20 receives the seismic wave acceleration y ″ c resulting from the reflection of the dynamic characteristics of the shaking table by the dynamic characteristics simulator 25, and the arithmetic processing unit 21 calculates the numerical values of the parts other than the specimen 6 with respect to the external force. The vibration response of the model is calculated in real time to calculate the displacement to be applied to the specimen 6. This displacement is output as a displacement command value xr10 of the vibrator 5, and the drive of the vibrator 5 is controlled. , As the external force,
The reaction force (f) 9 from the specimen 6 measured by the force sensor 7 generated by the vibration test of the specimen 6 and the seismic wave acceleration
The seismic wave used in this calculation is hereinafter referred to as an input seismic wave. The hybrid excitation control device 20 includes an A / D converter 22 is an A / D input section from the force sensor 7
The converter 23 also has a D / A converter 2 at the output to the vibrator 5.
4 are provided.

With the above-mentioned device (means), the shaking table 4 is excited by the seismic wave acceleration (input acceleration), and the vibration response calculation of the numerical model is performed by using the reaction force (f) 9 from the specimen 6 and the seismic wave acceleration as inputs. Is performed, the displacement to be applied to the specimen 6 is calculated, and the specimen 6 is vibrated. By repeating this process, only a part of the entire evaluation object (the specimen
By performing a vibration experiment using 6), it is possible to evaluate the vibration response of the entire evaluation object to the seismic wave acceleration.

In the present embodiment, the seismic wave acceleration used as an external force is a calculation result obtained by reflecting the dynamic characteristics of the shaking table to the seismic wave acceleration command value y ″ r without using the measured value of the acceleration on the shaking table. The acceleration y "c is used. Thereby, the repetition loop can be broken, and the shaking table
The effect of 4 is that the excitation can be prevented and the experiment can be performed stably.

Further, in this embodiment, the dynamic characteristics of the shaking table 4 are taken into consideration by using the dynamic characteristics simulator 25.
There is an effect that the accuracy of the vibration response calculation can be improved.

The improvement of the accuracy of the vibration response calculation by taking into account the dynamic characteristics of the shaking table 4 will be described with reference to FIG. In FIG. 5, y ″ r is the seismic wave acceleration signal generator 3
1 indicates the seismic wave acceleration command value generated, and y "c reflects the dynamic characteristics of the shaking table calculated by the dynamic characteristics simulator 25.
This is the seismic wave acceleration with respect to y "r. If y" r is used as the seismic force input of the hybrid vibration control device 20 without the dynamic characteristic simulator 25, the hybrid vibration control device 20 starts the seismic wave from time t0. Vibration response calculation is performed assuming that there is an external force. However, the realized acceleration of the shaking table 4 has a phase delay from y "r due to the dynamic characteristics of the shaking table 3 and matches the waveform of y" r shown in FIG. do not do. The same applies to the gain. Therefore, a difference corresponding to the dynamic characteristic of the shaking table 4 occurs between the seismic acceleration used for the vibration response calculation by the hybrid excitation control device 20 and the seismic acceleration realized by the shaking table 4, and the accuracy of the vibration response calculation is reduced. Getting worse.

On the other hand, in the case of the present embodiment, the seismic wave acceleration y "c resulting from the reflection of the dynamic characteristics of the shaking table with respect to y" r.
Is calculated by the dynamic characteristic simulator 25, and this y ″ c
Is used as the input acceleration for the vibration response calculation. Here, the difference between the seismic acceleration realized by the shaking table 4 and y "c can be made smaller than the difference between the seismic acceleration realized by the shaking table 4 and y" r. Accuracy can be improved.

Here, the dynamic characteristic simulator 25 calculates y ″ c
May be calculated, the dynamic characteristic of the shaking table 4 may be reflected in both the gain and the phase, or only one of them may be reflected. For example, when considering only the phase shift, y "c may be calculated by regarding the shift as dead time. At this time, there is an effect that the calculation load of the dynamic characteristic simulator 25 can be reduced.

The functions of the hybrid vibration control device 20 and the dynamic characteristic simulator 25 may be performed by one device. As an example, dynamic characteristic simulator 2
5 is abolished, and the signal line 38 is
And the function of the arithmetic processing unit 27 is added to the arithmetic processing unit 21 of the hybrid vibration control device 20. At this time, since the number of devices can be reduced, there is an advantageous effect in terms of device cost. Further, since the D / A converter 28 and the A / D converter 22 for connecting the dynamic characteristic simulator 25 and the hybrid excitation control device 20 are not required, the A / D conversion and the D / A conversion There is an effect that errors can be avoided.

In the above-described embodiment, the vibration direction of the specimen 6 by the vibrator 5 fixed on the vibrating table 4 is one direction, but the number of vibration directions is two or more. May be performed by a vibration device.

In the following embodiment, for simplicity of explanation, a case where the vibration direction of the specimen by the vibrator is one direction will be described. May be performed by a vibration device.

FIG. 2 shows a second embodiment of the present invention.

In the present embodiment, the function of the dynamic characteristic simulator 25 in the first embodiment is
It has moved to 0, and the others are the same. That is, the dynamic characteristic calculation processing unit 27 in the seismic wave acceleration vibration generation device 50
Performs the above operation on the seismic wave acceleration command value y "r generated by the signal generation unit 34, calculates y" c, converts the signal y "c into an analog signal by the D / A converter 28, Via the signal line 29.

At this time, in addition to the effects of the first embodiment, the number of devices can be reduced, so that there is an advantageous effect in terms of device cost. Further, D / D for connection between the seismic wave acceleration signal generation device 31 and the dynamic characteristic simulator 25 in the first embodiment.
Since A conversion and A / D conversion become unnecessary, A / D conversion and D
This has the effect of avoiding the / A conversion error.

FIG. 3 shows a third embodiment of the present invention.

In this embodiment, the function of the dynamic characteristic simulator 25 in the first embodiment is moved to the shaking table controller 62, and the other components are the same. That is, the dynamic characteristic calculation processing unit 27 in the shaking table controller 62 calculates y "c based on the seismic wave acceleration command value y" r input from the signal line 38,
After being converted into an analog signal by the D / A converter 28, the analog signal is output to the hybrid excitation control device 20 via the signal line 29.

At this time, in addition to the effects of the first embodiment, the number of devices can be reduced, so that there is an advantage in terms of device cost.

FIG. 4 shows a fourth embodiment of the present invention.

In the present embodiment, the function of the seismic wave acceleration / vibration generator 31 in the first embodiment is
4 and the inside of the shaking table control device 40, and a trigger signal generation device 47 is added. That is, the seismic wave acceleration data input units 42 and 46 take in the seismic wave acceleration data 36 and store them in the memories 41 and 45, respectively.
Place the data on top.

Arithmetic processing unit 15 in shaking table controller 40
Reads out seismic wave acceleration data from the memory 41 based on the trigger signal generated by the trigger signal generation device 47 and transmitted on the signal line 48, and sets it as a command value y "r. By controlling the vibrators 1-3, the vibration table 4
Start vibration of.

The arithmetic processing unit 2 in the dynamic characteristic simulator 44
7 reads out seismic wave acceleration data from the memory 45 based on the trigger signal generated by the trigger signal generation device 47 and transmitted on the signal line 49, and sets the readout value as a command value y "r to the vibration table with respect to y" r. Seismic acceleration y "reflecting the dynamic characteristics
c is calculated by the dynamic characteristic calculation processing unit 27, and D / A converter 28 calculates
After the A conversion, the signal is output from the signal line 29.

The trigger signal generator 47 transmits a trigger signal for synchronizing the shaking table controller 40 and the dynamic characteristic simulator 44 to the shaking table controller 40 and the dynamic characteristic simulator via signal lines 48 and 49, respectively. 44. As an example of this trigger signal generation, signal lines 48 and 4
9 has a method of outputting a trigger signal simultaneously.

The present embodiment has the following effects in addition to the effects of the first embodiment. That is, the seismic wave acceleration signal generation device 31 and the dynamic characteristic simulator 2 in the first embodiment
D / A conversion and A / D conversion for connection with 5 are unnecessary, and D / A conversion and A / D conversion for connection between the seismic wave acceleration signal generator 31 and the shaking table controller 14 are unnecessary. become. Therefore,
This has the effect of avoiding A / D conversion and D / A conversion errors.

Here, the function of the trigger signal generating device 47 may be provided to the arithmetic processing section 15 in the shaking table control device 40. At this time, since the number of devices can be reduced, there is an advantageous effect in terms of device cost.

The function of the trigger signal generator 47 is
The arithmetic processing unit 27 in the dynamic characteristic simulator 44 may be provided. At this time, since the number of devices can be reduced, there is an advantageous effect in terms of device cost.

Further, the other configuration shown in the first embodiment can be similarly configured in the present embodiment, and the effect is also the same.

Further, as shown in the third embodiment, the function of the dynamic characteristic simulator 44 may be provided in the shaking table controller 40. The effect at this time is the same as that of the third embodiment.

FIG. 6 shows a fifth embodiment of the present invention.

This embodiment is different from the fourth embodiment in that the functions of the seismic wave acceleration data input section 46 and the memory 45 are transferred to the hybrid vibration control device 20 and the hybrid vibration control device 80 is used as the dynamic vibration simulator. 44, the seismic wave acceleration data input unit 46 receives seismic wave acceleration data 82 (y "c) that reflects the dynamic characteristics of the shaking table with respect to the seismic wave acceleration data 36 (y" r).
The signal line 49 for transmitting the trigger signal from the trigger signal generation device is connected to the arithmetic processing unit 2 in the hybrid excitation control device 80.
1, and the other configurations are the same.

That is, the seismic wave acceleration data input unit 46
The seismic wave acceleration data 82 reflecting the dynamic characteristics is fetched and arranged on the memory 45.

The arithmetic processing unit 21 in the hybrid excitation control device 80 generates seismic wave acceleration data 82 reflecting dynamic characteristics from the memory 45 based on the trigger signal generated by the trigger signal generation device 47 and transmitted on the signal line 49. (Y "c) is read out, and the vibration response calculation is performed using this as an input seismic wave. Based on this, the displacement command value xr10 of the vibration exciter 5 is output, and the vibration exciter 5 is controlled.

Other operations are the same as in the fourth embodiment.

Here, the seismic wave acceleration data 36 (y "r)
As an example of a method for creating the seismic wave acceleration data 82 (y ″ c) reflecting the dynamic characteristics of the shaking table, a method similar to the method described in the first embodiment can be used.

In this embodiment, in addition to the effects of the fourth embodiment, seismic wave acceleration data 82 (y "c) reflecting the dynamic characteristics of the shaking table is calculated for the seismic wave acceleration data 36 (y" r). Since it is not necessary to perform the processing in real time during the vibration experiment, there is an effect that the calculation load during the experiment can be removed.

In each of the above-described embodiments, each device may be independent, or the function of a plurality of devices may be one.
It may be possessed by one device. For example, a plurality of arithmetic processing units can be realized by one arithmetic processing device by switching programs.

[0046]

According to the present invention, the input acceleration for calculating the vibration response of the numerical model is hardly mixed with disturbances caused by the operation of the vibrator for vibrating the specimen. Can be executed accurately, and a vibration experiment can be stably performed.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of the present invention.

FIG. 2 is a diagram showing one embodiment of the present invention.

FIG. 3 is a diagram showing one embodiment of the present invention.

FIG. 4 is a diagram showing an embodiment of the present invention.

FIG. 5 is a view for explaining a seismic wave acceleration command value reflecting dynamic characteristics of a shaking table.

FIG. 6 is a diagram showing an embodiment of the present invention.

[Explanation of symbols]

1-3: Shaking table vibrator, 4: Vibrating table, 5: Specimen vibrator, 6: Specimen, 7: Force sensor, 9: Reaction force from the specimen, 10: Displacement command value of shaker for sample shaker,
14: Shaking table control device, 20: Hybrid excitation control device, 27: Dynamic characteristic simulator, 36: Seismic wave acceleration data, 47: Trigger signal generation device, 82: Seismic wave acceleration data reflecting dynamic characteristics.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshihiko Horiuchi 502, Kachidate-cho, Tsuchiura-shi, Ibaraki Pref. Machinery Research Laboratory, Inc. Inside the Machinery Research Laboratory (72) Inventor Takao Konno 603, Kandamachi, Tsuchiura-city, Ibaraki Pref. Inside the Tsuchiura Plant, Hitachi, Ltd. (72) Inventor Wataru Yamagishi 603 Kandate-cho, Tsuchiura-shi, Ibaraki Pref.

Claims (8)

[Claims] 1. A calculation for calculating a vibration response of an external force by using a shaking table for exciting a specimen which is a part of an object to be evaluated and a numerical model describing another part of the object to be evaluated. A vibration test apparatus comprising: a processing device; a vibration device configured to vibrate the specimen based on a calculation result of the calculation processing device; and a control device configured to control vibration of the vibration table. A vibration test apparatus for calculating the vibration response of the numerical model by using acceleration information for controlling the vibration of the vibration table as an input. 2. The vibration test apparatus according to claim 1, wherein
A vibration test apparatus, wherein the calculation of the vibration response of the numerical model in the arithmetic processing unit is started after a predetermined time has elapsed from the start of the vibration of the shaking table. 3. A vibrating device for vibrating a specimen, and an object to be evaluated are divided into a specimen and a numerical model, and an inertial force due to an input acceleration and a reaction force from the specimen are numerically defined as external forces. Calculating a vibration response of the model portion, a vibration control device that controls the vibrating device based on the calculation result of the vibration response to vibrate the specimen portion, and a vibration table that vibrates the specimen portion, A vibration table control device for inputting a vibration acceleration command value, controlling the vibration table based on the vibration command command value, and vibrating the specimen part, wherein the vibration acceleration command value is used for the input acceleration. A vibration test apparatus characterized by the following. 4. The vibration test apparatus according to claim 3, wherein
The shaking table control device activates and outputs a trigger signal after a set time Δt from the start of inputting the vibration acceleration command value, and the vibration control device sets the acceleration obtained by delaying the phase of the vibration acceleration command value by Δt. Is the input acceleration, and the vibration response calculation is started when the trigger signal becomes active. 5. The vibration test apparatus according to claim 3, wherein
The vibration control device outputs a trigger signal active, and after a set time Δt from the active output of the trigger signal, sets the acceleration obtained by delaying the phase of the vibration acceleration command value by Δt as the input acceleration. Starting a response calculation, wherein the shaking table control device inputs a vibration acceleration command value and starts controlling the shaking table based on the vibration acceleration command value when the trigger signal is activated. Testing equipment. 6. The vibration test apparatus according to claim 3, wherein
A trigger generation device that outputs a first trigger signal and outputs a second trigger signal after a set time Δt from the output of the first trigger signal; A vibration acceleration command value output device that outputs a value to the vibration table control device, and outputs a vibration acceleration command value to the vibration control device when a second trigger signal is input, wherein the vibration control device includes: Using the vibration acceleration command value output from the vibration acceleration command value output device to the vibration control device as the input acceleration, the shaking table control device is output from the vibration acceleration command value output device to the shaking table control device. A vibration test apparatus for controlling a vibration table based on a vibration acceleration command value. 7. A vibrating device for vibrating a specimen part, and an object to be evaluated are divided into a specimen part and a numerical model part, and an inertial force due to an input acceleration and a reaction force from the specimen part are numerically defined as external forces. A vibration controller for calculating the vibration response of the model part and controlling the vibration device to vibrate the specimen part based on the vibration response; a vibration table for vibrating the specimen part; and a first vibration acceleration command. A vibration table control device for inputting a value, controlling the vibration table based on the input value, and vibrating the specimen portion, wherein the first vibration acceleration command value is input, and A vibration characteristic simulator which calculates and outputs a second vibration acceleration reflecting the dynamic characteristic based on a preset dynamic characteristic parameter, and wherein the vibration control device converts the second vibration acceleration to the input acceleration. Wherein the vibration response calculation is performed. Vibration testing equipment. 8. A specimen as a part of the object to be evaluated is vibrated by a shaking table, and a vibration response of the numerical model to an external force is calculated using a numerical model describing another part of the object to be evaluated. In a vibration test method in which the specimen is vibrated by a vibration device different from the vibration table based on the calculation result, a vibration response of the numerical model is calculated by inputting acceleration information for controlling the vibration of the vibration table. A vibration test method.