CN108750002A - The collision of ship ice simplifies calculating simulation device and analogy method in a kind of aqueous medium - Google Patents
The collision of ship ice simplifies calculating simulation device and analogy method in a kind of aqueous medium Download PDFInfo
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- CN108750002A CN108750002A CN201810327611.5A CN201810327611A CN108750002A CN 108750002 A CN108750002 A CN 108750002A CN 201810327611 A CN201810327611 A CN 201810327611A CN 108750002 A CN108750002 A CN 108750002A
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- ship
- ice
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- collision
- aqueous medium
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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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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses ship ice collisions in a kind of aqueous medium to simplify calculating simulation device, including water tank, liftable supporting rack is equipped in water tank, ice body model is placed on supporting rack, ship model is placed in water tank, and guide rail is equipped on water tank, guide rail is equipped with towing device, towing device is connect by traction truss with ship model, is equipped with pressure sensor on the top of ship, pressure sensor is connect with charge amplifier, multi-channel signal acquiring instrument and computer successively；By the mobile drive ship collision ice body model of towing device, to acquire crash data by pressure sensor.The present invention is under the premise of without using ice material, the high pressure load of different ice body shapes, ice body quality, stroke speed, impingement position, ship model floading condition and projected angle of impact can be carried out, the truth that preferably reflection ship and ice is hit, it is at low cost, easy to operate, risk is small.
Description
Technical field
The present invention relates to ship ice collisions in aqueous medium to simplify calculating simulation device and analogy method, belongs to ship domain.
Background technology
With the high speed development of economic construction of China, marine economy has become the new growing point of national economy, and the arctic is opened
The not only new strategy in China of opening up in hair and arctic navigation channel provides new guarantee, and shortens voyage time, but with
The extensive development of ocean development, Sea Ice Disasters problem, sea ice and the works for influencing offshore structures safety and operation are mutual
Problems in role becomes increasingly conspicuous.In polar region region, the ship of traveling inevitably collides with ice body, and ship ice collision itself is
One complicated non-linear process, one layer of difficulty of the collision of research ship ice and increase in aqueous medium.Current research is typically will
Aqueous medium is applied to the effect that water is considered on hull as additional mass, and neglects aqueous medium in ship-ice collision process
The influence of variation in water pressure.The strong impact force of the moment generated during ship ice contact-impact is no doubt that research ship-ice collides most
For the load to merit attention, in fact, in ship-ice near field approximate procedure before the contact of ship ice, water between ship ice due to
It is also an important factor for can not ignore to be generated a high pressure field of force in advance by the extruding between ship ice, and the pressure field is in hull
An instantaneous high pressure power load is produced in structure, the speed when being contacted using ship-ice ignores the pressure field pair as datum point
Hull is relatively dangerous.Also some scholar considers the effect of water by fluid structurecoupling, although modern computer is soft or hard
Part constantly upgrades, and fluid structurecoupling method spends a large amount of calculating time due to using finite volume method treatment fluid unit, needing,
It is about admittedly legal several times of non-streaming to calculate the time.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention to provide a kind of substitute vessel ice collision process
The pressure test device that middle water influences, the water pressure load of real-time monitoring ship and overall process hull collision area before ice collision,
And logarithm emulation is verified, shadow of the aqueous medium that realization is generated by ship-water-ice three unity couping to ship ice impact load
Sound is converted into hull impingement area preload, reaches decoupling purpose, while can be under the premise of without using ice material, can
Carry out the high pressure load of different ice body shapes, ice body quality, stroke speed, impingement position, ship model floading condition and projected angle of impact,
The truth that preferably reflection ship and ice is hit, it is at low cost, easy to operate, risk is small.
Technical solution：In order to solve the above technical problems, the collision of ship ice simplifies calculating simulation in a kind of aqueous medium of the present invention
Device, including water tank, water tank is interior to be equipped with liftable supporting rack, and ice body model is placed on supporting rack, ship model is placed in water tank,
Guide rail is equipped on water tank, guide rail is equipped with towing device, and towing device is connect by traction truss with ship model, on the top of ship
End is equipped with pressure sensor, and pressure sensor is connect with charge amplifier, multi-channel signal acquiring instrument and computer successively；Pass through
The mobile drive ship collision ice body model of towing device, to acquire crash data by pressure sensor.
Preferably, the ship model is equipped with protective device, protective device is L-type part, and one end is fixed on traction truss,
The other end is located on front side of bow.
Preferably, being additionally provided with fishing device in the water tank, fishing device includes foam and cord, and foam passes through cord
It is connect with ice cube model.
Preferably, the outside plate that the pressure sensor is mounted on ship model is hit in the reserved aperture of surrounding, glass is used in combination
Glue fixing seal.
Preferably, the non-impact face of the ice body model is designed with trepanning.
Preferably, support frame as described above is more than ship by fixed frame, support platform and lifter group at, fixed frame width
Mould Breadth degree is highly less than trailer, and frame both sides are furnished with nut, and elevating lever is screwed rod iron.
The collision of ship ice simplifies the analogy method of calculating simulation device in a kind of above-mentioned aqueous medium, includes the following steps：
1) supporting rack is put in pond centre position, then ice body model is placed on supporting rack, adjustment supporting rack is held
Distance of the section away from basin bottom wall, it is ensured that ice body 80% is submerged in the water surface hereinafter, finally adjusting ice body on supporting rack loading end
Model determines projected angle of impact and impingement position；
2) ship model is put into pre-installed position, adjusts its drinking water, traction truss fixes ship model and trailer is fixed；
3) start trailer, ship model will hit ice body to set impact velocity, and trailer brakes stop, gathered data.
Advantageous effect：Compared with prior art, the present invention has the following advantages：
1) realize that the influence of the aqueous medium that is generated by ship-water-ice three unity couping to ship ice impact load is converted into pair
Hull impingement area preload, reaches decoupling purpose, and ship-ice to carry out overall process collides numerical simulation and provides accurate load
Input.
2) under the premise of without using ice material, different ice body shapes, ice body quality, stroke speed, shock can be carried out
Position, ship model floading condition and projected angle of impact model test, preferably reflect the truth that ship and ice are hit, at low cost, easy behaviour
Work, risk are small.
3) present invention need not realize that hull contacts ice body model, and protective device avoids ship model from hitting ice body model, only needs
Ice body model attitude is adjusted after salvaging can carry out next working condition experimenting.
4) the non-impact face trepanning of ice body allows the quick submerged of ice body model.
5) supporting rack can adjust height according to ice body model, meet experiment necessary requirement.
Description of the drawings
Fig. 1 is ship ice model tank experimental provision side view of the present invention；
Fig. 2 is ship ice model tank experimental provision A-A sectional views of the present invention；
Fig. 3 is the schematic diagram of information collecting device；
In figure：1 ship model, 2 towing devices, 3 protective devices, 4 ice body models, 5 supporting racks, fishing device 6 and the acquisition of 7 data
System, 2-1 trailers, 2-2 tractions truss, 5-1 fixed frames, 5-2 support platforms, 5-3 elevating levers, 6-1 nylon ropes, 6-2 foams,
7-1 pressure sensors, 7-2 charge amplifiers, 7-3 multi-channel signal acquirings instrument, 7-4 computers.
Specific implementation mode
Such as attached drawing 1 to the reality that shown in Fig. 3, the simplified calculating simulation device of ship ice collision uses in a kind of aqueous medium of the invention
Experiment device is ship model 1, towing device 2, protective device 3, ice body model 4, supporting rack 5, fishing device 6 and data collecting system 7.
In the present invention, the position that ship ice collides in aqueous medium is mainly the shoulder of stem and hull, and ship model uses
The stem model that fiberglass (FRP) collocation PVC expansion sheet is processed according to real ship reduced scale, towing device includes trailer 2-1, traction truss
2-2, the traction truss fix ship model and trailer, and the protective device is with the plank of L-type, and one end is fixed on traction purlin
On frame, the other end is located on front side of bow, and the ice body model is the hollow can that steel plate is processed into, and support frame as described above is scalable
Supporting rack, the fishing device are nylon rope 6-1 and foam 6-2, and nylon rope one end ties up on ice body model, and one end ties up to foam
On.The data acquisition device is pressure sensor 7-1, charge amplifier 7-2, multi-channel signal acquiring instrument 7-3, computer 7-
4, the pressure sensor is fixed on ship model surface point position by glass cement, collects the charge amplification of pressure sensor signal
Device, multi-channel signal acquiring instrument and computer are on trailer.Supporting rack by fixed frame, support platform and lifter group at, Gu
To determine frame width and be more than ship model width, is highly less than trailer, frame both sides are furnished with nut, and elevating lever is screwed rod iron,
Support platform is equipped with lifting nut, and the both sides of support platform are equipped with boss, are equipped on fixed frame and are oriented to groove, elevating lever
Coordinate with lifting nut, by the rotation of elevating lever to drive moving up and down for support platform.
The collision of ship ice simplifies the specific steps of the analogy method of calculating simulation device in a kind of aqueous medium：
1) retractable support frame is put in pond centre position, then ice body model is placed into retractable support frame,
Distance of the expansion bracket loading end away from basin bottom wall is adjusted, so that it is guaranteed that ice body 80% is submerged in the water surface or less.Finally
Ice body model is adjusted on supporting rack loading end determines projected angle of impact and impingement position；
2) ship model is put into pre-installed position, adjusts its drinking water, traction truss fixes ship model and trailer is fixed；
3) start trailer, ship model will hit ice body with impact velocity, at this point, ice body model is contacted one step ahead by protective device
It sinks under the water, trailer brakes stop, gathered data.
4) salvage ice body model, replace ice body shape, ice body size, adjustment stroke speed, impingement position, ship model floading condition with
And projected angle of impact, carry out striking experiment again according to experimental procedure.
Claims (7)
1. the collision of ship ice simplifies calculating simulation device in a kind of aqueous medium, it is characterised in that：Being equipped with including water tank, in water tank can rise
The supporting rack of drop places ice body model on supporting rack, ship model is placed in water tank, guide rail is equipped on water tank, and guide rail is equipped with
Towing device, towing device are connect by traction truss with ship model, and pressure sensor, pressure sensor are equipped on the top of ship
It is connect successively with charge amplifier, multi-channel signal acquiring instrument and computer；Pass through the mobile drive ship collision of towing device
Ice body model, to acquire crash data by pressure sensor.
2. the collision of ship ice simplifies calculating simulation device in aqueous medium according to claim 1, it is characterised in that：The ship model
It is equipped with protective device, protective device is L-type part, and one end is fixed on traction truss, and the other end is located on front side of bow.
3. the collision of ship ice simplifies calculating simulation device in aqueous medium according to claim 1, it is characterised in that：The support
Frame is by fixed frame, support platform and lifter group at fixed frame width is more than ship model width, is highly less than trailer, frame
Both sides are furnished with nut, and elevating lever is screwed rod iron.
4. the collision of ship ice simplifies calculating simulation device in aqueous medium according to claim 1, it is characterised in that：The water tank
It is inside additionally provided with fishing device, fishing device includes foam and cord, and foam is connect by cord with ice cube model.
5. the collision of ship ice simplifies calculating simulation device in aqueous medium according to claim 1, it is characterised in that：The pressure
The outside plate that sensor is mounted on ship model is hit in the reserved aperture of surrounding, and glass cement fixing seal is used in combination.
6. the collision of ship ice simplifies calculating simulation device in aqueous medium according to claim 1, it is characterised in that：The ice body
The non-impact face of model is designed with trepanning.
7. the collision of ship ice simplifies the simulation side of calculating simulation device in a kind of such as claim 1 to 6 any one of them aqueous medium
Method, which is characterized in that include the following steps：
1) supporting rack is put in pond centre position, then ice body model is placed on supporting rack, adjust supporting rack loading end
Distance away from basin bottom wall, it is ensured that ice body 80% be submerged in the water surface hereinafter, finally on supporting rack loading end adjust ice body model,
Determine projected angle of impact and impingement position；
2) ship model is put into pre-installed position, adjusts its drinking water, traction truss fixes ship model and trailer is fixed；
3) start trailer, ship model will hit ice body to set impact velocity, and trailer brakes stop, gathered data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810327611.5A CN108750002B (en) | 2018-04-12 | 2018-04-12 | Simplified calculation simulation device and simulation method for ship ice collision in aqueous medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810327611.5A CN108750002B (en) | 2018-04-12 | 2018-04-12 | Simplified calculation simulation device and simulation method for ship ice collision in aqueous medium |
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| CN108750002A true CN108750002A (en) | 2018-11-06 |
| CN108750002B CN108750002B (en) | 2020-03-31 |
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| CN201810327611.5A Active CN108750002B (en) | 2018-04-12 | 2018-04-12 | Simplified calculation simulation device and simulation method for ship ice collision in aqueous medium |
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Cited By (5)
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| CN110095254A (en) * | 2019-06-11 | 2019-08-06 | 江苏科技大学 | A kind of Novel ankle ice collision tank experiments device |
| CN110282076A (en) * | 2019-08-05 | 2019-09-27 | 江苏科技大学 | A kind of Novel ice cracking and marine structure continuously collide tank experiments device |
| US20210108986A1 (en) * | 2019-01-05 | 2021-04-15 | Dalian University Of Technology | Method of Ship Ice Resistance Model Experiment Based on Non-refrigerated Model Ice |
| CN112660324A (en) * | 2021-01-07 | 2021-04-16 | 中国海洋大学 | Method for estimating tension extreme value of tension leg platform under action of shear waves |
| CN114212210A (en) * | 2021-12-08 | 2022-03-22 | 中国船舶重工集团公司第七一九研究所 | Guarantee system for simulating real ship working condition of ship system and test method |
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| CN110282076A (en) * | 2019-08-05 | 2019-09-27 | 江苏科技大学 | A kind of Novel ice cracking and marine structure continuously collide tank experiments device |
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| CN108750002B (en) | 2020-03-31 |
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Effective date of registration: 20211216 Address after: 225453 Hongqiao Industrial Park, Taixing City, Taizhou City, Jiangsu Province Patentee after: JIANGSU YANGZIXINFU SHIPBUILDING Co.,Ltd. Address before: 212003, No. 2, Mengxi Road, Zhenjiang, Jiangsu Patentee before: JIANGSU University OF SCIENCE AND TECHNOLOGY |
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