CN105420485B - A kind of adaptive oscillating aging system of dynamic stress and method - Google Patents
A kind of adaptive oscillating aging system of dynamic stress and method Download PDFInfo
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- CN105420485B CN105420485B CN201510990674.5A CN201510990674A CN105420485B CN 105420485 B CN105420485 B CN 105420485B CN 201510990674 A CN201510990674 A CN 201510990674A CN 105420485 B CN105420485 B CN 105420485B
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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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- Crystallography & Structural Chemistry (AREA)
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Abstract
The present invention relates to vibration aging technology field, refers in particular to a kind of adaptive oscillating aging system of dynamic stress and method.System is made up of processor, signal generator, driver, vibrator, foil gauge and dynamic strain indicator；Workpiece is mutually permanently connected with vibrator；Workpiece is supported by support meanss；Processor control signal generator exports excited frequency；Vibrator is driven after driver amplification accumulation signal, workpiece is carried out to determine frequency vibration Ageing Treatment；Processor reads the strain waveform that collects of dynamic strain indicator by computer interface and obtains the peak value of strain waveform, then calculates the extra dynamic stress σ acted on workpieced；Processor calculates the attenuation △ σ of residual stress every △ tr；Simultaneous processor is by σd+△σrSubstitute into the output voltage U for calculating now driver△t；The input voltage of processor automatic programme control driver input vibrator is arranged to U△t, it is achieved thereby that carrying out adaptive adjustment to acting on the extra dynamic stress on workpiece.
Description
Technical field
The present invention relates to vibration aging technology field, refers in particular to a kind of adaptive oscillating aging system of dynamic stress and method.
Background technology
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 yield limit of material with additional dynamic stress sum, in material
Portion will be plastically deformed, so that the residual stress of material internal is released.
When carrying out vibration stress relief treatment to workpiece, its internal residual stress relaxes constantly, i.e., with vibration
The residual stress of the progress inside workpiece of Ageing Treatment is constantly being reduced；Existing Vibration Aging Process, for acting on work
Extra dynamic stress on part is extra dynamic stress invariable, i.e., that vibration stress relief treatment initial time is acted on workpiece,
So necessarily cause inside workpiece residual stress and extra dynamic stress sum constantly to reduce, when both and less than material bend
When taking the limit, the residual stress of material internal can not relax again, therefore, in order to improve Relieving Residual Stress in Libration
Effect is it is necessary to dynamic extra dynamic stress of the corrective action on workpiece during vibration stress relief treatment.
The content of the invention
The extra dynamic stress acted on workpiece is monitored in order to accurate, real-time, and extra dynamic stress is carried out
Adaptive adjustment, the present invention propose a kind of adaptive oscillating aging system of dynamic stress and method.
The adaptive oscillating aging system of dynamic stress, including processor, signal generator, driver, vibrator, strain
Piece, dynamic strain indicator, support meanss；Vibrator is fixed on workpiece surface, and workpiece is arranged in flexible support meanss；Place
Manage device control signal generator output amplitude and the sine excitation signal of frequency independence and continuously adjustabe；Signal generator exports
Sine excitation signal via driver input vibrator, and then drive vibrator produce vibration.
Processor programmable drives input the input voltage of vibrator, so as to which adaptive adjustment vibrator acts on workpiece
On extra dynamic stress.
Strain gauge adhesion is on workpiece, and the lead-out wire of foil gauge and the input channel of dynamic strain indicator are connected with each other, dynamic
The output channel of deformeter is connected with each other with processor；
Processor includes the strain waveform read module for obtaining the strain waveform that dynamic strain indicator collects, from strain waveform
The middle strain identification module for obtaining strain peak value ε (μ ε), Elastic Moduli of Workpieces setup module, the strain peak value of acquisition is converted to
The dynamic stress modular converter of extra dynamic stress, residual stress attenuation Δ σr(MPa) mutually closed between time of vibration t (min)
It is setup module, driver inputs the input voltage U (V) and extra dynamic stress σ of vibratord(MPa) correlation is set between
Module.
The elastic modulus E (GPa) of workpiece is preset with Elastic Moduli of Workpieces setup module；Extra dynamic stress and strain peak value
Transformational relation beWherein σdFor extra dynamic stress, extra dynamic stress is shown by the display interface of processor
Show to user.
Further, dynamic strain indicator is high-precision multi-path dynamic strain indicator.
Further, support meanss are flexible member.
Method for adaptively adjusting dynamic stress comprises the following steps：
(1) the residual stress distribution state of workpiece is obtained by X-ray diffraction method, determines peak value residual stress on workpiece
Particular location, at the residual stress peak value of workpiece paste foil gauge.
(2) workpiece is fixedly connected with vibrator；Workpiece is supported by support meanss, so that vibrator is to workpiece
Carry out exciting；Signal link is connected, is switched on power.
(3) elastic modulus E (GPa) of workpiece is set in Elastic Moduli of Workpieces setup module；In residual stress attenuation
Δσr(MPa) the preset Δ σ in correlation setup module between time of vibration t (min)rThe function table of correlation between t
Up to formula；In driver input vibrator voltage U (V) and extra dynamic stress σd(MPa) preset U in correlation setup module between
With σdBetween correlation function expression.
(4) strain waveform read module obtains the strain waveform that dynamic strain indicator collects；Identification module is strained from strain
Strain peak value ε (μ ε) is obtained in waveform；The transformational relation of the extra dynamic stress exported in dynamic stress modular converter and strain peak value
For：
(5) processor control signal generator carries out frequency sweep vibration to workpiece, so as to obtain the exciting of oscillating aging automatically
Frequency f, and under the excited frequency workpiece is carried out determining frequency vibration Ageing Treatment.
(6) processor every Δ t (Δ t=1min) time automatically according to Δ σrThe function representation of correlation between t
Formula, calculate the attenuation Δ σ of residual stressr, i.e., the extra dynamic stress now acted on workpiece should be adjusted to σd+Δσr；Simultaneously
Processor is by σd+ΔσrSubstitute into U and σdBetween correlation function expression, calculate the output voltage of now driver
UΔt；The input voltage of processor automatic programme control driver input vibrator is arranged to UΔt(UΔt<UThe upper limit, wherein UThe upper limitFor vibrator
The upper limit of operating voltage), it is achieved thereby that carrying out adaptive adjustment to acting on the extra dynamic stress on workpiece.
The signal link includes the signal link between processor and signal generator；Between processor and driver
Signal link；Signal link between processor and dynamic strain indicator；Signal link between signal generator and driver；Drive
Dynamic signal link between device and vibrator；Signal link between foil gauge and dynamic strain indicator；The power supply includes processing
Device, driver, signal generator, the power supply of dynamic strain indicator and vibrator.
The present invention technical concept be：Should by processor, signal generator, driver, vibrator, foil gauge and dynamic
Become instrument and form the adaptive oscillating aging system of dynamic stress；Workpiece is mutually permanently connected with vibrator；By support meanss to work
Part is supported, so that vibrator carries out exciting to workpiece；Processor control signal generator output excited frequency f；Driver
Vibrator is driven after amplification accumulation signal, workpiece is carried out to determine frequency vibration Ageing Treatment；Processor is read by computer interface
Strain waveform that dynamic strain indicator collects simultaneously obtains the peak value of strain waveform, then calculate act on it is additional dynamic on workpiece
Stress σd；Processor is every Δ t (Δ t=1min) time automatically according to Δ σrThe function expression of correlation between t, meter
Calculate the attenuation Δ σ of residual stressr；Simultaneous processor is by σd+ΔσrSubstitute into U and σdBetween correlation function expression, meter
Calculate the output voltage U of now driverΔt；The input voltage of processor automatic programme control driver input vibrator is arranged to UΔt
(UΔt<UThe upper limit, wherein UThe upper limitFor the upper limit of vibrator operating voltage), it is achieved thereby that to acting on the extra dynamic stress on workpiece
Carry out adaptive adjustment.
Beneficial effects of the present invention are as follows：
1st, the strain waveform that dynamic strain indicator exports can be converted to extra dynamic stress, in real time, knows effect exactly
Extra dynamic stress on workpiece.
2nd, processor can calculate the attenuation of inside workpiece residual stress during oscillating aging in real time, according to workpiece
The attenuation of internal residual stress, adjust automatically driver input the input voltage of vibrator, so as to during oscillating aging
Extra dynamic stress of the adaptive corrective action on workpiece, it is ensured that the effect of Relieving Residual Stress in Libration.
3rd, processor can automatically determine to act on the extra dynamic stress on workpiece, inside workpiece during oscillating aging
The input voltage of attenuation and driver the input vibrator of residual stress, without manually operated, reduces workload, improves
The efficiency of work.
Brief description of the drawings
The adaptive oscillating aging system schematic diagram of Fig. 1 dynamic stress.
Embodiment
Referring to the drawings, the present invention is further illustrated：
The adaptive oscillating aging system of dynamic stress, including processor, signal generator, driver, vibrator 1, strain
Piece 2, dynamic strain indicator, support meanss 4；Vibrator 1 is fixed on the surface of workpiece 3, and workpiece 3 is arranged on flexible support meanss
On 4；Processor control signal generator output amplitude and the sine excitation signal of frequency independence and continuously adjustabe；Signal occurs
The sine excitation signal of device output inputs vibrator 1 via driver, and then drives vibrator 1 to produce vibration.
Processor programmable drives input the input voltage of vibrator 1, so as to which adaptive adjustment vibrator 1 acts on work
Extra dynamic stress on part 3.
Foil gauge 2 is pasted onto on workpiece 3, and the lead-out wire of foil gauge 2 and the input channel of dynamic strain indicator are connected with each other, and are moved
The output channel of state deformeter is connected with each other with processor；
Processor includes the strain waveform read module for obtaining the strain waveform that dynamic strain indicator collects, from strain waveform
The middle strain identification module for obtaining strain peak value ε (μ ε), the modulus of elasticity setup module of workpiece 3, the strain peak value of acquisition is changed
For the dynamic stress modular converter of extra dynamic stress, residual stress attenuation Δ σr(MPa) between time of vibration t (min) mutually
Relation setup module, driver input the input voltage U (V) and extra dynamic stress σ of vibrator 1d(MPa) correlation is set between
Put module.
The elastic modulus E (GPa) of workpiece 3 is preset with the modulus of elasticity setup module of workpiece 3；Extra dynamic stress and strain peak
The transformational relation of value isWherein extra dynamic stress is shown to user by the display interface of processor.
Further, dynamic strain indicator is high-precision multi-path dynamic strain indicator.
Further, support meanss 4 are flexible member.
Method for adaptively adjusting dynamic stress comprises the following steps：
(1) the residual stress distribution state of workpiece 3 is obtained by X-ray diffraction method, determines peak value residual stress in workpiece 3
On particular location, at the residual stress peak value of workpiece 3 paste foil gauge 2.
(2) workpiece 3 is fixedly connected with vibrator 1；Workpiece 3 is supported by support meanss 4, so as to vibrator 1
Exciting is carried out to workpiece 3；Signal link is connected, is switched on power.
(3) elastic modulus E (GPa) of workpiece 3 is set in the modulus of elasticity setup module of workpiece 3；Decay in residual stress
Measure Δ σr(MPa) the preset Δ σ in correlation setup module between time of vibration t (min)rThe function of correlation between t
Expression formula；In the driver input voltage U (V) of vibrator 1 and extra dynamic stress σd(MPa) it is pre- in correlation setup module between
Put U and σdBetween correlation function expression.
(4) strain waveform read module obtains the strain waveform that dynamic strain indicator collects；Identification module is strained from strain
Strain peak value ε (μ ε) is obtained in waveform；The transformational relation of the extra dynamic stress exported in dynamic stress modular converter and strain peak value
For：
(5) processor control signal generator carries out frequency sweep vibration to workpiece 3, so as to obtain the exciting of oscillating aging automatically
Frequency f, and under the excited frequency workpiece 3 is carried out determining frequency vibration Ageing Treatment.
(6) processor every Δ t (Δ t=1min) time automatically according to Δ σrThe function representation of correlation between t
Formula, calculate the attenuation Δ σ of residual stressr, i.e., the extra dynamic stress now acted on workpiece 3 should be adjusted to σd+Δσr；Together
When processor by σd+ΔσrSubstitute into U and σdBetween correlation function expression, calculate the output voltage of now driver
UΔt；The input voltage of processor automatic programme control driver input vibrator 1 is arranged to UΔt(UΔt<UThe upper limit, wherein UThe upper limitFor vibrator
The upper limit of 1 operating voltage), it is achieved thereby that carrying out adaptive adjustment to acting on the extra dynamic stress on workpiece 3.
The signal link includes the signal link between processor and signal generator；Between processor and driver
Signal link；Signal link between processor and dynamic strain indicator；Signal link between signal generator and driver；Drive
Dynamic signal link between device and vibrator 1；Signal link between foil gauge 2 and dynamic strain indicator；The power supply includes place
Manage the power supply of device, driver, signal generator, dynamic strain indicator and vibrator 1.
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 (6)
1. the method for adaptively adjusting dynamic stress using a kind of adaptive oscillating aging system of dynamic stress, the oscillating aging system
System includes processor, signal generator, driver, vibrator, foil gauge, dynamic strain indicator, support meanss；Vibrator is fixed on
Workpiece surface, workpiece are arranged in flexible support meanss；Processor control signal generator output amplitude and frequency are equal
The sine excitation signal of independence and continuously adjustabe；The sine excitation signal of signal generator output inputs exciting via driver
Device, and then drive vibrator to produce vibration；Processor programmable drives input the input voltage of vibrator, so as to adaptive tune
The extra dynamic stress that whole vibrator is acted on workpiece；Strain gauge adhesion is on workpiece, the lead-out wire and dynamic strain of foil gauge
The input channel of instrument is connected with each other, and output channel and the processor of dynamic strain indicator are connected with each other, it is characterised in that method according to
Following steps are carried out：
(1) the residual stress distribution state of workpiece is obtained by X-ray diffraction method, determines tool of the peak value residual stress on workpiece
Body position, foil gauge is pasted at the residual stress peak value of workpiece；
(2) workpiece is fixedly connected with vibrator；Workpiece is supported by support meanss, so that vibrator is carried out to workpiece
Exciting；Signal link is connected, is switched on power；
(3) elastic modulus E of workpiece, unit GPa are set in Elastic Moduli of Workpieces setup module；In residual stress attenuation Δ
σrThe preset Δ σ in correlation setup module between time of vibration trThe function expression of correlation between t；Δσr, it is single
Position MPa, t, unit min；In driver input vibrator voltage U and extra dynamic stress σdBetween it is pre- in correlation setup module
Put U and σdBetween correlation function expression, U, unit V, σd, units MPa；
(4) strain waveform read module obtains the strain waveform that dynamic strain indicator collects；Identification module is strained from strain waveform
It is middle to obtain strain peak value ε, unit μ ε；The transformational relation of the extra dynamic stress exported in dynamic stress modular converter and strain peak value
For：Units MPa；
(5) processor control signal generator carries out frequency sweep vibration to workpiece, so as to obtain the excited frequency of oscillating aging automatically
F, and under the excited frequency workpiece is carried out determining frequency vibration Ageing Treatment；
(6) processor every the Δ t times automatically according to Δ σrThe function expression of correlation, calculates residual stress between t
Attenuation Δ σr, i.e., the extra dynamic stress now acted on workpiece should be adjusted to σd+Δσr；Simultaneous processor is by σd+ΔσrGeneration
Enter U and σdBetween correlation function expression, calculate the output voltage U of now driverΔt；Processor automatic programme control drives
The input voltage of dynamic device input vibrator is arranged to UΔt, UΔt＜ UThe upper limit, wherein UThe upper limitFor the upper limit of vibrator operating voltage, so as to
Realize and carry out adaptive adjustment to acting on the extra dynamic stress on workpiece.
2. the method as described in claim 1, it is characterised in that：Processor includes obtaining the strain wave that dynamic strain indicator collects
The strain waveform read module of shape, obtains strain peak value ε strain identification module from strain waveform, and Elastic Moduli of Workpieces is set
Module, the strain peak value of acquisition is converted into the dynamic stress modular converter of extra dynamic stress, residual stress attenuation Δ σrWith shaking
Correlation setup module between dynamic time t, driver input the input voltage U and extra dynamic stress σ of vibratordBetween mutually
Relation setup module.
3. method as claimed in claim 2, it is characterised in that：The elasticity of workpiece is preset with Elastic Moduli of Workpieces setup module
Modulus E；Extra dynamic stress and strain peak value transformational relation beUnits MPa, wherein σdFor extra dynamic stress, add
Dynamic stress is shown to user by the display interface of processor.
4. the method as described in claim 1, it is characterised in that：The dynamic strain indicator is high-precision multi-path dynamic strain
Instrument, the support meanss are flexible member.
5. the method as described in claim 1, it is characterised in that：The Δ t=1min.
6. the method as described in claim 1, it is characterised in that：The signal link is included between processor and signal generator
Signal link；Signal link between processor and driver；Signal link between processor and dynamic strain indicator；Signal
Signal link between generator and driver；Signal link between driver and vibrator；Foil gauge and dynamic strain indicator
Between signal link；The power supply includes the power supply of processor, driver, signal generator, dynamic strain indicator and vibrator.
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| CN106834657B (en) * | 2016-09-20 | 2020-02-07 | 上海海事大学 | Multidimensional high-frequency micro-vibration aging system and method |
| CN112981293B (en) * | 2021-05-12 | 2021-08-06 | 中国航发北京航空材料研究院 | Vibration aging device and forming vibration aging method for structural wall plate |
Citations (2)
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|---|---|---|---|---|
| CN1546973A (en) * | 2003-11-28 | 2004-11-17 | 汤小牛 | Method of vibration aging and strain detection for workpiece |
| CN203112894U (en) * | 2013-01-28 | 2013-08-07 | 成都海讯科技实业有限公司 | Vibration stress relief system in dynamic stress-amplitude aging mode |
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| CN85102185A (en) * | 1985-04-01 | 1986-08-06 | 铁道部大连机车车辆工厂 | Reduce the method for metal works unrelieved stress stable dimensions precision with mechanical vibration |
| CN101225466B (en) * | 2008-01-24 | 2011-01-12 | 郝俊山 | Novel vibration aging method |
| 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546973A (en) * | 2003-11-28 | 2004-11-17 | 汤小牛 | Method of vibration aging and strain detection for workpiece |
| CN203112894U (en) * | 2013-01-28 | 2013-08-07 | 成都海讯科技实业有限公司 | Vibration stress relief system in dynamic stress-amplitude aging mode |
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Effective date of registration: 20230728 Address after: Room 1701, 17th Floor, Block A, Lane 2157, Hunan Road, Pudong New Area, Shanghai, April 2012 Patentee after: SHANGHAI 17SOON NETWORK TECHNOLOGY Co.,Ltd. Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1 Patentee before: CHANGZHOU University |
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