CN113670745A - Impulse measurement device and method based on plastic metal diaphragm and laser Doppler effect - Google Patents
Impulse measurement device and method based on plastic metal diaphragm and laser Doppler effect Download PDFInfo
- Publication number
- CN113670745A CN113670745A CN202111014882.3A CN202111014882A CN113670745A CN 113670745 A CN113670745 A CN 113670745A CN 202111014882 A CN202111014882 A CN 202111014882A CN 113670745 A CN113670745 A CN 113670745A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- plastic metal
- metal diaphragm
- back plate
- impulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 120
- 230000000694 effects Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005259 measurement Methods 0.000 title claims description 13
- 239000013307 optical fiber Substances 0.000 claims abstract description 28
- 238000004880 explosion Methods 0.000 claims abstract description 26
- 239000000523 sample Substances 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000035939 shock Effects 0.000 claims description 37
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 5
- 238000004141 dimensional analysis Methods 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 238000000691 measurement method Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 239000002360 explosive Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/50—Systems of measurement based on relative movement of target
- G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention relates to an impulse measuring device and method based on a plastic metal diaphragm and a laser Doppler effect, and aims to solve the problem that the existing measuring method of explosion impulse is not suitable for being widely used in large and complex explosion fields due to the influences of test stability, use cost, environmental factors and the like. The impulse measuring device comprises a plastic metal diaphragm, a diaphragm fixing back plate and a laser speed measuring mechanism. The plastic metal diaphragm is a circular diaphragm, a circular groove is formed in the central area of one side of the plastic metal diaphragm, the plastic metal diaphragm is fixedly installed on one side of the diaphragm fixing back plate, and the side provided with the circular groove is connected with the diaphragm fixing back plate; a light through hole is formed in the center of the diaphragm fixing back plate, which is opposite to the plastic metal diaphragm; the laser speed measuring mechanism comprises an optical fiber probe, an optical fiber and a PDV processing system which are sequentially connected, the optical fiber probe is fixedly arranged on the other side of the diaphragm fixing back plate, and laser emitted by the optical fiber probe can irradiate the center of the plastic metal diaphragm through the light through hole.
Description
Technical Field
The invention belongs to the technical field of impact dynamics, and particularly relates to an impulse measuring device and method based on a plastic metal diaphragm and a laser Doppler effect.
Background
When the explosion damage power is examined, the measurement of the explosion shock wave is an important reference index. The damage of the shock wave to facilities, buildings, human bodies and the like is mainly caused by the pressure action of the shock wave, namely overpressure and impulse, and the measurement of the impulse of the shock wave has important significance for researching the response and the damage of the explosion shock wave action on the structure. Due to the short duration, high overpressure and complex action process of the explosion process, the engineering measurement of the impulse of the shock wave is difficult, but the shock wave is always concerned by scientific researchers. At present, methods such as a piezoelectric sensor, a flying piece method, a throwing method, an impulse pendulum and the like are mainly adopted for measuring the impulse, but most of measuring methods are influenced by aspects such as testing stability, use cost, environmental factors and the like, and are not suitable for being widely used in large and complex explosion fields.
Disclosure of Invention
The invention aims to solve the problem that the existing measuring method for the explosion impulse is not suitable for being widely used in large and complex explosion fields due to the influences of the aspects of test stability, use cost, environmental factors and the like. In order to overcome the defects, the use scene of impulse measurement is expanded, and especially under the environment with small explosion ratio distance and high impulse of shock waves, the measurement can be carried out through the comprehensive application of the plastic metal diaphragm and the laser Doppler effect. The method is based on the principle that the plastic metal diaphragm has obvious deformation difference under the action of different impulses, obtains the corresponding relation between the plastic deformation of the metal diaphragm and the impulse of the shock wave through theoretical derivation, and then measures the central displacement of the metal diaphragm under the action of the explosive load by utilizing the laser Doppler effect principle, thereby obtaining the measured value of the impulse of the shock wave under the explosive environment.
The technical scheme adopted by the invention is as follows:
an impulse measuring device based on plastic metal diaphragm and laser Doppler effect is characterized in that: the device comprises a plastic metal diaphragm, a diaphragm fixing back plate and a laser speed measuring mechanism;
the plastic metal diaphragm is a circular diaphragm, a circular groove is formed in the center area of one side of the circular diaphragm, and the area of the plastic metal diaphragm corresponding to the bottom of the circular groove is a pressed surface; the plastic metal diaphragm is fixedly arranged on one side of the diaphragm fixing back plate, and one side of the plastic metal diaphragm, which is provided with the circular groove, is connected with the diaphragm fixing back plate;
the diaphragm fixing back plate is provided with a light through hole, and the light through hole is opposite to the center of the plastic metal diaphragm;
the laser speed measuring mechanism comprises an optical fiber probe, an optical fiber and a PDV processing system which are connected in sequence; the optical fiber probe is fixedly arranged on the other side of the diaphragm fixing back plate, and laser emitted by the optical fiber probe can irradiate the center of the plastic metal diaphragm through the light through hole.
Furthermore, a diaphragm mounting groove is formed in one side of the diaphragm fixing back plate, and the plastic metal diaphragm is fixedly mounted in the diaphragm mounting groove through diaphragm fixing bolts which are uniformly distributed in the circumferential direction;
the optical fiber probe is fixedly arranged on the other side of the diaphragm fixing back plate through an optical fiber probe support.
Further, the diaphragm fixing back plate is fixedly installed on a fixing support structure at the experimental measurement point through a back plate fixing bolt.
The impulse measuring method based on the plastic metal diaphragm and the laser Doppler effect adopts the impulse measuring device based on the plastic metal diaphragm and the laser Doppler effect, and is characterized by comprising the following steps:
1) fixing the diaphragm fixing back plate at an experimental measuring point of an explosion field, wherein the pressed surface of the plastic metal diaphragm is opposite to the explosion center;
2) starting an experiment, wherein the explosion shock wave acts on a compression surface of the plastic metal membrane, and the compression surface is stressed and yields to generate plastic deformation;
meanwhile, laser emitted by the optical fiber probe irradiates the center position of the plastic metal diaphragm through the light through hole, the PDV processing system processes and calculates the movement speed of the center position of the plastic metal diaphragm by utilizing the Doppler effect of the laser, and then the center displacement of the plastic metal diaphragm under the action of shock wave impulse is obtained through integration;
3) and calculating the specific impulse of the explosive shock wave acting on the plastic metal diaphragm according to the relation between the center displacement of the plastic metal diaphragm and the impulse of the shock wave established by a dimensional analysis method, and obtaining a measurement result.
Further, in the step 3), the relationship between the center displacement of the plastic metal diaphragm and the impulse of the shock wave is shown as follows:
wherein w is the center displacement of the plastic metal diaphragm;
h is the thickness of the pressure surface of the plastic metal membrane;
d is the diameter of the compression surface of the plastic metal membrane;
e is the elastic modulus of the plastic metal membrane;
Etis the tangent modulus of the plastic metal diaphragm;
rho is the density of the plastic metal membrane;
σythe yield strength of the plastic metal membrane;
i is the specific impulse of the blast shock wave acting on the plastic metal diaphragm.
Compared with the prior art, the invention has the beneficial effects that:
the impulse measuring device based on the plastic metal diaphragm and the laser Doppler effect can rapidly measure the central displacement of the plastic metal diaphragm under the action of the explosion shock wave, is high in reliability, does not need to take down the plastic metal diaphragm for measurement after an experiment, and solves the problem that the plastic metal diaphragm cannot be recycled. The device has the advantages of simple structure, small limitation on installation environment, wide application range, capability of measuring specific impulse of explosion shock waves within the range of 5000-30000 Pa & s, error of about 10 percent, and capability of meeting engineering requirements in precision.
Drawings
FIG. 1 is a schematic diagram of the environment of use of the impulse measuring device based on a plastic metal diaphragm and laser Doppler effect according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of an impulse measuring device based on a plastic metal diaphragm and a laser Doppler effect according to the invention;
FIG. 3 is a first schematic structural view of a plastic metal diaphragm in an embodiment of the present invention;
FIG. 4 is a second schematic structural view of a plastic metal diaphragm in an embodiment of the present invention;
in the figure, 1-a core is exploded, 2-a diaphragm fixing back plate installation position, 3-a fixing support structure, 4-an optical fiber, 5-a PDV processing system, 6-a plastic metal diaphragm, 61-a pressure surface, 62-a diaphragm fixing threaded hole, 7-a diaphragm fixing bolt, 8-a diaphragm fixing back plate, 9-an optical fiber probe support, 10-an optical fiber probe and 11-a back plate fixing bolt.
FIG. 5 is a graph of the center velocity of a plastic metal diaphragm in one operating condition in accordance with an embodiment of the present invention;
FIG. 6 is a graph of center displacement of a plastic metal diaphragm in one operating condition in accordance with an embodiment of the present invention.
Detailed Description
To make the objects, advantages and features of the present invention more apparent, the impulse measuring device and method based on the plastic metal diaphragm and the laser doppler effect according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The impulse measuring device based on the plastic metal diaphragm and the laser doppler effect provided by the embodiment is shown in fig. 1 and fig. 2, and comprises a plastic metal diaphragm 6, a diaphragm fixing back plate 8 and a laser speed measuring mechanism.
As shown in fig. 3 and 4, the plastic metal diaphragm 6 is a circular diaphragm, and the structure is uniformly stressed and is convenient for subsequent calculation. The diameter and thickness of the plastic metal diaphragm 6 are not limited, a central area of one side of the plastic metal diaphragm is hollowed to a certain depth to form a circular groove, and the area of the plastic metal diaphragm 6 corresponding to the bottom of the circular groove is a pressed surface 61. The depth of the circular groove needs to ensure that the corresponding compression surface 61 has obvious deformation under the action of the explosion shock wave, and the circular groove cannot crack and cannot generate spalling. The diameter of the circular recess is sized to ensure that the plastic metal diaphragm 6 has sufficient space for a fixed mounting. In this embodiment, a plurality of diaphragm fixing threaded holes 62 are circumferentially and uniformly distributed on the plastic metal diaphragm 6 outside the circular groove, and the diaphragm fixing threaded holes 62 are internally provided with diaphragm fixing bolts 7.
8 one sides of diaphragm stationary backplate are equipped with the diaphragm mounting groove, and plasticity metal diaphragm 6 passes through diaphragm fixing bolt 7 fixed mounting in the diaphragm mounting groove, and the one side that plasticity metal diaphragm 6 was equipped with circular recess meets with diaphragm stationary backplate 8. The diaphragm fixing back plate 8 is provided with a light through hole, and the light through hole is opposite to the center position of the plastic metal diaphragm 6.
The laser speed measuring mechanism comprises an optical fiber probe 10, an optical fiber 4 and a PDV (laser displacement interferometer) processing system which are sequentially connected, the optical fiber probe 10 is fixedly installed on the other side of the diaphragm fixing back plate 8 through an optical fiber probe support 9, and laser emitted by the optical fiber probe 10 can irradiate the center position of the plastic metal diaphragm 6, namely the center position of the pressed surface 61 through a light through hole. Based on the laser doppler effect, the center velocity curve of the plastic metal diaphragm as shown in fig. 5 and the center displacement curve of the plastic metal diaphragm as shown in fig. 6 can be obtained through the processing of the PDV processing system 5 calculation program.
The diaphragm fixing back plate 8 can be fixedly installed on the fixing and supporting structure 3 at any experimental measuring point through the back plate fixing bolt 11, as shown in the installation position 2 of the diaphragm fixing back plate in fig. 1, and the compression surface 61 of the plastic metal diaphragm 6 is over against the explosion center 1. When the explosion shock wave acts on the pressure surface 61 of the plastic metal diaphragm 6, the diaphragm is stressed to yield and generates plastic deformation. The laser emitted by the optical fiber probe 10 irradiates the center position of the plastic metal diaphragm 6 through the light through hole, and by utilizing the Doppler effect of the laser, the PDV processing system 5 can accurately measure the movement speed of the center position of the plastic metal diaphragm 6, so that the center displacement of the plastic metal diaphragm 6 under the action of the shock wave impulse is obtained through integration, and the relation between the center displacement of the plastic metal diaphragm and the shock wave impulse is established.
The impulse measuring method by adopting the measuring device comprises the following steps:
1) the diaphragm fixing back plate 8 is fixed at an experimental measuring point of an explosion field, and the compression surface 61 of the plastic metal diaphragm 6 is over against the explosion center 1.
2) Starting an experiment, wherein the explosion shock wave acts on the compression surface 61 of the plastic metal membrane 6, and the compression surface 61 is stressed to yield to generate plastic deformation;
meanwhile, laser emitted by the optical fiber probe 10 irradiates the center position of the plastic metal diaphragm 6 through the light through hole, the PDV processing system 5 processes and calculates the movement speed of the center position of the plastic metal diaphragm 6 by utilizing the Doppler effect of the laser, and then the center displacement of the plastic metal diaphragm 6 under the action of the shock wave impulse is obtained through integration.
3) And calculating the specific impulse of the explosive shock wave acting on the plastic metal diaphragm 6 according to the relation between the center displacement of the plastic metal diaphragm and the impulse of the shock wave established by a dimensional analysis method, and obtaining a measurement result.
Specifically, the dynamic response of the structure of the plastic metal diaphragm 6 under the action of the explosive load is influenced by the boundary of the explosive load, the nonlinearity of the material,Space geometric conditions and other factors, and as explosive explosion obeys the similarity law, the analysis process can be simplified by using a dimensional analysis method. The plastic metal diaphragm 6 dynamically responds under the action of the explosion shock wave, the specific impulse of the explosion shock wave acting on the plastic metal diaphragm 6 is set as i, the diameter and the thickness of a pressure surface 61 of the plastic metal diaphragm 6 are respectively set as D and H, the material density is rho, the elastic modulus is E, and the tangent modulus is EtYield strength of σy. Neglecting the influence of factors such as gravity, material reinforcement, atmospheric pressure, strain rate and the like, the expression of the center displacement w of the plastic metal diaphragm and other parameters is as follows:
f(w,i,D,H,ρ,E,Et,σy)＝0 (1)
converting the above equation into a dimensionless form:
in the formula: x is the number of1～x8Each is an index of each physical quantity.
According to the pi theorem, the relationship between the center displacement of the plastic metal diaphragm and the specific impulse of the explosion shock wave, the diaphragm size and the material can be obtained by carrying out dimensionless arrangement according to the formula:
determining a by numerical simulation and adopting an analysis method of multiple linear regression0～a3The obtained specific impulse is in the range of 5000-30000 Pa · s, and the relation between the center displacement of the plastic metal diaphragm and the impulse of the shock wave is as follows:
the thickness H, the diameter D, the elastic modulus E and the tangent modulus E of the plastic metal diaphragm 6 are knowntMaterial density ρ and yield strength σyIn the case ofThen, the specific impulse i of the explosion shock wave acting on the plastic metal diaphragm 6 can be calculated by measuring the center displacement w of the plastic metal diaphragm.
Claims (5)
1. An impulse measuring device based on plastic metal diaphragm and laser Doppler effect, its characterized in that: comprises a plastic metal diaphragm (6), a diaphragm fixing back plate (8) and a laser speed measuring mechanism;
the plastic metal diaphragm (6) is a circular diaphragm, a circular groove is formed in the central area of one side of the circular diaphragm, and a pressure surface (61) is formed in the area, corresponding to the bottom of the circular groove, of the plastic metal diaphragm (6); the plastic metal diaphragm (6) is fixedly arranged on one side of the diaphragm fixing back plate (8), and one side of the plastic metal diaphragm (6) provided with the circular groove is connected with the diaphragm fixing back plate (8);
the diaphragm fixing back plate (8) is provided with a light through hole, and the light through hole is opposite to the central position of the plastic metal diaphragm (6);
the laser speed measuring mechanism comprises an optical fiber probe (10), an optical fiber (4) and a PDV processing system (5) which are connected in sequence; the optical fiber probe (10) is fixedly arranged on the other side of the diaphragm fixing back plate (8), and laser emitted by the optical fiber probe (10) can irradiate the center of the plastic metal diaphragm (6) through the light through hole.
2. The plastic metal diaphragm and laser doppler effect based impulse measurement device of claim 1, wherein:
a diaphragm mounting groove is formed in one side of the diaphragm fixing back plate (8), and the plastic metal diaphragm (6) is fixedly mounted in the diaphragm mounting groove through diaphragm fixing bolts (7) which are uniformly distributed in the circumferential direction;
the optical fiber probe (10) is fixedly arranged on the other side of the diaphragm fixing back plate (8) through an optical fiber probe support (9).
3. The momentum measuring device based on the plastic metal diaphragm and the laser doppler effect according to claim 1 or 2, wherein:
the diaphragm fixing back plate (8) is fixedly arranged on the fixing support structure (3) at the experimental measuring point through a back plate fixing bolt (11).
4. An impulse measuring method based on a plastic metal diaphragm and a laser Doppler effect, which adopts the impulse measuring device based on the plastic metal diaphragm and the laser Doppler effect as claimed in claim 1, and is characterized by comprising the following steps:
1) fixing the diaphragm fixing back plate (8) at an experimental measuring point of an explosion field, wherein the compression surface (61) of the plastic metal diaphragm (6) is opposite to the explosion center (1);
2) starting an experiment, wherein the explosion shock wave acts on a compression surface (61) of the plastic metal membrane (6), and the compression surface (61) is subjected to stress yielding to generate plastic deformation;
meanwhile, laser emitted by the optical fiber probe (10) irradiates the center position of the plastic metal diaphragm (6) through a light through hole, the PDV processing system (5) processes and calculates the movement speed of the center position of the plastic metal diaphragm (6) by utilizing the Doppler effect of the laser, and then the center displacement of the plastic metal diaphragm (6) under the action of shock wave impulse is obtained through integration;
3) and calculating the specific impulse of the explosion shock wave acting on the plastic metal diaphragm (6) according to the relation between the center displacement of the plastic metal diaphragm and the impulse of the shock wave established by a dimensional analysis method to obtain a measurement result.
5. The momentum measurement method based on the plastic metal diaphragm and the laser doppler effect according to claim 4, wherein:
in the step 3), the relationship between the center displacement of the plastic metal diaphragm and the impulse of the shock wave is shown as the following formula:
wherein w is the center displacement of the plastic metal diaphragm;
h is the thickness of the pressure surface of the plastic metal membrane;
d is the diameter of the compression surface of the plastic metal membrane;
e is the elastic modulus of the plastic metal membrane;
Etis the tangent modulus of the plastic metal diaphragm;
rho is the density of the plastic metal membrane;
σythe yield strength of the plastic metal membrane;
i is the specific impulse of the blast shock wave acting on the plastic metal diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111014882.3A CN113670745A (en) | 2021-08-31 | 2021-08-31 | Impulse measurement device and method based on plastic metal diaphragm and laser Doppler effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111014882.3A CN113670745A (en) | 2021-08-31 | 2021-08-31 | Impulse measurement device and method based on plastic metal diaphragm and laser Doppler effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113670745A true CN113670745A (en) | 2021-11-19 |
Family
ID=78548045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111014882.3A Pending CN113670745A (en) | 2021-08-31 | 2021-08-31 | Impulse measurement device and method based on plastic metal diaphragm and laser Doppler effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113670745A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777585A (en) * | 2022-03-22 | 2022-07-22 | 中国工程物理研究院流体物理研究所 | Fixing device and method for measuring action time of detonator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044017A (en) * | 2014-06-06 | 2014-09-17 | 江苏大学 | Polishing method and device based on laser shock wave |
| CN111288913A (en) * | 2020-03-26 | 2020-06-16 | 西北核技术研究院 | Non-contact measurement method and system for deformation of double-layer cylinder under internal explosion effect |
-
2021
- 2021-08-31 CN CN202111014882.3A patent/CN113670745A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044017A (en) * | 2014-06-06 | 2014-09-17 | 江苏大学 | Polishing method and device based on laser shock wave |
| CN111288913A (en) * | 2020-03-26 | 2020-06-16 | 西北核技术研究院 | Non-contact measurement method and system for deformation of double-layer cylinder under internal explosion effect |
Non-Patent Citations (2)
| Title |
|---|
| 杨军等: "基于光子多普勒测速仪的冲量传感器", 兵工学报, no. 1, pages 150 - 154 * |
| 殷文骏等: "一种小比距离***下的冲量测量技术研究", 振动与冲击, vol. 39, no. 19, pages 130 - 134 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777585A (en) * | 2022-03-22 | 2022-07-22 | 中国工程物理研究院流体物理研究所 | Fixing device and method for measuring action time of detonator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Koohbor et al. | Investigation of the dynamic stress–strain response of compressible polymeric foam using a non-parametric analysis | |
| Luo et al. | The compressive behavior of isocyanate-crosslinked silica aerogel at high strain rates | |
| CN107860504B (en) | Accurate dynamic thrust of appearance accuse engine measures calibration integrated device | |
| CN105784238B (en) | A kind of measuring method and its system of material surface residual stress | |
| Fayyadh et al. | Combined modal parameters-based index for damage identification in a beamlike structure: theoretical development and verification | |
| CN105806203B (en) | A kind of three-dimensional relative displacement transducer | |
| CN211784189U (en) | Fluid motion measurement sensor device based on artificial tentacles | |
| CN109459178B (en) | Conjoined effect target device suitable for dynamic explosion field target shock wave pressure measurement | |
| CN113670745A (en) | Impulse measurement device and method based on plastic metal diaphragm and laser Doppler effect | |
| CN103411833A (en) | Instrumentation indentation test method for elastic-plastic parameters of material based on single Vickers pressure head | |
| CN108956122B (en) | Assembly quality detection method based on structural dynamics characteristics | |
| CN111077030A (en) | Device and method for testing dynamic mechanical properties of concrete under high strain rate | |
| CN106769550B (en) | Test device and method for tensile modulus of concrete under high strain rate | |
| CN105547235A (en) | Method for measuring pull-press and bending composite deformation field of variable cross section beam structure | |
| Nakatani et al. | Impact localization on a cylindrical plate by near-field beamforming analysis | |
| CN108953004B (en) | A kind of high-thrust rocket lateral force test predictor method | |
| CN103412053A (en) | Wave-velocity-free acoustic emission source locating method based on acoustic emission sensor arrays and wave beam formation | |
| CN112927185A (en) | True stress-true strain curve test calculation method based on digital image correlation method | |
| CN109459179B (en) | Monomer effect target device suitable for dynamic explosion field target shock wave pressure measurement | |
| Silva et al. | Stress field evolution under mechanically simulated hull slamming conditions | |
| Song et al. | Benchmark of residual stress for ultrasonic nondestructive testing | |
| CN110018050B (en) | Method for obtaining the modulus of elasticity of a plate-shaped component | |
| CN205262666U (en) | Wave slamming load measuring device | |
| CN201497604U (en) | Device for measuring friction between ship and chamber wall | |
| RU2555198C2 (en) | Bench for graduation of accelerometers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |