A method for designing a hawk head wave-absorbing body of a wave energy power generation device and related device

Abstract

The application discloses a design method of a hawk head wave absorber of a wave power generation device and related devices, and comprises the following steps: a three-dimensional parameterized model of the hawk head wave absorber is established; the model is assembled into a unit assembly of finite element analysis; the actual stress condition of the hawk head wave absorber in operation is analyzed, and the analysis result is taken as a boundary condition; the model assembly is subjected to finite element mesh division; solving is performed to obtain a finite element analysis result, and it is judged whether the analysis result meets design requirements; if not, the internal reinforcing rib structure of the hawk head wave absorber is optimized, and the modeling is performed again; and finally, the optimal scheme of the internal reinforcing rib structure of the hawk head wave absorber is obtained. The application does not need to manufacture an engineering prototype, and the analysis process is economical, rapid, better flexible and adaptive, so that the problem that the prior art cannot quickly and effectively design the internal reinforcing rib of the hawk head wave absorber is solved.

Description

Technical Field

[0001] This application relates to the field of wave energy generation technology, and in particular to a design method for an eagle-head wave absorber and related devices for a wave energy generation device. Background Technology

[0002] The eagle-head wave absorber is the structure in an eagle-type wave energy generator that directly bears wave loads and absorbs wave energy. Its working principle is as follows: Under the action of waves, the eagle-head wave absorber reciprocates around a hinge. As the wave transitions from a trough to a crest, the wave pushes the eagle-head wave absorber upwards, causing a hydraulic cylinder to compress hydraulic oil into an accumulator, converting wave energy into hydraulic energy. This hydraulic energy is then stored and released, driving a generator to produce electricity. In practical applications, the strength performance requirements for the eagle-head wave absorber are extremely high.

[0003] The eagle-head radar absorber mainly consists of curved thin plates on the surface and internal compartmentalized panels. However, thin plate structures suffer from low structural strength and susceptibility to deformation. Generally, arranging reinforcing ribs on the plate surface can significantly improve structural performance while meeting lightweight design requirements. Reinforcing ribs effectively increase the rigidity and strength of the product without significantly increasing its cross-sectional area, making them particularly suitable for components frequently subjected to pressure, torsion, and bending. The simplest cross-section for reinforcing ribs is rectangular; however, to meet certain design and manufacturing requirements, reinforcing ribs need to be modified to other complex cross-sections.

[0004] In existing technologies, the design method for the internal reinforcing rib structure of the eagle-head microwave absorber generally requires the manufacture of an engineering prototype for testing, and local structural improvements are made based on the test results. This process is complex, time-consuming, and uneconomical. Summary of the Invention

[0005] This application provides a design method and related device for the eagle-head wave absorber structure of a wave energy power generation device, which solves the problem that the existing technology cannot quickly and effectively design the internal reinforcing ribs of the eagle-head wave absorber.

[0006] In view of this, the first aspect of this application provides a design method for an eagle-head wave absorber in a wave energy power generation device, the method comprising:

[0007] S1. Based on the structural parameters of the eagle-head absorber to be designed, establish a three-dimensional model of the eagle-head absorber, import the three-dimensional model into the finite element software, and establish a model component of the analysis unit.

[0008] S2. Analyze the actual stress on the eagle-head wave absorber to determine the stress location of the eagle-head wave absorber when the wave load is maximum.

[0009] S3, after adjusting the position of the hawk-head wave absorber to the force-bearing position, performing finite element analysis based on the model assembly to determine total deformation, equivalent stress and equivalent strain, thereby obtaining an analysis result;

[0010] S4, adjusting the layout type of internal reinforcing ribs inside the hawk-head wave absorber, repeating steps S1 to S3 to obtain analysis results of various layout types of the internal reinforcing ribs, and comparing the various results to determine the optimal layout type of the internal reinforcing ribs.

[0011] Optionally, step S2 specifically comprises:

[0012] calculating the wave load borne by the hawk-head wave absorber based on the Morison equation, so as to determine that the wave load is the sum of that generated by wave fluid inertial force acceleration and that generated by frictional force viscosity;

[0013] when determining that the wave load is maximum according to the value of the wave load, the hawk-head wave absorber is in an upper limit position;

[0014] wherein, the Morison equation is:

[0015]

[0016] in the formula, F b is the wave load, C m is the inertial force coefficient, ρ is the seawater density, V is the volume of the structure, C d is the drag coefficient, u is the velocity of wave water particle, A is the horizontal projection area of the structure facing the incoming wave direction, d is the characteristic length, which is a dimensionless number that can be used to characterize fluid flow.

[0017] Optionally, step S3 specifically comprises:

[0018] adjusting the position of the hawk-head wave absorber to make the position of the hawk-head wave absorber reach the upper limit position in actual working conditions;

[0019] applying a fixed constraint to the hawk-head wave absorber according to the state when the hawk-head wave absorber reaches the upper limit position under actual working conditions, applying the characteristics of impact load along the X direction to the wave-facing surface of the hawk-head wave absorber, and performing solution to obtain total deformation, equivalent stress and equivalent strain.

[0020] Optionally, the layout types specifically comprise: "two-character" shape, "well" shape and "rice" shape.

[0021] A second aspect of the present application provides a hawk-head wave absorber design system for a wave energy power generation device, the system comprising:

[0022] A model unit is created to establish a three-dimensional model of the eagle-head microwave absorber based on the structural parameters of the eagle-head microwave absorber to be designed. The three-dimensional model is then imported into the finite element software to create a model component for an analysis unit.

[0023] The first analysis unit is used to analyze the actual stress situation of the eagle-head wave absorber and determine the stress location of the eagle-head wave absorber when the wave load is maximum.

[0024] The second analysis unit is used to adjust the position of the eagle-head wave absorber to the stress position, and then perform finite element analysis based on the model component to determine the total deformation, equivalent stress, and equivalent strain, thereby obtaining the analysis results.

[0025] The third analysis unit is used to adjust the layout type of the internal reinforcing ribs of the eagle-head absorber and trigger the establishment unit to obtain the analysis results of the layout of each type of internal reinforcing ribs. The results are compared to determine the optimal layout type of internal reinforcing ribs.

[0026] Optionally, the first analysis unit is specifically used for:

[0027] The wave load on the eagle-head wave absorber is calculated based on the Morison equation, thus determining that the wave load is the sum of the wave fluid inertial force acceleration and the frictional viscosity.

[0028] Based on the magnitude of the wave load, the upper limit of the eagle-head wave absorber is determined when the wave load is at its maximum.

[0029] The Morison equation is as follows:

[0030]

[0031] In the formula, F b For wave loads, C m Here, ρ is the inertial force coefficient, ρ is the seawater density, V is the structure volume, and C is the inertial force coefficient. d denoted as the drag coefficient, u as the wave velocity, A as the horizontal projected area of ​​the structure facing the direction of the incoming wave, and d as the characteristic length. It is a dimensionless number that can be used to characterize fluid flow.

[0032] Optionally, the second analysis unit is specifically used for:

[0033] Adjust the position of the eagle-head wave absorber so that it reaches the upper limit of the actual working condition;

[0034] The characteristics of applying fixed constraints to the eagle-head wave absorber when it reaches its upper limit position according to the actual working conditions, and applying impact load to the wave-facing surface of the eagle-head wave absorber along the X direction, are solved to obtain the total deformation, equivalent stress, and equivalent strain.

[0035] Optionally, the layout types specifically include: "two-character shape", "well shape", and "rice shape".

[0036] A third aspect of the present application provides an eagle-head wave absorber design device for a wave energy power generation device, the device comprising a processor and a memory:

[0037] the memory is configured to store program code and transmit the program code to the processor;

[0038] the processor is configured to execute steps of the eagle-head wave absorber design method for a wave energy power generation device according to the first aspect above according to instructions in the program code.

[0039] A fourth aspect of the present application provides a computer-readable storage medium, the computer-readable storage medium is configured to store program code, and the program code is configured to execute the eagle-head wave absorber design method for a wave energy power generation device according to the first aspect above.

[0040] It can be seen from the above technical solutions that the present application has the following advantages:

[0041] The present application provides a method for designing an eagle-head wave absorber of a wave energy power generation device, which provides an equivalent model of the eagle-head wave absorber and obtains the stress condition of the eagle-head wave absorber; in combination with finite element analysis, the real condition of the eagle-head wave absorber can be simulated, which lays a foundation for obtaining an eagle-head wave absorber structure suitable for various working conditions; further, the eagle-head wave absorber is optimized by changing the layout structure of reinforcing ribs inside the eagle-head wave absorber, and the optimal reinforcing rib layout can be selected through analysis. The method does not require manufacturing an engineering prototype, the analysis process is economical, rapid, has better flexibility and adaptability, thereby solving the problem that the prior art cannot quickly and effectively design reinforcing ribs inside an eagle-head wave absorber. Brief Description of Drawings

[0042] Figure 1 is a schematic flow diagram of an eagle-head wave absorber design method for a wave energy power generation device provided in an embodiment of the present application;

[0043] Figure 2 is a structural schematic diagram of an eagle-head wave absorber provided in an embodiment of the present application;

[0044] Figure 3 is a stress analysis diagram of an eagle-head wave absorber provided in an embodiment of the present application;

[0045] Figure 4 is a load characteristic diagram of wave load applied to an eagle-head wave absorber in finite element analysis provided in an embodiment of the present application;

[0046] Figure 5The projection of the eagle-head wave absorber provided in the embodiments of this application onto the wave load direction;

[0047] Figure 6 This is a schematic diagram of the design system of the eagle-head wave absorber of a wave energy power generation device provided in the embodiments of this application. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0049] Please see Figure 1 The eagle-head wave absorber design method for a wave energy power generation device provided in this application embodiment includes:

[0050] Step 101: Based on the structural parameters of the eagle-head microwave absorber to be designed, establish a three-dimensional model of the eagle-head microwave absorber, import the three-dimensional model into the finite element software, and establish a model component of the analysis unit.

[0051] It should be noted that the structure of the eagle-head wave absorber is as follows: Figure 2 As shown, the structural parameters of the eagle-head microwave absorber to be designed in this embodiment include: the material of the eagle-head microwave absorber is alloy steel Q420qD, and the Young's modulus E = 2.06 × 10⁻⁶. 5 N / mm 2 Poisson's ratio μ = 0.3; density ρ = 7.85 × 10⁻⁶ -6 kg / mm 3 The yield strength is 420 MPa.

[0052] First, a three-dimensional model of the eagle-head microwave absorber is established based on the above structural parameters. Then, the established three-dimensional model is imported into finite element software, and the material parameters of the eagle-head microwave absorber are set. The model material is Q420qD, and the Young's modulus E = 2.06 × 10⁻⁶. 5 N / mm 2 Poisson's ratio μ = 0.3; density ρ = 7.85 × 10⁻⁶ -6 kg / mm 3 The yield strength is 420 MPa. The plates in the model are simulated using 3-node elements, including longitudinal girder, strong crossbeams, longitudinal stiffeners, reinforcing ribs, and supports. Some more regular sections are simulated using 4-node elements. The finite element mesh is generated using a geometric structure setting display style, and the mesh size is adaptively adjusted by the system for rapid transition.

[0053] Step 102: Analyze the actual stress on the eagle-head wave absorber to determine the stress location of the eagle-head wave absorber when the wave load is maximum.

[0054] It should be noted that the force situation of the eagle-head wave absorber is as follows: Figure 3 As shown, when the eagle head reaches its upper limit, its projected area relative to the wave direction reaches its maximum, at which point it experiences the greatest wave load. At the upper limit, the eagle head is subjected to the constraint forces of the limiting device and the hinge connection, as well as its own weight, the tension of the hydraulic cylinder, and the wave load. In addition, the other surfaces around the eagle head are covered with seawater pressure, which is negligible here.

[0055] The process of establishing wave loads is as follows:

[0056] The magnitude of wave load is calculated using the Morison equation. The Morison equation assumes that the presence of a structure does not affect wave characteristics, so wave load can be described as the sum of wave fluid inertial force (generated by acceleration) and frictional force (generated by viscosity).

[0057]

[0058] In the formula, F b For wave loads, C m Here, ρ is the inertial force coefficient, ρ is the seawater density, V is the structure volume, and C is the inertial force coefficient. d denoted as the drag coefficient, u as the wave velocity, A as the horizontal projected area of ​​the structure facing the direction of the incoming wave, and d as the characteristic length. It is a dimensionless number that can be used to characterize fluid flow.

[0059] The periodicity of wave flow on C d and C m The values ​​have a significant impact. The Chuck number, KC = uT / D, is a very important parameter in oscillating flow. The Reynolds number, Re = ρμd / η, where u, ρ, and η are the fluid velocity, density, and dynamic viscosity coefficient, respectively, and d is the characteristic length; it is a dimensionless number used to characterize fluid flow. The drag coefficient C... d and inertial force coefficient C m It depends on the KC number and the Re number.

[0060] In the resistance-dominant region, resistance plays a dominant role, i.e., KC > 25. When Re > 1.5 × 10⁻⁵... 6 At that time, C m =1.8, C d =0.62; when 10 5 <Re<1.5×10 6 At that time, C m =1.8, C d=1.0~0.6. In the transition region, drag and inertial forces work together, i.e., 5 < KC < 25. At this point, the fluid behavior and loads are complex and uncertain. When Re > 1.5 × 10⁻⁶, the load increases. 6 At that time, C m =1.8, C d =0.62. In the region where inertial force is dominant, inertial force plays a leading role, i.e., KC < 5, and the drag effect can be ignored. C m =2.0. In this embodiment, C is taken as 2.0. m =1.8, C d =0.62.

[0061] The maximum velocity of wave particles in shallow water is:

[0062]

[0063]

[0064] In the formula: H is the wave height, which is selected as H = 6.0m under general operating conditions from Table 1; L is the wavelength, which is generally taken as H / L = 0.1; C is the wave velocity, m / s; T is the period, which is selected as T = 11.2s under general operating conditions from Table 1; d is the water depth, which is taken as the average depth after the water has submerged the platform, d = 15m.

[0065] Table 1 Sea conditions for platform wave load design

[0066] <![CDATA[Significant wave height H s / m]]> 13.3 6.0 5.0 <![CDATA[Peak period T p / s]]> 15.5 11.2 10.0

[0067] Step 103: After adjusting the position of the eagle-head wave absorber to the stress position, perform finite element analysis based on the model components to determine the total deformation, equivalent stress, and equivalent strain, thereby obtaining the analysis results;

[0068] It should be noted that the position of the eagle-head wave absorber is adjusted to reach its upper limit under actual working conditions. Then, a fixed constraint is applied to the eagle-head wave absorber according to its state when it reaches the upper limit under actual working conditions. Additionally, the characteristics of applying an impact load along the X-direction to the wave-facing surface of the eagle-head wave absorber are as follows: Figure 4 As shown, an impact load of two cycles is applied in the direction of the incoming wave, and then the solution is obtained. After the solution is obtained, post-processing is performed to derive the total deformation, equivalent stress, and equivalent strain.

[0069] Step 104: Adjust the layout type of the internal reinforcing ribs of the eagle-head absorber, and repeat steps 101-103 to obtain the analysis results of the layout of each type of internal reinforcing ribs. Compare the results to determine the optimal layout type of internal reinforcing ribs.

[0070] It should be noted that, firstly, for the convenience of finite element analysis, the internal reinforcing ribs of the Eagle Head radar absorber are optimized in two parts: the surface reinforcing ribs and the compartment bulkhead reinforcing ribs. When changing the rib layout, different rib layouts, including "two," "well," and "rice" shapes, need to be used while maintaining the same rib mass. Only the rib layout is modified throughout the process; other structural parameters of the Eagle Head radar absorber, including thickness, shape, and material, must remain the same.

[0071] Next, the finite element analysis results for different stiffener layouts need to be compared: the total deformation, average strain, and average stress of the eagle-head radar absorber. In the above description, the internal stiffeners of the eagle-head radar absorber are divided into two parts for optimization: surface stiffeners and compartment bulkhead stiffeners. Therefore, the final optimal solution is also the optimal solution for each of the surface stiffeners and the compartment bulkhead stiffeners.

[0072] The following is a simulation description provided in this application:

[0073] For example Figure 1 The internal reinforcing ribs of the eagle-head wave absorber shown are optimized, with a plate thickness of 20mm. Its projection in the wave load direction and its projected dimensions are as follows. Figure 5 As shown. The material is Q420qD, and Young's modulus E = 2.06 × 10⁻⁶. 5 N / mm 2 Poisson's ratio μ = 0.3; density ρ = 7.85 × 10⁻⁶ -6 kg / mm 3 The yield strength is 420 MPa.

[0074] Substituting the relevant geometric parameters of the eagle-head wave absorber into the formula in step 102, the maximum wave load on the eagle-head wave absorber under normal working conditions is calculated as: F b =5.7589×10 5 N.

[0075] 1. Optimization of surface reinforcing ribs on the eagle-head radar absorber

[0076] First, a thin plate with the same thickness, shape, and area as the eagle-head absorber in the load direction is created. Reinforcing rib structures with the same total mass but different layouts are added to the thin plate, such as "two," "well," and "rice" shapes. The 3D models of the thin plates with different reinforcing rib layouts are imported into finite element software, and the model material parameters are set. A load of the same magnitude and direction is applied in the normal direction of the thin plate. Constraints identical to those in actual working conditions are set on all the thin plate models. The mesh size and related parameters of the models are set to be the same.

[0077] With the same mass of stiffener material, the distribution design of stiffeners is carried out in the layout forms of "two-character", "grid-shaped" and "rice-shaped" respectively, and the mechanical properties of the stiffened thin plate structures with various layout forms are compared and analyzed.

[0078] Table 2 Performance comparison of different layout structures of stiffeners on the surface of the hawk-shaped radar absorber

[0079] Maximum deformation 90.938mm 22.292mm 16.646mm Mean strain 234.57με 118.05με 106.93με Mean stress 42.049 MPa 21.715 MPa 19.161 MPa

[0080] It can be seen from Table 2 that among the results obtained from the stiffener distribution design with the same mass of stiffeners in the above stiffener layout forms, the "rice-shaped" layout achieves the best stress and displacement constraint effect for the surface stiffeners of the hawk-shaped radar absorber, and the constraint effect of the "rice-shaped" stiffener layout is significantly better than that of the other two layout forms. Therefore, the optimal scheme for the layout of stiffeners on the surface of the hawk-shaped radar absorber is the "rice-shaped" layout.

[0081] 2. Optimization of stiffeners for compartment partitions of the hawk-shaped radar absorber

[0082] First, establish a thin plate with the same thickness, shape and area as the hawk-shaped radar absorber in the load direction, and add stiffener structures with the same total mass but different layouts on the thin plate, such as "two-character", "grid-shaped" and "rice-shaped". Import the three-dimensional models of thin plates with stiffeners of different layouts into finite element software, and set the material parameters of the models; apply loads of the same magnitude and direction in the normal direction of the thin plates; set the same constraints on all thin plate models as those in actual working conditions; set the size and relevant parameters of model meshing to be the same.

[0083] With the same mass of stiffener material, the distribution design of stiffeners is carried out in the layout forms of "two-character", "grid-shaped" and "rice-shaped" respectively, and the mechanical properties of the stiffened thin plate structures with various layout forms are compared and analyzed.

[0084] Table 3 Performance comparison of different layout structures of stiffeners for compartment partitions of the hawk-shaped radar absorber

[0085] Maximum deformation 321.15μm 341.23μm 297.66μm Mean strain 3.6842με 3.6017με 3.2042μm Mean stress 631.9 kPa 621.5 kPa 533.1 kPa

[0086] It can be seen from Table 3 that among the results obtained from the stiffener distribution design with the same mass of stiffeners in the above stiffener layout forms, the "rice-shaped" layout achieves the best stress and displacement constraint effect for the stiffeners of the hawk-shaped radar absorber compartment partitions, and the constraint effect of the "rice-shaped" stiffener layout is significantly better than that of the other two layout forms. Therefore, the optimal scheme for the layout of stiffeners for compartment partitions of the hawk-shaped radar absorber is the "rice-shaped" layout.

[0087] The above is a design method for an eagle-head wave absorber of a wave power generation device provided in the embodiments of this application. The following is a design system for an eagle-head wave absorber of a wave power generation device provided in the embodiments of this application.

[0088] Please see Figure 2 The eagle-head wave absorber design system for a wave energy power generation device provided in this application embodiment includes:

[0089] Establish unit 201 to create a three-dimensional model of the eagle-head absorber based on the structural parameters of the eagle-head absorber to be designed, import the three-dimensional model into the finite element software, and create a model component of the analysis unit.

[0090] The first analysis unit 202 is used to analyze the actual stress situation of the eagle-head wave absorber and determine the stress location of the eagle-head wave absorber when the wave load is maximum.

[0091] The second analysis unit 203 is used to adjust the position of the eagle-head wave absorber to the stress position, and then perform finite element analysis based on the model components to determine the total deformation, equivalent stress and equivalent strain, thereby obtaining the analysis results.

[0092] The third analysis unit 204 is used to adjust the layout type of the internal reinforcing ribs of the eagle-head absorber and trigger the establishment of units to obtain the analysis results of the layout of each type of internal reinforcing ribs. The results are compared to determine the optimal layout type of internal reinforcing ribs.

[0093] Furthermore, this application embodiment also provides a design device for an eagle-head wave absorber of a wave energy power generation device, the device including a processor and a memory:

[0094] The memory is used to store program code and transmit the program code to the processor;

[0095] The processor is used to execute the steps of the design method for the eagle-head wave absorber of the wave energy power generation device as described in the above method embodiments, according to the instructions in the program code.

[0096] Furthermore, this application embodiment also provides a computer-readable storage medium for storing program code, which is used to execute the eagle-head wave absorber design method of the wave energy power generation device described in the above method embodiment.

[0097] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0098] The terms "first," "second," "third," "fourth," etc., used in this application's specification and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0099] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0101] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0102] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0103] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0104] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A design method for an eagle-head wave absorber in a wave energy power generation device, characterized in that, Comprising: S1, establishing a three-dimensional model of the eagle-head wave absorber according to the structural parameters of the eagle-head wave absorber to be designed, importing the three-dimensional model into finite element software, and establishing a model component of an analysis unit; S2, analyzing the actual stress condition of the eagle-head wave absorber, and determining the stress position of the eagle-head wave absorber when the subjected wave load is maximum; S3, after adjusting the position of the eagle-head wave absorber to the stress position, performing finite element analysis based on the model component, and determining the total deformation, equivalent stress and equivalent strain, thereby obtaining an analysis result; S4, adjusting the layout types of the internal stiffeners inside the eagle-head wave absorber, repeating steps S1 to S3 to obtain analysis results of various layout types of the internal stiffeners, comparing each result, and determining the optimal layout type of the internal stiffeners; wherein step S2 specifically comprises: calculating the wave load to which the eagle-head wave absorber is subjected based on the Morison equation, thereby determining that the wave load is the sum of the wave generated by the inertial force acceleration of the wave fluid and that generated by the viscosity of the friction force; according to the magnitude of the wave load value, determining that the eagle-head wave absorber is at the upper limit position when the wave load is maximum; wherein the Morison equation is: ； In the formula, For wave loads, The inertial force coefficient, The density of seawater, For the volume of the structure, The drag coefficient, For the velocity of water particles in waves, The horizontal projected area of ​​the structure facing the direction of the incoming wave; wherein step S3 specifically comprises: adjusting the position of the eagle-head wave absorber to enable the position of the eagle-head wave absorber to reach the upper limit position in actual working conditions; applying a fixed constraint to the eagle-head wave absorber according to the state when the eagle-head wave absorber reaches the upper limit position under actual working conditions, applying an impact load to the wave-facing surface of the eagle-head wave absorber along the X direction, and performing solution to obtain total deformation, equivalent stress and equivalent strain; the layout types specifically comprise: "two-character" shape, "well" shape, and "rice" shape.

2. A design system for an eagle-head wave absorber in a wave energy power generation device, characterized in that, Comprising: an establishing unit, configured to establish a three-dimensional model of the eagle-head wave absorber according to the structural parameters of the eagle-head wave absorber to be designed, import the three-dimensional model into finite element software, and establish a model component of an analysis unit; a first analysis unit, configured to analyze the actual stress condition of the eagle-head wave absorber, and determine the stress position of the eagle-head wave absorber when the subjected wave load is maximum; a second analysis unit, configured to, after adjusting the position of the eagle-head wave absorber to the stress position, perform finite element analysis based on the model component, determine total deformation, equivalent stress and equivalent strain, thereby obtaining an analysis result; a third analysis unit, configured to adjust the layout types of the internal stiffeners inside the eagle-head wave absorber, trigger the establishing unit to obtain analysis results of various layout types of the internal stiffeners, compare each result, and determine the optimal layout type of the internal stiffeners; wherein the first analysis unit is specifically configured to: calculate the wave load to which the eagle-head wave absorber is subjected based on the Morison equation, thereby determining that the wave load is the sum of the wave generated by the inertial force acceleration of the wave fluid and that generated by the viscosity of the friction force; according to the magnitude of the wave load value, determine that the eagle-head wave absorber is at the upper limit position when the wave load is maximum; wherein the Morison equation is: ； In the formula, For wave loads, The inertial force coefficient, The density of seawater, For the volume of the structure, The drag coefficient, For the velocity of water particles in waves, The horizontal projected area of ​​the structure facing the direction of the incoming wave; the second analysis unit is specifically configured to: adjust the position of the eagle-head wave absorber to enable the position of the eagle-head wave absorber to reach the upper limit position in actual working conditions; Fixed constraints are applied to the hawkhead wave absorber according to the state when the hawkhead wave absorber reaches the upper limit position under actual working conditions, and impact load characteristics are applied to the wave-facing surface of the hawkhead wave absorber along the X direction, and solving is performed to obtain total deformation, equivalent stress and equivalent strain; The layout types specifically include: "two" shape, "well" shape and "rice" shape.

3. A design device for an eagle-head wave absorber in a wave energy power generation device, characterized in that, The device comprises a processor and a memory: The memory is configured to store program code and transmit the program code to the processor; The processor is configured to execute the hawkhead wave absorber design method of the wave energy power generation device according to claim 1 based on the instructions in the program code.

4. A computer-readable storage medium, characterized in that, The computer-readable storage medium is configured to store program code, and the program code is used to execute the hawkhead wave absorber design method of the wave energy power generation device according to claim 1.

Images