CN108387463B - High overload loading device based on structural vibration under stress wave transmission loading - Google Patents
High overload loading device based on structural vibration under stress wave transmission loading Download PDFInfo
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- CN108387463B CN108387463B CN201810091328.7A CN201810091328A CN108387463B CN 108387463 B CN108387463 B CN 108387463B CN 201810091328 A CN201810091328 A CN 201810091328A CN 108387463 B CN108387463 B CN 108387463B
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- 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 high overload loading device based on structural vibration under stress wave transmission loading, which comprises a base with a hollow upper part, wherein an oscillating body is fixedly connected above the base through a first fixed connection structure, a device to be tested is fixedly connected below the oscillating body through a second fixed connection structure, and a loading source is arranged outside the oscillating body. The invention can adjust the intensity of the incident stress wave by changing the loading intensity of the loading source and change the intensity of the transmission stress wave entering the device to be tested, thereby adjusting the overload level of the device to be tested.
Description
Technical Field
The invention relates to a high overload loading device, in particular to a high overload loading device based on structural vibration under stress wave transmission loading.
Background
With the wide application of penetration weapons such as ground penetrating bombs and the like, high requirements are put forward on the overload resistance of key components such as fuzes, initiating explosive devices, charging and the like in the projectile body, and if the components deform and are damaged in the penetration process to cause functional failure, the failure of the whole weapon system can be possibly caused. Therefore, the overload resistance of the critical component is the key to determining the success or failure of the weapon system.
At present, the common high overload loading technologies comprise outfield test technologies such as 82mm artillery, 85mm artillery, 156mm artillery, balance artillery and rocket pry, and the test technologies have the common problems of long period, high cost and the like, so that the high overload loading technologies are difficult to apply in large quantities. Although the test period and the cost can be greatly reduced by adopting the simulation loading technologies such as a Hopkinson rod, Marshall hammering, drop hammer and the like, the problems of short overload duration time or low peak acceleration exist, and the action effect of the simulation loading technology is different from the real penetration environment. The inventor also proposes a high overload loading technology based on multiple reflections of stress waves under the action of high explosive, but the technology has the disadvantages of complicated structure and rapid acceleration decay.
Therefore, a novel high overload technology which is low in cost, short in period and capable of achieving a comprehensive effect close to that of a real penetration environment is developed, and the method has an important engineering application prospect.
Disclosure of Invention
In order to improve the research and development capability of high overload resistant products, the invention provides a high overload loading device based on structural vibration under stress wave transmission loading.
The technical scheme adopted by the invention for solving the technical problems is as follows:
high overload loading device based on structural vibration under stress wave transmission loading, including a hollow base in upper portion, vibrate the body through first fixedly connected with that links firmly in the base top, link firmly the device under test through the second below vibrating the body. And a loading source is arranged outside the oscillator.
The further scheme is as follows:
the oscillating body is of a cylinder, a cuboid or a beam structure.
The further scheme is as follows:
the loading source is a high-speed and high-pressure detonation product generated by detonation of the explosive or a flying sheet flying at a high speed.
The further scheme is as follows:
the oscillator is a cylinder with the diameter of 100mm and the thickness of 20mm, and is made of 7075 aluminum alloy.
The further scheme is as follows:
the base is made of stainless steel.
The further scheme is as follows:
the first fixed connection structure and the second fixed connection structure are studs arranged annularly.
The further scheme is as follows:
the flying piece flying at high speed is 50 m/s.
The further scheme is as follows:
the device to be tested is a cylinder with the diameter of 12mm and the thickness of 3mm, and the material is titanium alloy.
The invention has the following action principle: when a loading source (explosive detonation product or high-speed flying piece) collides and acts on the oscillator, a compression stress wave is generated in the oscillator, and the compression stress wave is transmitted to the second fixed connection structure and enters the device to be tested through the second fixed connection structure or the contact interface to induce the high-frequency vibration of the device to be tested, and complex stress wave propagation and high strain rate loading are generated in the device to be tested in the vibration process, so that an overload environment similar to the penetration process is formed.
The invention has the advantages that the invention can adjust the intensity of the incident stress wave by changing the loading intensity of the loading source (such as the speed of a high-speed flyer, a flyer material and the like), and change the intensity of the transmission stress wave entering the device to be tested, thereby adjusting the overload level of the device to be tested. The method mainly has the following advantages:
1) the cost is low: all materials in the technology can be common materials such as stainless steel, aluminum and the like, so that the cost can be reduced to thousands of yuan, and a foundation is laid for repeated use;
2) the test period is short: the test period can be shortened to a small level;
3) the occupied area is small: the explosion-proof tower can be developed in an indoor explosion tower;
4) the recovery is simple: the tested device is still at the original position, so that manpower and material resources are not consumed to construct a recovery device;
5) the safety is high: the test is carried out in the explosion tower, so that the safety of the tester can be guaranteed, and accidental casualties cannot occur.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a calculated acceleration-time curve of the flyer impacting the oscillator according to the embodiment of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in the attached drawing 1, the high overload loading device based on the structural vibration under the stress wave transmission loading comprises a base 1, wherein a hollow structure 7 is arranged on the base 1, a vibrator 2 is fixedly connected to the upper part of the base 1 through a first fixedly connecting structure 4, a device to be tested 6 is fixedly connected to the lower part of the vibrator 2 through a second fixedly connecting structure 5, and the device to be tested 6 is positioned in the hollow structure 7. And a loading source 3 is arranged outside the oscillator.
As an embodiment of the invention, the loading source can be explosive detonation loading or high-speed flyer impact, the embodiment adopts a high-speed flyer with the speed of 50m/s, the oscillator adopts a cylinder with the diameter of 100mm and the thickness of 20mm, and the material is 7075 aluminum alloy; the base is made of stainless steel, and the first fixed connection structure adopts studs arranged annularly to fixedly connect the oscillating body and the base together; the device to be measured is a cylinder with the diameter of 12mm and the thickness of 3mm, the material is titanium alloy, the device to be measured is fixed on the back of the oscillating body through a second fixed connection structure, and the second fixed connection structure also adopts studs arranged in the circumferential direction.
In the assembling process, in order to ensure that the oscillating body is fixedly connected with the base, the first fixedly connecting structure (stud) is required to be screwed, and similarly, the second fixedly connecting structure (stud) is required to be screwed.
The effectiveness of the experimental device is researched through a numerical simulation research method, the change rule of the acceleration in a numerical calculation model and a device to be tested along with time is shown in figure 2, and as can be seen from figure 2, the peak acceleration obtained by the method exceeds the peak acceleration in the penetration process, the duration reaches ms magnitude, and the method is a high overload loading technology with a certain application prospect.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (8)
1. The utility model provides a high overload loading device based on structural vibration under stress wave transmission loading which characterized in that: including a hollow base in upper portion, the base top is through first fixedly connected with that links firmly the structure and vibrates the body, and it has the loading source to vibrate external side to link firmly the fixedly connected with device under test through the second below vibrating the body.
2. The high overload loading device based on structural vibration under stress wave transmission loading according to claim 1, wherein:
the oscillating body is of a cylinder, a cuboid or a beam structure.
3. The high overload loading device based on structural vibration under stress wave transmission loading according to claim 2, wherein:
the oscillator is a cylinder with the diameter of 100mm and the thickness of 20mm, and is made of 7075 aluminum alloy.
4. The high overload loading device based on structural vibration under stress wave transmission loading according to claim 1, wherein:
the loading source is a high-speed and high-pressure detonation product generated by detonation of the explosive or a flying sheet flying at a high speed.
5. The high overload loading device based on structural vibration under stress wave transmission loading according to claim 1, wherein:
the base is made of stainless steel.
6. The high overload loading device based on structural vibration under stress wave transmission loading according to claim 1, wherein:
the first fixed connection structure and the second fixed connection structure are studs arranged annularly.
7. The high overload loading device based on structural vibration under stress wave transmission loading according to claim 4, wherein:
the flying piece flying at high speed is 50 m/s.
8. The high overload loading device based on structural vibration under stress wave transmission loading according to claim 1, wherein:
the device to be tested is a cylinder with the diameter of 12mm and the thickness of 3mm, and the material is titanium alloy.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN108387463B true CN108387463B (en) | 2020-10-16 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120083696A (en) * | 2011-01-18 | 2012-07-26 | 연세대학교 산학협력단 | Apparatus and system for measuring deformation of concrete structure under blast loading |
| CN103245574A (en) * | 2013-05-04 | 2013-08-14 | 太原科技大学 | Method and device for driving loading of metal flying piece by multistage detonation of explosive |
| CN103454164A (en) * | 2013-09-13 | 2013-12-18 | 安徽理工大学 | Multi-field coupled coal rock impact loading experimental device and method |
| CN103487337A (en) * | 2013-09-02 | 2014-01-01 | 西安近代化学研究所 | Composite loading test device for explosive blasting impact and shearing |
| RU2603995C1 (en) * | 2015-11-05 | 2016-12-10 | Федеральное государственное казенное учреждение "12 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации | Method for generation of air blast wave |
| CN205898722U (en) * | 2016-08-04 | 2017-01-18 | 华中科技大学 | Explosion testing apparatus |
| CN107356487A (en) * | 2017-08-22 | 2017-11-17 | 中国工程物理研究院化工材料研究所 | High overload loading device based on stress wave multiple reflections under high explosive effect |
| CN107389790A (en) * | 2017-06-13 | 2017-11-24 | 同济大学 | The visual test device of roadbed dither under a kind of plane strain condition |
-
2018
- 2018-01-30 CN CN201810091328.7A patent/CN108387463B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120083696A (en) * | 2011-01-18 | 2012-07-26 | 연세대학교 산학협력단 | Apparatus and system for measuring deformation of concrete structure under blast loading |
| CN103245574A (en) * | 2013-05-04 | 2013-08-14 | 太原科技大学 | Method and device for driving loading of metal flying piece by multistage detonation of explosive |
| CN103487337A (en) * | 2013-09-02 | 2014-01-01 | 西安近代化学研究所 | Composite loading test device for explosive blasting impact and shearing |
| CN103454164A (en) * | 2013-09-13 | 2013-12-18 | 安徽理工大学 | Multi-field coupled coal rock impact loading experimental device and method |
| RU2603995C1 (en) * | 2015-11-05 | 2016-12-10 | Федеральное государственное казенное учреждение "12 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации | Method for generation of air blast wave |
| CN205898722U (en) * | 2016-08-04 | 2017-01-18 | 华中科技大学 | Explosion testing apparatus |
| CN107389790A (en) * | 2017-06-13 | 2017-11-24 | 同济大学 | The visual test device of roadbed dither under a kind of plane strain condition |
| CN107356487A (en) * | 2017-08-22 | 2017-11-17 | 中国工程物理研究院化工材料研究所 | High overload loading device based on stress wave multiple reflections under high explosive effect |
Non-Patent Citations (1)
| Title |
|---|
| 凝聚态***爆轰测试技术研究进展;龙新平 等;《力学进展》;20120325;第42卷(第2期);全文 * |
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