CN109596801A - A kind of store experiment device and method for simulating solid rocket motor grain stress - Google Patents
A kind of store experiment device and method for simulating solid rocket motor grain stress Download PDFInfo
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- CN109596801A CN109596801A CN201811401926.6A CN201811401926A CN109596801A CN 109596801 A CN109596801 A CN 109596801A CN 201811401926 A CN201811401926 A CN 201811401926A CN 109596801 A CN109596801 A CN 109596801A
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- 239000007787 solid Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000002474 experimental method Methods 0.000 title claims description 25
- 239000003380 propellant Substances 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 239000006101 laboratory sample Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract description 2
- 230000006735 deficit Effects 0.000 abstract 1
- 238000010998 test method Methods 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011981 development test Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/222—Solid fuels, e.g. coal
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- 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
- G01N2203/0244—Tests performed "in situ" or after "in situ" use
- G01N2203/0246—Special simulation of "in situ" conditions, scale models or dummies
-
- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0298—Manufacturing or preparing specimens
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of storage test devices for simulating solid rocket motor grain stress, it is made of propellant strain device and video monitoring system, propellant strain device includes pedestal, support rod, locating rod, fixed link, lower fixture, upper fixture and positioning bolt, the adjustment that upper fixture, lower clamp distance are realized by locating rod, positioning ring, positioning bolt, fixture nut, location nut realizes that the continuity of the stretching displacement of propellant is adjusted.Utilize the device and method, it is capable of the stress condition of simulated engine powder column, realize the monitoring that the lower performance of propellant variation and degree of impairment are acted on stress, assess performance deterioration condition of propellant under the conditions of combined stress, test method is provided for the life appraisal of motor charge, provides data supporting to improve the life appraisal of engine.
Description
Technical field
The present invention relates to the store experiment device and method under simulation solid rocket motor grain stress, in particular to send out
Shelf characteric experimental provision and method in motivation under propellant stress, applied to strategy, the longevity of tactics solid engines
Order assessment technology field.
Background technique
Solid engines be made after most times all in stored condition, solid engines are both by temperature, wet
The influence of the war preparedness environmental factor such as degree, air pressure, but it is flat by overload impact, temperature shock, the change of pressure speed and rocking vibration etc.
The influence of platform carrier environments factor, these composite factors finally act on solid engines in the form of stress.In practical storage
In, as long as engine metal shell does not corrode, mechanical performance will not significant changes, as long as the shell of composite material is not exposed to
Under outdoor environment, loss of strength is minimum, and the rubber components of sealing can be replaced.Obviously, the weak link of solid engines is hair
Motivation powder column.The powder column performance of general Study engine need to carry out storage test using random square billet and characterize motor grain
It can deterioration.But random square billet is not affected by the effect of the combined stress in engine, therefore for simulated engine powder column etc. effects
Power need to establish a kind of storage test device that can be simulated under solid rocket motor grain stress, by stress in propulsion
Agent finally realizes the assessment experiment of motor grain shelf characteric.Carried out when domestic development test at present using stretching-machine complete
Portion or part Experiment, experimental cost is high, and the storage test device of this simulation solid rocket motor grain stress is without making
With stretching-machine, engine combined stress is scaled equivalent strain, equivalent strain is scaled stretching displacement in actual experiment.Benefit
Carried out with the device and tested, cost input is low, and completion is quick, efficient, solves to test dress to carry out the scientific research department of such experiment
It sets and method problem.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of storage tests for simulating solid rocket motor grain stress
Device, to solve the problems, such as the storage test under simulation solid rocket motor grain stress；Meanwhile the present invention also provides the dresses
The application method set, with the use problem of solving device.
To solve, the technical solution adopted by the present invention is that: a kind of simulation solid rocket motor grain is answered
The storage test device of power effect, is made of propellant strain device and video monitoring system,
The propellant strain device includes pedestal, support rod, locating rod, fixed link, lower fixture, upper fixture and positioning spiral shell
Bolt, the support rod and lower fixture are fixed on the base；Upper fixture is fixed on the securing lever；Upper fixture and lower fixture are symmetrical, with
Guarantee that the standard specimen being mounted in upper fixture and lower fixture can be stretched vertically；The fixed link is mounted on support rod
End；The locating rod is by positioning ring set on support rod；Positioning bolt lower end is fixed on the securing lever, and positioning bolt upper end is logical
Fixture nut is crossed to connect with fixed link；Location nut is installed on the positioning bolt between fixture nut and fixed link, and adjusting is passed through
Location nut changes the distance of upper fixture and lower fixture, and the stretching displacement of Lai Shixian standard specimen continuously adjusts.
The application method of storage test device of the present invention, the steps include:
Experiment strain is scaled stretching displacement by first step；
Second step adjusts location nut, and direction moves down for locating rod, and displacement movement speed slowly, uniformly, is pressed from both sides in bigness scale
One end of standard specimen is installed to upper fixture when upper fixture and lower clamp distance are close to gauge length by the distance of tool and lower fixture
On, fine-adjusting positioning nut adjusts standard specimen shape until the standard specimen other end can be suspended on lower fixture with gauge length distance
State, it is desirable that test specimen is " 0 " strain regime, and standard specimen holding is unfolded, and upper fixture and lower fixture are gauge length distance, and record is fixed at this time
The corresponding scale of position bar；
Third step adjusts location nut, and direction moves up for locating rod, until locating rod, which reaches, calculates moving distance；
Four steps is identified experiment, and experiment time started, laboratory sample title, strain are indicated on experiment Sign Board
Value waits record project.
Engine stress is converted into equivalent strain value by calculating when experimental rig of the invention is embodied, was tested
Equivalent strain value is scaled stretching displacement in journey.Propellant strain device height can need to strain according to specific experiment to be set
It sets, experimental provision, which can be put into according to environmental requirement in the environmental test chamber for meeting size requirement, carries out related experiment.
Beneficial effect
(1) present apparatus is applied to propellant effects of strain power, exists for propellant in simulated engine by adjusting stretching displacement
Stored condition under the conditions of combined stress；
(2) present apparatus is suitable for the propellant strain-gauge test of strain value≤30%.
Detailed description of the invention
Fig. 1 is propellant strain device schematic diagram, including pedestal 1, support rod 2, locating rod 3, positioning ring 4, is fixed
Bar 5, lower fixture 6, upper fixture 7, positioning bolt 8, fixture nut 9, location nut 10, standard specimen 11.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples:
Embodiment: certain 10% simulated experiment of model motor grain equivalent strain
Implement to strain: 10%
Period of storage: 100 days；
Storage temperature: 25 ± 5 DEG C；
It stores humidity: being no more than 70%.
The storage test device of simulation solid rocket motor grain stress of the invention, by propellant strain device and view
Frequency monitoring system composition,
As shown in Fig. 1, propellant strain device includes pedestal 1, support rod 2, locating rod 3, positioning ring 4, fixed link 5, lower folder
Have 6, upper fixture 7, positioning bolt 8, fixture nut 9, location nut 10, standard specimen 11,
Support rod 2 and lower fixture 6 are fixed on pedestal 1；Upper fixture 7 is fixed in locating rod 3；Upper fixture 6 and lower fixture 7 are right
Claim, to guarantee that the standard specimen 11 being mounted in upper fixture 6 and lower fixture 7 can be stretched vertically；Upper fixture 6 and lower fixture 7
Quantity be 5 pairs or can according to need be adjusted；The width of upper fixture 6 and lower fixture 7 is 26mm, length 36mm, convergence
Mouth radian is 12.5 °, to meet the size requirement of standard specimen 11.The standard specimen 11 is the A in National Military Standard
Type test specimen, gauge length 70cm.
Fixed link 5 is mounted on 2 upper end of support rod；Locating rod 3 is by 4 sets of positioning ring on support rod 2；Under positioning bolt 8
End is fixed in locating rod 3, and 8 upper end of positioning bolt is connect by fixture nut 9 with fixed link 5；The installation of location nut 10 is fixed
On positioning bolt 8 between nut 9 and fixed link 5, changed by adjusting location nut 10 upper fixture 6 and lower fixture 7 away from
From the stretching displacement of Lai Shixian propellant continuously adjusts.
Locating rod 3 of the invention, positioning ring 4, positioning bolt 8, fixture nut 9, location nut 10 form linkage, should
Linkage finally realizes the adjusting of upper fixture 6 and lower 7 distance of fixture, this feature is the core of the invention.
Scale is identified on support rod 2, scale division value 1mm guarantees the accurate positionin and device uniform force of locating rod 3.
Based on security consideration, rubber layer is uniformly smeared in the bottom of pedestal 1.
Propellant strain device height can need to strain according to specific experiment to be configured, and experimental provision can be wanted according to environment
It asks to put into the environmental test chamber for meeting size requirement and carries out related experiment.
Standard specimen 11 is installed to the upper fixture 7 of propellant strain device, in lower fixture 6, spanner is utilized to adjust positioning
3 moving distance of bar.
Video monitoring system is used for policer operation, and all operations carry out under video monitoring system.
Specific experiment step:
First step, 11 gauge length of standard specimen are 70mm, implement 10% strain value, calculate bid according to formula 70mm × 10%=7mm
The stretching displacement of quasi- test specimen 11 is 7mm；
Second step adjusts location nut 10 using spanner, and direction is that locating rod 3 moves down, and tensile speed is slow, uniform,
When the distance of the upper and lower fixture of bigness scale is essentially 70mm, one end of standard specimen 11 is installed in upper fixture 7, fine tuning positioning spiral shell
Mother 10 adjusts 11 state of standard specimen until 11 other end of standard specimen can be suspended on lower fixture 6 with free tensional state,
It is required that standard specimen is " 0 " strain regime, the holding of standard specimen 11 is unfolded, and record is at this time on the corresponding support rod 2 of locating rod 3
Scale value is at 43mm；
Third step adjusts location nut 9 using spanner opposite direction, so that locating rod 3 moves up, until locating rod 3 reaches
Moving distance 7mm, corresponding to the scale value on support rod 2 is at 36mm；
Four steps is identified experiment, and experiment time started, laboratory sample title, strain are indicated on experiment Sign Board
Value waits record project.
Using the experimental provision and method, the simulated experiment of multiple model motor grain stresses has been carried out, has been assessed
Propellant stores the ability of resistance to long-term stress under various circumstances, provides data and side to correct the service life of motor charge
Method.
Claims (3)
1. a kind of storage test device for simulating solid rocket motor grain stress, by propellant strain device and video monitoring
System composition, it is characterised in that:
The propellant strain device include pedestal (1), support rod (2), locating rod (3), fixed link (5), lower fixture (6),
Upper fixture (7) and positioning bolt (8), the support rod (2) and lower fixture (6) are fixed on pedestal (1)；Upper fixture (7) is fixed
On locating rod (3)；Upper fixture (6) and lower fixture (7) symmetrically, to guarantee the mark that is mounted in upper fixture (6) and lower fixture (7)
Quasi- test specimen (11) can be stretched vertically；The fixed link (5) is mounted on support rod (2) upper end；It is fixed that the locating rod (3) passes through
Position ring (4) covers on support rod (2)；Positioning bolt (8) lower end is fixed on locating rod (3), and positioning bolt (8) upper end passes through solid
Determine nut (9) to connect with fixed link (5)；Location nut (10) installs the positioning bolt between fixture nut (9) and fixed link (5)
(8) on, change the distance of upper fixture (6) and lower fixture (7), Lai Shixian standard specimen (11) by adjusting location nut (10)
Stretching displacement continuously adjust.
2. storage test device according to claim 1, it is characterised in that: be identified with scale on the support rod (2).
3. the application method of storage test device according to claim 1 or 2, the steps include:
Experiment strain is scaled stretching displacement by first step；
Second step is adjusted location nut (10), and direction is that locating rod (3) move down, and displacement movement speed is slow, uniform,
The distance of bigness scale upper fixture (6) and lower fixture (7) tries standard when upper fixture (6) and lower fixture (7) distance are close to gauge length
One end of part (11) is installed on upper fixture (6), fine-adjusting positioning nut (10), until standard specimen (11) other end can be with mark
It is suspended on lower fixture (7) away from distance, adjusts standard specimen (11) state, it is desirable that test specimen is " 0 " strain regime, standard specimen (11)
Holding is unfolded, and upper fixture (6) and lower fixture (7) are gauge length distance, records the corresponding scale of locating rod (3) at this time；
Third step is adjusted location nut (10), and direction is that locating rod (3) move up, and is moved until locating rod (3) reach to calculate
Dynamic distance；
Four steps is identified experiment, and experiment time started, laboratory sample title, strain are indicated on experiment Sign Board
Value waits record project.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401926.6A CN109596801A (en) | 2018-11-22 | 2018-11-22 | A kind of store experiment device and method for simulating solid rocket motor grain stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401926.6A CN109596801A (en) | 2018-11-22 | 2018-11-22 | A kind of store experiment device and method for simulating solid rocket motor grain stress |
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| Publication Number | Publication Date |
|---|---|
| CN109596801A true CN109596801A (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811401926.6A Pending CN109596801A (en) | 2018-11-22 | 2018-11-22 | A kind of store experiment device and method for simulating solid rocket motor grain stress |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455620A (en) * | 2019-07-31 | 2019-11-15 | 南京理工大学 | A kind of small-sized composite wood anticipates strain fatigue experimental rig |
| CN110530719A (en) * | 2019-08-30 | 2019-12-03 | 湖北三江航天江河化工科技有限公司 | Propellant one directional tensile test device and method |
| CN110646582A (en) * | 2019-08-02 | 2020-01-03 | 南京理工大学 | Variable strain experimental device for test pieces with different sizes |
| CN112179771A (en) * | 2020-09-30 | 2021-01-05 | 中国兵器工业第五九研究所 | Solid propellant strain capacity loader and use method thereof |
| CN114624415A (en) * | 2022-05-16 | 2022-06-14 | 北京理工大学 | Accelerated aging test device and method for solid propellant |
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| CN110646582A (en) * | 2019-08-02 | 2020-01-03 | 南京理工大学 | Variable strain experimental device for test pieces with different sizes |
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| CN114624415A (en) * | 2022-05-16 | 2022-06-14 | 北京理工大学 | Accelerated aging test device and method for solid propellant |
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Application publication date: 20190409 |