CN105506267B - A kind of oscillating aging system and method for multifrequency coupling - Google Patents
A kind of oscillating aging system and method for multifrequency coupling Download PDFInfo
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- CN105506267B CN105506267B CN201510992080.8A CN201510992080A CN105506267B CN 105506267 B CN105506267 B CN 105506267B CN 201510992080 A CN201510992080 A CN 201510992080A CN 105506267 B CN105506267 B CN 105506267B
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- 230000032683 aging Effects 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008878 coupling Effects 0.000 title claims abstract description 11
- 238000010168 coupling process Methods 0.000 title claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 11
- 230000035882 stress Effects 0.000 claims abstract description 53
- 238000009825 accumulation Methods 0.000 claims abstract description 46
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 25
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 25
- 230000001133 acceleration Effects 0.000 claims abstract description 21
- 238000001228 spectrum Methods 0.000 claims abstract description 10
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- 238000009826 distribution Methods 0.000 claims description 27
- 238000004458 analytical method Methods 0.000 claims description 5
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- 238000002441 X-ray diffraction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
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- 230000003321 amplification Effects 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
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- 238000010791 quenching Methods 0.000 description 1
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- 238000005096 rolling process Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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Abstract
The present invention relates to vibration aging technology field, refers in particular to a kind of oscillating aging system and method for multifrequency coupling.System is made up of master system, signal output card, driver, vibrator, acceleration transducer, charge amplifier, data acquisition card, support meanss；Workpiece is mutually permanently connected with vibrator；Workpiece is supported using support meanss, so that vibrator carries out exciting to workpiece；Master system control signal output card output synthesis accumulation signal；Vibrator is driven to produce vibration after driver amplification synthesis accumulation signal；The voltage signal that master system is collected by computer interface acquisition data acquisition card, and the frequency spectrum that Fast Fourier Transform (FFT) obtains voltage signal is carried out to voltage signal；Voltage identification module obtains each voltage peak U on preferably a set of Frequency point from frequency spectrumi；A after conversioni, whenWhen this condition is satisfied, then master system control signal output card carries out vibration stress relief treatment to workpiece in the case where synthesizing accumulation signal.
Description
Technical field
The present invention relates to vibration aging technology field, refers in particular to a kind of oscillating aging system and method for multifrequency coupling.
Technical background
Vibration aging technology is widely used method for removing residual stress in mechanical engineering field, i.e., applies machine to workpiece
Tool oscillating load, when the residual stress of inside workpiece exceedes the local yielding limit of material with additional vibration stress sum,
Local plastic deformation will occur for material internal, so that the local residual stress of material internal is released.
Traditional vibration aging technology is to carry out frequency sweep vibration to workpiece first, finds the intrinsic frequency of workpiece, Ran Hou
The specific frequency of subresonance regional choice of intrinsic frequency is as excited frequency；Then workpiece is determined under the excited frequency
Frequency vibration Ageing Treatment, such vibration stress relief treatment mode belong to single-frequency vibration aging technology.But workpiece is by such as quenching
Fire, cutting, grinding, rolling etc. be after mode working process, inside workpiece can produce multi-form the defects of, so as in workpiece
The residual stress distribution state that portion is formed is considerably complicated.It can be seen from the basic theories of Reformation of Mechanical Vibration, every rank of workpiece
Intrinsic frequency and each order harmonic frequency all correspond to a natural mode of vibration of workpiece, and each natural mode of vibration is all corresponding with dynamic answer
Power, which is distributed larger region, also the less region of dynamic stress distribution, if now simply being carried out to workpiece at single-frequency oscillating aging
Reason, can only have to the residual stress of dynamic stress distribution large area part corresponding with residual stress distribution large area preferable
Eradicating efficacy, and workpiece remainder distribution larger residual stress can not be effectively eliminated, if desired relax workpiece
The larger residual stress of various pieces distribution, best mode is to carry out random excitation to workpiece, because the frequency of random signal
Domain is continuous, however to workpiece carry out random excitation when vibration energy can be distributed to whole broad frequency range, so pass
The energy of bond frequency point is smaller, is unfavorable for eliminating the residual stress of inside workpiece each several part.Although adjust the output energy of driver
Amount, it is possible to increase the energy of random excitation, but such regulation is limited eventually, causes the energy of key frequency point to remain unchanged
It is smaller, therefore random vibration ageing technique is applied in mechanical engineering field, has certain limitation.
The content of the invention
In order to overcome the shortcomings of single-frequency vibration aging technology and random vibration ageing technique, the present invention proposes a kind of multifrequency coupling
The oscillating aging system and method for conjunction.
The oscillating aging system of multifrequency coupling, including master system, signal output card, driver, vibrator, acceleration
Sensor, charge amplifier, data acquisition card, support meanss；Vibrator is fixed on workpiece surface, and workpiece is arranged on flexible
Support meanss on, master system control signal output card output synthesis accumulation signal；The synthesis of signal output card output swashs
The signal that shakes inputs vibrator via driver, and then drives vibrator to produce vibration；Acceleration transducer is arranged on workpiece, is added
The input channel of velocity sensor and charge amplifier is connected, and the output channel of charge amplifier is connected with data acquisition card, is believed
Number capture card is connected with master system.
Master system includes the accumulation signal synthesis module of definition synthesis accumulation signal, obtains data acquisition card and collects
Voltage signal voltage signal read module, the FFT module of Fast Fourier Transform (FFT) (FFT) is carried out to voltage signal, from fast
The voltage identification module of each Frequency point voltage peak is obtained in fast Fourier transformation result, voltage peak is converted into output shakes
The vibration level modular converter of level, and the threshold limit value setup module of vibration level.
Further, acceleration transducer is piezoelectric acceleration transducer.
Further, support meanss are flexible member.
The method that the oscillating aging system coupled using multifrequency eliminates workpiece residual stress comprises the following steps：
(1) workpiece is fixedly connected with vibrator；Workpiece is supported using support meanss, so that vibrator is to workpiece
Carry out exciting；Signal link is connected, is switched on power.
(2) the residual stress distribution state of workpiece is obtained by X-ray diffraction method, determines its peak value residual stress in workpiece
On particular location.
(3) numerical value model analysis is carried out to workpiece using FEM-software ANSYS, obtain each rank intrinsic frequency of workpiece with
And each order harmonic frequency.
(4) it is used to synthesize accumulation signal according to the residual stress distribution state of workpiece, the preferably sinusoidal signal of a class frequency.
(5) Threshold extent of each vibration level corresponding with preferably a set of frequency is set in vibration level threshold limit value setup module
Value δi, i=1,2 ..., n；Wherein n is positive integer, is the number of preferably a set of frequency.
(6) accumulation signal synthesis module synthesizes preferably a set of sinusoidal signal the accumulation signal for oscillating aging；On
The digital accumulation signal of synthesis is converted to simulation accumulation signal by position machine system by signal output card；The output of signal output card
Simulate accumulation signal and input vibrator via driver, so as to drive vibrator to produce vibration.
(7) the Workpiece vibration signal that acceleration transducer collects is converted to voltage signal via charge amplifier；Signal
The analog voltage signal collected is converted to digital voltage signal by capture card；Voltage signal read module obtains data acquisition card
The digital voltage signal collected；FFT module carries out the frequency that Fast Fourier Transform (FFT) obtains voltage signal to digital voltage signal
Spectrum；Voltage identification module obtains each voltage peak U on preferably a set of Frequency point from frequency spectrumi, i=1,2 ..., n；Its
Middle n is positive integer, is the number of preferably a set of frequency；Vibration level modular converter by each voltage peak of acquisition be converted to it is excellent
Each output vibration level a corresponding to one class frequency of choosingi, i=1,2 ..., n；Wherein n is positive integer, is preferably a set of frequency
Number；Judge whetherD is the margin for error allowed, if so, then master system holding is preferably a set of just
The voltage magnitude u of string signaliIt is constant, i=1,2 ..., n；Wherein n is positive integer, is the number of preferably a set of frequency, simultaneously
Master system control signal output card output synthesis accumulation signal, is carried out at oscillating aging to workpiece in the case where synthesizing accumulation signal
Reason；If it is not, then master system changes the voltage magnitude u of preferably a set of sinusoidal signal automaticallyi, i=1,2 ..., n；Wherein n
It is the number of preferably a set of frequency for positive integer, and the input voltage U of programmable drives input vibratorinput, Uinput<
Ushangxian, wherein UshangxianFor the upper limit operation voltage of vibrator, untilThis condition be satisfied for
Only, then now master system control signal output card carries out vibration stress relief treatment to workpiece in the case where synthesizing accumulation signal.
The signal link includes signal link, master system and the signal between master system and signal output card
Between the signal link between signal link, master system and driver, signal output card and driver between capture card
Signal link, the signal link between data acquisition card and charge amplifier, the signal link between driver and vibrator,
Signal link between acceleration transducer and charge amplifier；The power supply includes master system, signal output card, signal
Capture card, driver, the power supply of charge amplifier and vibrator.
In step (4), according to the residual stress distribution state of workpiece, the preferably sinusoidal signal of a class frequency includes following step
Suddenly：
(4.1) determined using FEM-software ANSYS corresponding to each rank intrinsic frequency and each order harmonic frequency of workpiece
Natural mode of vibration, determine the region that dynamic stress distribution is larger on each natural mode of vibration.
(4.2) according to the distribution of workpiece residual stress, peak value residual stress distribution region and dynamic stress point are determined
The consistent natural mode of vibration of cloth large area, the frequency that frequency corresponding to the natural mode of vibration as preferably goes out.
(4.3) according to step (4.1) and the process of (4.2), the sinusoidal signal that can preferably go out a class frequency is used to synthesize
The accumulation signal of multifrequency coupled vibrations ageing technique.
The present invention technical concept be：By master system, signal output card, driver, vibrator, acceleration sensing
Device, charge amplifier, data acquisition card, support meanss form the oscillating aging system of multifrequency coupling；Workpiece is mutual with vibrator
It is fixedly connected；Workpiece is supported using support meanss, so that vibrator carries out exciting to workpiece；Master system control letter
Number output card output synthesis accumulation signal；Vibrator is driven to produce vibration after driver amplification synthesis accumulation signal；Host computer system
The voltage signal that system is collected by computer interface acquisition data acquisition card, and Fast Fourier Transform (FFT) is carried out to voltage signal
Obtain the frequency spectrum of voltage signal；Voltage identification module obtains each voltage peak U on preferably a set of Frequency point from frequency spectrumi
(i=1,2 ..., n；Wherein n is positive integer, is the number of preferably a set of frequency)；Vibration level modular converter is by each electricity of acquisition
Voltage crest value is converted to each output vibration level a corresponding with preferably a set of frequencyi(i=1,2 ..., n；Wherein n is positive integer, is
The number of preferably a set of frequency)；WhenWhen this condition is satisfied, then master system control signal is defeated
Card release carries out vibration stress relief treatment to workpiece in the case where synthesizing accumulation signal.
Beneficial effects of the present invention are as follows：
1st, the present invention realizes and multifrequency coupled vibrations Ageing Treatment is carried out to workpiece, and multifrequency coupled vibrations Ageing Treatment
Technology has more preferable residual stress eradicating efficacy relative to single-frequency vibration stress relief treatment technology.
2nd, multifrequency coupled vibrations Ageing Treatment technology can effectively eliminate each peak value residual stress being distributed on workpiece,
The effect of vibration homogenizing residual stress can be improved relative to single-frequency vibration aging technology.
3rd, multifrequency coupled vibrations Ageing Treatment technology carries out the process of vibration stress relief treatment to workpiece all by host computer system
System is automatically performed, and without manually operated, reduced workload, is improved the efficiency of work.
4th, the present invention is not that the resonant frequency of workpiece is found with traditional frequency sweeping method, but uses finite element software to work
Part carries out numerical value model analysis, obtains each rank intrinsic frequency of workpiece and each order harmonic frequency, and can obtain each rank and consolidate
There are frequency and the natural mode of vibration corresponding to each order harmonic frequency, and then determine that dynamic stress distribution is larger on each natural mode of vibration
Region；Then the sinusoidal signal for preferably going out a class frequency according to the residual stress distribution state of workpiece is used to synthesize exciting letter
Number, it can accomplish to carry out multi-dimensional vibration Ageing Treatment to workpiece, improve the effect that vibration eliminates residual stress.
5th, the intrinsic frequency of workpiece is found using the method for frequency sweep, inherently shaking corresponding to intrinsic frequency can not be obtained
Type, while when the intrinsic frequency of workpiece exceedes the operating frequency range of vibrator, list can not just be obtained by the method for frequency sweep
The excited frequency of frequency vibration timeliness, this is also the maximum problem run into during single-frequency vibration aging technology popularization and application.This
Invention carries out numerical value model analysis using finite element software to workpiece, can not only obtain each rank intrinsic frequency of workpiece and each
Order harmonic frequency, and natural mode of vibration corresponding to each rank intrinsic frequency and each order harmonic frequency can be obtained, even if workpiece
Intrinsic frequency exceedes the operating frequency range of vibrator, can also choose the low order harmonics frequency of workpiece to synthesize accumulation signal,
To carry out multifrequency coupled vibrations Ageing Treatment to workpiece.Therefore multifrequency coupled vibrations Ageing Treatment technology energy provided by the invention
Enough improve the application of vibration aging technology.
Brief description of the drawings
The oscillating aging system schematic diagram of Fig. 1 multifrequencies coupling.
Embodiment
Referring to the drawings, the present invention is further illustrated：
The oscillating aging system of multifrequency coupling, including master system, signal output card, driver, vibrator 1, acceleration
Spend sensor 2, charge amplifier, data acquisition card, support meanss 4；Vibrator 1 is fixed on the surface of workpiece 3, and workpiece 3 is arranged on
In flexible support meanss 4, master system control signal output card output synthesis accumulation signal；Signal output card exports
Synthesis accumulation signal via driver input vibrator 1, and then drive vibrator 1 produce vibration；Acceleration transducer 2 is installed
On workpiece 3, acceleration transducer 2 is connected with the input channel of charge amplifier, the output channel and signal of charge amplifier
Capture card is connected, and data acquisition card is connected with master system.
Master system includes the accumulation signal synthesis module of definition synthesis accumulation signal, obtains data acquisition card and collects
Voltage signal voltage signal read module, the FFT module of Fast Fourier Transform (FFT) (FFT) is carried out to voltage signal, from fast
The voltage identification module of each Frequency point voltage peak is obtained in fast Fourier transformation result, voltage peak is converted into output shakes
The vibration level modular converter of level, and the threshold limit value setup module of vibration level.
Further, acceleration transducer 2 is piezoelectric acceleration transducer.
Further, support meanss 4 are flexible member.
The method that the oscillating aging system coupled using multifrequency eliminates the residual stress of workpiece 3 comprises the following steps：
(1) workpiece 3 is fixedly connected with vibrator 1；Workpiece 3 is supported using support meanss 4, so as to vibrator 1
Exciting is carried out to workpiece 3；Signal link is connected, is switched on power.
(2) the residual stress distribution state of workpiece 3 is obtained by X-ray diffraction method, determines its peak value residual stress in work
Particular location on part 3.
(3) numerical value model analysis is carried out to workpiece 3 using FEM-software ANSYS, obtains each rank intrinsic frequency of workpiece 3
And each order harmonic frequency.
(4) it is used to synthesize exciting letter according to the residual stress distribution state of workpiece 3, the preferably sinusoidal signal of a class frequency
Number.
(5) Threshold extent of each vibration level corresponding with preferably a set of frequency is set in vibration level threshold limit value setup module
Value δi, i=1,2 ..., n；Wherein n is positive integer, is the number of preferably a set of frequency.
(6) accumulation signal synthesis module synthesizes preferably a set of sinusoidal signal the accumulation signal for oscillating aging；On
The digital accumulation signal of synthesis is converted to simulation accumulation signal by position machine system by signal output card；The output of signal output card
Simulate accumulation signal and input vibrator 1 via driver, so as to drive vibrator 1 to produce vibration.
(7) vibration signal of workpiece 3 that acceleration transducer 2 collects is converted to voltage signal via charge amplifier；Letter
The analog voltage signal collected is converted to digital voltage signal by number capture card；Voltage signal read module obtains signal acquisition
Block the digital voltage signal collected；FFT module carries out Fast Fourier Transform (FFT) to digital voltage signal and obtains voltage signal
Frequency spectrum；Voltage identification module obtains each voltage peak U on preferably a set of Frequency point from frequency spectrumi, i=1,2 ..., n；
Wherein n is positive integer, is the number of preferably a set of frequency；Vibration level modular converter by each voltage peak of acquisition be converted to
Each output vibration level a corresponding to preferably a set of frequencyi, i=1,2 ..., n；Wherein n is positive integer, is preferably a set of frequency
Number；Judge whetherD is the margin for error allowed, if so, then master system keeps preferably a set of
The voltage magnitude u of sinusoidal signaliIt is constant, i=1,2 ..., n；Wherein n is positive integer, is the number of preferably a set of frequency, together
When master system control signal output card output synthesis accumulation signal, to workpiece 3 when being vibrated under synthesizing accumulation signal
Effect processing；If it is not, then master system changes the voltage magnitude u of preferably a set of sinusoidal signal automaticallyi, i=1,2 ..., n；Its
Middle n is positive integer, is the number of preferably a set of frequency, and programmable drives input the input voltage U of vibrator 1input,
Uinput<Ushangxian, wherein UshangxianFor the upper limit operation voltage of vibrator 1), untilThis condition is able to
Untill satisfaction, then now master system control signal output card is carried out at oscillating aging to workpiece 3 in the case where synthesizing accumulation signal
Reason.
The signal link includes signal link, master system and the signal between master system and signal output card
Between the signal link between signal link, master system and driver, signal output card and driver between capture card
Signal link, the signal link between data acquisition card and charge amplifier, the signal between driver and vibrator 1 connect
Signal link between line, acceleration transducer 2 and charge amplifier；The power supply include master system, signal output card,
Data acquisition card, driver, the power supply of charge amplifier and vibrator 1.
In step (4), according to the residual stress distribution state of workpiece 3, the preferably sinusoidal signal of a class frequency includes following
Step：
(4.1) determined using FEM-software ANSYS corresponding to each rank intrinsic frequency and each order harmonic frequency of workpiece 3
Natural mode of vibration, determine the region that dynamic stress distribution is larger on each natural mode of vibration.
(4.2) according to the distribution of the residual stress of workpiece 3, peak value residual stress distribution region and dynamic stress point are determined
The consistent natural mode of vibration of cloth large area, the frequency that frequency corresponding to the natural mode of vibration as preferably goes out.
(4.3) according to step (4.1) and the process of (4.2), the sinusoidal signal that can preferably go out a class frequency is used to synthesize
The accumulation signal of multifrequency coupled vibrations ageing technique.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (5)
- A kind of 1. oscillating aging system of multifrequency coupling, it is characterised in that：The system includes master system, signal output Card, driver, vibrator, acceleration transducer, charge amplifier, data acquisition card, support meanss；Vibrator is fixed on workpiece Surface, workpiece are arranged in flexible support meanss, master system control signal output card output synthesis accumulation signal； The synthesis accumulation signal of signal output card output inputs vibrator via driver, and then drives vibrator to produce vibration；Accelerate Spend sensor to be arranged on workpiece, the input channel connection of acceleration transducer and charge amplifier, the output of charge amplifier Passage is connected with data acquisition card, and data acquisition card is connected with master system；Master system includes definition synthesis exciting letter Number accumulation signal synthesis module, the voltage signal read module of voltage signal that data acquisition card collects is obtained, to voltage Signal carries out the FFT module of Fast Fourier Transform (FFT) (FFT), and each Frequency point voltage is obtained from Fast Fourier Transform (FFT) result The voltage identification module of peak value, voltage peak is converted into the vibration level modular converter of output vibration level and the threshold limit value of vibration level is set Put module.
- A kind of 2. oscillating aging system of multifrequency coupling as claimed in claim 1, it is characterised in that：The acceleration transducer For piezoelectric acceleration transducer, the support meanss are flexible member.
- 3. the method that the oscillating aging system coupled using multifrequency as claimed in claim 1 eliminates workpiece residual stress, it is special Sign is to comprise the following steps that：(1) workpiece is fixedly connected with vibrator；Workpiece is supported using support meanss, so that vibrator is carried out to workpiece Exciting；Signal link is connected, is switched on power；(2) the residual stress distribution state of workpiece is obtained by X-ray diffraction method, determines its peak value residual stress on workpiece Particular location；(3) numerical value model analysis is carried out to workpiece using FEM-software ANSYS, obtains each rank intrinsic frequency of workpiece and each Order harmonic frequency；(4) it is used to synthesize accumulation signal according to the residual stress distribution state of workpiece, the preferably sinusoidal signal of a class frequency；(5) the threshold limit value δ of each vibration level corresponding with preferably a set of frequency is set in vibration level threshold limit value setup modulei, I=1,2 ..., n；Wherein n is positive integer, is the number of preferably a set of frequency；(6) accumulation signal synthesis module synthesizes preferably a set of sinusoidal signal the accumulation signal for oscillating aging；Host computer The digital accumulation signal of synthesis is converted to simulation accumulation signal by system by signal output card；The simulation of signal output card output Accumulation signal inputs vibrator via driver, so as to drive vibrator to produce vibration；(7) the Workpiece vibration signal that acceleration transducer collects is converted to voltage signal via charge amplifier；Signal acquisition The analog voltage signal collected is converted to digital voltage signal by card；Voltage signal read module obtains data acquisition card collection The digital voltage signal arrived；FFT module carries out the frequency spectrum that Fast Fourier Transform (FFT) obtains voltage signal to digital voltage signal；Electricity Pressure identification module obtains each voltage peak U on preferably a set of Frequency point from frequency spectrumi, i=1,2 ..., n；Wherein n is Positive integer, it is the number of preferably a set of frequency；Vibration level modular converter by each voltage peak of acquisition be converted to preferably Each output vibration level a corresponding to one class frequencyi, i=1,2 ..., n；Wherein n is positive integer, is of preferably a set of frequency Number；Judge whetherD is the margin for error allowed, if so, then master system keeps preferably a set of sinusoidal letter Number voltage magnitude uiIt is constant, i=1,2 ..., n；Wherein n is positive integer, is the number of preferably a set of frequency, while upper Machine system control signal output card output synthesis accumulation signal, vibration stress relief treatment is carried out to workpiece in the case where synthesizing accumulation signal； If it is not, then master system changes the voltage magnitude u of preferably a set of sinusoidal signal automaticallyi, i=1,2 ..., n；Wherein n is just Integer, it is the number of preferably a set of frequency, and programmable drives input the input voltage U of vibratorinput, Uinput＜ Ushangxian, wherein UshangxFor the upper limit operation voltage of vibrator, untilUntill this condition is satisfied, then Now master system control signal output card carries out vibration stress relief treatment to workpiece in the case where synthesizing accumulation signal.
- 4. method as claimed in claim 3, it is characterised in that：The signal link includes master system and signal output card Between signal link, the signal link between master system and data acquisition card, between master system and driver Signal between signal link, data acquisition card and charge amplifier between signal link, signal output card and driver connects The signal link between signal link, acceleration transducer and charge amplifier between line, driver and vibrator；The electricity Source includes the power supply of master system, signal output card, data acquisition card, driver, charge amplifier and vibrator.
- 5. method as claimed in claim 3, it is characterised in that：In step (4), according to the residual stress distribution state of workpiece, It is preferred that the sinusoidal signal of a class frequency comprises the following steps：(4.1) using FEM-software ANSYS determine workpiece each rank intrinsic frequency and each order harmonic frequency corresponding to consolidate There is the vibration shape, determine the region that dynamic stress distribution is larger on each natural mode of vibration；(4.2) according to the distribution of workpiece residual stress, determine peak value residual stress distribution region and dynamic stress distribution compared with The consistent natural mode of vibration in big region, the frequency that frequency corresponding to the natural mode of vibration as preferably goes out；(4.3) according to step (4.1) and the process of (4.2), the sinusoidal signal that can preferably go out a class frequency is used to synthesize multifrequency The accumulation signal of coupled vibrations ageing technique.
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| CN105861811B (en) * | 2016-04-28 | 2018-02-02 | 上海海事大学 | A kind of online quantitative evaluation system and method for effect of vibration stress relief |
| CN109321743B (en) | 2018-09-10 | 2023-05-23 | 上海海事大学 | System and method for determining vibration aging excitation frequency |
| CN109182727B (en) * | 2018-09-10 | 2023-03-31 | 上海海事大学 | System and method for determining vibration aging process parameters based on acoustic emission technology |
| CN109182728B (en) * | 2018-09-10 | 2023-08-18 | 上海海事大学 | Green intelligent vibration aging system and method |
| CN110578049B (en) * | 2019-10-18 | 2020-12-29 | 北京航空航天大学 | High-low frequency vibration-thermal ageing composite stress homogenizing device based on modal control |
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| CN100485053C (en) * | 2005-08-26 | 2009-05-06 | 北京翔博科技有限责任公司 | Method of full-automatic vibration processing work-piece by frequency spectrum analysis |
| CN101967553A (en) * | 2010-10-12 | 2011-02-09 | 北京翔博科技有限责任公司 | Three-dimensional vibration stress relief multitask acquisition and control system and method thereof |
| CN102816920A (en) * | 2011-06-10 | 2012-12-12 | 安徽省科捷再生能源利用有限公司 | Frequency spectrum harmonic wave aging device |
| CN103773945B (en) * | 2014-01-25 | 2016-05-04 | 浙江大学 | Vibratory stress relief vibration level real-time testing system and automatic adjusting method |
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