CN104006942A - High-magnitude and strong impact test method - Google Patents
High-magnitude and strong impact test method Download PDFInfo
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- CN104006942A CN104006942A CN201410201078.XA CN201410201078A CN104006942A CN 104006942 A CN104006942 A CN 104006942A CN 201410201078 A CN201410201078 A CN 201410201078A CN 104006942 A CN104006942 A CN 104006942A
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Abstract
The invention discloses a high-magnitude and strong impact test method, and belongs to the technical field of aviation airborne electronic equipment. According to the test method, the situation that a fixed type protection recorder installed on an airplane bears high-magnitude and strong impact when the airplane crashes is simulated, a tested product produces strong impact when bearing the change of reducing of the speed, the large probability working condition of the protection recorder when the protection recorder bears the strong impact damage can be reflected well when the airplane crashes, and indoor implementation is achieved. According to the method, a high-pressure gas medium serves as a power source, high pressure is released instantly through the high-pressure gas, the tested product is pushed to accelerate until the standard speed is reached in a specific guiding device, a bullet support and the tested product are separated through a separating device of the bullet support and the tested product, the tested product independently collides with a load generating medium with the required speed, and the strong impact with the required load is produced. By means of the high-magnitude and strong impact test method, the verification problem of the strong impact with the magnitude with the half-sine wave of 6000 g/5-8 ms can be solved.
Description
Technical field
A kind of high magnitude high impact shock test of patent of the present invention method belongs to airborne technical field of electronic equipment.
Background technology
Along with aeroplane performance constantly improves, the aircraft of (flying speed is more than mach one) flight especially at a high speed, its airborne circumstance and failure mode are harsh more than current civil aircraft.Current, for the high impact shock test of airborne electronic equipment-fixed protection register, follow be in the world general ED ?testing requirements in 112 standards, that is: in process of the test, it is 33342m/s2 (3400g) that thump energy should be equal to or greater than peak accelerator, pulsewidth is the half-sine wave impact energy of 6.5ms, shock load actual waveform should at least can obtain the peak accelerator of 3400g, working time of collision is not less than 6.5ms, and this impact can stand that speed increases or the variation that reduces produces by making to protect register.At present, the high impact shock test method adopting according to this standard-required, generally to be subject to trial product to stand speed increase mode to produce thump (as Fig. 1 and Fig. 2), its mechanism is to adopt air bubble test method, utilize compressed-air actuated energy transmitting bullet, make it reach the speed of regulation, clash into the static trial product (protection register or the protection assembly that crashes) that is subject to, in order to realize the technical indicator of impulse test defined, need to be at bullet and be subject between trial product to arrange and there is the padded coaming of certain dynamic perfromance (what adopt at present is felt and compressed-air actuated unitized construction, hereinafter referred to as: waveform generation medium), make projectile impact be subject to the waveform generation medium before trial product to realize 3400g, 6.5ms half-sine wave high impact shock test index, be subject to trial product in accelerator, to complete thump (as Fig. 3).Because the method need to be transmitted by secondary: i.e. projectile impact padded coaming, waveform generation medium acts on and is subject in trial product, could produce shock load (Fig. 1) by the propagation of twice contact force, the transmission of energy need to be passed through twice contact, has certain loss.The testing equipment of setting up by the method, has changed multiple waveforms generating material (as felts, rubber-like, foam class, aluminium composite material etc.), but because its specific test method all can only reach the impact energy below 150m/s.Cannot realize high-energy thump requirement more than 6000g/5～8ms.
Based on above situation, carry out the research of high magnitude high impact shock test method.Realize the checking demand of anti-high-energy thump protection register.
Summary of the invention
The object of the invention: be the high impact shock test problem that solves the above value of protection register 6000g/5～8ms half-sine wave.
Technical scheme of the present invention: a kind of high magnitude high impact shock test method, mainly take following steps to complete:
1) set up thump power generation system
A) set up the air supply system that launch power is provided, mainly comprise air pressure station, gas cleaning unit, gas-holder, operation valve, pipeline etc., for the light gas that produces power is provided;
B) set up emitter, emitter comprises hyperbaric chamber, recoil mechanism, power valve device and obturating system, be subject to the power of test specimen from hyperbaric chamber gas, hyperbaric chamber gas is provided by high pressure compressor, in the time that the pressure in hyperbaric chamber reaches the definite value of technical indicator, passes through releasing mechanism, gases at high pressure abrupt release, effect is subject to test specimen, now, is subject to test specimen to be issued to the initial velocity of technical requirement in the promotion of gaseous tension;
C) set up and be subject to test specimen guide piece, formed by guide pipe and guiding governor motion by test specimen guide piece, guide pipe main body adopts gun-steel manufacture, and length and diameter are according to being subject to the interior maximum overload of velocity of discharge, thorax of test specimen and being subject to the physical dimension of test specimen to calculate acquisition;
D) set up bullet holder and the separating part device that is subject to trial product, in the exit position of guide pipe, bullet holder and the tripping device that is subject to trial product are set, guarantee is arrived after the speed needing by trial product, guarantee to be subject to trial product and separation of the projectile seat, and can not affect the shock initial velocity and the attitude that are subject to trial product in detachment process;
2) set up waveform generating system
A) set up load waveform generation medium cabin, load waveform generation medium cabin is for location and installation load generating material and necessary proving installation, and load generating material adopts honeycomb aluminum structured material as the medium that is knocked that is subject to trial product;
B) set up gas recovery capsule, the tail gas that gas recovery capsule produces for recovery test process, avoids gas leak;
It is characterized in that,
For the fixed protection register on aircraft, its high magnitude high impact shock test adopts the mode that reduced with speed by trial product to produce high magnitude thump;
The light gas that power is provided for providing adopts helium, hydrogen or air gases at high pressure as the high magnitude thump power source that is subject to trial product;
Adopt honeycomb aluminum structured material as the medium that is knocked that is subject to trial product, be subject to trial product with certain initial velocity
The honeycomb aluminum structured material that degree clashes into ad hoc structure produces thump.
Beneficial effect of the present invention: by the enforcement of this test method, not only expand thump magnitude examination scope, solved the bottleneck problem that improves protection register resisting strong impact, and filled up protection register the experimental technique blank of 6000g/5～8ms half-sine wave above value.
Brief description of the drawings
Fig. 1 is that speed increases mode thump schematic diagram;
Fig. 2 is that speed increases mode thump principle schematic;
Fig. 3 is that speed increases mode high impact shock test method construct schematic diagram;
Fig. 4 is that speed reduces mode thump schematic diagram;
Fig. 5 is that speed reduces mode thump principle schematic;
Fig. 6 is that speed reduces mode high impact shock test method construct schematic diagram.
Embodiment
The principle of the invention:
As shown in Figure 4,5, the high magnitude high impact shock test method that patent of the present invention is introduced, has adopted to make to protect register and stand the variation that speed reduces and produce thump.That is, be subject to trial product to accelerate in advance the initial velocity of regulation, clash into specific waveform generation medium with this speed, clashed in contact process by trial product and waveform generation medium and slow down and realize thump.
As shown in Figure 6, high magnitude high impact shock test method is mainly made up of power generation system and load waveform generating system, adopting gases at high pressure (as: helium, hydrogen or air) is power source, by gases at high pressure abrupt release high pressure, promotion is subject to test specimen to accelerate to (comprise bullet holder and be subject to trial product) speed of regulation in special guide piece, now, by bullet holder be subject to the tripping device of trial product by bullet holder and tested separation of products, be subject to trial product separately with fixing speed bump stroke generation medium, produce the thump of specified load.
Embodiment
As Fig. 6, high magnitude high impact shock test method is mainly made up of power generation system and load waveform generating system.
1. thump power generation system
It is mainly gunpowder and gases at high pressure that thump power source can be provided at present.Compare by analysis, its advantage of the relative gunpowder of gases at high pressure is control, easy to operate, and security is higher, is convenient to management, is not subject to place restriction and climatic influences, can be in indoor enforcement.Therefore, protection register high magnitude high impact shock test method adopts the test method that high pressure gas is power.Thump power generation system based on the method mainly by air supply system, radiating portion, be subject to test specimen targeting part and bullet holder and formed by the separating part of trial product.
Air supply system is to provide the device of launch power, comprises air pressure station, gas cleaning unit, gas-holder, operation valve, pipeline etc.Air pressure station provides pressure gas, and pressure gas can adopt helium, air or hydrogen.Pressure gas is injected in gas-holder, enters into radiating portion by operation valve.
Radiating portion comprises hyperbaric chamber, recoil mechanism, power valve device and obturating system.Be subject to the power of test specimen from hyperbaric chamber gas, hyperbaric chamber gas is provided by high pressure compressor, in the time that reaching certain value, the pressure in hyperbaric chamber (determines according to technical indicator), pass through releasing mechanism, gases at high pressure abrupt release, effect is subject to test specimen, now, is subject to test specimen to be issued to enough initial velocity (can calculate acquisition according to technical indicator) in the promotion of gaseous tension.
Be made up of guide pipe and the governor motion that leads by test specimen targeting part, guide pipe main body adopts gun-steel manufacture, and length and diameter are according to being subject to the interior maximum overload of velocity of discharge, thorax of test specimen and being subject to the physical dimension of test specimen to calculate acquisition.
The separating part of bullet holder and test specimen is arranged on the exit position of guide pipe, and its function is to ensure to be subject to trial product to arrive after the speed needing, and guarantees and separation of the projectile seat, and can not affect the shock initial velocity and the attitude that are subject to trial product in detachment process.
2. load waveform generating system
Load waveform generating system mainly comprises load waveform generation medium cabin and gas recovery capsule.Load waveform generation medium cabin is for location and installation load generating material and necessary proving installation.The material that load generation medium uses is honeycomb aluminum structured material.The tail gas that gas recovery capsule produces for recovery test process, avoids gas leak.
Claims (3)
1. a high magnitude high impact shock test method, comprises the following steps:
1) set up thump power generation system
A) set up the air supply system that launch power is provided, mainly comprise air pressure station, gas cleaning unit, gas-holder, operation valve, pipeline etc., for the light gas that produces power is provided;
B) set up emitter, emitter comprises hyperbaric chamber, recoil mechanism, power valve device and obturating system, be subject to the power of test specimen from hyperbaric chamber gas, hyperbaric chamber gas is provided by high pressure compressor, in the time that the pressure in hyperbaric chamber reaches the definite value of technical indicator, passes through releasing mechanism, gases at high pressure abrupt release, effect is subject to test specimen, now, is subject to test specimen to be issued to the initial velocity of technical requirement in the promotion of gaseous tension;
C) set up and be subject to test specimen guide piece, formed by guide pipe and guiding governor motion by test specimen guide piece, guide pipe main body adopts gun-steel manufacture, and length and diameter are according to being subject to the interior maximum overload of velocity of discharge, thorax of test specimen and being subject to the physical dimension of test specimen to calculate acquisition;
D) set up bullet holder and the separating part device that is subject to trial product, in the exit position of guide pipe, bullet holder and the tripping device that is subject to trial product are set, guarantee is arrived after the speed needing by trial product, guarantee to be subject to trial product and separation of the projectile seat, and can not affect the shock initial velocity and the attitude that are subject to trial product in detachment process;
2) set up waveform generating system
A) set up load waveform generation medium cabin, load waveform generation medium cabin is for location and installation load generating material and necessary proving installation;
B) set up gas recovery capsule, the tail gas that gas recovery capsule produces for recovery test process, avoids gas leak;
It is characterized in that, for the fixed protection register on aircraft, its high magnitude high impact shock test adopts the mode that reduced with speed by trial product to produce high magnitude thump.
2. a kind of high magnitude high impact shock test method as claimed in claim 1, is characterized in that, described in provide the light gas that produces power to adopt helium, hydrogen or air gases at high pressure as the high magnitude thump power source that is subject to trial product.
3. a kind of high magnitude high impact shock test method as claimed in claim 1 or 2, it is characterized in that, adopt honeycomb aluminum structured material as the medium that is knocked that is subject to trial product, be subject to the honeycomb aluminum structured material that trial product is clashed into ad hoc structure with certain initial velocity to produce thump.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614141A (en) * | 2015-01-30 | 2015-05-13 | 太原理工大学 | High-pressure pipe whipping device |
| CN106441772A (en) * | 2016-09-29 | 2017-02-22 | 四川海恩瑞捷测控技术有限公司 | Flight recorder impact test sabot separation device and separation method thereof |
| CN107421706A (en) * | 2017-06-13 | 2017-12-01 | 西安工业大学 | Target dynamic characteristic diversification test platform under strong impact environment |
| CN109855832A (en) * | 2019-01-30 | 2019-06-07 | 西安工业大学 | A kind of continuous acceleration system of movable body for high impact shock test and its working method |
| CN112798440A (en) * | 2020-12-28 | 2021-05-14 | 中南大学 | High-speed impact penetration resistance performance testing device and testing method for honeycomb structure |
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| CN103674463A (en) * | 2013-11-13 | 2014-03-26 | 南京航空航天大学 | Air cannon launch control system |
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| CN101458152A (en) * | 2008-11-27 | 2009-06-17 | 中北大学 | High g value impact acceleration simulation test system and method , test method and application |
| CN103017996A (en) * | 2012-12-10 | 2013-04-03 | 陕西千山航空电子有限责任公司 | High-magnitude strong-impact test method |
| CN103674463A (en) * | 2013-11-13 | 2014-03-26 | 南京航空航天大学 | Air cannon launch control system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104614141A (en) * | 2015-01-30 | 2015-05-13 | 太原理工大学 | High-pressure pipe whipping device |
| CN104614141B (en) * | 2015-01-30 | 2017-02-22 | 太原理工大学 | High-pressure pipe whipping device |
| CN106441772A (en) * | 2016-09-29 | 2017-02-22 | 四川海恩瑞捷测控技术有限公司 | Flight recorder impact test sabot separation device and separation method thereof |
| CN107421706A (en) * | 2017-06-13 | 2017-12-01 | 西安工业大学 | Target dynamic characteristic diversification test platform under strong impact environment |
| CN107421706B (en) * | 2017-06-13 | 2023-03-28 | 西安工业大学 | Diversified test platform for dynamic characteristics of target in strong impact environment |
| CN109855832A (en) * | 2019-01-30 | 2019-06-07 | 西安工业大学 | A kind of continuous acceleration system of movable body for high impact shock test and its working method |
| CN109855832B (en) * | 2019-01-30 | 2023-09-05 | 西安工业大学 | Moving body continuous acceleration system for strong impact test and working method thereof |
| CN112798440A (en) * | 2020-12-28 | 2021-05-14 | 中南大学 | High-speed impact penetration resistance performance testing device and testing method for honeycomb structure |
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