Method and device for determining cable material and diameter, electronic equipment and storage medium

Abstract

The application provides a cable material and diameter determination method and device, electronic equipment and storage medium, and the method comprises the following steps: acquiring a target transverse motion range, a target mooring force range, an incident wave average period, a ship full load transverse natural period, and a transverse motion, a mooring force and a stiffness coefficient under a standard diameter cable; determining a cable stiffness range meeting the target transverse motion range based on the target transverse motion range, the incident wave average period, the ship full load transverse natural period, and the transverse motion and the stiffness coefficient under the standard diameter cable; determining a cable stiffness range meeting the target mooring force range based on the target mooring force range, the incident wave average period, the ship full load transverse natural period, and the mooring force and the stiffness coefficient under the standard diameter cable; and determining the material and diameter required by the target cable based on the cable stiffness range. The application can achieve the purpose of selecting a more suitable cable in the mooring ship motion.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coastal engineering, and in particular to a cable material and diameter determination method and device, electronic equipment and storage medium. BACKGROUND

[0002] In the field of coastal engineering, different materials and different diameters of the cable directly affect the movement of the moored ship. How to select the appropriate material and diameter of the cable according to the movement of the moored ship is currently lacking in this regard. SUMMARY

[0003] Therefore, it is necessary to provide a cable material and diameter determination method and device, electronic equipment and storage medium to achieve the purpose of selecting a more suitable cable in the movement of the moored ship.

[0004] To solve the above problems, on the one hand, the present application provides a cable material and diameter determination method, comprising:

[0005] Obtaining a target transverse motion range, a target mooring force range, an incident wave average period, a ship full load transverse roll natural period, and a transverse motion, a mooring force and a stiffness coefficient under a standard diameter cable;

[0006] Determining a cable stiffness range that meets the target transverse motion range based on the target transverse motion range, the incident wave average period, the ship full load transverse roll natural period, and the transverse motion and the stiffness coefficient under the standard diameter cable;

[0007] Determining a cable stiffness range that meets the target mooring force range based on the target mooring force range, the incident wave average period, the ship full load transverse roll natural period, and the mooring force and the stiffness coefficient under the standard diameter cable;

[0008] Determining the material and diameter required for the target cable based on the cable stiffness range that meets the target transverse motion range and the cable stiffness range that meets the target mooring force range.

[0009] In one possible implementation, the cable stiffness range that meets the target transverse motion range is determined based on the following formula:

[0010]

[0011] wherein, S 横移 represents the transverse motion in the target transverse motion range, K 1 represents the cable stiffness in the cable stiffness range that meets the target transverse motion range, K d75 represents the cable force under the standard diameter cable,S d75 represents the amount of heave under the standard diameter rope, T represents the average period of incident wave, T 0 represents the natural period of roll of the ship when fully loaded, and the standard diameter is 75mm.

[0012] In one possible implementation, the rope stiffness range satisfying the target mooring force range is determined based on the following formula:

[0013]

[0014] wherein, F represents the rope stiffness within the rope stiffness range satisfying the target mooring force range, K 2 represents the rope stiffness within the rope stiffness range satisfying the target mooring force range, K d75 represents the rope force under the standard diameter rope, F d75 represents the mooring force under the standard diameter rope, T represents the average period of incident wave, T 0 represents the natural period of roll of the ship when fully loaded.

[0015] In one possible implementation, the material and diameter required by the target rope are determined based on the rope stiffness range satisfying the target heave motion range and the rope stiffness range satisfying the target mooring force range, and the method comprises:

[0016] intersecting the rope stiffness range satisfying the target heave motion range and the rope stiffness range satisfying the target mooring force range to obtain a target rope stiffness;

[0017] determining the material and diameter required by the target rope based on the target rope stiffness.

[0018] In one possible implementation, the material and diameter required by the target rope are determined based on the target rope stiffness, and the method comprises:

[0019] determining the material and diameter required by the target rope based on the target rope stiffness, the type of the ship, and the load of the ship.

[0020] In one possible implementation, the material and diameter required by the target rope are determined based on the target rope stiffness, the type of the ship, and the load of the ship, and the method comprises:

[0021] comparing the target rope stiffness, the type of the ship, and the load of the ship with a preset rope stiffness corresponding table to determine the material and diameter required by the target rope;

[0022] The cable rigidity correspondence table includes correspondence between different types of ships, different loads, cable material and diameter.

[0023] In a possible implementation, the method for determining the cable material and diameter further includes:

[0024] The range of standard wave heights for leaving the berth corresponding to the current sea wave period is obtained, and the target mooring force range is determined based on the standard wave height for leaving the berth.

[0025] In another aspect, the present application also provides a device for determining the cable material and diameter, which includes:

[0026] The acquisition module is configured to acquire the target heave motion range, the target mooring force range, the average incident wave period, the roll natural period of the ship when fully loaded, and the heave motion, the mooring force and the rigidity coefficient of the standard diameter cable;

[0027] The first rigidity calculation module is configured to determine the cable rigidity range meeting the target heave motion range based on the target heave motion range, the average incident wave period, the roll natural period of the ship when fully loaded, and the heave motion and the rigidity coefficient of the standard diameter cable;

[0028] The second rigidity calculation module is configured to determine the cable rigidity range meeting the target mooring force range based on the target mooring force range, the average incident wave period, the roll natural period of the ship when fully loaded, and the mooring force and the rigidity coefficient of the standard diameter cable;

[0029] The material and diameter determination module is configured to determine the material and diameter required by the target cable based on the cable rigidity range meeting the target heave motion range and the cable rigidity range meeting the target mooring force range.

[0030] In another aspect, the present application also provides an electronic device including a memory and a processor, wherein

[0031] The memory is configured to store a program;

[0032] The processor is coupled to the memory and is configured to execute the program stored in the memory to implement the steps of the method for determining the cable material and diameter according to any one of the above aspects.

[0033] In another aspect, the present application also provides a non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the steps of the method for determining the cable material and diameter according to any one of the above aspects.

[0034] The beneficial effects of the above implementation manner are that the cable material and diameter determination method, device, electronic equipment and storage medium provided by the application, the application finds through experiments that different cable materials and diameters are related to the mooring ship movement and the mooring ship mooring force, therefore, the application determines the cable stiffness range meeting the target horizontal movement amount range based on the target horizontal movement amount range, the average incident wave period, the roll natural period of the ship when fully loaded, and the horizontal movement amount and stiffness coefficient under the standard diameter cable; determines the cable stiffness range meeting the target mooring force range based on the target mooring force range, the average incident wave period, the roll natural period of the ship when fully loaded, and the mooring force and stiffness coefficient under the standard diameter cable; and determines the material and diameter required by the target cable based on the cable stiffness range meeting the target horizontal movement amount range and the cable stiffness range meeting the target mooring force range, so as to achieve the purpose of selecting a more suitable cable in the mooring ship movement. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 The flow chart of one embodiment of the cable material and diameter determination method provided by the application;

[0037] Figure 2 The principle block diagram of the cable material and diameter determination device provided by the application;

[0038] Figure 3 The structure schematic diagram of one embodiment of the electronic equipment provided by the application. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0040] In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0041] The terms "comprising" and "having" and any variations thereof herein are intended to cover a non-exclusive inclusion, for example a process, method, article, or apparatus that consists of a list of steps or modules not necessarily limited to those explicitly listed, but can include additional steps or modules not expressly listed or inherent to such process, method, article, or apparatus.

[0042] The naming or numbering of steps appearing in the embodiments of the present application does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering. The named or numbered flow steps can change the execution order according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0043] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments. It will be explicitly understood by those of ordinary skill in the art that the embodiments described herein can be combined with other embodiments.

[0044] The present application provides a cable material and diameter determination method, device, electronic equipment and storage medium, which are described below respectively.

[0045] As shown in Figure 1 The present application provides a cable material and diameter determination method, which comprises:

[0046] S101, acquiring a target horizontal movement range, a target mooring force range, an incident wave average period, a roll natural period of the ship when fully loaded, and a horizontal movement, a mooring force and a stiffness coefficient under a standard diameter cable;

[0047] S102, determining a cable stiffness range that meets the target horizontal movement range based on the target horizontal movement range, the incident wave average period, the roll natural period of the ship when fully loaded, and the horizontal movement and the stiffness coefficient under the standard diameter cable;

[0048] S103, determining a cable stiffness range that meets the target mooring force range based on the target mooring force range, the incident wave average period, the roll natural period of the ship when fully loaded, and the mooring force and the stiffness coefficient under the standard diameter cable;

[0049] Based on the cable stiffness range that meets the target horizontal movement range and the cable stiffness range that meets the target mooring force range, the material and diameter required by the target cable are determined.

[0050] It can be understood that the material of the target cable can be nylon cable or steel cable.

[0051] Comparison of test results of nylon cable and steel cable when bulk carrier is subjected to cross sea:

[0052] In order to further compare the mooring ship motion under the condition of nylon cable and steel cable, on the basis of using nylon cable with diameter of 75 mm, for 300,000 DWT and 150,000 DWT bulk carriers, under the same mooring mode and cross sea, steel cables with diameter of 40 mm and 38 mm are respectively used to carry out tests.

[0053] (1) Comparison of motion amount under the condition of nylon cable and steel cable

[0054] The rotation, transverse movement and longitudinal movement are greatly affected by the material of the cable. Since the steel cable has greater stiffness, the rotation, transverse movement and longitudinal movement are smaller when the steel cable is used. However, other motion amounts, i.e. roll, pitch and heave, are less affected by the material of the cable. When nylon cable and steel cable are used, the difference in longitudinal movement is basically the same, and the steel cable is about 75% smaller than the nylon cable. The changes of rotation and transverse movement are both increased with the increase of motion amount, and the change rates can be represented by the following formulas:

[0055] (S 尼 -S 钢 ) / S 尼 =(0.241n(S 尼 )+0.45) 100%

[0056] Wherein, S 尼 represents the rotation or transverse movement when nylon cable is used, and S 钢 represents the rotation or transverse movement when steel cable is used.

[0057] Similarly, the difference in longitudinal movement when nylon cable and steel cable are used is basically the same, and the steel cable is about 70% smaller than the nylon cable. The changes of rotation and transverse movement are also increased with the increase of motion amount, and the change rates of rotation and transverse movement of 150,000 DWT ship can be represented by the following formulas:

[0058] Transverse movement: (S 尼 -S 钢 ) / S 尼 =(0.161n(S 尼 )+0.25) 100%

[0059] Rotation: (S 尼 -S 钢 ) / S 尼 =(0.161n(S 尼 )+0.56) 100%

[0060] where S 尼 represents the rotation or traverse of the nylon cable, 钢 represents the rotation or traverse of the steel cable.

[0061] The maximum value calculation formula of the motion of the 300,000 DWT and 150,000 DWT bulk carriers under the action of cross sea when using steel cable is obtained according to the bulk carrier operation standard. The operation standard wave height corresponding to different cycles under different loading and unloading processes of the bulk carrier is shown in Table 1 and Table 2. The operation standard wave height corresponding to different cycles when using nylon cable and steel cable is consistent, but when using steel cable, the operation standard wave height is larger than that when using nylon cable due to the increase of cable stiffness.

[0062] Table 1: When the 300,000 DWT bulk carrier cable uses steel cable (40 mm in diameter), the operation standard wave height H4% (m) corresponding to different cycles according to the loading and unloading operation motion standard

[0063]

[0064] Table 2: When the 150,000 DWT bulk carrier cable uses steel cable (38 mm in diameter), the operation standard wave height H4% (m) corresponding to different cycles according to the loading and unloading operation motion standard

[0065]

[0066] (2) Comparison of cable tension under nylon cable and steel cable

[0067] Due to the large stiffness of steel cable, the tension of the cable when using steel cable is significantly larger than that when using nylon cable.

[0068] The outer envelope value of all cable tensions under each working condition is fitted to obtain the maximum value calculation formula of the ship cable tension when the 300,000 DWT and 150,000 DWT bulk carriers use steel cable:

[0069] (steel cable)

[0070]

[0071] In the formula, H The characteristic wave height parameter is used H 4%, T is the average period of the wave, L 0 is the deep water wavelength corresponding to the average period, W is the corresponding displacement of the fully loaded ship, B is the ship width.

[0072] For the diameter of 40 mm and 30 mm steel cable, the breaking force is 1100 kN and 1000 kN, and the control value is 55% of it, i.e. 605 kN and 550 kN respectively. According to this, the corresponding departure wave height corresponding to the control value of 605 kN and 550 kN of the mooring force of the cable rope tension of the 300,000-ton and 150,000-ton bulk carrier using steel cable is obtained, which is shown in Table 3 and Table 4 respectively. It can be seen from the comparison that the departure wave height decreases with the increase of the period, although the control value of the steel cable is larger, but because the cable force generated by the ship is larger, the control departure wave height is smaller than that of the nylon cable.

[0073] Table 3: When the cross sea acts, the corresponding departure standard wave height of different periods corresponding to the control value of 605 kN (using steel cable) and 440 kN (using nylon cable) of the mooring force corresponding to the cable rope tension of the 300,000-ton bulk carrier

[0074]

[0075] Table 4: When the cross sea acts, the corresponding departure standard wave height of different periods corresponding to the control value of 550 kN (using steel cable) and 440 kN (using nylon cable) of the mooring force corresponding to the cable rope tension of the 150,000-ton bulk carrier

[0076]

[0077] Numerical simulation analysis of the influence of cable diameter and cable material on moored ship motion:

[0078] In order to further study the influence of cable material (nylon cable and steel cable) on the motion of moored ships, as a supplement to the project research, based on the MIKE21 mooring simulation software, a mooring numerical analysis model is established for a 17.7 million LNG (liquefied natural gas) ship and a 15 million ton oil tanker (as a representative ship type), and the influence of cable material on the motion of moored ships under the action of irregular wave cross sea of different periods is studied.

[0079] (1) Brief introduction of numerical calculation method

[0080] The moored ship motion control equation in time domain can be expressed as follows:

[0081]

[0082] Among them M ij is the inertia restoring matrix, C ij is the static water restoring matrix, K ij is the impulse response function, m ij is the ship added mass, F ejis the force induced by the mooring system, F wj is the wave-induced exciting force, x j is the ship's six degrees of freedom component.

[0083] wave exciting force F wj is:

[0084]

[0085] where, is the velocity potential of the incident wave, p is the fluid density, S b is the ship's wet surface, is its normal.

[0086] The expression of the wave exciting force in the frequency domain is:

[0087]

[0088] where, is the incident pressure acting on the ship's wet surface, n j is the normal vector of the ship's six degrees of freedom motion component.

[0089] The integral equation of the ship's surface is established by the boundary element method, and the ship's wet boundary is discretized into control points, which is transformed into the following linear equation group:

[0090]

[0091] where, N is the number of grids divided on the ship's surface, and the source intensity σ(x) is the source distribution density on the unit surface area. The integral equation is solved by calculating the radiation impulse response function using the source distribution. The source distribution T ik is expressed in the integral form:

[0092]

[0093] where, G(x i ;x k ) is the Green's function at the free water surface, x i and x k represent the field point and the source point.

[0094] Radiation potential in the water area outside the ship can be obtained from the source intensity on the ship's surface The back-stepping solution is:

[0095]

[0096] (2) The influence of cable diameter and material on the mooring ship motion

[0097] The effective wave height of the numerical test wave is 1.0m, and the wave spectrum type is still JONSWAP spectrum. Based on the 75mm nylon cable of the physical model experiment, the 17.7 million tons LNG ship is calculated by using 64mm, 80mm, 88mm and 100mm diameter nylon cables to study the influence of cable diameter on ship motion. Based on the calculation results of LNG ship, the change of cable diameter has little effect on the change of cable stiffness, so only the change of cable material is studied. In terms of cable material, in addition to using nylon cable and pure steel cable, the mixed material of steel cable and nylon tail cable is also used. According to the OCIMF regulation, the breaking force of nylon tail cable is 25% larger than that of steel cable, so 100mm nylon cable (breaking force 1400kN) is used as the tail cable of 40mm steel cable (breaking force 1100kN), and the length of tail cable is set to 5m and 11m respectively according to the relevant specification.

[0098] The heave of the six-component mooring ship motion is mainly related to the incident wave period and wave height, and is less affected by the cable stiffness, so the heave changes little when the cable diameter and material are changed; the roll has small motion and changes little with the change of cable; the change of cable stiffness has little effect on the roll. Therefore, only the change law of the ship's transverse, longitudinal and rotational motion is analyzed.

[0099] The transverse motion of 17.7 million tons LNG ship decreases with the increase of cable diameter, but since the increase of nylon cable diameter increases the cable stiffness little, the decrease is not large. The transverse motion of 15 million tons oil tanker and 17 million tons LNG ship changes obviously with the change of cable material, and the transverse motion decreases obviously after using steel cable, and the decrease increases with the increase of incident wave period, and the maximum decrease is about 70%; after adding nylon tail cable to steel cable, the transverse motion increases a little due to the weakening of cable stiffness.

[0100] The longitudinal motion decreases with the increase of cable diameter, but it is not completely monotonic. This is mainly because when the wave is incident horizontally, the longitudinal motion response is relatively weak, so the regularity of the change of longitudinal motion with the change of cable diameter is not strong. The change law of longitudinal motion with the change of cable material is basically the same as that of transverse motion, and the longitudinal motion decreases obviously after using steel cable.

[0101] The rotation changes with the change of cable diameter similar to the longitudinal motion, and there is no obvious regularity, but it shows a downward trend as a whole. The rotation decreases obviously after using steel cable due to the enhancement of the restriction of bow and stern cables.

[0102] Comparing the influence of changing the cable diameter and material on the motion amount, it can be found that changing the cable material has a greater change in cable stiffness and a more obvious influence. Especially under the action of longer period waves, changing the cable diameter of the nylon cable has a limited influence on the motion amount, which can only reduce about 20% at most, while changing the cable material to steel cable can reduce the motion amount by about 70% at most.

[0103] (3) Influence of cable diameter and material on mooring cable force

[0104] The maximum mooring cable force is analyzed, which generally occurs in the position of the shorter transverse cable. After using steel cable, the cable stiffness is greatly improved, and the mooring cable force also increases by a considerable amount, which can reach 6 times at most. Using nylon stern cable reduces the mooring cable force while increasing the cable elasticity, which can effectively prevent cable breakage.

[0105] In some embodiments, the cable stiffness range that meets the target transverse motion amount range is determined based on the following formula:

[0106]

[0107] wherein, S 横移 represents the transverse motion amount in the target transverse motion amount range, K 1 represents the cable stiffness in the cable stiffness range that meets the target transverse motion amount range, K d75 represents the cable force under the standard diameter cable, S d75 represents the transverse amount under the standard diameter cable, T represents the average period of incident waves, T 0 represents the roll natural period of the ship when fully loaded, and the standard diameter is 75 mm.

[0108] In some embodiments, the cable stiffness range that meets the target mooring cable force range is determined based on the following formula:

[0109]

[0110] wherein, F represents the cable stiffness in the cable stiffness range of the target mooring cable force range, K 2 represents the cable stiffness in the cable stiffness range that meets the target mooring cable force range, K d75 represents the cable force under the standard diameter cable, F d75 represents the mooring cable force under the standard diameter cable, T represents the average period of incident waves,T 0 represents the roll natural period of the ship when fully loaded.

[0111] In some embodiments, based on the cable stiffness range satisfying the target amount of lateral movement range, and the cable stiffness range satisfying the target mooring force range, the material and diameter required by the target cable are determined, including:

[0112] The intersection of the cable stiffness range satisfying the target amount of lateral movement range, and the cable stiffness range satisfying the target mooring force range is obtained to obtain the target cable stiffness;

[0113] Based on the target cable stiffness, the material and diameter required by the target cable are determined.

[0114] In some embodiments, based on the target cable stiffness, the material and diameter required by the target cable are determined, including:

[0115] Based on the target cable stiffness, the type of the ship, and the load of the ship, the material and diameter required by the target cable are determined.

[0116] In some embodiments, based on the target cable stiffness, the type of the ship, and the load of the ship, the material and diameter required by the target cable are determined, including:

[0117] The target cable stiffness, the type of the ship, and the load of the ship are compared with a preset cable stiffness corresponding table to determine the material and diameter required by the target cable;

[0118] The cable stiffness corresponding table includes the corresponding relationship between the cable material and diameter for different types of ships and different loads.

[0119] In some embodiments, the method for determining the cable material and diameter further includes:

[0120] The range of standard wave height corresponding to the current sea wave period is obtained, and the target mooring force range is determined based on the standard wave height.

[0121] It can be understood that the relationship between the mooring ship lateral movement and the mooring force and the cable stiffness is:

[0122] Essentially, changing the cable diameter and material both affect the movement of the mooring ship by changing the cable stiffness, so they can be analyzed uniformly to obtain the corresponding rules. Based on the calculation results of the above-mentioned 170,000 LNG ship and 150,000-ton oil tanker, this is fitted and analyzed.

[0123] To unify the standard, the slope of the force-deformation curve at the point where each cable reaches the corresponding breaking force is taken, i.e. the stiffness coefficient at this time is taken as the index for measuring the stiffness of the cable. For the steel cable using nylon stern cable, it is analogous to the spring series principle, and the composite stiffness coefficient is calculated by the series formula. The stiffness coefficients of the materials of the cables are shown in Table 5 (where NL represents nylon cable, ST represents steel cable, (5) and (11) represent additional 5 m and 11 m nylon stern cables), and it can be seen from Table 5 that the defined stiffness coefficient increases with the increase of the diameter of the nylon cable. For the steel cable, the longer the nylon stern cable is, the smaller the stiffness coefficient is, and the stiffness coefficient of the pure steel cable is the largest.

[0124] Table 5: Table of defined cable stiffness coefficients (KN / m)

[0125]

[0126] Further, the transverse displacement and the mooring force under different periods and different cable conditions are dimensionless based on the results of the 75 mm nylon cable in the physical model experiment of the present study. The transverse displacement is considered as the main motion of the ship under the action of the cross sea, and therefore the relationship between the relative values of the transverse displacement and the mooring force and the dimensionless stiffness coefficient is mainly studied. The dimensionless transverse displacement decreases with the increase of the dimensionless cable stiffness coefficient, and the dimensionless mooring force increases with the increase of the dimensionless cable stiffness coefficient, and the change is related to the wave period.

[0127] The transverse displacement and the mooring force are fitted with the dimensionless wave period and the cable stiffness coefficient as the independent variables, and the following formulas are obtained:

[0128]

[0129] wherein, S 横移 is the transverse displacement, F is the mooring force, K is the cable stiffness coefficient, S d75 , F d75 , K d75 the transverse displacement, the mooring force and the stiffness coefficient under the 75 mm nylon cable respectively, T is the average period of the incident wave, T is the natural period of roll of the ship when fully loaded. It should be noted that the results beyond the breaking force of the cable are different from the actual situation, and therefore the fitting of the cable tension only uses the simulation results less than the breaking force of the cable.

[0130] Comparison of the test values and the formula calculated values of the transverse displacement and the mooring force of the bulk carrier:

[0131] To verify the established relationship between the lateral displacement and mooring force of a moored vessel and the stiffness of the mooring lines, test data on the lateral displacement and mooring force of 300,000-ton and 150,000-ton bulk carriers based on 75mm diameter nylon cables were used. Calculations were performed using formulas to obtain values ​​based on 40mm and 38mm steel cables, respectively. These values ​​were then compared with the corresponding test values, demonstrating the effectiveness of the formulas. In practical applications, given a known mooring material or diameter, the formulas can be used to estimate the changes in lateral displacement and mooring force when the material or diameter of the mooring lines is changed. Furthermore, the formulas can be used, combined with the target lateral displacement range and the target mooring force range, to select appropriate mooring materials and diameters to prevent mooring line breakage.

[0132] like Figure 2 As shown, the present invention also provides a device 200 for determining the material and diameter of a cable, comprising:

[0133] The acquisition module 201 is used to acquire the target lateral movement range, the target mooring force range, the average period of the incident wave, the natural period of the ship's roll when fully loaded, and the lateral movement, mooring force and stiffness coefficient under a standard diameter cable.

[0134] The first stiffness calculation module 202 is used to determine the cable stiffness range that satisfies the target lateral motion range based on the target lateral motion range, the average period of the incident wave, the natural period of the ship's roll when fully loaded, and the lateral motion and stiffness coefficient under a standard diameter cable.

[0135] The second stiffness calculation module 203 is used to determine the cable stiffness range that satisfies the target mooring force range based on the target mooring force range, the average period of the incident wave, the natural period of the ship's roll when fully loaded, and the mooring force and stiffness coefficient under standard diameter cables.

[0136] The material and diameter determination module is used to determine the required material and diameter of the target cable based on the cable stiffness range that meets the target lateral movement range and the cable stiffness range that meets the target tethering force range.

[0137] The cable material and diameter determination device provided in the above embodiments can realize the technical solutions described in the above cable material and diameter determination method embodiments. The specific implementation principles of each module or unit can be found in the corresponding content in the above cable material and diameter determination method embodiments, which will not be repeated here.

[0138] like Figure 3 As shown, the present invention also provides an electronic device 300. The electronic device 300 includes a processor 301, a memory 302, and a display 303. Figure 3Only some components of the electronic device 300 are shown, but it is understood that all the shown components are not required and more or less components can be implemented instead.

[0139] The memory 302 can be an internal storage unit of the electronic device 300, such as a hard disk or a memory, in some embodiments. The memory 302 can also be an external storage device of the electronic device 300, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, and the like, in other embodiments.

[0140] Further, the memory 302 can include both an internal storage unit and an external storage device of the electronic device 300. The memory 302 is used to store application software and various data installed in the electronic device 300.

[0141] The processor 301 can be a Central Processing Unit (CPU), a microprocessor, or other data processing chip, in some embodiments, for running program codes or processing data stored in the memory 302, such as the method for determining the cable material and diameter in the present application.

[0142] The display 303 can be an LED display, a liquid crystal display, a touch liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, and the like, in some embodiments. The display 303 is used to display information of the electronic device 300 and to display a visualized user interface. The components 301-303 of the electronic device 300 communicate with each other through a system bus.

[0143] In some embodiments of the present application, when the processor 301 executes the program for determining the cable material and diameter in the memory 302, the following steps can be implemented:

[0144] Obtaining a target amount of lateral movement range, a target mooring force range, an average incident wave period, a roll natural period of the ship when fully loaded, and an amount of lateral movement, a mooring force, and a stiffness coefficient under a standard diameter cable;

[0145] Determining a cable stiffness range that meets the target amount of lateral movement range based on the target amount of lateral movement range, the average incident wave period, the roll natural period of the ship when fully loaded, and the amount of lateral movement and the stiffness coefficient under the standard diameter cable;

[0146] determine a cable stiffness range satisfying the target range of the mooring force based on the target range of the mooring force, the average period of incident waves, the natural period of roll of the ship when fully loaded, and the mooring force and stiffness coefficient of the standard diameter cable;

[0147] determine the material and diameter of the target cable based on the cable stiffness range satisfying the target range of the lateral movement and the cable stiffness range satisfying the target range of the mooring force.

[0148] It should be understood that, in addition to the above functions, the processor 301 can also implement other functions when executing the program for determining the material and diameter of the cable in the memory 302, and specific implementation can be referred to the description of the corresponding method embodiments.

[0149] Further, the type of the electronic device 300 is not specifically limited, and the electronic device 300 can be a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop, or the like. Exemplary embodiments of the portable electronic device include, but are not limited to, a portable electronic device running an IOS, android, microsoft, or other operating system. The above-mentioned portable electronic device can also be other portable electronic devices, such as a laptop having a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present application, the electronic device 300 can also be a desktop computer having a touch-sensitive surface (e.g., a touch panel).

[0150] In another aspect, the present application also provides a non-transitory computer readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the method for determining the material and diameter of the cable provided by the above-mentioned methods, the method comprising:

[0151] obtaining a target range of lateral movement, a target range of mooring force, an average period of incident waves, a natural period of roll of the ship when fully loaded, and a lateral movement, a mooring force, and a stiffness coefficient of a standard diameter cable;

[0152] determine a cable stiffness range satisfying the target range of the lateral movement based on the target range of the lateral movement, the average period of incident waves, the natural period of roll of the ship when fully loaded, and the lateral movement and stiffness coefficient of the standard diameter cable;

[0153] determine a cable stiffness range satisfying the target range of the mooring force based on the target range of the mooring force, the average period of incident waves, the natural period of roll of the ship when fully loaded, and the mooring force and stiffness coefficient of the standard diameter cable;

[0154] Determine the material and diameter of the target cable based on the cable stiffness range satisfying the target lateral motion range and the cable stiffness range satisfying the target mooring force range.

[0155] Those skilled in the art can understand that all or part of the processes of the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer readable storage medium. The computer readable storage medium is a magnetic disk, an optical disk, a read-only memory, a random access memory, etc.

[0156] The method for determining the material and diameter of the cable, the device, the electronic equipment and the storage medium provided by the application are described in detail above. The principles and implementation manners of the application are described by applying specific examples in this paper. The above description of the embodiments is only used to help understand the method of the application and its core idea. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the application. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A method for determining the material and diameter of a cable, characterized by, The method comprises the following steps: obtaining a target amount-of-motion range, a target mooring force range, an average incident wave period, a natural roll period of the ship when fully loaded, and an amount of motion, a mooring force and a stiffness coefficient of a standard diameter rope; determining a rope stiffness range that meets the target amount-of-motion range based on the target amount-of-motion range, the average incident wave period, the natural roll period of the ship when fully loaded, and the amount of motion and the stiffness coefficient of the standard diameter rope; determining a rope stiffness range that meets the target mooring force range based on the target mooring force range, the average incident wave period, the natural roll period of the ship when fully loaded, and the mooring force and the stiffness coefficient of the standard diameter rope; determining the material and diameter required for the target rope based on the rope stiffness range that meets the target amount-of-motion range and the rope stiffness range that meets the target mooring force range; the rope stiffness range that meets the target amount-of-motion range is determined based on the following formula: wherein, S 横移 represents the amount of the lateral movement within the target range of the lateral movement amount, K 1 represents the cable stiffness within the range of the cable stiffness satisfying the target range of the lateral movement amount, K d75 represents the cable force under the standard diameter cable, S d75 represents the lateral movement amount under the standard diameter cable, T represents the average period of the incident wave, T 0 represents the natural period of roll of the ship when the ship is fully loaded, and the standard diameter is 75 mm; the rope stiffness range that meets the target mooring force range is determined based on the following formula: wherein, F a cable stiffness within a cable stiffness range representing a target mooring force range, K 2 a cable stiffness within a cable stiffness range representing a target mooring force range, K d75 a cable force under a standard diameter cable, F d75 a mooring force under a standard diameter cable, T T represents an incident wave average period, T 0 represents a roll natural period of the ship when fully loaded.

2. The method of claim 1, wherein determining the material and diameter required for the target rope based on the rope stiffness range that meets the target amount-of-motion range and the rope stiffness range that meets the target mooring force range, comprising: taking the intersection of the rope stiffness range that meets the target amount-of-motion range and the rope stiffness range that meets the target mooring force range to obtain the target rope stiffness; determining the material and diameter required for the target rope based on the target rope stiffness.

3. The method of claim 2, wherein determining the material and diameter required for the target rope based on the target rope stiffness, comprising: determining the material and diameter required for the target rope based on the target rope stiffness, the type of the ship and the load of the ship.

4. The method of claim 3, wherein determining the material and diameter required for the target rope based on the target rope stiffness, the type of the ship and the load of the ship, comprising: comparing the target rope stiffness, the type of the ship and the load of the ship with a preset rope stiffness corresponding table to determine the material and diameter required for the target rope; wherein the rope stiffness corresponding table comprises the corresponding relationship between the rope material and diameter for different types of ships and different loads.

5. The method of claim 1-4, wherein, The method further comprises the following steps: obtaining a range of standard wave heights corresponding to the current sea wave period, and determining the target mooring force range based on the range of standard wave heights.

6. A device for determining the material and diameter of a cable, characterized in that The method comprises the following steps: an obtaining module is configured to obtain a target amount-of-motion range, a target mooring force range, an average incident wave period, a natural roll period of the ship when fully loaded, and an amount of motion, a mooring force and a stiffness coefficient of a standard diameter rope; a first stiffness calculation module is configured to determine a rope stiffness range that meets the target amount-of-motion range based on the target amount-of-motion range, the average incident wave period, the natural roll period of the ship when fully loaded, and the amount of motion and the stiffness coefficient of the standard diameter rope; a second stiffness calculation module is configured to determine a rope stiffness range that meets the target mooring force range based on the target mooring force range, the average incident wave period, the natural roll period of the ship when fully loaded, and the mooring force and the stiffness coefficient of the standard diameter rope; a material and diameter determination module is configured to determine the material and diameter required for the target rope based on the rope stiffness range that meets the target amount-of-motion range and the rope stiffness range that meets the target mooring force range. A cable stiffness range satisfying a target lateral movement amount range is determined based on the following equation: wherein, S 横移 represents the amount of the lateral movement within the target range of the lateral movement amount, K 1 represents the cable stiffness within the range of the cable stiffness satisfying the target range of the lateral movement amount, K d75 represents the cable force under the standard diameter cable, S d75 represents the lateral movement amount under the standard diameter cable, T represents the average period of the incident wave, T 0 represents the natural period of roll of the ship when the ship is fully loaded, and the standard diameter is 75 mm; A cable stiffness range satisfying a target mooring force range is determined based on the following equation: wherein, F represents a cable stiffness within a cable stiffness range of a target mooring force range, K 2represents a cable stiffness within a cable stiffness range that satisfies a target mooring force range, K d75 represents a cable force under a standard diameter cable, F d75 represents a mooring force under a standard diameter cable, T represents an average period of incident waves, T 0represents a roll natural period of a ship when the ship is fully loaded.

7. An electronic device, comprising: comprising a memory and a processor, wherein, the memory, configured to store a program; the processor, coupled to the memory, configured to execute the program stored in the memory, so as to implement the steps of the cable material and diameter determination method according to any one of claims 1 to 5.

8. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the cable material and diameter determination method according to any one of claims 1 to 5.

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