CN107291995A - A kind of the floating structures computation of structure stress method based on Zymography - Google Patents
A kind of the floating structures computation of structure stress method based on Zymography Download PDFInfo
- Publication number
- CN107291995A CN107291995A CN201710391142.9A CN201710391142A CN107291995A CN 107291995 A CN107291995 A CN 107291995A CN 201710391142 A CN201710391142 A CN 201710391142A CN 107291995 A CN107291995 A CN 107291995A
- Authority
- CN
- China
- Prior art keywords
- wave
- mrow
- floating structures
- calculates
- msub
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Complex Calculations (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention provides a kind of the floating structures computation of structure stress method based on Zymography, belong to the technical field of ocean float structure intensive analysis and assessment.A kind of the floating structures computation of structure stress method based on Zymography includes following steps：The first step, sets up model；Second step, calculates structural stress transmission function；3rd step, parameterizes wave spectrum；4th step, calculates structural stress energy spectrum；5th step, calculates short-term sea situation spectral moment；6th step, calculates short term probability density function；7th step, calculates wave scatter diagram；8th step, calculates wave to probability；9th step, calculates long term probability density function；Tenth step, calculates structural stress long-time statistical value；11st step, is checked；The present invention had both considered operation marine environment, and overall strength to the floating structures and local strength account for, it is considered to which more comprehensively, adaptability is higher, while being calculated by computer, eliminates the error problem for manually operating and bringing.
Description
Technical field
The present invention relates to the technical field of ocean float structure intensive analysis and assessment, it is specifically related to a kind of based on spectrum point
The floating structures computation of structure stress method of analysis method.
Background technology
With the progress of human society, the increasingly exhaustion of land resources, human society gradually starts to carry out marine resources
Development and utilization, such as offshore and gas development, ocean mineral digging, the development of marine nuclear energy.Due to the exploitation to ocean
All rely on the floating structures also in the starting stage, and for the development of Activities of Ocean and carried out as platform, when with
The variation of platform feature, traditional ship type the floating structures can not meet the demand of various ocean development,
Cause the form of the floating structures also various, such as drum type brake, the steady formula of post and cubes etc..
Traditional, conventional Ship Structure appraisal procedure is the experience accumulation of ship type structural research for many years, and by for many years
Practice test, it is adaptable to the assessment of ship type floating structure, but for these emerging new the floating structures
Speech, is not fully applicable, the problem of being easily caused assessment errors or can not assess.At present, for the steady formula semi-submerged platform of post,
Its structural strength is studied by characteristic wave method (design wave method), certain is chosen in Random Wave series from the statistical significance
Effect of one characteristic wave as single regular ripple approximate analysis Random Wave to platform structure, and it is flat for the steady formula partly latent of post
For platform, its feature load has：Maximum transversal released state, peak torque state, maximum longitudinal shear state, indulge at upper hull
Transverse acceleration maximum rating, maximum vertical case of bending etc. to acceleration maximum rating, upper hull.But for this limited
The analysis method of enumerating Characteristics operating mode still suffers from deficiency, exists in theory for platform entirety and local strength and does not enumerate
The dangerous working condition arrived, causes structure to fail and destroy in actual use, and for the more novel floating sea of shape
For foreign works, its feature load more can not be artificially determined, even if can determine that feature load can not also prove this feature
It is master control operating mode for structure, therefore the appraisal procedure of the floating structures comprehensively or is not suitable with new in the presence of analysis at present
The problem of the floating structures.
The content of the invention
For the above-mentioned problems in the prior art, a kind of floating marine structure based on Zymography is now aimed to provide
Thing computation of structure stress method, with reference to the marine environmental conditions in the floating structures operation marine site, based on expected probability water
It is flat, calculate the structural stress of the floating structures optional position in statistical method, and by FEM calculation, more
Plus structural strength of the comprehensive assessment the floating structures under expected probability level, solve evaluation method not comprehensively and suitable
The problem of answering property is poor.
Concrete technical scheme is as follows：
A kind of the floating structures computation of structure stress method based on Zymography, including following steps：
The first step, sets up model；
According to the profile of the floating structures, hydrodynamic force wet structure model is set up using Slab element, and according to loading feelings
Condition sets up quality model, and structural model is set up using Slab element and beam element, and in applying boundary condition on structural model, and
Quality model and structural model are same model.
Second step, calculates structural stress transmission function；
Choose covering the floating structures peak value of response some cycles and it is some wave to combination be unit wave amplitude
Regular ripple, and calculate rule of the floating structures in some unit wave amplitudes using hydrodynamic force wet structure model and quality model
The then seaway load under ripple effect, and the floating structures are obtained under the regular wave amplitude of unit according to regular ripple theoretical calculation
Structural stress response amplitude --- structural stress transfer function Hσ(ω|θ)。
3rd step, parameterizes wave spectrum；
By by structural stress transmission function and ocean wave spectrum stack combinations, and the short term response of structural stress is drawn, chosen
Connect the most with actual marine site sea condition in Lao Manpu, P-M spectrum, ISSC spectrums, Bo Shi spectrums, the easy type spectrum of light, specification spectrum and JONSWAP spectrums
Nearly ocean wave spectrum, calculates the characteristic parameter of various wave spectrums.
4th step, calculates structural stress energy spectrum；
With reference to the environmental condition in operation marine site, operation marine site wave spectrum integrated structure stress response transmission function is calculated
Obtain corresponding structural stress energy spectrum Sσ。
5th step, calculates short-term sea situation spectral moment；
Structural stress energy spectrum is integrated, calculating obtains short-term sea situation n-th order spectral moment mn。
6th step, calculates short term probability density function；
(Chinese is distributed with reference to the Rayleigh for meeting short-term sea situation：Rayleigh distributed), calculated by the Rayleigh regularities of distribution
Obtain short term probability density function distribution form f (x | σ).
7th step, calculates wave scatter diagram；
1. the floating structures act on single area, now, choose the wave scatter diagram in single marine site；
2. the floating structures are trans-regional operation, need to take the wave scatter diagram in multiple marine sites, and during according to operation
Between length be weighted draw one joint wave scatter diagram.
8th step, calculates wave to probability；
According to hydrological data, the number of times occurred with wave calculates probability of the operation marine site Wave wave to appearance, it is determined that not
With geographical position different waters Wave wave to.
9th step, calculates long term probability density function；
According to obtained short term probability density function, a series of combination to short-term stationary random processes is handled, will
Some short term probability density functions be multiplied using its probability of occurrence as power with it after and try to achieve long term probability density function g (x).
Tenth step, calculates structural stress long-time statistical value；
With reference to given design outcross probability, using the Weibull distribution (Chinese of two parameters：Weibull distribution) it is fitted ship
Body is moved and the long-term response of load is distributed FL(y), and then calculate the horizontal Q (y) of its outcross probability, surmount so as to obtain and specify
The long-time statistical value of the structural stress response of probability level.
11st step, is checked；
According to computation of structure stress result, result of calculation is checked according to design specification, this floating marine knot is judged
Whether the structural strength of structure thing meets design requirement.
A kind of above-mentioned the floating structures computation of structure stress method based on Zymography, wherein, with reference to calculating
Seaway load under the regular waves of some unit wave amplitudes of gained, and seaway load is loaded on structural model, so that
Calculating obtains corresponding structural stress response transfer function Hσ(ω | θ), structural stress response transmission function and the unit ripple applied
The angular frequency of the regular ripple of width is relevant with wave direction, wherein, ω is angular frequency, and θ is wave direction.
A kind of above-mentioned the floating structures computation of structure stress method based on Zymography, wherein, wave spectrum with
There is adopted wave height relevant with average zero-crossing period in each wave period, i.e. Sw(ω|HS,Tz), SwFor wave spectrum, ω is angular frequency
Rate, HSTo have adopted wave height, TZFor average zero-crossing period.
A kind of above-mentioned the floating structures computation of structure stress method based on Zymography, wherein, structural stress
Energy spectrum can be calculated by below equation：
Sσ=Hσ 2Sw
In formula, SσFor structural stress energy spectrum, HσFor structural stress transmission function, SwFor wave spectrum.
A kind of above-mentioned the floating structures computation of structure stress method based on Zymography, wherein, short-term sea situation
N-th order spectral moment mnIt can be calculated by below equation：
In formula, SσFor structural stress energy spectrum.
A kind of above-mentioned the floating structures computation of structure stress method based on Zymography, wherein, short term probability
Density function distribution form can be calculated by below equation：
In formula, σ2=m0, i.e. σ2It is short-term sea situation zeroth order spectral moment for calculating parameter.
A kind of above-mentioned the floating structures computation of structure stress method based on Zymography, wherein, long-time statistical
Probability density function g (x) can be calculated by below equation：
In formula,n0Average response number of times during for short-term corresponding per unit, piFor the probability of sea condition, pj
For s wave to probability.
A kind of above-mentioned the floating structures computation of structure stress method based on Zymography, wherein, ship motion
Long-term response distribution with load can be calculated by below equation：
In formula, q is scale parameter, and y is response.
A kind of above-mentioned the floating structures computation of structure stress method based on Zymography, wherein, response y's
Outcross probability level is Q (y)=1-FL(y)。
The good effect of above-mentioned technical proposal is：
1st, the environmental condition that the floating structures are likely encountered in operation marine site has been taken into full account, and result of calculation is equal
For the numerical solution come out according to theoretical calculation, without artificially going to determine the load suffered by structure, eliminating artificial judgement may band
The error come, accuracy is higher, and suitable for various marine structures of different shapes, it is to avoid the floating structures due to
Do not account for feature load and potential structure risk occur.
2nd, to the floating structures overall strength and local strength is accounted for, calculate obtained structural stress for
Each meant for the structure of arbitrary region and determine maximum stress under outcross probability level, the examination to structural strength is more comprehensive.
3rd, result is obtained with calculating method, without artificially designing one or more characteristic waves and loading in structure, reduction
Manually operated there is the probability misplaced, and result of calculation is relatively reliable, practical value is higher.
Brief description of the drawings
Fig. 1 is a kind of flow of the floating structures computation of structure stress method based on Zymography of the present invention
Figure.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, it is real below
The technical scheme that 1 couple of present invention of example combination accompanying drawing provides is applied to be specifically addressed, but herein below is not as limiting to the invention.
Fig. 1 is a kind of flow of the floating structures computation of structure stress method based on Zymography of the present invention
Figure.As illustrated, the present embodiment provide the floating structures computation of structure stress method based on Zymography include with
Under several steps：
The first step, sets up model；
According to the profile of the floating structures, hydrodynamic force wet structure mould is set up using Slab element (shell element)
Type, meanwhile, structural model is set up using Slab element and beam element, and apply boundary condition in results model, now, according to dress
Load situation sets up quality model, and quality model and structural model are same model, so as to ensure the uniformity of inertial load.
Second step, calculates structural stress transmission function；
Choose covering the floating structures peak value of response some cycles and it is some wave to combination be unit wave amplitude
Regular ripple, and calculate rule of the floating structures in some unit wave amplitudes using hydrodynamic force wet structure model and quality model
The then seaway load under ripple effect, and the floating structures are obtained under the regular wave amplitude of unit according to regular ripple theoretical calculation
Structural stress response amplitude --- structural stress transfer function Hσ(ω|θ)。
It is preferred that, regular wave period scope is desirable 3~34 seconds, is spaced 1 second, totally 30；The wave of regular ripple to take full wave to,
Wave is at intervals of 15 degree, totally 24；Two is combined, obtains the regular ripple of 720 unit wave amplitudes.
Seaway load under the regular waves of some unit wave amplitudes with reference to obtained by calculating, utilizes hydrodynamic force wet structure mould
Type calculates seaway load caused by the regular ripple of above-mentioned unit wave amplitude with quality model, and seaway load is loaded into structural model
On, obtain corresponding structural stress response transfer function H so as to calculateσ(ω | θ), structural stress response transmission function is with applying
Unit wave amplitude regular ripple angular frequency it is relevant with wave direction, wherein, ω is angular frequency, and θ is wave direction.
3rd step, parameterizes wave spectrum；
Ocean wave spectrum be describe wave a period of time in wave Energy distribution, by by structural stress transmission function with sea
Wave spectrum stack combinations can draw the short term response of structural stress, and easy from Lao Manpu, P-M spectrum, ISSC spectrums, Bo Shi spectrums, light
Type spectrum, specification spectrum and JONSWAP compose these and connect the most with actual marine site sea condition for being chosen in the wave spectrum in engineering practice
Near wave spectrum, and the characteristic parameter of various wave spectrums is calculated, wave is described by parameterizing wave spectrum.
Wave spectrum has adopted wave height and average zero-crossing period relevant with each wave period, i.e. Sw(ω|HS,Tz), SwFor
Wave spectrum, ω is angular frequency, HSTo have adopted wave height, TZFor average zero-crossing period.
4th step, calculates structural stress energy spectrum；
With reference to the environmental condition in operation marine site, operation marine site wave spectrum integrated structure stress response transmission function is calculated
Obtain corresponding structural stress energy spectrum Sσ, now,
Sσ(ω|HS,TZ, θ) and=Hσ(ω|θ)2Sw(ω|HS,TZ) (1)
In formula (1), and H σ (ω | θ) it is structural stress transmission function, Sw(ω|HS,Tz) it is wave spectrum.
5th step, calculates short-term sea situation spectral moment；
Structural stress energy spectrum is integrated, calculating obtains short-term sea situation n-th order spectral moment mn, now,
In formula (2), Sσ(ω|HS,TZ, θ) and it is structural stress energy spectrum.
6th step, calculates short term probability density function；
(Chinese is distributed with reference to the Rayleigh for meeting short-term sea situation：Rayleigh distributed), calculated by the Rayleigh regularities of distribution
Short term probability density function distribution form f (x | σ) is obtained, now,
In formula (3), σ2=m0, i.e. σ2It is short-term sea situation zeroth order spectral moment for a calculating parameter.
7th step, calculates wave scatter diagram；
The operating environment of current the floating structures is chosen, wave scatter diagram is obtained.
1. the floating structures act on single area, now, choose the wave scatter diagram in single marine site；
2. the floating structures are trans-regional operation, need to take the wave scatter diagram in multiple marine sites, and during according to operation
Between length be weighted draw one joint wave scatter diagram.
8th step, calculates wave to probability；
According to hydrological data, the number of times occurred with wave calculates probability of the operation marine site Wave wave to appearance, it is determined that not
With geographical position different waters Wave wave to being flowed because obvious master control wave is not present in operating area to, all directions
Equalization, therefore, wave are that all directions probability is equal to definition of probability.
9th step, calculates long term probability density function；
According to obtained short term probability density function, a series of combination to short-term stationary random processes is handled, will
Some short term probability density functions using its probability of occurrence as power be multiplied with it after and try to achieve long term probability density function g (x), this
When,
In formula,n0Average response number of times during for short-term corresponding per unit, piFor the probability of sea condition, pj
For s wave to probability.
Tenth step, calculates structural stress long-time statistical value；
With reference to given design outcross probability, using the Weibull distribution (Chinese of two parameters：Weibull distribution) it is fitted ship
Body is moved and the long-term response of load is distributed FL(y), and then calculate the horizontal Q (y) of its outcross probability, surmount so as to obtain and specify
The long-time statistical value of the structural stress response of probability level.
It is preferred that, in the North Atlantic Ocean, wave scatter diagram and wave are specified to probability calculation long term probability density function and surmount general
Rate level is 10-8, calculated according to following formula (5) and obtain the long-term extreme value of structural stress,
In formula (5), q is scale parameter, and y is response.
Also, response y outcross probability level is Q (y)=1-FL(y)。
11st step, is checked；
According to computation of structure stress result, result of calculation is checked according to design specification, this floating marine knot is judged
Whether the structural strength of structure thing meets design requirement.
Preferred embodiments of the present invention are these are only, embodiments of the present invention and protection domain is not thereby limited, it is right
For those skilled in the art, it should can appreciate that all utilization description of the invention and being equal made by diagramatic content replace
Change and obviously change resulting scheme, should be included in protection scope of the present invention.
Claims (9)
1. a kind of the floating structures computation of structure stress method based on Zymography, it is characterised in that including following several
Individual step：
The first step, sets up model；
According to the profile of the floating structures, hydrodynamic force wet structure model is set up using Slab element, and build according to loading condition
Vertical quality model, structural model is set up using Slab element and beam element, and in applying boundary condition, and quality on structural model
Model and structural model are same model.
Second step, calculates structural stress transmission function；
Choose covering the floating structures peak value of response some cycles and it is some wave to combination for unit wave amplitude rule
Then ripple, and regular ripple of the floating structures in some unit wave amplitudes is calculated using hydrodynamic force wet structure model and quality model
Seaway load under effect, and knot of the floating structures under the regular wave amplitude of unit is obtained according to regular ripple theoretical calculation
Structure stress response amplitude --- structural stress transfer function Hσ(ω|θ)。
3rd step, parameterizes wave spectrum；
By by structural stress transmission function and ocean wave spectrum stack combinations, and the short term response of structural stress is drawn, choose labor graceful
With the actual closest sea of marine site sea condition in spectrum, P-M spectrums, ISSC spectrums, Bo Shi spectrums, the easy type spectrum of light, specification spectrum and JONSWAP spectrums
Wave spectrum, calculates the characteristic parameter of various wave spectrums.
4th step, calculates structural stress energy spectrum；
With reference to the environmental condition in operation marine site, by operation marine site wave spectrum integrated structure stress response transmission function, calculating is obtained
Corresponding structural stress energy spectrum Sσ。
5th step, calculates short-term sea situation spectral moment；
Structural stress energy spectrum is integrated, calculating obtains short-term sea situation n-th order spectral moment mn。
6th step, calculates short term probability density function；
(Chinese is distributed with reference to the Rayleigh for meeting short-term sea situation：Rayleigh distributed), calculate and obtain by the Rayleigh regularities of distribution
Short term probability density function distribution form f (x | σ).
7th step, calculates wave scatter diagram；
1. the floating structures act on single area, now, choose the wave scatter diagram in single marine site；
2. the floating structures are trans-regional operation, need to take the wave scatter diagram in multiple marine sites, and long according to the activity duration
Short be weighted draws a joint wave scatter diagram.
8th step, calculates wave to probability；
According to hydrological data, the number of times occurred with wave calculates probability of the operation marine site Wave wave to appearance, it is determined that differently
Manage position different waters Wave wave to.
9th step, calculates long term probability density function；
According to obtained short term probability density function, a series of combination to short-term stationary random processes is handled, will be some
Short term probability density function be multiplied using its probability of occurrence as power with it after and try to achieve long term probability density function g (x).
Tenth step, calculates structural stress long-time statistical value；
With reference to given design outcross probability, using the Weibull distribution (Chinese of two parameters：Weibull distribution) transported to be fitted hull
The long-term response distribution F of dynamic and loadL(y), and then the horizontal Q (y) of its outcross probability is calculated, so as to obtain specified outcross probability
The long-time statistical value of the structural stress response of level.
11st step, is checked；
According to computation of structure stress result, result of calculation is checked according to design specification, this floating structures is judged
Structural strength whether meet design requirement.
2. a kind of the floating structures computation of structure stress method based on Zymography according to claim 1, its
It is characterised by, the seaway load under the regular waves of some unit wave amplitudes with reference to obtained by calculating, and seaway load is loaded
Onto structural model, corresponding structural stress response transfer function H is obtained so as to calculateσ(ω | θ), structural stress response transmission
Function is relevant with the angular frequency and wave direction of the regular ripple of the unit wave amplitude of application, wherein, ω is angular frequency, and θ is wave direction.
3. a kind of the floating structures computation of structure stress method based on Zymography according to claim 1, its
It is characterised by, the wave spectrum has adopted wave height and average zero-crossing period relevant with each wave period, i.e. Sw(ω|HS,
Tz), SwFor wave spectrum, ω is angular frequency, HSTo have adopted wave height, TZFor average zero-crossing period.
4. a kind of the floating structures computation of structure stress method based on Zymography according to claim 1, its
It is characterised by, the structural stress energy spectrum can be calculated by below equation：
Sσ=Hσ 2Sw
In formula, SσFor structural stress energy spectrum, HσFor structural stress transmission function, SwFor wave spectrum.
5. a kind of the floating structures computation of structure stress method based on Zymography according to claim 1, its
It is characterised by, the short-term sea situation n-th order spectral moment mnIt can be calculated by below equation：
<mrow>
<msub>
<mi>m</mi>
<mi>n</mi>
</msub>
<mo>=</mo>
<munderover>
<mo>&Integral;</mo>
<mn>0</mn>
<mi>&infin;</mi>
</munderover>
<msup>
<mi>&omega;</mi>
<mi>n</mi>
</msup>
<msub>
<mi>S</mi>
<mi>&sigma;</mi>
</msub>
<mi>d</mi>
<mi>&omega;</mi>
</mrow>
In formula, SσFor structural stress energy spectrum.
6. a kind of the floating structures computation of structure stress method based on Zymography according to claim 1, its
It is characterised by, the short term probability density function distribution form can be calculated by below equation：
<mrow>
<mi>f</mi>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mo>|</mo>
<mi>&sigma;</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mfrac>
<mi>x</mi>
<msup>
<mi>&sigma;</mi>
<mn>2</mn>
</msup>
</mfrac>
<mi>exp</mi>
<mo>&lsqb;</mo>
<mo>-</mo>
<mfrac>
<msup>
<mi>x</mi>
<mn>2</mn>
</msup>
<mrow>
<mn>2</mn>
<msup>
<mi>&sigma;</mi>
<mn>2</mn>
</msup>
</mrow>
</mfrac>
<mo>&rsqb;</mo>
</mrow>
In formula, σ2=m0, i.e. σ2It is short-term sea situation zeroth order spectral moment for a calculating parameter.
7. a kind of the floating structures computation of structure stress method based on Zymography according to claim 1, its
It is characterised by, the long-time statistical probability density function g (x) can be calculated by below equation：
<mrow>
<mi>g</mi>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mfrac>
<mrow>
<munder>
<mo>&Sigma;</mo>
<mi>i</mi>
</munder>
<munder>
<mo>&Sigma;</mo>
<mi>j</mi>
</munder>
<munder>
<mo>&Sigma;</mo>
<mi>k</mi>
</munder>
<msub>
<mi>n</mi>
<mn>0</mn>
</msub>
<msub>
<mi>P</mi>
<mi>i</mi>
</msub>
<msub>
<mi>P</mi>
<mi>j</mi>
</msub>
<mi>f</mi>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mo>|</mo>
<mi>&sigma;</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<munder>
<mo>&Sigma;</mo>
<mi>i</mi>
</munder>
<munder>
<mo>&Sigma;</mo>
<mi>j</mi>
</munder>
<msub>
<mi>n</mi>
<mn>0</mn>
</msub>
<msub>
<mi>P</mi>
<mi>i</mi>
</msub>
<msub>
<mi>P</mi>
<mi>j</mi>
</msub>
</mrow>
</mfrac>
</mrow>
In formula,n0Average response number of times during for short-term corresponding per unit, piFor the probability of sea condition, pjFor s waves
To probability.
8. a kind of the floating structures computation of structure stress method based on Zymography according to claim 1, its
It is characterised by, the ship motion and the long-term response of load distribution can be calculated by below equation：
<mrow>
<msub>
<mi>F</mi>
<mi>L</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>y</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mn>1</mn>
<mo>-</mo>
<mi>exp</mi>
<msup>
<mrow>
<mo>(</mo>
<mo>-</mo>
<mfrac>
<mi>y</mi>
<mi>q</mi>
</mfrac>
<mo>)</mo>
</mrow>
<mi>h</mi>
</msup>
</mrow>
In formula, q is scale parameter, and y is response.
9. a kind of the floating structures computation of structure stress method based on Zymography according to claim 8, its
It is characterised by, the outcross probability level of the response y is Q (y)=1-FL(y)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710391142.9A CN107291995B (en) | 2017-05-27 | 2017-05-27 | Floating marine structure stress calculation method based on spectral analysis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710391142.9A CN107291995B (en) | 2017-05-27 | 2017-05-27 | Floating marine structure stress calculation method based on spectral analysis method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107291995A true CN107291995A (en) | 2017-10-24 |
| CN107291995B CN107291995B (en) | 2021-04-06 |
Family
ID=60094864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710391142.9A Active CN107291995B (en) | 2017-05-27 | 2017-05-27 | Floating marine structure stress calculation method based on spectral analysis method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107291995B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108229029A (en) * | 2018-01-05 | 2018-06-29 | 哈尔滨工程大学 | Semi-submersible offshore platform structure safety monitoring point choosing method |
| CN109145519A (en) * | 2018-10-11 | 2019-01-04 | 哈尔滨工程大学 | A kind of spacious water navigation aid decision-making method of ship |
| CN109992910A (en) * | 2019-04-09 | 2019-07-09 | 山东交通学院 | Energy spectral density calculation method and application towards mass data |
| CN110532685A (en) * | 2019-08-29 | 2019-12-03 | 山东交通学院 | Floating structure sways motor imagination forecasting procedure |
| CN110553807A (en) * | 2019-07-17 | 2019-12-10 | 哈尔滨工程大学 | Open-circuit fault diagnosis algorithm for sensor of ship structure stress monitoring system |
| CN110767322A (en) * | 2019-09-29 | 2020-02-07 | 上海交通大学 | Ocean floating platform hot spot stress calculation method based on response surface model |
| 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 |
| CN112668246A (en) * | 2021-01-07 | 2021-04-16 | 中国海洋大学 | Method for forecasting long-term response extremum of ocean platform |
| CN112818512A (en) * | 2021-01-04 | 2021-05-18 | 上海勘测设计研究院有限公司 | Storm mode-based maximum single-wave height Hmax calculation method |
| CN113094834A (en) * | 2021-04-14 | 2021-07-09 | 中国船舶科学研究中心 | Multi-module platform connector load reverse pushing method |
| CN113792381A (en) * | 2021-09-10 | 2021-12-14 | 中国船舶工业集团公司第七0八研究所 | Screening working condition method for determining nonlinear wave load design extreme value |
| CN114880619A (en) * | 2022-05-10 | 2022-08-09 | 中国海洋大学 | Floating ocean structure random dynamic response analytic calculation method |
| CN115384721A (en) * | 2022-09-05 | 2022-11-25 | 中交第三航务工程局有限公司 | Method for calculating structural strength of foundation stay bar of three-upright-column floating type fan |
| CN115525993A (en) * | 2022-09-05 | 2022-12-27 | 中交第三航务工程局有限公司 | Method for calculating structural strength of foundation stay bar of four-upright floating type fan |
| CN115667066A (en) * | 2020-11-18 | 2023-01-31 | 三菱造船株式会社 | Estimation device, estimation method, and program |
| CN116226728A (en) * | 2023-05-09 | 2023-06-06 | 中国海洋大学 | Floating structure frequency response function identification method based on single regular wave excitation |
-
2017
- 2017-05-27 CN CN201710391142.9A patent/CN107291995B/en active Active
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108229029A (en) * | 2018-01-05 | 2018-06-29 | 哈尔滨工程大学 | Semi-submersible offshore platform structure safety monitoring point choosing method |
| CN109145519B (en) * | 2018-10-11 | 2022-08-02 | 哈尔滨工程大学 | Ship open water navigation aid decision-making method |
| CN109145519A (en) * | 2018-10-11 | 2019-01-04 | 哈尔滨工程大学 | A kind of spacious water navigation aid decision-making method of ship |
| CN109992910B (en) * | 2019-04-09 | 2023-01-13 | 山东交通学院 | Energy spectrum density calculation method and application for mass data |
| CN109992910A (en) * | 2019-04-09 | 2019-07-09 | 山东交通学院 | Energy spectral density calculation method and application towards mass data |
| CN110553807A (en) * | 2019-07-17 | 2019-12-10 | 哈尔滨工程大学 | Open-circuit fault diagnosis algorithm for sensor of ship structure stress monitoring system |
| CN110532685B (en) * | 2019-08-29 | 2023-02-07 | 山东交通学院 | Response forecasting method for floating structure swaying motion |
| CN110532685A (en) * | 2019-08-29 | 2019-12-03 | 山东交通学院 | Floating structure sways motor imagination forecasting procedure |
| CN110767322B (en) * | 2019-09-29 | 2022-07-19 | 上海交通大学 | Ocean floating platform hot spot stress calculation method based on response surface model |
| CN110767322A (en) * | 2019-09-29 | 2020-02-07 | 上海交通大学 | Ocean floating platform hot spot stress calculation method based on response surface model |
| CN115667066A (en) * | 2020-11-18 | 2023-01-31 | 三菱造船株式会社 | Estimation device, estimation method, and program |
| CN112818512B (en) * | 2021-01-04 | 2022-09-30 | 上海勘测设计研究院有限公司 | Storm mode-based maximum single-wave height Hmax calculation method |
| CN112818512A (en) * | 2021-01-04 | 2021-05-18 | 上海勘测设计研究院有限公司 | Storm mode-based maximum single-wave height Hmax calculation method |
| CN112668246B (en) * | 2021-01-07 | 2022-10-28 | 中国海洋大学 | Method for forecasting long-term response extremum of ocean platform |
| CN112668246A (en) * | 2021-01-07 | 2021-04-16 | 中国海洋大学 | Method for forecasting long-term response extremum of ocean platform |
| 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 |
| CN113094834A (en) * | 2021-04-14 | 2021-07-09 | 中国船舶科学研究中心 | Multi-module platform connector load reverse pushing method |
| CN113792381A (en) * | 2021-09-10 | 2021-12-14 | 中国船舶工业集团公司第七0八研究所 | Screening working condition method for determining nonlinear wave load design extreme value |
| CN114880619A (en) * | 2022-05-10 | 2022-08-09 | 中国海洋大学 | Floating ocean structure random dynamic response analytic calculation method |
| CN114880619B (en) * | 2022-05-10 | 2023-10-27 | 中国海洋大学 | Floating ocean structure random dynamic response analysis and calculation method |
| CN115384721A (en) * | 2022-09-05 | 2022-11-25 | 中交第三航务工程局有限公司 | Method for calculating structural strength of foundation stay bar of three-upright-column floating type fan |
| CN115525993A (en) * | 2022-09-05 | 2022-12-27 | 中交第三航务工程局有限公司 | Method for calculating structural strength of foundation stay bar of four-upright floating type fan |
| CN115525993B (en) * | 2022-09-05 | 2024-02-02 | 中交第三航务工程局有限公司 | Calculation method for structural strength of four-column floating type fan foundation stay bar |
| CN115384721B (en) * | 2022-09-05 | 2024-05-17 | 中交第三航务工程局有限公司 | Calculation method for structural strength of three-column floating type fan foundation stay bar |
| CN116226728A (en) * | 2023-05-09 | 2023-06-06 | 中国海洋大学 | Floating structure frequency response function identification method based on single regular wave excitation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107291995B (en) | 2021-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107291995A (en) | A kind of the floating structures computation of structure stress method based on Zymography | |
| Karimirad et al. | Hydroelastic code-to-code comparison for a tension leg spar-type floating wind turbine | |
| Ramachandran et al. | Investigation of response amplitude operators for floating offshore wind turbines | |
| Bachynski et al. | Design considerations for tension leg platform wind turbines | |
| Tomasicchio et al. | Experimental modelling of the dynamic behaviour of a spar buoy wind turbine | |
| Dong et al. | Long-term fatigue analysis of multi-planar tubular joints for jacket-type offshore wind turbine in time domain | |
| Cândido et al. | Modelling, control and pontryagin maximum principle for a two-body wave energy device | |
| Guarize et al. | Neural networks in the dynamic response analysis of slender marine structures | |
| Li et al. | Analysis of the coupled dynamic response of an offshore floating multi-purpose platform for the Blue Economy | |
| Agarwal et al. | Nonlinear coupled dynamic response of offshore Spar platforms under regular sea waves | |
| Drummen et al. | Benchmark study of slamming and whipping | |
| CN111625980A (en) | FPSO structure fatigue life calculation method | |
| Li et al. | Frequency domain dynamic analyses of freestanding bridge pylon under wind and waves using a copula model | |
| Fang et al. | Stochastic response assessment of cross-sea bridges under correlated wind and waves via machine learning | |
| Fontana | A multiline anchor concept for floating offshore wind turbines | |
| Nematbakhsh et al. | Comparison of experimental data of a moored multibody wave energy device with a hybrid CFD and BIEM numerical analysis framework | |
| Lei et al. | A floating system integrating a wind turbine with a steel fish farming cage: experimental validation of the hydrodynamic model | |
| Yang et al. | Analysis of mooring lines for wave energy converters: A comparison of de-coupled and coupled simulation procedures | |
| CN111382537A (en) | Ocean buoy hydrodynamic characteristic analysis method based on two-phase viscous flow theory | |
| Fonseca et al. | Design of a mooring system with synthetic ropes for the FLOW wave energy converter | |
| Engebretsen et al. | Distributed potential theory and its application for spar-type floating offshore wind turbines | |
| Terrero-Gonzalez et al. | Dynamic response of a shallow-draft floating wind turbine concept: Experiments and modelling | |
| Liu et al. | Dynamic elastic response testing method of bridge structure under wind-wave-current action | |
| Hermundstad et al. | Committee I. 2: Loads | |
| Hole | Design of Mooring Systems for Large Floating Wind Turbines in Shallow Water |
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 |