CN107884149A - Shake test structure in one kind top destroys recognition methods - Google Patents
Shake test structure in one kind top destroys recognition methods Download PDFInfo
- Publication number
- CN107884149A CN107884149A CN201610871982.0A CN201610871982A CN107884149A CN 107884149 A CN107884149 A CN 107884149A CN 201610871982 A CN201610871982 A CN 201610871982A CN 107884149 A CN107884149 A CN 107884149A
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- shake
- tolerance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
Abstract
The present invention provides a kind of top shake test structure and destroys recognition methods, including：Acceleration transducer is installed on the testpieces of top shake experiment, the measurement direction of the acceleration transducer is identical with top shake direction；The acceleration signal of the acceleration transducer collection is obtained, and shock response spectrum calculating is carried out to the acceleration signal；The tolerance between shock response spectrum and the standardized impact response spectra is calculated, the time whether testpieces destroy and destroy is judged according to the tolerance；Traditional Man detection method sum is solved it is judged that lack of standardization, it is difficult to the problem of judging time to rupture.
Description
Technical field
The present invention relates to environmental test technical field, more particularly to a kind of top shake test structure to destroy recognition methods.
Background technology
The detection that top shake test structure destroys is a comparatively laborious and complicated technology in the shake experiment of top, and testpieces is
No destruction is the whether normal important parameter of balancing tests part, has weight in terms of product runs the assessment for shaking environmental suitability
Want reference value.
At present, the method that whether structure is destroyed after the experiment of determination testpieces in engineering, is manually examined before the test first
Survey, it is ensured that experiment before be intact, then carry out hand inspection after experiment, be confirmed whether it is intact, this method exist
Shortcoming, as test structure integrity checks manually method completely, efficiency comparison is low, while can not differentiate that structure is destroyed in testing
Time, whether can only judge that this conventional method is difficult to be accurately positioned time to rupture extremely by acceleration peak value.
The content of the invention
The brief overview on the present invention is given below, to provide the basic reason on certain aspects of the invention
Solution.It should be appreciated that this general introduction is not the exhaustive general introduction on the present invention.It is not intended to determine the key of the present invention
Or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides some concepts in simplified form, with
This is as the preamble in greater detail discussed later.
To solve the above problems, the present invention proposes that a kind of top shake test structure destroys recognition methods.
Shake test structure in one kind top destroys recognition methods, including：
Acceleration transducer is installed on the testpieces of top shake experiment, measurement direction and the top of the acceleration transducer shake
Direction is identical；
The acceleration signal of the acceleration transducer collection is obtained, and shock response spectrum is carried out to the acceleration signal
Calculate；
The tolerance between shock response spectrum and the standardized impact response spectra is calculated, the experiment is judged according to the tolerance
The time whether part destroys and destroy.
It is provided by the invention top shake test structure destroy recognition methods, solve Traditional Man detection method sum it is judged that
It is lack of standardization, it is difficult to the problem of judging time to rupture.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 destroys a kind of flow chart of embodiment of recognition methods for a kind of top shake test structure provided by the invention.
Fig. 2 is the flow chart that a kind of shake test structure of running provided by the invention destroys second of embodiment of recognition methods.
Embodiment
Illustrate embodiments of the invention with reference to the accompanying drawings.Retouched in the accompanying drawing of the present invention or a kind of embodiment
The element and feature that the element and feature stated can be shown in one or more other accompanying drawings or embodiment are combined.
It should be noted that in order to understand purpose, eliminated in accompanying drawing and explanation known to unrelated to the invention, those of ordinary skill in the art
Part and processing expression and description.
With reference to figure 1, the present embodiment provides a kind of top shake test structure and destroys recognition methods, including：
Step S101, acceleration transducer, the measurement of the acceleration transducer are installed on the testpieces of top shake experiment
Direction is identical with top shake direction；
Step S102, obtains the acceleration signal of the acceleration transducer collection, and the acceleration signal is carried out
Shock response spectrum calculates；
Step S103, the tolerance between shock response spectrum and the standardized impact response spectra is calculated, is sentenced according to the tolerance
Break the time whether testpieces destroys and destroy.
Specifically, before top shakes on-test, acceleration transducer, the choosing of acceleration transducer are arranged on testpieces
Select with requirement referring to《Impact and vibration handbook》, the operating frequency range covering 10Hz-2000Hz of acceleration transducer, survey
Measuring direction and top, to shake direction identical, and the installation site of acceleration transducer is preferably the fragile position of testpieces, acceleration sensing
The connected mode of device and testpieces is using gluing.
Using general data actuation, the acceleration signal for testing whole process is acquired, sample frequency is not less than
10KHz, the selection of data actuation and requirement referring to《Impact and vibration handbook》.
Top shake number is generally 1000 times in the shake experiment of top, and the acceleration signal by shake of running first is separated, and is formed
Independent acceleration signal, the tandem of each acceleration signal keep constant, each acceleration signal are rushed respectively
Response spectra calculating is hit, the computational methods of shock response spectrum are shown in《Impact and vibration handbook》.
Standardized impact response spectra SRS0(f) shock response spectrum when testpieces is intact is referred to, typically can be in test adjustment
Obtain, as a preferred embodiment, standardized impact response spectra is top shakes the shock response spectrum obtained for the first time in experiment.
Further, the tolerance is calculated by below equation：
Wherein, f is sample frequency, SRS0On the basis of shock response spectrum, SRSiFor the shock response spectrum of ith top shake, δiFor
The tolerance of ith top shake.
Further, with reference to figure 2, judge whether the testpieces destroys according to the tolerance, including：
By the tolerance compared with predetermined threshold value, if the tolerance is more than or equal to predetermined threshold value, it is determined that described
Testpieces has destroyed, if conversely, being less than predetermined threshold value, then it represents that testpieces is normal.
As a preferred embodiment, predetermined threshold value is 6dB.
Further, top shake number when being destroyed according to testpieces, determines the time that the testpieces destroys, when tolerance is big
When predetermined threshold value, top shake number now is recorded, i.e., is destroyed since ith runs shake, so that it is determined that when destroying
Time.
Shake test structure in top provided by the invention destroys recognition methods, solves artificial detection and difficulty in the shake experiment of tradition top
The problem of to determine time to rupture, by engineering practice detection, have the advantages that principle is simple, explicit physical meaning.
Although the present invention and its advantage is described in detail it should be appreciated that without departing from by appended claim
Various changes, replacement and conversion can be carried out in the case of the spirit and scope of the present invention limited.Moreover, the model of the application
Enclose the process described by specification of being not limited only to, equipment, means, the specific embodiment of method and steps.In the art is common
Technical staff will readily appreciate that from the disclosure, can be used and performed and corresponding reality described herein according to the present invention
Apply the essentially identical function of example or obtain process essentially identical with it result, existing and that future is to be developed, equipment,
Means, method or step.Therefore, appended claim is intended to include such process, equipment, hand in the range of them
Section, method or step.
Claims (5)
1. shake test structure in one kind top destroys recognition methods, it is characterised in that including：
Acceleration transducer, measurement direction and the top shake direction of the acceleration transducer are set on the testpieces of top shake experiment
It is identical；
The acceleration signal of the acceleration transducer collection is obtained, and shock response spectrum meter is carried out to the acceleration signal
Calculate；
The tolerance between shock response spectrum and the standardized impact response spectra is calculated, judges that the testpieces is according to the tolerance
The time of no destruction and destruction.
2. shake test structure in top according to claim 1 destroys recognition methods, it is characterised in that the standardized impact response
Compose and rung for the shock response spectrum that top shake for the first time obtains in experiment or the impact that equal state testpieces obtains in the shake experiment of top
Ying Pu.
3. shake test structure in top according to claim 1 destroys recognition methods, it is characterised in that the tolerance passes through following
Formula is calculated：
<mrow>
<msub>
<mi>&delta;</mi>
<mi>i</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>f</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mn>20</mn>
<msub>
<mi>log</mi>
<mn>10</mn>
</msub>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<msub>
<mi>SRS</mi>
<mi>i</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>f</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>SRS</mi>
<mn>0</mn>
</msub>
<mrow>
<mo>(</mo>
<mi>f</mi>
<mo>)</mo>
</mrow>
</mrow>
</mfrac>
<mo>)</mo>
</mrow>
<mo>,</mo>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
<mo>,</mo>
<mn>2</mn>
<mo>,</mo>
<mo>...</mo>
<mo>,</mo>
<mi>N</mi>
</mrow>
Wherein, f is sample frequency, SRS0On the basis of shock response spectrum, SRSiFor the shock response spectrum of ith top shake, δiFor i-th
The tolerance of secondary top shake.
4. shake test structure in top according to claim 3 destroys recognition methods, it is characterised in that is judged according to the tolerance
Whether the testpieces destroys, including：
By the tolerance compared with predetermined threshold value, if the tolerance is more than or equal to predetermined threshold value, it is determined that the experiment
Part has destroyed.
5. shake test structure in top according to claim 4 destroys recognition methods, it is characterised in that when being destroyed according to testpieces
Top shake number, determine the time that the testpieces destroys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871982.0A CN107884149A (en) | 2016-09-30 | 2016-09-30 | Shake test structure in one kind top destroys recognition methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871982.0A CN107884149A (en) | 2016-09-30 | 2016-09-30 | Shake test structure in one kind top destroys recognition methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107884149A true CN107884149A (en) | 2018-04-06 |
Family
ID=61770029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610871982.0A Pending CN107884149A (en) | 2016-09-30 | 2016-09-30 | Shake test structure in one kind top destroys recognition methods |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954413A (en) * | 2019-12-12 | 2020-04-03 | 苏州苏试试验集团股份有限公司 | Control device and control method of impact response spectrum test bed |
Citations (4)
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|---|---|---|---|---|
| CN102466554A (en) * | 2010-11-17 | 2012-05-23 | 西北机器有限公司 | Shock response spectrum test machine |
| US20120271603A1 (en) * | 2011-04-21 | 2012-10-25 | The Boeing Company | System and method for simulating high-intensity pyrotechnic shock |
| CN202793733U (en) * | 2012-09-28 | 2013-03-13 | 贵州航天计量测试技术研究所 | Calibrating device for shock response spectrum testing machine based on PXI |
| CN103389197A (en) * | 2013-07-29 | 2013-11-13 | 苏州世力源科技有限公司 | Drive device of horizontal impacting test bed and bi-directional multifunctional horizontal impacting test bed |
-
2016
- 2016-09-30 CN CN201610871982.0A patent/CN107884149A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466554A (en) * | 2010-11-17 | 2012-05-23 | 西北机器有限公司 | Shock response spectrum test machine |
| US20120271603A1 (en) * | 2011-04-21 | 2012-10-25 | The Boeing Company | System and method for simulating high-intensity pyrotechnic shock |
| CN202793733U (en) * | 2012-09-28 | 2013-03-13 | 贵州航天计量测试技术研究所 | Calibrating device for shock response spectrum testing machine based on PXI |
| CN103389197A (en) * | 2013-07-29 | 2013-11-13 | 苏州世力源科技有限公司 | Drive device of horizontal impacting test bed and bi-directional multifunctional horizontal impacting test bed |
Non-Patent Citations (2)
| Title |
|---|
| 《振动与冲击手册》编辑委员会: "《振动与冲击手册》", 30 November 1990, 国防工业出版社 * |
| 郑秋双: "基于LabVIEW的无人机落震台数据采集系统的研制与实现", 《中国学位论文全文数据库》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954413A (en) * | 2019-12-12 | 2020-04-03 | 苏州苏试试验集团股份有限公司 | Control device and control method of impact response spectrum test bed |
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Application publication date: 20180406 |
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