CN116736026B - Method for constructing ultrahigh overload assessment environment by utilizing secondary light air cannon launching process - Google Patents
Method for constructing ultrahigh overload assessment environment by utilizing secondary light air cannon launching process Download PDFInfo
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- CN116736026B CN116736026B CN202311014320.8A CN202311014320A CN116736026B CN 116736026 B CN116736026 B CN 116736026B CN 202311014320 A CN202311014320 A CN 202311014320A CN 116736026 B CN116736026 B CN 116736026B
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- overload
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000012360 testing method Methods 0.000 claims abstract description 42
- 230000001133 acceleration Effects 0.000 claims abstract description 32
- 238000007493 shaping process Methods 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000035515 penetration Effects 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
- F41B11/80—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention belongs to the field of high overload such as ultra-high speed model launching and penetration, and discloses a method for constructing an ultra-high overload assessment environment by utilizing a secondary light gas gun launching process. The method for constructing the ultra-high overload assessment environment by utilizing the secondary light gas gun emission process comprises the steps of defining the requirement of the ultra-high overload assessment environment; analyzing the inner trajectory of the secondary light gas gun; determining the filling parameters of the secondary light gas cannon; shaping an overload acceleration curve; and performing ultra-high overload assessment test. The method for constructing the ultra-high overload assessment environment by utilizing the secondary light air cannon launching process can construct the high overload assessment environment with overload acceleration exceeding 10000g and loading time of 10ms, is suitable for high overload assessment resistance of electronic equipment, and has engineering application value.
Description
Technical Field
The invention belongs to the field of high overload such as ultra-high speed model launching and penetration, and discloses a method for constructing an ultra-high overload assessment environment by utilizing a secondary light gas gun launching process.
Background
At present, the main method for evaluating the high overload resistance of the electronic equipment is a hammering or impact mode, namely, the electronic equipment to be tested is directly or indirectly impacted for one time or a plurality of times by utilizing the modes of falling weight, pendulum weight or Hopkinson bar impact and the like, and the high overload resistance of the electronic equipment is evaluated by monitoring the working state of the electronic equipment in the impact process (or before and after the impact process). The peak overload acceleration generated by such hammer or impact modes is typically thousands to tens of thousands of g, with loading durations typically on the order of tens of microseconds.
By adopting the impact overload shaping and other modes, the loading time of the hammering or striking mode can be further prolonged to the millisecond level, but the acceleration peak value can be reduced to thousands g, hundreds g or even lower, because of insufficient overload loading energy generated by the hammering or striking mode. The electronic equipment is subjected to high overload resistance assessment in a hammering or impact mode, and the phenomenon that the electronic equipment fails in the actual application process although the electronic equipment passes the overload resistance experimental assessment often occurs.
In order to solve the problem of insufficient energy loading of the overload-resistant assessment environment of the existing electronic equipment, currently, development of a method for constructing an ultrahigh overload assessment environment by utilizing a secondary light air gun launching process is needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for constructing an ultra-high overload assessment environment by utilizing a secondary light air cannon launching process, which is used for assessing the anti-high overload performance of electronic equipment.
The invention discloses a method for constructing an ultrahigh overload assessment environment by utilizing a secondary light air cannon launching process, which comprises the following steps:
s1, determining the requirement of an ultrahigh overload assessment environment;
based on the quality, structure and high overload resistance of the test model, the requirement of the test environment is checked, and overload acceleration amplitude and loading time required by the ultra-high overload test environment are clearly constructed;
s2, analyzing the inner trajectory of the secondary light gas gun;
according to the construction requirement of the ultra-high overload assessment environment and the quality and structure of the test model, carrying out internal trajectory calculation analysis on a pre-selected secondary light gas gun with a fixed size, and determining the launching speed of the secondary light gas gun launching test model by taking the half pulse width or 1/3 pulse width of an acceleration curve exceeding a preset acceleration amplitude as a target;
s3, determining filling parameters of the secondary light air cannon;
determining filling parameters of the secondary light gas gun according to a test model and a launching speed of the secondary light gas gun, wherein the filling parameters comprise the loading quantity, the piston mass, the inflation quantity and the membrane size;
s4, shaping an overload acceleration curve;
determining an overload curve shaping target according to the overload acceleration amplitude and the loading time required by the ultrahigh overload assessment environment; if the overload acceleration peak value needs to be reduced and the loading time needs to be prolonged, the overload acceleration curve shaping is carried out by filling or encapsulating buffer materials;
s5, performing ultrahigh overload assessment test;
assembling a test model, closing a test model shell, installing and fixing electronic equipment in a high overload environment construction space of an inner cavity of the test model, installing and fixing a circuit module comprising a matched power supply in the residual inner cavity space of the test model, filling and sealing a buffer material in the inner cavity of the test model, installing the test model in a secondary light air gun for emission, obtaining an overload acceleration and loading time curve, and verifying whether the ultra-high overload assessment environment meets requirements; and if the requirements are met, finishing the design, otherwise, repeating S2-S4 until the requirements are met.
The method for constructing the ultra-high overload assessment environment by utilizing the secondary light air cannon launching process can construct the high overload assessment environment with overload acceleration exceeding 10000g and loading time of 10ms, is suitable for high overload assessment resistance of electronic equipment, and has engineering application value.
Drawings
FIG. 1 is a flow chart of a method of constructing an ultra-high overload assessment environment using a secondary light air cannon firing process in accordance with the present invention;
FIG. 2 is a schematic view of the structure of a blunt body model of example 1;
fig. 3 is an overload curve obtained after impact overload shaping of the blunt body model of example 1.
In the figure, 1. An ultra-high overload assessment environment area; 2. a buffer material; 3. a test model housing; 4. and a circuit module.
Detailed Description
In order to make the design method and advantages of the invention clearer, the method for constructing the ultra-high overload assessment environment by utilizing the secondary light air cannon launching process is provided, and the embodiment of the method for designing the anti-high overload assessment environment by establishing the blunt body model is a part of embodiments of the invention, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
the test model of the embodiment is a blunt body model, the specific structure of which is shown in fig. 2, the blunt body model is provided with a closed model shell 3, a high overload environment construction space 1 is arranged in the center of the model shell 3, and a circuit module 4 such as a matched power supply is installed and fixed in the residual space in the model shell 3.
As shown in fig. 1, the method for constructing an ultra-high overload assessment environment by using a secondary light air gun launching process in the embodiment includes the following steps:
s1, determining the requirement of an ultrahigh overload assessment environment;
based on the quality, structure and high overload resistance of the test model, the requirement of the test environment is checked, and overload acceleration amplitude and loading time required by the ultra-high overload test environment are clearly constructed;
the mass of the blunt body model is 1kg, and the overload acceleration amplitude of the high overload environment construction space 1 in the blunt body model is required to be 15000 g+/-5000 g, and the loading time is required to be not less than 10ms.
S2, analyzing the inner trajectory of the secondary light gas gun;
according to the construction requirement of the ultra-high overload assessment environment and the quality and structure of the test model, carrying out internal trajectory calculation analysis on a pre-selected secondary light gas gun with a fixed size, and determining the launching speed of the secondary light gas gun launching test model by taking the half pulse width or 1/3 pulse width of an acceleration curve exceeding a preset acceleration amplitude as a target;
the caliber of the secondary light air gun is 120mm, and the emission speed of the blunt body model is determined to be 3.0km/s by taking the half pulse width of an acceleration curve exceeding 15000g as a target.
S3, determining filling parameters of the secondary light air cannon;
determining filling parameters of the secondary light gas gun according to a test model and a launching speed of the secondary light gas gun, wherein the filling parameters comprise the loading quantity, the piston mass, the inflation quantity and the membrane size;
the present example sets the loading parameters according to a blunt body model weighing 1 kg.
S4, shaping an overload acceleration curve;
determining an overload curve shaping target according to the overload acceleration amplitude and the loading time required by the ultrahigh overload assessment environment; if the overload acceleration peak value needs to be reduced and the loading time needs to be prolonged, the overload acceleration curve is shaped through filling or encapsulating the buffer material.
S5, performing ultrahigh overload assessment test;
assembling a test model, closing a test model shell 3, installing and fixing electronic equipment in a high overload environment construction space 1 of an inner cavity of the test model, installing and fixing a circuit module 4 comprising a matched power supply in the residual inner cavity space of the test model, filling and sealing a buffer material 2 in the inner cavity of the test model, installing the test model in a secondary light air gun, transmitting to obtain an overload acceleration and loading time curve, and verifying whether the ultra-high overload assessment environment meets the requirement; and if the requirements are met, finishing the design, otherwise, repeating S2-S4 until the requirements are met.
In this embodiment, an overload curve after shaping the blunt body model as shown in fig. 3 is obtained, and fig. 3 shows that in this embodiment, an ultra-high overload assessment environment with an overload acceleration amplitude exceeding 10000g and a loading time exceeding 20ms is established, so that the effectiveness of the present invention is verified.
Claims (1)
1. The method for constructing the ultra-high overload assessment environment by utilizing the secondary light gas gun launching process is characterized by comprising the following steps of:
s1, determining the requirement of an ultrahigh overload assessment environment;
based on the quality, structure and high overload resistance of the test model, the requirement of the test environment is checked, and overload acceleration amplitude and loading time required by the ultra-high overload test environment are clearly constructed;
s2, analyzing the inner trajectory of the secondary light gas gun;
according to the construction requirement of the ultra-high overload assessment environment and the quality and structure of the test model, carrying out internal trajectory calculation analysis on a pre-selected secondary light gas gun with a fixed size, and determining the launching speed of the secondary light gas gun launching test model by taking the half pulse width or 1/3 pulse width of an acceleration curve exceeding a preset acceleration amplitude as a target;
s3, determining filling parameters of the secondary light air cannon;
determining filling parameters of the secondary light gas gun according to a test model and a launching speed of the secondary light gas gun, wherein the filling parameters comprise the loading quantity, the piston mass, the inflation quantity and the membrane size;
s4, shaping an overload acceleration curve;
determining an overload curve shaping target according to the overload acceleration amplitude and the loading time required by the ultrahigh overload assessment environment; if the overload acceleration peak value needs to be reduced and the loading time needs to be prolonged, the overload acceleration curve shaping is carried out by filling or encapsulating buffer materials;
s5, performing ultrahigh overload assessment test;
assembling a test model, closing a test model shell (3), installing and fixing electronic equipment in a high overload environment construction space (1) of an inner cavity of the test model, installing and fixing a circuit module (4) comprising a matched power supply in the space of the remaining inner cavity of the test model, filling and sealing a buffer material (2) in the inner cavity of the test model, installing the test model in a secondary light air gun, transmitting to obtain an overload acceleration and loading time curve, and verifying whether the ultrahigh overload assessment environment meets requirements; and if the requirements are met, finishing the design, otherwise, repeating S2-S4 until the requirements are met.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311014320.8A CN116736026B (en) | 2023-08-14 | 2023-08-14 | Method for constructing ultrahigh overload assessment environment by utilizing secondary light air cannon launching process |
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| CN202311014320.8A CN116736026B (en) | 2023-08-14 | 2023-08-14 | Method for constructing ultrahigh overload assessment environment by utilizing secondary light air cannon launching process |
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| CN116736026B true CN116736026B (en) | 2023-10-10 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104182565A (en) * | 2014-06-25 | 2014-12-03 | 中国空气动力研究与发展中心超高速空气动力研究所 | Design method of secondary light-gas gun test model |
| CN109579642A (en) * | 2018-11-29 | 2019-04-05 | 天津航天瑞莱科技有限公司 | Integral type high overload air bubble impacts shell |
| CN110441020A (en) * | 2019-09-06 | 2019-11-12 | 中国工程物理研究院总体工程研究所 | High-impact acceleration pilot system and test method |
| CN114965115A (en) * | 2022-04-18 | 2022-08-30 | 北京理工大学 | Continuous and repeated high-impact loading test and test system and method |
-
2023
- 2023-08-14 CN CN202311014320.8A patent/CN116736026B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104182565A (en) * | 2014-06-25 | 2014-12-03 | 中国空气动力研究与发展中心超高速空气动力研究所 | Design method of secondary light-gas gun test model |
| CN109579642A (en) * | 2018-11-29 | 2019-04-05 | 天津航天瑞莱科技有限公司 | Integral type high overload air bubble impacts shell |
| CN110441020A (en) * | 2019-09-06 | 2019-11-12 | 中国工程物理研究院总体工程研究所 | High-impact acceleration pilot system and test method |
| CN114965115A (en) * | 2022-04-18 | 2022-08-30 | 北京理工大学 | Continuous and repeated high-impact loading test and test system and method |
Non-Patent Citations (2)
| Title |
|---|
| 苏红星.高过载空气炮系统实验技术研究.中国优秀硕士学位论文全文数据库.2018,全文. * |
| 邓涛.空气炮加速度过载试验技术研究.中国优秀硕士学位论文全文数据库.2011,全文. * |
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