CN109436197A - Interior estimates act on coupled motions and the dynamometry experimental system for simulating of lower ocean floating structure - Google Patents
Interior estimates act on coupled motions and the dynamometry experimental system for simulating of lower ocean floating structure Download PDFInfo
- Publication number
- CN109436197A CN109436197A CN201811283333.4A CN201811283333A CN109436197A CN 109436197 A CN109436197 A CN 109436197A CN 201811283333 A CN201811283333 A CN 201811283333A CN 109436197 A CN109436197 A CN 109436197A
- Authority
- CN
- China
- Prior art keywords
- anchor chain
- floating structure
- model
- dynamometry
- act
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B79/00—Monitoring properties or operating parameters of vessels in operation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The present invention discloses coupled motions and the dynamometry experimental system for simulating that a kind of interior estimates act on lower ocean floating structure, including floating structure model, motor imagination recording unit, anchor chain unit and anchor chain load cell, motor imagination and stress on anchor chain situation that interior estimates act on lower floating structural model can be recorded in real time；Floating structure model includes main platform body, movement measuring device mounting portion and counterweight, mutually indepedent between each section, facilitates installation, and it is also relatively convenient to increase and decrease counterweight；Motor imagination recording unit is combined using microelectronics gyroscope and micro-electronics acceleration meter, it is high, small in size with measurement accuracy, the advantages such as at low cost can not only accurately measure the motor imagination of floating structure, can also be by obtaining resultant force suffered by it to acceleration analysis suffered by platform；In addition, anchor chain dynamometry is carried out by fiber bragg grating, not only obtain the distribution characteristics of stress on anchor chain, additionally it is possible to which, by the different bending situations for understanding anchor chain of fiber bragg grating ess-strain, the building and implementation of the experimental system are of great significance for the stability study of floating structure.
Description
Technical field
The present invention relates to offshore floating type structural test equipment technical fields, and in particular to a kind of lower ocean of interior estimates effect
The coupled motions of floating structure and dynamometry experimental system for simulating.
Background technique
Internal wave of ocean is to betide a kind of seawater surface wave below, is a kind of gravitational wave, or is interior inertia
Gravitational wave.Recent decades, various countries experts and scholars are a kind of non-in ocean by actual measurement or remote sensing observation discovery, interior wave
The natural phenomena usually seen.The wave-length coverage of interior wave is generally differed from several hundred rice to tens kms in ocean, period from a few minutes
To a few houres etc..In the seawater of continuous stratification, the density gradient that cold water, hot water or fresh water, salt water generate is usually
It is smaller, but just because of this density gradient very little, disturbance needed for causing the catenary motion of layering interfaces Shanghai water particle
With regard to very little.Briefly, the disturbance of foot may form interior wave in the sea area that density of sea water is layered, also just because of formation
The disturbance very little that interior wave needs, the amplitude of interior wave would generally specific surface wave it is much larger, generally from several meters to rice up to a hundred etc., at present
The maximum Internal wave amplitude of observation is 180m.
Seawater catenary motion caused by interior wave is most important to energy transport in Yu Haiyang, it can be by the energy of marine superstructure
Deep layer is reached, and the colder seawater of deep layer is taken to relatively warm shallow-layer together with nutriment, promotes multiplying and living for marine organisms.It is interior
Waveguide causes the fluctuation of seawater isopycnic surface, influences the size and Orientation uniformity of the velocity of sound, the influence to sonar is very big, this is also advantageous
It is underwater hidden in submarine.But interior wave also has its harmful one side, Nei Bo can make Offshore Units as surface wave
At influence, interior wave also suffers from apparent influence, especially interior estimates to boat trip and navigation of submarine.The wave of interior estimates
For long range from tens kms to several hundred kms etc., nonlinear characteristic is very strong, and period of change is in several hours, space scale
Several hundred rice are to several kms etc..It is believed that interior estimates can cause a degree of influence to ocean platform, due to interior isolated
The reason that wave wave causes flow velocity upper and lower level opposite, often generating powerful shearing force to the standpipe of ocean platform, column causes it
Damage or failure are likely to cause the inclination of platform, topple since interior estimates wave causes flow velocity larger, generate serious
Consequence.
Chinese " offshore oil 981 " platform comes into operation within 2012, indicates that China has 3000m ultra-deep sea and surveyed
The ability for developing marine oil and gas is visited, marine petroleum exploitation deployment of the China at the South Sea is also increasing, and coming 10 years, China will add
Petroleum resources in big sea frontier zone, focus development depth are greater than the deep-sea and ultra-deep sea area of 500m.And including such as South Sea
Deep-sea sea area, due to density of sea water stratification, surface tide and it is interior tide from deep-sea into shallow sea traveling process, by South Sea Lv Songhai
Gorge sea wall undulating topography influences, it is easy to the biggish interior estimates of amplitude is formed, so that the mining operations to offshore oil cause
Certain danger.1987, research team suffered from powerful interior estimates, has made when design flows flower offshore platform
At the platform damage in installing.2006, Discoverer534 platform carried out meeting with interior wave when well cementing operation, by force
Big interior wave current causes platform lateral displacement excessive, and the starting of emergency release program causes well cementation to fail.The South Sea is deep on one's own account within 2013
Powerful interior wave is met with during well drilling platforms operation, causes platform drift 49m.And interior wave is unlike gas such as surface wave and typhoons
As the so easy observation of disaster, often it will occur or occur just to be noticeable later.This is but also wave is flat to ocean in studying
The influence of platform motor imagination becomes particularly important.
Six-freedom motion response, traditional experiment can occur under interior estimates and anchor chain unit collective effect for floating structure
Method is difficult to capture the kinetic characteristic of platform and the real-time active force of anchor chain unit, acts on lower floating for interior estimates at present
The experimental study of structure motion response is almost nil, and existing research is mostly stress experiment and the theory meter of fixed platform model
It calculates.For example, the Song Zhijun of Dalian University of Technology, which acts on lower floating structure motion response to interior estimates, has carried out theory analysis, on
The outstanding cloud of extra large university of communications it is auspicious it is equal the wave force that lower floating structure is subject to acted on to interior estimates carried out Experimental Research, but for
The experimental study that interior estimates act on lower floating structural response is rarely reported.
It is incomplete in view of current research and experimental facilities, and study movement of the floating structure under interior estimates effect
Response is again particularly significant.Therefore, for solve floating structure interior estimates act on lower platform forms of motion simulation, record and
The technical issues of anchor chain power measures, motor imagination of the research floating structure under interior estimates effect, it would be highly desirable to propose lonely in one kind
Vertical wave acts on coupled motions and the dynamometry experimental system for simulating of lower ocean floating structure.
Summary of the invention
The present invention is to study floating structure under experimental situation to act on lower platform motor imagination problem in interior estimates, is proposed
A kind of interior estimates act on coupled motions and the dynamometry experimental system for simulating of lower ocean floating structure.
The present invention, which is that the following technical solution is employed, to be realized: a kind of interior estimates act on the coupling of lower ocean floating structure
Movement and dynamometry experimental system for simulating, including experimental tank, floating structure model, motor imagination recording unit, anchor chain unit and
The center of gravity of floating structure model, floating structure model and anchor is arranged in anchor chain load cell, the motor imagination recording unit
Chain element is connected to realize and fix to it, and anchor chain load cell is connected with anchor chain model；
The floating structure model successively includes main platform body module, motor imagination recording unit installation module from top to bottom
With counterweight module, connected between main platform body module, motor imagination recording unit installation module and counterweight module by thread seal
It connects, three's modularized design is easy to combine installation, facilitates adjustment counterweight；
The motor imagination recording unit includes microprocessor and the microelectronics gyroscope being connected with microprocessor, micro- electricity
Sub- accelerometer, wireless transport module and power module, microelectronics gyroscope is to acquire floating structural model under body coordinate system
Rolling, pitching and yawing information, swaying, surging of the microelectronics accelerometer to acquire floating structural model under body coordinate system
With heaving and its three received strength information, the origin of the body coordinate system is located at the position of centre of gravity of floating structure model, along interior isolated
The direction of propagation of wave is Xt axis, and vertical direction is Zt axis straight up, and Yt axis is determined according to the right-hand rule, microelectronics gyroscope and
The information of acquisition is transmitted to microprocessor and pre-processed by microelectronics accelerometer, obtains the athletic posture number of floating structure model
According to being then uploaded to that host computer carries out data record and processing is analyzed through wireless transport module, and obtain motor imagination as a result, adopting
It is combined with microelectronic sensor and wireless module, floating structure model sport situation can be recorded in high precision, and can be real-time
It is wirelessly transferred motor message；
The anchor chain unit includes anchor chain model and gravity weight object, the anchor chain model to simulate practical anchor chain by
Power, the gravity weight object uses lead, to simulate the anchor connection of anchor chain；The anchor chain load cell includes optical fiber Bragg light
One end of grid connecting line and fiber grating demodulation device, the fiber bragg grating connecting line is connected with anchor chain model, the other end
It is connected with fiber grating demodulation device, to measure the wavelength change propagated in anchor chain model by fiber grating demodulation device, with light
Fine Bragg grating for strain sensitive characteristic, according to the relation property of ess-strain calculate anchor chain suffered by tensile stress.
Further, the anchor chain model uses fiber grating, and the surface of fiber grating is provided with coat, the coating
Layer is made of flexible material, and according to different coating material and coating thickness, the fiber grating with coat after processing can
To meet more anchor chain stress measurement requirement of experiment.
Further, the anchor chain model uses flexible material production to simulate practical anchor chain stress, anchor chain model
Surface be embedded with fiber bragg grating, the fiber bragg grating is arranged along the length direction of anchor chain model, and along anchor
The circumferencial direction of chain model is uniformly distributed more.
Further, the flexible material is nylon, polyethylene, polypropylene or polyvinyl chloride, to increase its Young's modulus,
To achieve the effect that increase stress measurement range.
Further, the fiber bragg grating successively includes optical fiber, interior wrapping layer and outer casing, edge from the inside to the outside
Fiber length is equidistantly laid with grating, and anchor chain model stress generates strain, and the spacing between grating becomes larger, to back wave
Wavelength can also change, the variation tendency of central wavelength is transmitted to by fiber grating demodulation device by anchor chain load cell,
It can be concluded that the strain that anchor chain model is generated due to stress, according to ess-strain transforming relationship it can be concluded that answering of being subject to of anchor chain
Power, and the differently strained Bending Deformation for calculating anchor chain of multifiber Bragg grating can be passed through.
Further, it is provided with multistage grating on the optical fiber, uses the optical fiber with multistage grating as anchor chain dynamometry member
Part can measure the distribution of force on anchor chain.
Further, the interior estimates in the experimental tank are produced by gravitational collapse method, are existed to eliminate interior estimates
Encounter when wall is consolidated in experimental tank end and generate back wave, wave absorber is additionally provided in experimental tank, with guarantee experiment it is normal into
Row.
Compared with prior art, the advantages and positive effects of the present invention are:
Scheme proposed by the invention includes floating structure model, motor imagination recording unit, anchor chain unit and anchor chain
Load cell can record motor imagination and stress on anchor chain situation that interior estimates act on lower floating structural model in real time, wherein
Floating structure model includes main platform body, movement measuring device installation section and counterweight, mutually indepedent between each section, facilitates peace
Movement measuring device is filled, increase and decrease counterweight is also relatively convenient；Motor imagination recording unit is added using microelectronics gyroscope and microelectronics
Speedometer combines, and has measurement accuracy height, advantage small in size, at low cost, can not only accurately measure the fortune of floating structure
Dynamic response, furthermore, it is possible to obtain resultant force suffered by platform by carrying out analysis to acceleration suffered by platform；In addition, passing through optical fiber cloth
Glug grating carries out anchor chain dynamometry, not only the distribution characteristics of available stress on anchor chain, additionally it is possible to pass through fiber bragg grating
The different bending situations for obtaining anchor chain each section stress condition and anchor chain of ess-strain, grind the stability of floating structure
Study carefully and is of great significance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of experimental system described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of floating structure model in Fig. 1；
Fig. 3 is the cross-sectional view of fiber bragg grating connecting line in Fig. 1；
Fig. 4 is the structural schematic diagram of fiber bragg grating in Fig. 3；
Specific embodiment
In order to which the above objects, features and advantages of the present invention is more clearly understood, with reference to the accompanying drawing and implement
The present invention will be further described for example.It should be noted that in the absence of conflict, in embodiments herein and embodiment
Feature can be combined with each other.
Embodiment, a kind of interior estimates act on coupled motions and the dynamometry experimental system for simulating of lower ocean floating structure, such as
Shown in Fig. 1, in Fig. 15 indicate upper water column, 6 indicate lower water columns, 7 indicate interior estimates, in order to guarantee experiment it is normal into
Row, avoiding experimental result by interior estimates, the roundtrip in experimental tank is influenced, and is additionally provided with wave absorber in experimental tank 9
8, back wave is generated to eliminate interior estimates when encountering 9 end of experimental tank and consolidating wall.Specifically, the experimental system for simulating includes floating
Formula structural model 1, motor imagination recording unit 2, anchor chain unit 3 and anchor chain load cell 4, motor imagination recording unit 2 are arranged
In the center of gravity of floating structure model 1, floating structure model 1 is connected with anchor chain unit 3, is fixed with realizing to it, the anchor chain
Load cell 4 is connected with anchor chain unit 3；As shown in Fig. 2, the floating structure model 1 successively includes main platform body from top to bottom
Module 11, motor imagination recording unit installation module 12 and counterweight module 13, main platform body module 11, motor imagination recording unit
It is connected through a screw thread between installation module 12 and counterweight module 13, three's modularized design is easy to combine installation, adjustment is facilitated to match
Weight, the floating structure model 1 after connection meets waterproof requirement, and floating structure model can bubble through the water column, and center of gravity passes through tune
Whole counterweight module achievees the effect that scaling position with actual platform center of gravity is overlapped, and the draft and reality of floating structure model
Platform draft scale location also coincide, to guarantee the reference value of experimental data.
Wherein, motor imagination recording unit 2 includes microprocessor and the microelectronics gyroscope, micro- that is connected with microprocessor
Electronics accelerometer, wireless transport module and power module, microelectronics gyroscope is to acquire floating structural model under body coordinate system
Rotation information, i.e. the rolling, pitching and yawing information of floating structure model；The microelectronics accelerometer is to adopt collective coordinate
It is the translational motion and stress condition of lower floating structural model, the i.e. swaying, surging and heaving and its three-dimensional of floating structure model
Stress.Initial data measured by microelectronics gyroscope and micro-electronics acceleration instrument is respectively angular acceleration and linear acceleration,
If it is intended to obtaining angle and displacement information, it is necessary to be processed and be handled to initial data, is i.e. microelectronics gyroscope and micro-
The information of acquisition is transmitted to microprocessor and pre-processed by electronics accelerometer, obtains the athletic posture number of floating structure model
According to being then uploaded to that host computer carries out data record and processing is analyzed through wireless transport module, and obtain motor imagination result.
The anchor chain unit 3 includes anchor chain model 32 and gravity weight object 31, and the anchor chain model 32 uses fiber grating
(including optical fiber and grating, be equidistantly laid with grating along the part of fiber length), and be arranged on the surface of fiber grating
Coat, to increase its Young's modulus, to achieve the effect that increase stress measurement range.According to different coating materials and painting
Thickness is covered, the fiber grating with clad after processing can satisfy more anchor chain stress measurement requirement of experiment, to guarantee
Its flexibility is sufficiently large and has certain intensity, rigidity and endurance, and the coat is using the flexible material met the requirements
Production, for example, nylon, polyethylene, polypropylene or polyvinyl chloride etc., the gravity weight object 31 uses lead, is existed with simulating anchor chain
The anchor connection in seabed；The anchor chain load cell 4 includes fiber bragg grating connecting line 41 and fiber grating demodulation device 42,
One end of the fiber bragg grating connecting line 41 is connected with anchor chain model, and the other end is connected with fiber grating demodulation device 42,
Fiber grating demodulation device is to measure the wavelength change propagated in optical fiber.
In addition, also anchor chain model can be arranged to following form to measure anchor chain bending situation: being used in anchor chain model
The flexible material production met the requirements, and it is embedded fiber bragg grating 44 on its surface, as shown in Figure 3 and Figure 4, the optical fiber
Bragg grating 44 is arranged along the length direction of anchor chain model 32, and along its it is circumferential it is uniformly distributed have more, the present embodiment is preferred
Using three fiber bragg gratings 44, fiber bragg grating 44 is embedded in the surface of anchor chain model, the optical fiber Bragg
Grating 44 passes through special designing in this programme, as shown in figure 4, fiber bragg grating 44 successively includes optical fiber from the inside to the outside
48, interior wrapping layer 47 and outer casing 45 are laid with grating 46 along 48 equal spacing in length direction of optical fiber.Due to optical fiber Bragg light
Grid are generally used for measurement object and strain, and determine fiber bragg grating by carrying out stress calibration experiment to it in the present embodiment
Stress-strain characteristics, finally stress result is converted by the strain result measured according to its stress-strain characteristics, when anchor chain mould
32 stress of type generates strain, and the spacing between grating 46 becomes larger, can also change to the wavelength of back wave, pass through anchor chain dynamometry
The variation tendency of central wavelength is transmitted to fiber grating demodulation device 42 by unit, it can be deduced that anchor chain model is generated due to stress
Strain, according to ess-strain transforming relationship it can be concluded that the stress that anchor chain is subject to.
From fig. 4, it can be seen that multistage grating 46 can be carried on same section of optical fiber 48, made with the optical fiber with multistage grating
The distribution of force on anchor chain can be measured for anchor chain load-sensing unit.
In addition, in the present embodiment, when carrying out motor imagination analysis to it by motor imagination recording unit, due to microelectronics
Basic data measured by accelerograph is acceleration, therefore wants to obtain the displacement information of platform movement, it is necessary to acceleration
Time series carries out numerical integration twice, and the error generated in integral process is modified by specific numerical algorithm, to
Obtain accurate displacement information.Then, also the displacement information under body coordinate system can be converted into the earth by coordinate transform
Displacement information under coordinate system, the earth coordinates and body coordinate system are indicated with Xg, Yg, Zg and Xt, Yt, Zt respectively, wherein
Geodetic coordinates origin is located at one jiao of trench bottom of experiment, is Xg axis along the direction of propagation of interior estimates, vertical direction is straight up
For Zg axis, Yg axis determines that each point geodetic coordinates is positive value in such experimental tank, convenient for subsequent calculating according to the right-hand rule.
The origin of body coordinate system is located at the position of centre of gravity of floating structure model, and when original state is equally Xt axis along interior direction of wave travel,
It is straight up Zt axis along vertical direction, Yt axis can be determined according to the right-hand rule, and during the test, body coordinate system can be with floating
Formula structural model moves together.
Formula of Coordinate System Transformation are as follows:
In formula, xg, yg, zgRespectively earth coordinates longitudinally, laterally with it is vertical, ψ is yaw angle, and θ is pitch angle, and φ is
Roll angle, xt, yt, ztFor under body coordinate system longitudinally, laterally with it is vertical.
The initial data that microelectronics gyroscope is recorded is the angular acceleration under body coordinate system, need to carry out numerical integration twice
The attitude angle variation of floating structure model can be obtained, data processing method is not necessarily to carry out coordinate with microelectronics accelerometer
Transformation is made a concrete analysis of as follows:
1. numerical filtering filters trap signal noise using FIR:
(1) design of FIR (finite impulse response) filter
List entries is expressed as xk, output data is expressed as yk, then the input and output difference equation of Finite Impulse Response filter,
Relationship i.e. between input and output can indicate are as follows:
Wherein, hnBe one group of conversion coefficient, the i.e. weight function of filter: n is ordinal number, and L is the length of filter.
The design method of digital filter window function is also known as Fourier space method, usually first gives required ideal filter
The response frequency H of wave deviced(ejω), design a FIR filter frequency responseTo approach Hd(ej ω).But design is carried out in time domain, therefore, first by Hd(ejω) Fourier inversion export hd(n):
Because being rectangular frequency characteristic, therefore hdIt (n) must be Infinite Sequences, and in FIR filter, h (n) necessarily has
Limit for length's, therefore approach with time-limited h (n) h of endlessd(n), most effective method is truncation hd(n), it uses in other words
The window function sequences h of one finite lengthd(n) it intercepts, both sides relation may be expressed as:
H (n)=w (n) hd(n)
(2) there is adoptable window function in analysis method described in the present embodiment:
Rectangular window
W (n)=RN(n)
Triangular window
Hanning window
Hamming window
(2) Integral Processing is carried out to obtain displacement information to acceleration value:
Defining acceleration signal measured by microelectronics gyroscope is a (t), then carries out a time-domain integration to it and obtain speed
Signal, expression formula are
Acceleration is by the available displacement signal of time-domain integration twice:
V in formula0And s0Respectively tested speed and position of the floating body at the time of time is zero, v (t) and s (t) are quilt
The speed and displacement of floating body are surveyed, V (t) and S (T) are the original function of speed and displacement.
(3) trending is carried out to integral result to handle, reduce numerical integration error:
During actual measurement, error term ε is inevitably generated, so having the acceleration signal of error term
Are as follows:
A (t)=areal(t)+ε
Time-domain integration twice is carried out to it can respectively obtain speed signal and displacement signal comprising error term:
δ and η is the constant that error term generates after integral in formula, and the Error Trend item that first time time-domain integration generates is
(εt+δ)+v0；The Error Trend item generated when volume integration at twice is
Using multinomial come fitted trend item in this programme, and then eliminate the mistake that acceleration signal generates in integral process
Poor enlargement phenomenon is come to carry out numerical integration to original acceleration signal according to compound trapezoidal formula, is defined as follows:
V (i)=v (i-1)+[a (i)+a (i-1)]/(2fs) (i=1,2 ... n-1；v0)
Therefore a trend term may be expressed as:
ε(i/fs)+(δ+v0)
Displacement signal may be expressed as:
S (k)=s (k-1)+[v (k)+v (k+1)]/(2fs) (k=1,2 ... n-1；s0=0)
And then derive second order error trend term expression formula:
ε(i/fs)2/2+(δ+v0)(i/fs)+(η+s0)
Numerical integration obtains speed and time strong point is (ti, vi) (i=0,1,2...n-1).
Assuming that polynomial fitting are as follows:
P in formulakFor polynomial coefficient；The function set that multinomial for all numbers no more than m forms, for this purpose, needing
Find out pk, and polynomial fitting is made to reach minimum:
It enables
It can obtainBy that can be obtained to Matrix SolvingIt carries out primary
Integral can obtainWherein t=i/fs(i=0,1,2 ..., n-1), therefore can solve:
It can thus be concluded that fitted trend item f1(t)=p1t+p0, preferable data-signal can be obtained after eliminating trend term.Similarly, into
The secondary trend term that the secondary time-domain integration of row generates is f2(t)=p2t2+p1t+p0, can be obtained by solution system of linear equations more
Binomial coefficient solution.
When it is implemented, interior estimates 7 are produced by gravitational collapse method in experimental tank 9, when interior estimates 7 propagate to floating
Can cause the variation of biggish velocity field and density field at structural model 1, floating structure model 1 with interior estimates flow field into
Row coupled motions；The coupled motions form that interior estimates act on lower floating structural model passes through motor imagination recording unit acquisition note
Record obtains its coupled motions status information by the analysis processing based on acquired data of host computer, and combines optical fiber Bradley
Lattice grating carries out anchor chain dynamometry, not only obtains the distribution characteristics of stress on anchor chain, additionally it is possible to answer by fiber bragg grating stress
The different bending situations for understanding anchor chain of change effectively solve floating structure in the mould of interior estimates effect lower platform forms of motion
The stability of floating structure is ground in the technical issues of quasi-, record and anchor chain power measure, the building and implementation of the experimental system
Study carefully and is of great significance.
The above described is only a preferred embodiment of the present invention, be not that the invention has other forms of limitations, this
Experimental system described in scheme can be used for movement simulation and the record of other floating structures, any skill for being familiar with this profession
Art personnel are applied to it possibly also with the technology contents make modifications or to change or modify the equivalent equivalent Example of the disclosure above
Its field, but without departing from the technical solutions of the present invention, above embodiments are made according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling, still fall within the protection scope of technical solution of the present invention.
Claims (7)
1. coupled motions and dynamometry experimental system for simulating that interior estimates act on lower ocean floating structure, which is characterized in that including
Experimental tank (9), floating structure model (1), motor imagination recording unit (2), anchor chain unit (3) and anchor chain load cell (4),
Motor imagination recording unit (2) setting is in the center of gravity of floating structure model (1), floating structure model (1) and anchor chain list
First (3) are connected to realize and fix to it, and anchor chain load cell (4) is connected with anchor chain model (3)；
The floating structure model (1) successively includes main platform body module (11), the installation of motor imagination recording unit from top to bottom
Module (12) and counterweight module (13), main platform body module (11), motor imagination recording unit install module (12) and match molality
It is connected between block (13) by thread seal；
The motor imagination recording unit (2) includes microprocessor and the microelectronics gyroscope being connected with microprocessor, micro- electricity
Sub- accelerometer, wireless transport module and power module, microelectronics gyroscope is to acquire floating structural model under body coordinate system
Rolling, pitching and yawing information, swaying, surging of the microelectronics accelerometer to acquire floating structural model under body coordinate system
With heaving and its three received strength information, the origin of the body coordinate system is located at the position of centre of gravity of floating structure model, along interior isolated
The direction of propagation of wave is Xt axis, and vertical direction is Zt axis straight up, and Yt axis is determined according to the right-hand rule, microelectronics gyroscope and
The information of acquisition is transmitted to microprocessor and pre-processed by microelectronics accelerometer, obtains the athletic posture number of floating structure model
According to being then uploaded to that host computer carries out data record and processing is analyzed through wireless transport module, and obtain motor imagination result；
The anchor chain unit (3) includes anchor chain model (32) and gravity weight object (31), and the anchor chain model (32) is to simulate
Practical stress on anchor chain, the gravity weight object (31) uses lead, to simulate the anchor connection of anchor chain；The anchor chain load cell
It (4) include fiber bragg grating connecting line (41) and fiber grating demodulation device (42), the fiber bragg grating connecting line
(41) one end is connected with anchor chain model (32), and the other end is connected with fiber grating demodulation device (42), to pass through fiber grating solution
Adjust the wavelength change propagated in device measurement anchor chain model.
2. coupled motions and dynamometry simulated experiment system that interior estimates according to claim 1 act on lower ocean floating structure
System, it is characterised in that: the anchor chain model (32) uses fiber grating, and the surface of fiber grating is provided with coat, the painting
Coating is made of flexible material.
3. coupled motions and dynamometry simulated experiment system that interior estimates according to claim 1 act on lower ocean floating structure
System, it is characterised in that: the anchor chain model uses flexible material production to simulate practical anchor chain stress, the table of anchor chain model
Face is embedded with fiber bragg grating (44), and the fiber bragg grating (44) sets along the length direction of anchor chain model (32)
It sets, and have more along the circumferencial direction of anchor chain model (32) is uniformly distributed.
4. coupled motions and dynamometry simulation that interior estimates according to claim 2 or 3 act on lower ocean floating structure are in fact
Check system, it is characterised in that: the flexible material is nylon, polyethylene, polypropylene or polyvinyl chloride.
5. coupled motions and dynamometry simulated experiment system that interior estimates according to claim 3 act on lower ocean floating structure
System, it is characterised in that: the fiber bragg grating (44) from the inside to the outside successively include optical fiber (48), interior wrapping layer (47) and outside
Wrapping layer (45), along optical fiber (48), equal spacing in length direction is laid with grating (46).
6. coupled motions and dynamometry simulated experiment system that interior estimates according to claim 5 act on lower ocean floating structure
System, it is characterised in that: be provided with multistage grating (46) on the optical fiber (48).
7. coupled motions and dynamometry simulation that interior estimates according to claim 2 or 3 act on lower ocean floating structure are in fact
Check system, it is characterised in that: the interior estimates (7) in the experimental tank (9) are produced by gravitational collapse method, in experimental tank (9)
Inside it is additionally provided with wave absorber (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811283333.4A CN109436197B (en) | 2018-10-31 | 2018-10-31 | Coupling motion and force measurement simulation experiment system of ocean floating structure under action of internal solitary wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811283333.4A CN109436197B (en) | 2018-10-31 | 2018-10-31 | Coupling motion and force measurement simulation experiment system of ocean floating structure under action of internal solitary wave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109436197A true CN109436197A (en) | 2019-03-08 |
| CN109436197B CN109436197B (en) | 2020-02-21 |
Family
ID=65549627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811283333.4A Active CN109436197B (en) | 2018-10-31 | 2018-10-31 | Coupling motion and force measurement simulation experiment system of ocean floating structure under action of internal solitary wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109436197B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110110654A (en) * | 2019-05-06 | 2019-08-09 | 中国科学院遥感与数字地球研究所 | A kind of amplitude inversion method and device for down type ocean interior estimates |
| CN110222306A (en) * | 2019-06-06 | 2019-09-10 | 大连理工大学 | A kind of improvement mode decomposition method analyzed and reconstructed suitable for interior estimates experimental flow field |
| CN110937082A (en) * | 2019-11-28 | 2020-03-31 | 哈尔滨工程大学 | Ship overturning risk testing method based on random wind field and sea waves |
| CN111122142A (en) * | 2020-01-14 | 2020-05-08 | 浙江大学 | Experimental device and method for researching dynamic response and flow field characteristics of anchor chain under cyclic motion |
| CN111780950A (en) * | 2020-07-08 | 2020-10-16 | 中国海洋大学 | Angle-controllable internal solitary wave optical remote sensing detection method and experimental device |
| CN113406006A (en) * | 2021-06-11 | 2021-09-17 | 中国海洋大学 | Method for detecting amplitude of second-mode convex-type internal isolated wave |
| CN113581407A (en) * | 2021-08-12 | 2021-11-02 | 上海交通大学三亚崖州湾深海科技研究院 | System for researching influence of any wave inward solitary wave on semi-submersible platform upright post and caisson |
| CN114006477A (en) * | 2021-10-28 | 2022-02-01 | 华南理工大学 | Wireless power transmission system operating in time solitary wave state and control method thereof |
| CN117002713A (en) * | 2023-06-19 | 2023-11-07 | 山东大学 | Special wave-based self-adaptive propulsion device for underwater vehicle |
| CN117521556A (en) * | 2023-11-27 | 2024-02-06 | 中国民用航空飞行学院 | Submarine attitude prediction method under influence of internal solitary waves |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226274A (en) * | 2005-02-16 | 2006-08-31 | Tetsuhiko Fujisato | Gravitational wave power generation device |
| CN107219060A (en) * | 2017-05-23 | 2017-09-29 | 大连理工大学 | The experimental system that a kind of interior ripple interacts with bubble |
| CN107560669A (en) * | 2017-08-31 | 2018-01-09 | 大连理工大学 | Internal wave of ocean measurement apparatus |
| CN108168839A (en) * | 2018-01-05 | 2018-06-15 | 中国海洋大学 | It is a kind of to study the interior estimates experimental provision that upright pile influences on minor diameter |
| CN108254157A (en) * | 2018-02-06 | 2018-07-06 | 中国海洋大学 | A kind of interior wave and the experimental system of submerged body interaction |
-
2018
- 2018-10-31 CN CN201811283333.4A patent/CN109436197B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226274A (en) * | 2005-02-16 | 2006-08-31 | Tetsuhiko Fujisato | Gravitational wave power generation device |
| CN107219060A (en) * | 2017-05-23 | 2017-09-29 | 大连理工大学 | The experimental system that a kind of interior ripple interacts with bubble |
| CN107560669A (en) * | 2017-08-31 | 2018-01-09 | 大连理工大学 | Internal wave of ocean measurement apparatus |
| CN108168839A (en) * | 2018-01-05 | 2018-06-15 | 中国海洋大学 | It is a kind of to study the interior estimates experimental provision that upright pile influences on minor diameter |
| CN108254157A (en) * | 2018-02-06 | 2018-07-06 | 中国海洋大学 | A kind of interior wave and the experimental system of submerged body interaction |
Non-Patent Citations (2)
| Title |
|---|
| 宋志军等: "内孤立波作用下Spar平台的运动响应", 《海洋学报》 * |
| 王飞: "内孤立波作用下小尺度竖直圆柱体的水动力特性研究", 《中国博士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110110654A (en) * | 2019-05-06 | 2019-08-09 | 中国科学院遥感与数字地球研究所 | A kind of amplitude inversion method and device for down type ocean interior estimates |
| CN110222306A (en) * | 2019-06-06 | 2019-09-10 | 大连理工大学 | A kind of improvement mode decomposition method analyzed and reconstructed suitable for interior estimates experimental flow field |
| CN110222306B (en) * | 2019-06-06 | 2022-12-27 | 大连理工大学 | Improved modal decomposition method suitable for internal solitary wave test flow field analysis and reconstruction |
| CN110937082A (en) * | 2019-11-28 | 2020-03-31 | 哈尔滨工程大学 | Ship overturning risk testing method based on random wind field and sea waves |
| CN110937082B (en) * | 2019-11-28 | 2021-11-09 | 哈尔滨工程大学 | Ship overturning risk testing method based on random wind field and sea waves |
| CN111122142B (en) * | 2020-01-14 | 2023-12-19 | 浙江大学 | Experimental device and method for researching dynamic response and flow field characteristics of anchor chain under cyclic motion |
| CN111122142A (en) * | 2020-01-14 | 2020-05-08 | 浙江大学 | Experimental device and method for researching dynamic response and flow field characteristics of anchor chain under cyclic motion |
| CN111780950A (en) * | 2020-07-08 | 2020-10-16 | 中国海洋大学 | Angle-controllable internal solitary wave optical remote sensing detection method and experimental device |
| CN113406006A (en) * | 2021-06-11 | 2021-09-17 | 中国海洋大学 | Method for detecting amplitude of second-mode convex-type internal isolated wave |
| CN113406006B (en) * | 2021-06-11 | 2022-07-01 | 中国海洋大学 | Method for detecting amplitude of second-mode convex-type internal isolated wave |
| CN113581407A (en) * | 2021-08-12 | 2021-11-02 | 上海交通大学三亚崖州湾深海科技研究院 | System for researching influence of any wave inward solitary wave on semi-submersible platform upright post and caisson |
| CN114006477A (en) * | 2021-10-28 | 2022-02-01 | 华南理工大学 | Wireless power transmission system operating in time solitary wave state and control method thereof |
| CN114006477B (en) * | 2021-10-28 | 2023-07-18 | 华南理工大学 | Wireless power transmission system running in time solitary wave state and control method thereof |
| CN117002713A (en) * | 2023-06-19 | 2023-11-07 | 山东大学 | Special wave-based self-adaptive propulsion device for underwater vehicle |
| CN117002713B (en) * | 2023-06-19 | 2024-05-14 | 山东大学 | Special wave-based self-adaptive propulsion device for underwater vehicle |
| CN117521556A (en) * | 2023-11-27 | 2024-02-06 | 中国民用航空飞行学院 | Submarine attitude prediction method under influence of internal solitary waves |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109436197B (en) | 2020-02-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109436197A (en) | Interior estimates act on coupled motions and the dynamometry experimental system for simulating of lower ocean floating structure | |
| Yang et al. | Seafloor geodetic network establishment and key technologies | |
| CN104034317B (en) | Reciprocating Oceanic Microstructure section plotter is utilized to detect the method for turbulent flow | |
| CN103261920B (en) | For gathering the automatic control submarine navigation device of geophysical data | |
| CN110174227A (en) | Submerged floating tunnel bridge response to forced vibration device and method under earthquake and coupling wave with current | |
| CN108955675A (en) | A kind of underground piping track detection system and method based on inertia measurement | |
| CN105486351A (en) | Real-time monitoring method and real-time monitoring system for velocity and direction of underground water current | |
| CN105182369B (en) | Measurement wave based on Big Dipper ground strengthening system and tide method | |
| CN106932484B (en) | A kind of measurement method of the bed characteristics based on fibre optical sensor | |
| CN106446539A (en) | Tide forecasting method based on global positioning system | |
| CN103576202A (en) | A streamer for seismic prospection comprising tilt compensation of directional sensors | |
| CN106500721A (en) | A kind of underwater robot dual redundant attitude detection system | |
| US20210109248A1 (en) | System, method, and device for real-time sinkhole detection | |
| CN115392098A (en) | Offshore wind power submarine cable exposure prediction method and system based on water-sand numerical simulation | |
| CN207164267U (en) | A kind of neritic area seabed High-Precision Gravimeter Survey system | |
| CN113624195B (en) | Submarine landslide deep deformation in-situ real-time monitoring device and analysis method | |
| CN110441736A (en) | Multi-joint Underwater nobody move under water device become baseline three dimension location method | |
| CN211318793U (en) | Ocean three-component gravity instrument based on damping metamaterial | |
| RU2572046C1 (en) | Marine self-contained bottom station for seismic survey and seismological monitoring | |
| CN103411603B (en) | Electric-field sensor posture position measuring method in ship electric field protection | |
| CN104483702A (en) | Earthquake forward modeling method applicable to non-uniform motion water bodies | |
| Ge et al. | A New type of device used on submarine landslides monitoring | |
| CN208060744U (en) | One kind being used for underwater dam body hidden troubles removing data acquisition device | |
| CN110208857A (en) | A kind of submarine sedimentary strata regional earthquake meter signal amplitude measurement method | |
| Ge et al. | Design and test of a MEMS accelerometer array for submarine landslide displacement monitoring |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |