CN112027018A - Large-scale target model experimental apparatus of nuclear explosion under water - Google Patents
Large-scale target model experimental apparatus of nuclear explosion under water Download PDFInfo
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- CN112027018A CN112027018A CN202010891351.1A CN202010891351A CN112027018A CN 112027018 A CN112027018 A CN 112027018A CN 202010891351 A CN202010891351 A CN 202010891351A CN 112027018 A CN112027018 A CN 112027018A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
- B63B71/20—Designing vessels; Predicting their performance using towing tanks or model basins for designing
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Abstract
The invention provides an experimental device for a large underwater nuclear explosion target model, which comprises: the device comprises two buoys, four buoys, a damping plate, a connecting column, a cable, a target plate, a back empty water tank, transverse stabilizing plates and explosive, wherein the two buoys are fixed by the four transverse stabilizing plates; the damping plates are vertically arranged below the floating cylinder at a certain interval and are connected by connecting columns, and the damping plates are used for reducing the vertical swing amplitude of the floating cylinder when the floating cylinder is subjected to underwater nuclear explosion impact; the back empty water tank is positioned below the floating cylinder, and the lifting lugs of the floating cylinder and the target holder are connected by utilizing a lifting ring in the mooring rope; the target plate is positioned on the target holder, and the target plate and the target holder are fixed by using bolts; the explosive is arranged between the target plate and the buoy and in the four cables. The invention aims to research the impact damage of large pulse width shock waves generated by underwater explosion on a target plate, and further solve the problem of the damage characteristic of a ship structure caused by load under the action of large pulse width shock of underwater nuclear explosion on a ship.
Description
Technical Field
The invention relates to an experimental device, in particular to an experimental device for a large underwater nuclear explosion target model, and belongs to the technical field of design experiment tests of a model experiment target cabin.
Background
The accurate ship damage characteristic can provide accurate theoretical and numerical calculation and other basis for researching the ship in the aspects of antiknock and impact-resistant design and optimization. Although a great deal of scholars research on the impact damage of underwater explosion on ships and warships nowadays, a great deal of results are obtained. However, the damage characteristics of ships are still rarely studied in the aspect of underwater nuclear explosion.
Because the construction cost of the ship is higher, a large number of physical experiments can not be carried out on the ship. Therefore, a large number of scholars conduct scale reduction experiments on ships and study the mechanism of impact damage of underwater explosion on the ship body. However, simple model experiments cannot accurately reflect the structural characteristics and damage characteristics of actual ships. Therefore, a model technology and a device which accurately reflect the actual ship characteristics are needed to carry out experimental research on the damage characteristics of ships during underwater nuclear explosion.
Finally, an accurate and effective model method is urgently needed to be researched at present, and meanwhile, the damage of the large pulse width shock wave of the underwater explosion to the plate frame structure is researched by utilizing the model device, so that the characteristic that the underwater nuclear explosion large pulse width shock wave really damages ships is accurately obtained.
Disclosure of Invention
The invention provides an underwater nuclear explosion large-scale target model experimental device aiming at the problem of damage characteristics of large-pulse-width shock waves of underwater nuclear explosion on ships, is used for researching the simulated damage characteristics of the large-pulse-width shock waves of the underwater nuclear explosion on a plate frame structure, and aims to solve the problem of real-scale damage characteristics of the ships when the ships are subjected to the underwater nuclear explosion.
The purpose of the invention is realized as follows: the device comprises two floating barrels connected through a transverse stabilizing plate, a back empty water cabin, a target support fixed on the back empty water cabin, a target plate arranged on the target support, a rope used for connecting the back empty water cabin and the floating barrels, and explosives placed between the target plate and the floating bodies, wherein the target plate is a double-layer mixed type framework target plate, a single-layer longitudinal framework target plate or a single-layer mixed type framework target plate.
The invention also includes such structural features:
1. at least three layers of damping plates are arranged below two ends of each buoy respectively, and the damping plates and the buoys are connected through connecting columns.
2. The cable rope for connecting the back empty water tank and the buoy is as follows: two lifting lugs are arranged below each floating barrel, four lifting lugs are arranged on four corners of a target support on the back empty water tank respectively, and four rope pulling devices are vertically connected between the corresponding lifting lugs respectively.
3. The back empty water cabin comprises a gravel cabin and a back empty cabin, the back empty cabin and the gravel cabin are separated by an intermediate plate, and T-shaped beam reinforcing ribs are arranged on the wall surfaces of the gravel cabin, the back empty cabin and the intermediate plate.
4. The inner surface of each buoy is provided with a T-shaped beam reinforcing rib.
5. During experiment, the experimental device is placed in water, the two buoys float on the water surface, other components are positioned under the water according to the position relation, the distance between the back empty water tank and the buoys is adjusted according to the length of the mooring rope, and different types of plates are selected by the target plate according to the experiment requirements; the large pulse width shock wave generated by explosive explosion performs load impact action on the target plate, so that the damage characteristic of the target plate is obtained, the target plate and the back empty water tank jointly form a structure and an environment model of the cabin, and the damage characteristic of the ship structure with real scale can be obtained according to the damage characteristic of the target plate.
Compared with the prior art, the invention has the beneficial effects that: the invention can obtain the accurate and effective damage characteristic of the underwater nuclear explosion to the ship structure, and the invention carries out scale design according to the frame structure of the ship body real plate. The damping board group is formed to the polylith damping board at flotation pontoon both ends utilizes the spliced pole, and its effect is to increase additional mass power, can effectually reduce the upper and lower amplitude of oscillation of flotation pontoon, controls the rigid body motion displacement of whole device, reduces the influence of shock wave to the device. The cable is made of flexible materials, and the impact influence of instantaneous explosion on the buoy is reduced by utilizing the flexibility of the cable. The back empty cabin in the back empty water cabin provides an air environment for the target plate, and the environmental state of the ship in the ocean is accurately simulated. The gravel cabin in the back empty water cabin provides counter weight for the back empty water cabin, so that the method has economic and convenient effects, and compared with a direct uniform steel counter weight or a concrete structure counter weight, the method can prevent the layer crack effect caused by stress waves.
Drawings
FIG. 1(a) is a diagram showing the positional relationship between the pontoons, damping plates and connecting columns; FIG. 1(b) is a sectional view of the pontoon;
FIG. 2 is a schematic view of a cable and bail;
FIG. 3(a) is an external structural view of a double-layered target plate; FIG. 3(b) is a cross-sectional view of the internal structure of the double-layered target plate;
FIG. 3(c) is a single layer vertical skeleton target plate; FIG. 3(d) is a single layer hybrid scaffold target plate;
FIG. 4(a) is a schematic view of the whole back empty water tank; FIG. 4(b) is a sectional view of the internal structure of the back empty water tank;
FIG. 5 is a schematic view of a transverse stabilizer plate;
FIG. 6 is a schematic view of the working position of the present invention; the device is placed in water, the buoy floats on the water surface, and other devices are under water;
fig. 7 is a schematic view of the overall structure of the present invention.
In the figure: 1, a buoy; 101, lifting a lug; 102T-shaped reinforcing ribs; 3, a damping plate; 4, connecting columns; 5, mooring ropes; 501, hanging a ring; 6, target plate; 6-1 double-layer mixed type framework target plate; 6-2 single-layer longitudinal frame target plates; 6-3 single-layer mixed framework target plate; 601 target plate bolt holes; 602 a longitudinal skeleton; 603T-shaped reinforcing ribs; 604 a reinforced rigid frame skeleton; the 7 back empty water cabin consists of a 7-1 back empty cabin and a 7-2 gravel cabin; 701, backing off a target; 701-1, a target support lifting lug; 702 backing empty cabin side panels; 702-1T-shaped reinforcing ribs; 703 a gravel cabin plate; 703-1 intermediate plate; 8 transverse stabilizing plates; 9 explosive.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention discloses an experimental device for a large underwater nuclear explosion target model, which is combined with the accompanying drawings 1-7, and comprises the following specific structure, measurement process and method:
1. concrete structure of device
The invention comprises a buoy 1, a buoy 2 (the structures of the two buoys are completely the same), a damping plate 3, a connecting column 4, a cable 5, a target plate 6, a back empty water tank 7, a transverse stabilizing plate 8 and explosive 9 which are arranged from top to bottom in sequence. The buoy 1 and the buoy 2 are fixed between the four transverse stabilizing plates 8, four connecting columns 4 are arranged below two ends of each buoy, and the connecting columns 4 are mainly used for spacing the positions of the damping plates 3 and restraining the degrees of freedom of the damping plates. The abdomen of each buoy is provided with two lifting lugs 101, the two buoys form four lifting positions, and the lifting lugs 101 and the four lifting lugs 701-1 on the back empty water tank 7 are connected by using lifting rings 501 at the two ends of a mooring rope 5. The target plate 6 is positioned on a target holder 701 of the back empty water chamber 7. The target plate and the target holder are fixed by bolts. The relative positions of the explosive 9 between the target plate 6 and the floating cylinders 1 and 2 and between the four mooring ropes 5 and the back empty water tank 7 can be adjusted according to different experimental requirements.
The buoy 1 and the buoy 2 are connected by four transverse stabilizing plates 8 and are fixed in position between the four transverse stabilizing plates, and the function (1) of the buoy is to provide four hanging positions for the lower back empty water tank 7 and stably hang the back empty water tank in water. (2) Provides enough buoyancy and better simulates the environment of a ship. (3) The four inner walls of the pontoon are all provided with T-beam reinforcing ribs 102, and both ends are not provided with reinforcing ribs, so as to improve the strength and stability of the pontoon, as shown in fig. 1 (b).
As shown in fig. 1(a), four connecting columns 4 are arranged below two ends of each buoy, and the connecting columns 4 are mainly used for spacing the damping plates 3 and restricting the degrees of freedom of the damping plates. The damping plate is used for increasing additional mass force, the upper swing amplitude and the lower swing amplitude of the buoy can be effectively reduced, the rigid motion displacement of the whole device is controlled, and the influence of shock waves on the device is reduced. The abdomen of each buoy is provided with two lifting lugs 101, the two buoys form four lifting positions, and the lifting lugs 101 and the four lifting lugs 701-1 on the back empty water tank 7 are connected by using lifting rings 501 at the two ends of a mooring rope 5. The lifting lug 701-1 is welded at the four corners between the target holder 701 and the back empty water bin side plate 702.
The target plate 6 is positioned on a target holder 701 of the back empty water tank 7, and the target plate and the target holder are rigidly fixed by bolts. The target plate of the device of the invention has three types, namely a double-layer mixed framework target plate 6-1, as shown in figures 3(a) and (b); a single-layer vertical skeleton target plate 6-2, as shown in FIG. 3 (c); a single layer hybrid skeletal target plate 6-3, as shown in FIG. 3 (d); the longitudinal frame 602 on the target plate has the same structure as the T-shaped beam reinforcing rib 603. The purpose of the reinforcing ribs and the longitudinal frame is to improve the anti-explosion strength of the target plate. The double-layer mixed type framework target plate 6-1 comprises a target plate and an enhanced rigid frame 604, a target plate bolt hole 601 is formed in the target plate, and the enhanced rigid frame is additionally arranged around the target plate for connecting with a target support in a back empty water tank and achieving the purpose that the target plate is not replaced in multiple tests. The reinforced rigid frame 604 can increase the number of internal vertical and horizontal frameworks and T-beam stiffeners of the upper and lower panel walls according to the experimental strength requirements.
As shown in fig. 4(a) and (b), the back empty water tank 7 consists of a back empty tank 7-1, a gravel bin 7-2 and a target holder 701, T-shaped beam reinforcing ribs 702-1 are added on the plate walls in each part, and the structure and the size are the same, so that the anti-explosion strength of the back empty water tank is improved. The back empty cabin 7-1 consists of four back empty cabin side plates 702, provides an air environment for the target plate, and truly simulates the environment of a ship in seawater. The rubble cabin 7-2 is composed of five rubble cabin plates 703, provides counter weight for the back empty cabin, has economic and convenient effects, and can prevent the spalling effect caused by stress wave compared with direct uniform steel counter weight or concrete structure counter weight. In order to avoid interference experiments, the back empty cabin 7-1 and the gravel cabin 7-2 are separated by an intermediate plate 703-1, and T-shaped beam reinforcing ribs 702-1 are arranged on the upper surface and the lower surface.
As shown in fig. 5, the purpose of the transverse stabilizer plate 8 is to fix the position between the two pontoons and to constrain the rotational freedom of the pontoons and prevent them from overturning when subjected to an explosion. And two groups of T-shaped beam reinforcing ribs are added on one side of the transverse stabilizing plate 8, so that the anti-explosion strength of the transverse stabilizing plate is improved.
In order to avoid the influence of air bubbles generated in the explosion process on the target plate, the explosive 9 is placed between the target plate 6 and the buoys 1 and 2, and the relative positions between the four cables 5 and the back empty water tank 7 can be adjusted according to different experimental requirements, as shown in fig. 6.
2. Measuring process
As shown in FIG. 6, in the experiment, the device of the invention is placed in water, the two buoys float on the water surface, the target plate and other components are positioned under the water according to the position relationship, and the distance between the back empty water tank and the buoys can be adjusted according to the length of the mooring rope. Target plate different types of plates were selected according to experimental requirements.
The large pulse width shock wave generated by explosive explosion performs load impact action on the target plate, thereby obtaining the damage characteristic of the target plate. The target plate and the back empty water tank jointly form a structure and an environment model of the cabin, and the damage characteristic of the real scale of the ship structure can be obtained according to the damage characteristic of the target plate.
In summary, the invention relates to an experimental device for a large underwater nuclear explosion target model. The device simulates the structures and environments of ships and explosion fields and is mainly used for experimental research on the damage characteristics of large-pulse-width shock waves generated by underwater nuclear explosion on the ship structures. The device of the invention mainly comprises: the device comprises a buoy 1, a buoy 2, a damping plate 3, a connecting column 4, a mooring rope 5, a target plate 6, a back empty water tank 7, a transverse stabilizing plate 8 and explosive 9. The buoy 1 and the buoy 2 are fixed in position by four transverse stabilizing plates 8; the damping plates 3 are vertically arranged below the floating cylinders at certain intervals and are connected by connecting columns 4, and the damping plates are used for reducing the upper and lower swing amplitudes of the floating cylinders 1 and 2 when the floating cylinders are subjected to underwater nuclear explosion impact; the back empty water tank 7 is positioned below the buoy and is connected with the buoy and a lifting lug of the target holder 701 by a lifting ring in the mooring rope 5; the target plate is positioned on the target holder 701, and the target plate and the target holder are fixed by using bolts; in order to avoid the influence of air bubbles generated by explosion on the target plate in the experimental process, explosive 9 is placed between the target plate and the buoys 1 and 2 and in the four cables 5. The invention provides an experimental technology and device for a large underwater nuclear explosion target model, and aims to research the impact damage of large-pulse-width shock waves generated by underwater explosion on a target plate and further solve the problem of the damage characteristic of a ship structure caused by the load of a ship under the action of large-pulse-width impact of underwater nuclear explosion.
Claims (10)
1. The utility model provides a large-scale target model experimental apparatus of nuclear explosion under water which characterized in that: the device comprises two floating barrels connected through a transverse stabilizing plate, a back empty water cabin, a target support fixed on the back empty water cabin, a target plate arranged on the target support, a rope used for connecting the back empty water cabin and the floating barrels, and explosives placed between the target plate and the floating bodies, wherein the target plate is a double-layer mixed type framework target plate, a single-layer longitudinal framework target plate or a single-layer mixed type framework target plate.
2. The large-scale target model experimental device for underwater nuclear explosion according to claim 1, characterized in that: at least three layers of damping plates are arranged below two ends of each buoy respectively, and the damping plates and the buoys are connected through connecting columns.
3. The large-scale target model experimental device for underwater nuclear explosion according to claim 1 or 2, characterized in that: the cable rope for connecting the back empty water tank and the buoy is as follows: two lifting lugs are arranged below each floating barrel, four lifting lugs are arranged on four corners of a target support on the back empty water tank respectively, and four rope pulling devices are vertically connected between the corresponding lifting lugs respectively.
4. The large-scale target model experimental device for underwater nuclear explosion according to claim 1 or 2, characterized in that: the back empty water cabin comprises a gravel cabin and a back empty cabin, the back empty cabin and the gravel cabin are separated by an intermediate plate, and T-shaped beam reinforcing ribs are arranged on the wall surfaces of the gravel cabin, the back empty cabin and the intermediate plate.
5. The large-scale target model experimental device for underwater nuclear explosion according to claim 3, characterized in that: the back empty water cabin comprises a gravel cabin and a back empty cabin, the back empty cabin and the gravel cabin are separated by an intermediate plate, and T-shaped beam reinforcing ribs are arranged on the wall surfaces of the gravel cabin, the back empty cabin and the intermediate plate.
6. The experimental device for the large underwater nuclear explosion target model according to claim 5, characterized in that: the inner surface of each buoy is provided with a T-shaped beam reinforcing rib.
7. The large-scale target model experimental device for underwater nuclear explosion according to claim 1 or 2, characterized in that: during experiment, the experimental device is placed in water, the two buoys float on the water surface, other components are positioned under the water according to the position relation, the distance between the back empty water tank and the buoys is adjusted according to the length of the mooring rope, and different types of plates are selected by the target plate according to the experiment requirements; the large pulse width shock wave generated by explosive explosion performs load impact action on the target plate, so that the damage characteristic of the target plate is obtained, the target plate and the back empty water tank jointly form a structure and an environment model of the cabin, and the damage characteristic of the ship structure with real scale can be obtained according to the damage characteristic of the target plate.
8. The large-scale target model experimental device for underwater nuclear explosion according to claim 3, characterized in that: when in experiment, the experimental device is placed in water, the two buoys float on the water surface, other components are positioned under the water according to the position relation, the distance between the back empty water tank and the buoys is adjusted according to the length of the mooring rope, and different types of plates are selected by the target plate according to the experiment requirement; the large pulse width shock wave generated by explosive explosion performs load impact action on the target plate, so that the damage characteristic of the target plate is obtained, the target plate and the back empty water tank jointly form a structure and an environment model of the cabin, and the damage characteristic of the ship structure with real scale can be obtained according to the damage characteristic of the target plate.
9. The large-scale target model experimental device for underwater nuclear explosion according to claim 4, characterized in that: when in experiment, the experimental device is placed in water, the two buoys float on the water surface, other components are positioned under the water according to the position relation, the distance between the back empty water tank and the buoys is adjusted according to the length of the mooring rope, and different types of plates are selected by the target plate according to the experiment requirement; the large pulse width shock wave generated by explosive explosion performs load impact action on the target plate, so that the damage characteristic of the target plate is obtained, the target plate and the back empty water tank jointly form a structure and an environment model of the cabin, and the damage characteristic of the ship structure with real scale can be obtained according to the damage characteristic of the target plate.
10. The experimental device for the large underwater nuclear explosion target model according to claim 5, characterized in that: when in experiment, the experimental device is placed in water, the two buoys float on the water surface, other components are positioned under the water according to the position relation, the distance between the back empty water tank and the buoys is adjusted according to the length of the mooring rope, and different types of plates are selected by the target plate according to the experiment requirement; the large pulse width shock wave generated by explosive explosion performs load impact action on the target plate, so that the damage characteristic of the target plate is obtained, the target plate and the back empty water tank jointly form a structure and an environment model of the cabin, and the damage characteristic of the ship structure with real scale can be obtained according to the damage characteristic of the target plate.
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Cited By (1)
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Application publication date: 20201204 |