CN108387463A - The high overload loading device of load lower structure vibration is transmitted based on stress wave - Google Patents
The high overload loading device of load lower structure vibration is transmitted based on stress wave Download PDFInfo
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- CN108387463A CN108387463A CN201810091328.7A CN201810091328A CN108387463A CN 108387463 A CN108387463 A CN 108387463A CN 201810091328 A CN201810091328 A CN 201810091328A CN 108387463 A CN108387463 A CN 108387463A
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- 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
- G01N3/313—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by explosives
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Abstract
The invention discloses a kind of high overload loading devices transmiting load lower structure vibration based on stress wave, include the pedestal of a upper hollow, concussion body is fixedly connected with by the first fixing mechanism above pedestal, device under test is fixedly connected with by the second fixing mechanism below earthquake body, there is load source in the external side of earthquake.The present invention can adjust the intensity of incident stress wave by changing the rate of loading in load source, change the intensity into the transmission stress wave of device under test, so as to adjust the overload level of device under test.
Description
Technical field
The present invention relates to a kind of high overload loading devices, and in particular to one kind is based on stress wave transmission load lower structure vibration
High overload loading device.
Background technology
With the extensive use of the penetrations class weapon such as earth-drilling bomb, to critical components such as body inside fuse, priming system, powder charges
Anti-overloading performance propose higher requirement, if above-mentioned component is deformed in Penetration, is damaged so as to cause work(
It can fail, it is possible to lead to the failure of entire weapon system.Therefore, critical component anti-overloading performance is to determine weapon system effect
The key point of success or failure.
Currently, common high overload loading technique has 82mm cannons, 85mm cannons, 156mm cannons, Balance Gun and rocket
The field trials technologies such as sled, these experimental techniques common problems such as long, of high cost there are the period, therefore, it is difficult to widely apply.
Hopkinson bars, Machete such as hammer, drop hammer at the simulation loadings technology, although test period and cost can decline to a great extent,
There is a problem of that duration of overload is shorter or peak accelerator is relatively low, function and effect and true penetration environment there is also
Certain gap.Inventor also it is proposed that a kind of high explosive effect under the high overload loading technique based on stress wave multiple reflections, but
It is there are complicated, and acceleration is decayed very fast disadvantage.
Therefore develop that a kind of cost is relatively low, the period is shorter and comprehensive function effect can be close with true penetration environment
Novel high overload technology, there is important future in engineering applications.
Invention content
In order to promote the research and development ability of anti high overload product, the present invention provides one kind based on the lower knot of stress wave transmission load
The high overload loading device of structure vibration.
The technical solution adopted by the present invention to solve the technical problems is：
The high overload loading device that load lower structure vibration is transmitted based on stress wave, includes the pedestal of a upper hollow,
Concussion body is fixedly connected with by the first fixing mechanism above pedestal, is fixedly connected by the second fixing mechanism below earthquake body
There is device under test.There is load source in the external side of earthquake.
Further scheme is：
The concussion body is cylinder, cuboid or girder construction.
Further scheme is：
The load source is high speed, high pressure detonation product or the film flying of high-speed flight that explosive detonation generates.
Further scheme is：
The concussion body is the cylinder of diameter 100mm, thickness 20mm, and material is 7075 aluminium alloys.
Further scheme is：
The submount material is stainless steel.
Further scheme is：
First fixing mechanism and the second fixing mechanism are the stud of circumferential arrangement.
Further scheme is：
The flyer velocity of the high-speed flight is 50m/s.
Further scheme is：
The device under test is diameter 12mm, and the cylinder of thickness 3mm, material is titanium alloy.
The present invention action principle be：When load source (detonation products or High Speed Flyer) collision effect is in concussion
Body generates compression stress wave in earthquake body, when compression stress wave travels to the second fixing mechanism position, passes through second and is connected knot
Structure or contact interface are transmitted into device under test, induce the high-frequency vibration of device under test, are generated inside it in vibration processes
Complicated stress wave propagation and high strain-rate load, form the overload environment similar to Penetration.
The invention has the advantages that the present invention can pass through the rate of loading (speed of such as High Speed Flyer in change load source
Degree and flier plate material etc.) the incident stress wave of adjustment intensity, change the intensity into the transmission stress wave of device under test, to adjust
The overload level of whole device under test.Mainly there is following advantage：
1) at low cost：Since the common material such as stainless steel, aluminium may be used in the technology all material, cost can be down to
Thousands of members are laid a good foundation for a large amount of reuses；
2) test period is short：It can will foreshorten to hour grade the test period；
3) it takes up little area：Can be exploded the development of tower inside indoors；
4) recycling is simple：Device under test after experiment is still within origin-location, therefore need not spend human and material resources and repair
Build retracting device；
5) safe：Experiment is carried out inside explosion tower, can ensure the safety of testing crew, and accident will not occur
Injures and deaths.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is that film flying of the embodiment of the present invention hits concussion body calculating gained acceleration-time graph.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Fig. 1, the high overload loading device of load lower structure vibration, including a pedestal are transmitted based on stress wave
1, there are one hollow structures 7,1 top of pedestal to be fixedly connected with concussion body 2, earthquake body by the first fixing mechanism 4 on pedestal 1
2 lower sections are fixedly connected with device under test 6 by the second fixing mechanism 5, and device under test 6 is located in hollow structure 7.Earthquake is external
There is load source 3 in side.
As an embodiment of the present invention, load source can be loaded with explosive detonation or High Speed Flyer is hit, this implementation
Example uses High Speed Flyer, and speed 50m/s, for concussion body using the cylinder of diameter 100mm, thickness 20mm, material is 7075 aluminium
Alloy；Submount material uses stainless steel, the first fixing mechanism that concussion body and pedestal are connected in one using the stud of circumferential arrangement
It rises；Device under test is diameter 12mm, and the cylinder of thickness 3mm, material is titanium alloy, by the second fixing mechanism and is fixed on shake
The body back side is swung, the second fixing mechanism is equally using the stud of circumferential arrangement.
In assembling process, it is connected with pedestal to ensure to shake body, should ensure that the first fixing mechanism (stud) is tightened, together
Reason, should ensure that the second fixing mechanism (stud) is tightened.
By method of numerical simulation, the validity of above-mentioned experimental provision is studied, mathematical calculation model and
The acceleration rule that changes with time is as shown in Fig. 2 in device under test, as can be seen that the peak that the present invention obtains from attached drawing 2
Value acceleration has been more than the peak accelerator in Penetration and the duration has reached ms magnitudes, and being one kind having certain application
The high overload loading technique of foreground.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other modification and implementations, these modifications and implementations will be fallen in principle disclosed in the present application
Within scope and spirit.
Claims (8)
1. a kind of high overload loading device transmiting load lower structure vibration based on stress wave, it is characterised in that：Including on one
The hollow pedestal in portion, pedestal top are fixedly connected with concussion body by the first fixing mechanism, consolidate by second below earthquake body
Connection structure is fixedly connected with device under test, and there is load source in the external side of earthquake.
2. transmiting the high overload loading device of load lower structure vibration based on stress wave according to claim 1, feature exists
In：
The concussion body is cylinder, cuboid or girder construction.
3. transmiting the high overload loading device of load lower structure vibration based on stress wave according to claim 2, feature exists
In：
The concussion body is the cylinder of diameter 100mm, thickness 20mm, and material is 7075 aluminium alloys.
4. transmiting the high overload loading device of load lower structure vibration based on stress wave according to claim 1, feature exists
In：
The load source is high speed, high pressure detonation product or the film flying of high-speed flight that explosive detonation generates.
5. transmiting the high overload loading device of load lower structure vibration based on stress wave according to claim 1, feature exists
In：
The submount material is stainless steel.
6. transmiting the high overload loading device of load lower structure vibration based on stress wave according to claim 1, feature exists
In：
First fixing mechanism and the second fixing mechanism are the stud of circumferential arrangement.
7. transmiting the high overload loading device of load lower structure vibration based on stress wave according to claim 1, feature exists
In：
The flyer velocity of the high-speed flight is 50m/s.
8. transmiting the high overload loading device of load lower structure vibration based on stress wave according to claim 1, feature exists
In：
The device under test is diameter 12mm, and the cylinder of thickness 3mm, material is titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810091328.7A CN108387463B (en) | 2018-01-30 | 2018-01-30 | High overload loading device based on structural vibration under stress wave transmission loading |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810091328.7A CN108387463B (en) | 2018-01-30 | 2018-01-30 | High overload loading device based on structural vibration under stress wave transmission loading |
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| CN108387463A true CN108387463A (en) | 2018-08-10 |
| CN108387463B CN108387463B (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858048A (en) * | 2021-01-19 | 2021-05-28 | 昆明理工大学 | Dynamic mechanical property testing device for blast hole filler and using method thereof |
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| CN112858048B (en) * | 2021-01-19 | 2022-10-28 | 昆明理工大学 | Dynamic mechanical property testing device for blast hole filler and using method thereof |
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| CN108387463B (en) | 2020-10-16 |
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