CN110455485A - A kind of multiple spot lower multiple material blade thermal environment impact performance test device excited by impact - Google Patents

A kind of multiple spot lower multiple material blade thermal environment impact performance test device excited by impact Download PDF

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Publication number
CN110455485A
CN110455485A CN201910771869.9A CN201910771869A CN110455485A CN 110455485 A CN110455485 A CN 110455485A CN 201910771869 A CN201910771869 A CN 201910771869A CN 110455485 A CN110455485 A CN 110455485A
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China
Prior art keywords
module
impact
thermal environment
multiple spot
gun
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CN201910771869.9A
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CN110455485B (en
Inventor
李晖
郭亚冲
张紫文
郭瑞安
李则霖
刘洋
闻邦椿
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Northeastern University China
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Northeastern University China
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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
    • G01M7/08—Shock-testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
    • G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/001—Impulsive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • G01N2203/0044—Pneumatic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0222—Temperature
    • G01N2203/0226—High temperature; Heating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/025—Geometry of the test
    • G01N2203/0258—Non axial, i.e. the forces not being applied along an axis of symmetry of the specimen
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0682—Spatial dimension, e.g. length, area, angle

Abstract

A kind of multiple spot of the invention lower multiple material blade thermal environment impact performance test device excited by impact, comprising: power provides module, measurement module, and multiple spot impacts module, self-clamping module, thermal environment module, bullet recycling module and stage body module；Thermal environment module is set in stage body module, for providing adjustable high temperature test environment；Self-clamping module is set in thermal environment module, for gripping blade test specimen to be measured；Multiple spot impacts module and is set in stage body module, for emitting more bullet impact blade test specimens simultaneously；Power provides module and is used to provide power to multiple spot impact module；Bullet recycling module is placed in thermal environment module and is located at self-clamping module rear for recycling bullet；Measurement module is for measuring magnitude of vibrations, shot orbit, impact force and noise.The device realizes that multiple spot is excited by impact and thermal excitation simultaneously, simulates multiple spot in composite material blade real work and provides more true and reliable experimental data to impact experiment simultaneously by the situation impacted.

Description

A kind of multiple spot lower multiple material blade thermal environment impact performance test device excited by impact
Technical field
The invention belongs to shock dynamics fields, are related to a kind of multiple spot lower multiple material blade thermal environment impact property excited by impact Experimental rig.
Background technique
Rapid advancement and development with aeronautical and space technology, the demand to high-performance aerospace material gradually increase, For a long time, to the high speed machines associated materials such as aircraft research often focus on material static state or low-speed characteristic, thus by Some problems are gradually exposed, and cause some more serious consequences.Fly as appeared in a lot of of U.S.'s the end of last century earliest Machine bird hits accident.As time goes by with the fast development of World Airways traffic, such event more causes related scholar's Extensive concern, dynamic impact problem theory starts to rapidly develop as a result, and shock dynamics experiment also grows up therewith.
Shock dynamics experiment is intended to simulate under various environment that material is to the response condition of high speed impact, and this requires one Relevant Specialty Experiment equipment is covered, current widely used experimental facilities is mostly Hopkinson compression bar, by such experiment Improved device is either produced and is used and is all very extensive based on device, wherein more typical repacking such as patent The V-arrangement improvement of incident bar and transmission club head is realized in CN200810017503.4 and applies compression and shearing simultaneously to test specimen Shock loading；Split hopkinson press bar in patent CN201420107552.8 then can adapt to the test specimen of plurality of specifications. But above-mentioned two patent does not do any consideration to experimental enviroment, this often differs larger with reality situation；
Patent CN208537320U is excited by impact using vertical structure completion of dropping hammer, and has used a kind of based on optoelectronic switch The energy-absorbing pad of control prevents the generation of secondary pulse situation in vertical impact experiment, but structure is complicated for the anti whip device, right Associated components performance requirement is stringent, and higher cost.
Patent CN201710896598.0 use light-gas gun as dynamic impact problem source, can be to sample using mechanical structure Load preset axial compressive force and preset impact force simulate a variety of mechanical environments, but the patent to the thermal environment of test specimen not It takes in, in fact, the pneumatic thermal environment that the components such as most of turbine blades are faced in working condition, it can be to material Performance generates significant impact.Hot environment impact has its unique mechanical characteristic, also should be indispensable in impact experiment One of factor.
In addition, above-mentioned each experimental provision, as other most of existing apparatus, impulse source is single-point impact, however is had When, such as when considering that bird hits problem, the group activity phenomenon of certain array condition is presented in the bird of numerous species, this is often produced A raw more than bird strike phenomenon, problems obviously have entirely different mechanical property with single-point impact, should design one The experimental provision of multiple spot impact simultaneously can be achieved come such issues that simulate in kind.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of multiple spot lower multiple material blade thermal environments excited by impact Impact performance test device, the blade service reliability experiment to carry out under hot conditions, under multiple spot is excited by impact.
The present invention provides a kind of multiple spot lower multiple material blade thermal environment impact performance test device excited by impact, comprising: power Module, measurement module are provided, multiple spot impacts module, self-clamping module, thermal environment module, bullet recycling module and stage body module；
The thermal environment module is set in stage body module, for providing adjustable high temperature test environment；
The self-clamping module is set in thermal environment module, for gripping blade test specimen to be measured；
The multiple spot impact module is set in stage body module, for emit more bullets to impact leaf from different perspectives simultaneously Piece test specimen；
The power provides module and is used to provide power transmitting bullet to multiple spot impact module；
The bullet recycling module is placed in thermal environment module and is located at self-clamping module rear for recycling bullet；
The measurement module is for measuring magnitude of vibrations, shot orbit, impact force and noise.
In multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention, the multiple spot impact Module includes: adjustable gun tube mechanism, flowmeter, inner valve mechanism, gun barrel, pressure gauge and gun barrel support；
The gun barrel support is fixed in stage body module, and gun barrel is fixed on gun barrel support, gun barrel tail portion upper end be equipped with into Port unloads port and pressure gauge, and air inlet unloads that port passes through hose and power provides module and is tightly connected, flowmeter installation In gun barrel head upper end；
The adjustable gun tube mechanism is mounted on gun barrel front end, including multiple gun tubes, gun tube mounting base, is fixed on gun tube installation Support column, multiple angular adjustment modules and multiple gas circuit adjustment modules on seat；The multiple gun tube pass through respectively revolute pair with The connection of gun tube mounting base, and the two gas circuit communicates；Gun tube tail portion is equipped with bullet filler, and laser aiming instrument, gun tube is arranged in head Front end is connect by angular adjustment module with the support column being arranged at multiple gun tube centers；The gun tube mounting base is equipped with multiple Mounting groove includes the rotary chute pair being arranged in mounting groove, song for accommodating gas circuit adjustment module, the gas circuit adjustment module The logical regulating switch closing adjusting slider and being arranged in outside mounting groove of bar, connecting rod, gas circuit, mounting groove is stretched out in rotary chute pair one end It is connect with regulating switch, the rotary chute pair other end passes sequentially through the logical adjusting slider that closes of curved bar, connecting rod and gas circuit and connects, the peace The port being connected to corresponding gun tube is offered in tankage, can indirectly control that gas circuit is logical to close adjusting slider edge by stirring regulating switch Mounting groove slides and then closes or opens corresponding port to control whether corresponding gun tube uses；
The inner valve mechanism is arranged inside gun barrel front end, including two round valve blocks, and each circle valve block is equipped with Multiple ventholes, round valve block are mounted in the annular groove of gun barrel inner wall, change the venthole of the two by rotating round valve block Registration to control gas circuit opening and closing.
In multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention, the angular adjustment Module includes: that gun tube adjusts sliding rail, connection pedestal, internal screw thread hole post, external thread column and gun tube adjusting slider；The gun tube is adjusted Sliding rail is fixed on gun tube front end, and gun tube adjusting slider adjusts sliding rail cooperation sliding with gun tube and the other end and external thread column are affixed, External thread column and internal screw thread hole post cooperate, and internal thread hole column bottom is fixed by revolute pair with pedestal connection, connection pedestal is connect On the support columns, the adjusting of each gun tube impact direction can be realized by rotating female screw hole post.
In multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention, the thermal environment mould Block includes: hot tank, multiple heating tubes on hot tank inner wall and sensor feedback circuit；The top of the hot tank passes through heat-insulated Upper box lid closing, hot tank front side offer bullet entrance port, heat-resisting light transmission mantle are covered at bullet entrance port, box bilateral wall is set There is heat resistant glass observation window, hot tank bottom surface is funnel-form inclined-plane, and bottom center, which is equipped with, to be open and be connected to recovery channel, opening Equipped with electromagnetism after electric control door.
In multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention, the self-clamping module It is equipped with the vibration plummer of through-hole including center, multiple fixture bases are uniformly arranged around through-hole, the fixture base passes through Vibrating spring set on quadrangle is connect with vibration plummer, and the fixture base is equipped with the fixture for fixed blade test specimen Body, vibration plummer be equipped with four conductive bars, conductive bar from the through-hole on hot tank rear wall be pierced by afterwards be set to hot tank after tune Plate connection, affixed two positioning sliding blocks in the bottom surface of adjustable plate are saved, positioning sliding block cooperates with the positioning guide rail in stage body module, positioning Sliding block can be fixed different location on positioning guide rail, and then adjust the blade test specimen experiment distance different from light-gas gun.
In multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention, the bullet recycling Module includes support plate, baffle-box and the fine sand being set in baffle-box, and the support plate, which is fixed in hot tank, is located at clamping mould Block rear, the baffle-box is fixed on the supporting plate, opens up bullet receiving port on front side of baffle-box and is covered with heat-resisting mantle, baffle-box Upside is provided with the husky mouth of dress, and downside is provided with sand discharge door and controls its opening and closing with electromagnetic relay, and the support plate quadrangle is equipped with through-hole It is pierced by for conductive bar.
In multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention, the power is provided Module is movable integrated high pressure gas cylinder, is connected by hose air inlet corresponding with light-gas gun cylinder, to provide compressed gas.
In multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention, the measurement module It include: to be located at the high speed camera above hot tank, the laser vibration measurer above gun barrel and be set on the forward and backward outer wall of hot tank Noise transducer.
In multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention, the noise sensing Device is arranged in spacer and is fixed on the forward and backward outer wall of hot tank by spacer, and hot tank is inside the tank wall against noise transducer It is provided with sliding slot, is equipped with sliding block in sliding slot.
In multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention, the vibration measurement with laser Instrument is mounted on curved support frame by support slipper, and the curved support frame is mounted on above gun barrel, and support slipper can be along arc Arc track sliding on shape support frame, and then realize the arcuate movement of laser vibration measurer.
A kind of multiple spot of the invention lower multiple material blade thermal environment impact performance test device excited by impact realizes more simultaneously Point is excited by impact more realistically to simulate in composite material blade real work multiple spot with thermal excitation simultaneously by the feelings impacted Shape provides more true and reliable experimental data to impact experiment.
Detailed description of the invention
Fig. 1 is the overall structure of kind multiple spot of the invention lower multiple material blade thermal environment impact performance test device excited by impact Figure；
Fig. 2 is the structure chart that multiple spot impacts module；
Fig. 3 is adjustable gun tube mechanism structure figure；
Fig. 4 is angular adjustment function structure chart；
Fig. 5 is gas circuit adjustment module overall diagram；
Fig. 6 is single gas circuit adjustment module structure chart；
Fig. 7 is inner valve mechanism structure figure；
Fig. 8 is self-clamping module structure chart；
Fig. 9 is hot tank internal structure chart；
Figure 10 is high-speed camera structure chart above hot tank；
Figure 11 is laser vibration measurer structure chart above inflator；
Figure 12 is hot tank flanking noise sensor detail view I；
Figure 13 is hot tank flanking noise sensor detail view II；
In figure: 1 multiple spot impacts module；2 stage body modules；3 bullet recycling modules；4 self-clamping modules；5 thermal environment modules；6 survey Measure module；7 adjustable gun tube mechanisms；8 flowmeters；9 inner valve mechanisms；10 gun barrels；11 air inlets；12 pressure gauges；13 unload port；14 Gun barrel support；15 bullet fillers；16 regulating switches；17 gun tube mounting bases；18 gun tubes；19 laser aiming instruments；20 gun tubes are adjusted Sliding rail；21 middle support columns；22 connection pedestals；23 internal screw thread hole posts；24 external thread columns；25 gun tube adjusting sliders；26 rotations are slided Slot pair；27 curved bars；28 connecting rods；29 ports；30 gas circuits are logical to close adjusting slider；31 first round valve blocks；32 second round valve blocks；33 Adjustable plate；34 positioning sliding blocks；35 conductive bars；36 vibrating springs；37 clamp bodies；38 fixture bases；39 vibration plummers；40 positioning Guide rail；41 baffle-boxs；42 case lids；43 support plates；44 heating tubes；45 hot tanks；46 bullet entrance ports；47 observation windows；48 electromagnetism after Electric control door；49 recovery channels；50 first support frames；51 vertical guide rails；52 cross sliders；53 high-speed cameras；54 cross rails；55 is vertical Sliding block；56 curved support framves；57 support slippers；58 laser vibration measurers；59 noise transducers；60 spacers；61 sliding slots；62 sliding blocks.
Specific embodiment
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of multiple spot of the invention lower multiple material blade thermal environment impact performance test device excited by impact, packet Include: power provides module, measurement module 6, and multiple spot impacts module 1, self-clamping module 4, thermal environment module 5,3 He of bullet recycling module Stage body module 2.
The thermal environment module 5 is set in stage body module 2, for providing adjustable high temperature test environment.The clamping Module 4 is set in thermal environment module 5, for gripping blade test specimen to be measured.The multiple spot impact module 1 is set to stage body In module 2, for emit more bullets to impact blade test specimen from different perspectives simultaneously.It is packaged type that the power, which provides module, Integrated high-pressure gas cylinder is connected by hose air inlet corresponding with light-gas gun cylinder, provides compressed gas, and then impact mould to multiple spot Block 1 provides power and emits bullet.The bullet recycling module 3 is placed in thermal environment module 5 and is located at 4 rear of self-clamping module and is used for Recycle bullet.The measurement module 6 is for measuring magnitude of vibrations, shot orbit, impact force and noise.
As shown in Fig. 2, multiple spot impact module 1 include: adjustable gun tube mechanism 7, flowmeter 8, inner valve mechanism 9, gun barrel 10, Pressure gauge 12 and gun barrel support 14.The gun barrel support 14 is fixed in stage body module 2, and gun barrel 10 is fixed on gun barrel support 14 On, the tail portion upper end of gun barrel 10 is equipped with air inlet 11, unloads port 13 and pressure gauge 12, and air inlet 11 unloads port 13 by soft Pipe provides module with power and is tightly connected realization gas compression transmission, and flowmeter 8 is mounted on 10 head upper end of gun barrel.
As shown in figure 3, adjustable gun tube mechanism 7 is mounted on 10 front end of gun barrel, including multiple gun tubes 18, gun tube mounting base 17, Support column 21, multiple angular adjustment modules and the multiple gas circuit adjustment modules being fixed in gun tube mounting base 17.The multiple big gun Pipe 18 is connect by revolute pair with gun tube mounting base 17 respectively, and the two gas circuit communicates；It is loaded equipped with bullet the tail portion of gun tube 18 Mouth 15 realizes bullet filling.Laser aiming instrument 19 is arranged in 18 head of gun tube, to be pre-positioned bullet impact position.Before gun tube 18 End is connect by angular adjustment module with the support column 21 being arranged at multiple 18 centers of gun tube.
As shown in figure 4, the angular adjustment module includes: that gun tube adjusts sliding rail 20, connection pedestal 22, internal screw thread hole post 23, external thread column 24 and gun tube adjusting slider 25.The gun tube adjusts sliding rail 20 and is fixed on 18 front end of gun tube, gun tube adjusting slider 25 with gun tube adjust sliding rail 20 cooperation sliding and the other end and external thread column 24 it is affixed, external thread column 24 is matched with internal screw thread hole post 23 It closes, 23 bottom of internal screw thread hole post is connected by revolute pair with pedestal 22 is connect, and connection pedestal 22 is fixed on support column 21, is passed through The adjusting of each gun tube impact direction can be realized in rotating female screw hole post 23.
As shown in Figure 5 and Figure 6, gun tube mounting base 17 is equipped with multiple mounting grooves for accommodating gas circuit adjustment module, the gas Road adjustment module includes the rotary chute pair 26 being arranged in mounting groove, curved bar 27, connecting rod 28, gas circuit is logical closes 30 and of adjusting slider Regulating switch 16 outside mounting groove is set, and 26 one end of rotary chute pair are stretched out mounting groove and connect with regulating switch 16, rotate Sliding slot 26 other ends of pair pass sequentially through curved bar 27, connecting rod 28 and gas circuit lead to and close adjusting slider 30 and connect, and open up in the mounting groove There is the port 29 being connected to corresponding gun tube 18, can indirectly control that gas circuit is logical to close adjusting slider by stirring corresponding regulating switch 16 30 slide along mounting groove and then close or open corresponding port 29 to control whether corresponding gun tube uses.
As shown in fig. 7, the inner valve mechanism 9 is arranged inside 10 front end of gun barrel, the circle being close together including two Shape valve block, wherein the first round valve block 31 and the second round valve block 32 are equipped with multiple ventholes, the first round valve block 31 and the Two round valve blocks 32 are mounted in the annular groove of gun barrel inner wall, the registration for changing the venthole of the two by rotating round valve block To control gas circuit opening and closing.
As shown in figure 9, the thermal environment module 5 includes: hot tank 45,44 and of multiple heating tubes on 45 inner wall of hot tank Sensor feedback circuit realizes the control of the temperature inside the box by cabinet wall heating tube 44 and outer sensor feed circuit.Institute The top for stating hot tank 45 is closed by heat-insulated upper box lid 42, and the front side of hot tank 45 offers bullet entrance port 46, bullet entrance port It is covered with heat-resisting light transmission mantle at 46, guarantees that infrared sighting instrument 19 reduces bullet to blade test specimen shock point while being properly positioned Heat exchanges inside and outside ball incidence rear hot box 45.Box bilateral wall is equipped with heat resistant glass observation window 47, for correlation test recorder Device carries out test data sheet.Hot tank bottom surface is funnel-form inclined-plane, and bottom center, which is equipped with, to be open and be connected to recovery channel 49, opening Equipped with electromagnetism after electric control door 48.
As shown in figure 8, the self-clamping module 4 includes the vibration plummer 39 that center is equipped with through-hole, around through-hole uniformly Multiple fixture bases 38 are set, the fixture base 38 is connect by being set to the vibrating spring 36 of quadrangle with vibration plummer 38, The fixture base 38 is equipped with the clamp body 37 for fixed blade test specimen, and vibration plummer 38 is equipped with four conductive bars 35, conductive bar 35 is pierced by from the through-hole on 45 rear wall of hot tank and connect afterwards with the adjustable plate 33 after hot tank, the bottom of adjustable plate 33 Affixed two positioning sliding blocks 34 in face, the positioning guide rail 40 in positioning sliding block 34 and stage body module 2 cooperate, and positioning sliding block 34 can be Different location is fixed on positioning guide rail 40, and then adjusts the blade test specimen experiment distance different from light-gas gun, can be pressed from both sides by changing Particular number realizes the test under blade test specimen various boundary.
As shown in figure 9, the bullet recycling module 3 includes support plate 43, baffle-box 41 and is set in baffle-box 41 Fine sand, the support plate 43 are fixed on the rear for being located at self-clamping module 4 in hot tank 45, and the baffle-box 41 is fixed on support plate 43 On, bullet receiving port is opened up on front side of baffle-box 41 and is covered with heat-resisting mantle, and the husky mouth of dress is provided on the upside of baffle-box 41, to fill out sand, Downside is provided with sand discharge door and controls its opening and closing with electromagnetic relay.43 4 jiaos of the support plate are equipped with through-hole and wear for conductive bar 35 Out.Bullet breakdown blade test specimen and mantle enter baffle-box 41, realize buffering, pass through 45 bottom of hot tank again after the discharge of sand discharge door Funnel-form inclined-plane is slipped to electromagnetism at electric control door 48, and control electromagnetism enters recovery channel 49 after the opening of electric control door 48. The flexing in the shape of a spiral of recovery channel 49, is fixed in the internal cavities of stage body module 2,49 face hot tank suitable for reading bottom of recovery channel is normal Electromagnetism is closed after electric control door 48, lower mouth reaches cavity floor, and cavity floor is inclined-plane, and 2 side of guide table module opening is realized The recycling and reusing of bullet and fine sand.
The measurement module 6 includes three independent parts: high speed camera positioned at hot tank 45 above, on gun barrel 10 The laser vibration measurer of side and the noise transducer being set on the forward and backward outer wall of hot tank.
High-speed camera part is as shown in Figure 10.The part is located at right above hot tank 45, mainly by the first support frame 50, vertical Guide rail 51, high-speed camera 53, cross rail 54, vertical sliding block 55, cross slider 52 form, and it is flat at one that high-speed camera may be implemented Moving freely to be imaged to blade in face.
Laser vibration measurer part is as shown in figure 11.The part is located at right above gun barrel 10, mainly by curved support frame 56, branch Support sliding block 57, laser vibration measurer 58 forms.Support slipper 57 can arcuately on support frame 56 arc track sliding, and then realize Arcuately track is mobile for laser vibration measurer 58.
Noise transducer part is as shown in Figure 12,13.The part is located at the forward and backward outer wall of hot tank, mainly by noise transducer 59, spacer 60, sliding slot 61, sliding block 62 form.There are four noise transducers 59 for each fixation in former and later two faces of hot tank, because noise passes Sensor cannot be placed in thermal environment, thus be placed on hot tank outer wall by spacer 60, and hot tank is in the case against noise transducer Pars intramuralis is provided with sliding slot 61, and sliding block 62 is set in sliding slot.When on bullet impact to test specimen, in former and later two wall upper hopper chutes The movement of 62 moment of sliding block makes noise transducer 59 start to receive noise signal, after noise transducer has detected acoustic information, sliding block 62 move again, and notch is closed, and by this way, acoustic information when can measure bullet impact test specimen, and pass through front and back Noise transducer can measure the energy that sound is propagated in hot tank and lost.
The mistake tested using multiple spot lower multiple material blade thermal environment impact performance test device excited by impact of the invention Journey is as follows:
Step 1: after correctly assembling each experimental provision, choosing blade test specimen impact position and boundary condition, pass through clamp body Blade test specimen is fixed on vibration plummer；
Step 2: connection light-gas gun and gas source；Choose whether starting heater temperature control；By high-speed camera, vibration measurement with laser Instrument, which moves to, specifies place to be measured, adjusts laser vibration measurer posture, captures the vibration in pilot blade surface normal direction.Noise passes Notch guarantees closed state at sensor.Other preparations are carried out simultaneously；
Step 3: the adjusting of bullet filling and launch angle, specific situation are as follows:
When 3.1 single-points impact, one in gun tube 18 is selected, opens corresponding gas circuit, rotation using corresponding regulating switch 16 Internal screw thread hole post 23 in angular adjustment module cooperates infrared laser pointing instrumentation, gun tube is made to be in preset launch angle.
When 3.2 multiple spots impact, several in gun tube 18 are selected, open corresponding gas circuit, rotation using corresponding regulating switch 16 Each corresponding internal screw thread hole post 23 in gyration adjustment module cooperates infrared laser pointing instrumentation, is in each gun tube Preset launch angle.
Step 4: realizing pellet injection by controlling round valve block 31 and 32, and start the record of experimental data.Specifically Recording process is as follows:
With the force sensor measuring impact force at contact in bullet, to study impedance；With high-speed camera observation blade Displacement and failure mode；With the displacement or speed of laser vibration measurer measurement blade, output time-domain response, and then available frequency Function is rung to analyze the system parameters such as each rank intrinsic frequency of blade and damping ratio；Noise transducer can measure bullet impact test specimen When acoustic information, and sound can be measured by the noise transducer of front and back and propagate the energy lost in hot tank.
Step 5:
After 5.1 experimental records, control system successively opens the electromagnetism at sandbox and hot tank bottom after electric switch, makes to enter sandbox Bullet enter recovery channel together with fine sand.
5.2 enter the bottom bevel effect in experimental bench of the fine sand comprising bullet of bottom in experimental bench by recovery channel Under flow to experimental bench side opening, into the external container got ready in advance, realize the recycling of bullet and fine sand.
Step 6: closing each experimental facilities, analyze experimental data.
The foregoing is merely presently preferred embodiments of the present invention, the thought being not intended to limit the invention, all of the invention Within spirit and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of multiple spot lower multiple material blade thermal environment impact performance test device excited by impact characterized by comprising power mentions For module, measurement module, multiple spot impacts module, self-clamping module, thermal environment module, bullet recycling module and stage body module；
The thermal environment module is set in stage body module, for providing adjustable high temperature test environment；
The self-clamping module is set in thermal environment module, for gripping blade test specimen to be measured；
The multiple spot impact module is set in stage body module, impacts blade examination from different perspectives for emitting more bullets simultaneously Part；
The power provides module and is used to provide power transmitting bullet to multiple spot impact module；
The bullet recycling module is placed in thermal environment module and is located at self-clamping module rear for recycling bullet；
The measurement module is for measuring magnitude of vibrations, shot orbit, impact force and noise.
2. multiple spot lower multiple material blade thermal environment impact performance test device excited by impact as described in claim 1, feature exist In the multiple spot impact module includes: adjustable gun tube mechanism, flowmeter, inner valve mechanism, gun barrel, pressure gauge and gun barrel support；
The gun barrel support is fixed in stage body module, and gun barrel is fixed on gun barrel support, gun barrel tail portion upper end be equipped with air inlet, Unload port and pressure gauge, air inlet unloads that port passes through hose and power provides module and is tightly connected, and flowmeter is mounted on gun barrel Head upper end；
The adjustable gun tube mechanism is mounted on gun barrel front end, including multiple gun tubes, gun tube mounting base, is fixed in gun tube mounting base Support column, multiple angular adjustment modules and multiple gas circuit adjustment modules；The multiple gun tube passes through revolute pair and gun tube respectively Mounting base connection, and the two gas circuit communicates；Gun tube tail portion is equipped with bullet filler, and laser aiming instrument, gun tube front end is arranged in head It is connect by angular adjustment module with the support column being arranged at multiple gun tube centers；The gun tube mounting base is equipped with multiple installations For slot for accommodating gas circuit adjustment module, the gas circuit adjustment module includes the rotary chute pair being arranged in mounting groove, curved bar, company The logical regulating switch closing adjusting slider and being arranged in outside mounting groove of bar, gas circuit, rotary chute pair one end are stretched out mounting groove and are adjusted Section switch connection, the rotary chute pair other end pass sequentially through the logical adjusting slider that closes of curved bar, connecting rod and gas circuit and connect, the mounting groove The port being connected to corresponding gun tube is inside offered, the logical adjusting slider that closes of gas circuit can be indirectly controlled along installation by stirring regulating switch Slot slides and then closes or opens corresponding port to control whether corresponding gun tube uses；
The inner valve mechanism is arranged inside gun barrel front end, including two round valve blocks, and each circle valve block is equipped with multiple Venthole, round valve block are mounted in the annular groove of gun barrel inner wall, the weight for changing the venthole of the two by rotating round valve block It is right to be opened and closed to control gas circuit.
3. multiple spot lower multiple material blade thermal environment impact performance test device excited by impact as claimed in claim 2, feature exist In the angular adjustment module includes: that gun tube adjusts sliding rail, connection pedestal, internal screw thread hole post, external thread column and gun tube adjusting cunning Block；The gun tube adjusts sliding rail and is fixed on gun tube front end, and gun tube adjusting slider and gun tube adjust sliding rail cooperation sliding and the other end Affixed with external thread column, external thread column and internal screw thread hole post cooperate, and internal thread hole column bottom is connected by revolute pair with pedestal is connect It connects, connection pedestal is fixed on the support columns, and the adjusting of each gun tube impact direction can be realized by rotating female screw hole post.
4. multiple spot lower multiple material blade thermal environment impact performance test device excited by impact as described in claim 1, feature exist In the thermal environment module includes: hot tank, multiple heating tubes on hot tank inner wall and sensor feedback circuit；The heat The top of case is closed by heat-insulated upper box lid, offers bullet entrance port on front side of hot tank, heat-resisting light transmission is covered at bullet entrance port Mantle, box bilateral wall be equipped with heat resistant glass observation window, hot tank bottom surface be funnel-form inclined-plane, bottom center be equipped with opening and with return The connection of closed tube road, opening are equipped with electromagnetism after electric control door.
5. multiple spot lower multiple material blade thermal environment impact performance test device excited by impact as claimed in claim 4, feature exist In the self-clamping module includes the vibration plummer that center is equipped with through-hole, and multiple fixture bases, institute are uniformly arranged around through-hole It states fixture base and is connect by being set to the vibrating spring of quadrangle with vibration plummer, the fixture base is equipped with for fixing leaf The clamp body of piece test specimen, vibration plummer be equipped with four conductive bars, conductive bar from the through-hole on hot tank rear wall be pierced by after with set Adjustable plate connection after hot tank, affixed two positioning sliding blocks in the bottom surface of adjustable plate, positioning sliding block and the positioning in stage body module Guide rail cooperation, positioning sliding block can be fixed different location on positioning guide rail, and then it is different from light-gas gun to adjust blade test specimen Test distance.
6. multiple spot lower multiple material blade thermal environment impact performance test device excited by impact as claimed in claim 4, feature exist In the bullet recycling module includes support plate, baffle-box and the fine sand being set in baffle-box, and the support plate is fixed on heat It is located at self-clamping module rear in case, the baffle-box is fixed on the supporting plate, opens up bullet receiving port on front side of baffle-box and is covered with Heat-resisting mantle, baffle-box upside are provided with the husky mouth of dress, and downside is provided with sand discharge door and controls its opening and closing, the support with electromagnetic relay Plate quadrangle is equipped with through-hole and is pierced by for conductive bar.
7. multiple spot lower multiple material blade thermal environment impact performance test device excited by impact as described in claim 1, feature exist In, it is movable integrated high pressure gas cylinder that the power, which provides module, it is connected by hose air inlet corresponding with light-gas gun cylinder, To provide compressed gas.
8. multiple spot lower multiple material blade thermal environment impact performance test device excited by impact as described in claim 1, feature exist In the measurement module includes: the high speed camera above hot tank, the laser vibration measurer above gun barrel and is set to heat Noise transducer on the forward and backward outer wall of case.
9. multiple spot lower multiple material blade thermal environment impact performance test device excited by impact as claimed in claim 8, feature exist In the noise transducer is arranged in spacer and is fixed on the forward and backward outer wall of hot tank by spacer, and hot tank is passed against noise It is provided with sliding slot inside the tank wall of sensor, is equipped with sliding block in sliding slot.
10. multiple spot lower multiple material blade thermal environment impact performance test device excited by impact as claimed in claim 8, feature exist In, the laser vibration measurer is mounted on curved support frame by support slipper, and the curved support frame is mounted on above gun barrel, Support slipper can arcuately on support frame arc track sliding, and then realize the arcuate movement of laser vibration measurer.
CN201910771869.9A 2019-08-21 2019-08-21 Device for testing thermal environment impact performance of composite blade under multi-point impact excitation Active CN110455485B (en)

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CN110823724B (en) * 2019-11-21 2021-11-30 中国民航大学 Experimental device for observing impact damage of blade of aero-engine
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