Strength Evaluation Method, Device, Equipment and Storage Medium of Marine Tower

Abstract

The present invention discloses a strength assessment method, device, equipment and storage medium for a seaborne tower. The strength assessment method for a seaborne tower comprises: obtaining the physical dimension data of the tower and the supporting fixture, establishing a corresponding finite element geometric model, wherein the geometric model comprises any one or more of a tower model, a flange model and a supporting fixture model; establishing a physical and mechanical simulation model of the tower based on the material constitutive model of each of the tower and the supporting fixture, in combination with the geometric model; and conducting a strength assessment of the tower based on the motion acceleration in three directions and the gravity acceleration of the tower itself during sea transportation. The technical solution of the present application accurately assesses whether the strength of the tower meets the design requirements by simulating the force analysis of the tower during sea transportation, so as to avoid the problem of the tower suffering transportation damage or permanent deformation during sea transportation, thereby improving the safety and reliability of the seaborne tower.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a strength assessment method, device, equipment and storage medium for a marine tower. Background Art

[0002] As offshore wind power becomes increasingly prominent in deep-sea and large-megawatt applications, its scale of application continues to expand, and the supporting industry chain matures. The entire wind power industry has entered an era of price parity, and industry competition is particularly fierce. This places higher demands on all equipment manufacturers, and the importance of technological cost reduction is highlighted. However, the large-scale development of wind turbines also poses challenges to various aspects of the supporting structure. Since there are no height and width restrictions during offshore transportation, offshore towers are enlarged by increasing the base diameter to match the corresponding load level. However, as the diameter of offshore towers increases, higher requirements are placed on the overall transportation of the towers. As the tower diameter continues to increase, the stress during tower transportation is very high, which may cause problems such as tower surface damage and permanent deformation. How to properly address the above issues has become an urgent issue for the industry. Summary of the Invention

[0003] The present invention provides a strength assessment method, device, equipment and storage medium for a seaborne tower, which are used to prevent the tower from suffering transportation damage or permanent deformation during sea transportation, thereby improving the safety and reliability of the seaborne tower.

[0004] According to a first aspect of the present invention, a strength assessment method for a marine tower is provided, the strength assessment method for a marine tower comprising:

[0005] Obtaining physical dimension data of the tower and the supporting fixture, and establishing a corresponding finite element geometric model, wherein the geometric model includes any one or more of a tower model, a flange model, and a supporting fixture model;

[0006] Establishing a physical and mechanical simulation model of the tower frame based on the material constitutive models of the tower frame and the supporting fixture and in combination with the geometric model;

[0007] The strength of the tower is evaluated based on the motion acceleration in three dimensions during sea transportation and the gravity acceleration of the tower itself.

[0008] In one embodiment, it further includes:

[0009] The supporting fixture is located below the tower, and the contact arc between the supporting fixture and the tower is greater than or equal to 90 degrees;

[0010] According to the mass and size of the tower, at least two supporting fixtures are provided at the lower edge of the tower to support the tower, and the contact position between the supporting fixture and the tower is preferably set as a flange.

[0011] In one embodiment, establishing a physical simulation model includes:

[0012] Laying a soft material between the tower frame and the supporting tooling, wherein the soft material and the tower are connected by friction contact, and the soft material includes nylon material and rubber material;

[0013] The tower and flange are made of a first rigid material, the supporting tooling is made of a second rigid material, and the soft material is made of rubber material. The flange is an ideal elastic-plastic material, and the performance of the first rigid material is better than that of the second rigid material.

[0014] In one embodiment, the establishing of the physical simulation model further includes:

[0015] Use hexahedron elements to simulate towers, flanges, and soft materials, and use hexahedron elements or tetrahedron elements to simulate support fixtures;

[0016] The tower, flange, soft material, and support tooling are meshed. The mesh density around the flange is greater than that of the support tooling. The mesh density in the non-contact area between the tower and the support tooling is set to a transitional density. At least five unit meshes are divided around the edge of any bolt hole on the flange.

[0017] In one embodiment, the method includes:

[0018] The acceleration of the three dimensions of the movement during the shipping process is obtained based on the prior hydrodynamic analysis results of the shipping area; or

[0019] The default three-dimensional motion acceleration of sea transportation is used as the three-dimensional motion acceleration during sea transportation.

[0020] In one embodiment, the strength assessment of the tower is performed based on the motion accelerations in three directions during sea transportation and the gravity acceleration of the tower itself, and is characterized by comprising:

[0021] According to the motion acceleration in three directions during the sea transportation process and the gravity acceleration of the tower itself, the critical stress of the flange and the tower is calculated;

[0022] When the yield strength of the flange and the first rigid material of the tower is greater than the critical stress, confirming that the strength of the tower meets the design requirements;

[0023] When the yield strength of the flange and the first rigid material of the tower is less than or equal to the critical stress, analyzing the value of the total strain, the range of the plastic region, and the positional relationship between the plastic region of the flange and the edge of the screw hole;

[0024] When the total strain value is less than 1%, the plastic zone does not penetrate the flange and the cylinder wall, and the plastic zone of the flange does not extend to the edge of the screw hole, it is confirmed that the strength of the tower meets the design requirements;

[0025] When the total strain value is greater than or equal to 1%, or the range of the plastic zone penetrates the flange or the barrel wall, or the plastic zone of the flange extends to the edge of the screw hole, it is confirmed that the strength of the tower does not meet the design requirements.

[0026] According to a second aspect of the present invention, there is provided a strength assessment device for a marine tower, comprising:

[0027] A first building module is used to obtain physical dimension data of the tower and the supporting fixture and to build a corresponding finite element geometric model, wherein the geometric model includes any one or more of a tower model, a flange model, and a supporting fixture model;

[0028] A second building module is used to build a physical and mechanical simulation model of the tower according to the material constitutive models of the tower and the supporting fixture, combined with the geometric model;

[0029] The evaluation module is used to evaluate the strength of the tower according to the motion acceleration in three directions during the sea transportation and the gravity acceleration of the tower itself.

[0030] In one embodiment, the first establishing module, the second establishing module and the evaluating module are controlled to implement any one of the above-mentioned strength evaluation methods for marine towers.

[0031] According to a third aspect of the present invention, there is provided an electronic device, the electronic device comprising: a communication interface, a processor, and a memory;

[0032] The memory is used to store program instructions, and when the program instructions are executed by the processor communicatively connected to the memory via the communication interface, any of the above-mentioned strength assessment methods for marine towers is implemented.

[0033] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, on which computer program instructions are stored. When the computer program instructions are executed by a computer (e.g., a processor in the computer), any of the above-mentioned strength assessment methods for marine towers is implemented.

[0034] In summary, the present invention provides a method and device for evaluating the strength of a seaborne tower, the method comprising: obtaining physical dimension data of the tower and supporting fixtures, establishing a corresponding finite element geometric model, the geometric model comprising any one or more of a tower model, a flange model, and a supporting fixture model; establishing a physical and mechanical simulation model of the tower based on the material constitutive models of the tower and the supporting fixtures, in combination with the geometric model; and performing a strength evaluation of the tower based on the motion acceleration in three directions during sea transportation and the gravity acceleration of the tower itself. The technical solution of the present application accurately evaluates whether the strength of the tower meets the design requirements by simulating the force analysis of the tower during sea transportation, thereby avoiding the problem of transportation damage or permanent deformation of the tower during sea transportation, thereby improving the safety and reliability of the seaborne tower.

[0035] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0036] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 A flow chart of a strength assessment method for a marine tower provided by an embodiment of the present invention;

[0039] Figure 2 A flow chart of step S13 of a strength assessment method for a marine tower provided by an embodiment of the present invention;

[0040] Figure 3 A structural diagram of a strength assessment device for a marine tower provided by an embodiment of the present invention;

[0041] Figure 4 A structural diagram of an electronic device provided by an embodiment of the present invention;

[0042] Figure 5 A schematic diagram of the positions of a support fixture and a tower of a sea transport tower provided by an embodiment of the present invention;

[0043] Figure 6 A schematic diagram of a grid distribution of a marine tower provided by an embodiment of the present invention;

[0044] Figure 7 An ideal elastic-plastic material stress-strain curve of a marine tower provided by an embodiment of the present invention;

[0045] Figure 8 A schematic diagram of the three-directional motion acceleration of a sea-going tower provided by an embodiment of the present invention;

[0046] Figure 9 A schematic diagram of critical stress of a marine tower provided by an embodiment of the present invention;

[0047] Figure 10 A schematic diagram of critical stress of another marine tower provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0050] like Figure 1 As shown, the present invention provides a strength assessment method for a marine tower, the strength assessment method for a marine tower comprising:

[0051] In step S11, physical dimension data of the tower and the supporting fixture are obtained, and a corresponding finite element geometric model is established, wherein the geometric model includes any one or more of a tower model, a flange model, and a supporting fixture model;

[0052] In step S12, a physical simulation model of the tower is established based on the material constitutive models of the tower and the supporting fixture, in combination with the geometric model;

[0053] In step S13, the strength of the tower is evaluated based on the motion accelerations in three directions during the sea transportation process and the gravity acceleration of the tower itself.

[0054] In one embodiment, a strength assessment method for a seaborne tower is designed to evaluate whether it meets design strength requirements during ocean transportation, ensuring safe and reliable transportation. The technical solution in this embodiment, based on ANSYS finite element analysis software, focuses on evaluating the strength of towers during ocean transportation. The tower's length and weight are prerequisites for the design and layout of storage and transportation fixtures. Based on empirical analysis, when a tower exceeds 30 meters in length and weighs over 150 tons, three support fixtures are typically placed at the front, middle, and rear of the tower. Two of these support fixtures contact the flanges at each end of the tower, and one contact the central tower tube. For towers of smaller length and weight, two support fixtures can be placed at the front and rear flanges. Once these design and layout requirements are met, storage and transportation strength calculations are performed to ensure safe and reliable storage and transportation of the offshore tower. The core solution uses the physical dimensional data of the tower and support fixtures to establish a geometric model, providing the foundation for physical simulation. This geometric model is combined with the material constitutive model to create a physical simulation model that accurately reflects the mechanical properties of the tower. Using the three-dimensional acceleration and gravity of ocean freight to simulate real-world transportation conditions, we conducted a tower strength analysis. We optimized the evaluation method across multiple aspects, including support fixture layout, material properties, and meshing, to improve simulation accuracy and reliability.

[0055] The physical dimensions of the tower and support fixtures are the basis for geometric modeling. Accurately measuring the dimensions ensures high fidelity of the finite element geometric model. The geometric model includes any or all of the tower, flange, and support fixtures, providing a structural basis for physical simulation. Based on the three-dimensional motion acceleration and gravity acceleration, the strength of the tower during transportation is evaluated to see if it meets the standards. Figure 5As shown, the support tooling is located below the tower, and the contact arc is greater than or equal to 90 degrees to ensure uniform support force. Improve the stability of the tower during transportation and avoid structural deformation caused by improper support position. The support tooling contacts the tower flange first. The mechanical properties of the flange are better than other parts of the tower. Prioritizing contact with the flange can reduce local stress concentration and improve overall anti-deformation ability. Soft materials are laid between the tower and the support tooling, and they are connected through friction contact to relieve local stress. Nylon materials and rubber materials are used to provide elastic buffering to effectively absorb vibration and impact during transportation. The flange and tower are made of a first rigid material with superior performance (such as Q355N), and the support tooling is made of a second rigid material with lower performance (such as Q235N). Among them, the flange is made of an ideal elastic-plastic material, and its stress-strain curve is shown in the attached figure. Figure 7 As shown in the figure. Soft materials can be further introduced into composite materials, such as polyurethane composite gaskets, to take into account both elasticity and durability. Figure 6 As shown, hexahedral elements (such as Solid186 elements) or tetrahedral elements (TE elements) are used to simulate different structures. The mesh density around the flange is higher than that of the supporting fixture, a transitional mesh density is used in non-contact areas, and the flange bolt hole edges are meshed with at least five elements. This differentiated mesh density design balances simulation accuracy and computational efficiency. Based on the hydrodynamic analysis results of the target sea area, three-dimensional motion accelerations are derived, accurately reflecting the true characteristics of the loads during transportation and suitable for demanding scenarios. If hydrodynamic analysis results for the target sea area are unavailable, default load values are used, providing flexibility to accommodate data-lacking scenarios. Furthermore, during transportation, sensors are installed to monitor the stress distribution and deformation of the tower in real time. Digital twin technology is used to integrate this monitoring data with the simulation model, enabling real-time dynamic optimization. A coupled model for wave impact, wind, and ocean current loads is introduced to ensure that the evaluation results are closer to actual transportation conditions. The mesh density is automatically adjusted based on stress concentration areas to improve simulation efficiency. A machine learning algorithm is used to predict the meshing strategy and optimize computing resource allocation. Multi-scale modeling is employed for bolt holes and contact areas with soft materials to enhance the accuracy of local response analysis. A hydraulically adjustable support device is designed to accommodate towers of varying sizes and loads. High-friction coatings or damping materials are added to contact surfaces to prevent slippage during transport. Carbon fiber reinforcements or corrosion-resistant coatings are introduced to enhance material performance. Shape memory alloys are used as support materials to automatically adjust their shape to accommodate changes in load during transport.

[0056] This seaborne tower strength assessment method is based on geometric modeling, combined with material properties and dynamic load analysis. It further improves the applicability and accuracy of the method through support tooling optimization, soft material application, and mesh refinement, providing reliable protection for the safety of offshore wind turbine tower transportation.

[0057] The technical solution in this embodiment accurately evaluates whether the strength of the tower meets the design requirements by simulating the force analysis of the tower during sea transportation, so as to avoid the tower from suffering transportation damage or permanent deformation during sea transportation, thereby improving the safety and reliability of the sea-going tower.

[0058] In one embodiment, Figure 2 As shown, step S13 includes the following steps S21-S25:

[0059] In step S21, the critical stress of the flange and the tower is calculated based on the motion acceleration of the three directions during the sea transportation process and the gravity acceleration of the tower itself;

[0060] In step S22, when the yield strength of the flange and the first rigid material of the tower is greater than the critical stress, it is confirmed that the strength of the tower meets the design requirements;

[0061] In step S23, when the yield strength of the first rigid material of the flange and the tower is less than or equal to the critical stress, the value of the total strain, the range of the plastic region, and the positional relationship between the plastic region of the flange and the edge of the screw hole are analyzed;

[0062] In step S24, when the total strain value is less than 1%, the range of the plastic region does not penetrate the flange and the barrel wall, and the plastic region of the flange does not extend to the edge of the screw hole, it is confirmed that the strength of the tower barrel meets the design requirements;

[0063] In step S25, when the total strain value is greater than or equal to 1%, or the range of the plastic zone penetrates the flange or the barrel wall, or the plastic zone of the flange extends to the edge of the screw hole, it is confirmed that the strength of the tower does not meet the design requirements.

[0064] In one embodiment, the critical stress is calculated by dynamic load, and combined with the material performance index and deformation behavior, it is judged whether the tower strength meets the design requirements. Figure 8 As shown in the figure, the three-directional motion acceleration (longitudinal, transverse, and vertical) during shipping and the gravity acceleration of the tower itself are used as input to calculate the critical stress of the key parts of the tower (flange and tower). If the transport acceleration value cannot be obtained based on the hydrodynamic analysis results of the transport ship type in the actual transport sea area, the "Guidelines for the Preparation of Cargo Securing Manuals" can be referred to. The shipping acceleration envelope is taken as the roll a x =3.8m / s 2 ; pitch a y =7.4m / s 2 ; Dangdang z =(9.2+9.8)m / s 2 As attached Figure 9 and attached Figure 10As shown, the critical stress is compared with the material's yield strength to determine whether the tower is at risk of yielding. If the material yields, the strain value and plastic zone range are further analyzed to quantify the deformation risk of the structure. Based on these factors, the strain value, plastic zone range, and the condition of the screw hole edges, it is ultimately determined whether the tower strength meets the design requirements.

[0065] Based on dynamic loads and considering the mechanical properties of the flange and tower, the critical stress is calculated as a key parameter for subsequent strength assessment. This critical stress is compared with the material's yield strength to determine whether the tower is in an elastic deformation state. If yielding occurs, the residual performance of the structure is further analyzed based on the strain value and the extent of the plastic region. The strength state of the tower is ultimately determined based on whether the plastic region extends to critical locations (such as the edges of the screw holes) and the magnitude of the strain value. Three-dimensional motion acceleration reflects the effects of ship sway and waves on the tower during transportation, including longitudinal, transverse, and vertical acceleration. Gravitational acceleration reflects the continuous force exerted by the tower's own weight on the structure. Dynamic loads are input into the finite element model to calculate the transportation stress distribution of the flange and tower. The critical stress, the maximum stress before yielding occurs, is influenced by a combination of material properties, geometry, and load distribution. The critical stress calculation must specifically consider the local stress concentration effects at the flange-to-tower interface and at the edges of the screw holes to improve assessment accuracy. After obtaining the critical stress, compare it with the material yield strength of the flange and tower to determine whether the structure is still in the elastic deformation stage and calculate the equivalent stress of the key area. Divide the material yield strength by the tower or flange thickness , divided by the material safety factor , the value obtained is less than or equal to 1, where the material safety factor It is a fixed value, generally set to 1.1. The calculation formula is as follows:

[0066]

[0067] When the critical stress is less than the material's yield strength, the tower undergoes only elastic deformation and can be restored to its original state after transportation, confirming that the strength meets design requirements. When the critical stress is greater than or equal to the material's yield strength, the flange or tower may enter a state of plastic deformation, requiring further analysis of the structure's residual deformation.

[0068] In the case of yielding, analyzing the relationship between strain value, plastic area and screw hole edge is a key step to further judge the safety of the structure. The total strain value can be evaluated according to IEC61400-6 , evaluate whether the structural deformation exceeds the design allowable value. If the plastic zone does not extend to the edge of the screw hole, it means that the deformation has limited impact on the structural connection performance. Check whether the plastic zone penetrates the flange or cylinder wall. If it penetrates, it means that the structure may fail and does not meet the design requirements. If the plastic zone does not penetrate and the strain value is less than 1%, it is confirmed that the structure still has sufficient bearing capacity. The refined mesh division around the screw hole (at least 5 unit meshes) provides technical support for analyzing the strain value and the scope of the plastic zone. The evaluation of the plastic zone needs to be combined with material properties, local geometric details and dynamic load effects to avoid one-sided analysis results.

[0069] The condition that meets the design requirements is the total strain value Less than 1%, the plastic area does not penetrate the flange or the cylinder wall, and the plastic area of the flange does not extend to the edge of the screw hole. The calculation formula is as follows:

[0070]

[0071] Where E is the elastic modulus of the material, is the equivalent stress, is the yield strength of the material of the tower or flange thickness. The condition that does not meet the design requirements is the total strain value A value greater than or equal to 1%, or a plastic zone extending through the flange or cylinder wall, or extending to the edge of the screw hole, indicates substandard structural strength. The strength assessment method uses dynamic load calculations, yield strength comparisons, and strain and plastic zone analysis to gradually determine the tower's strength during sea transport. These assessment criteria provide a clear basis for determining potential failure risks during sea transport.

[0072] In one embodiment, Figure 3 FIG. 1 is a block diagram of a strength assessment device for a marine tower according to an exemplary embodiment. Figure 3 As shown, the strength assessment device for a seaborne tower includes a first establishing module 31, a second establishing module 32 and an assessment module 33.

[0073] The first establishing module 31 is used to obtain physical dimension data of the tower and the supporting fixture and establish a corresponding finite element geometric model, wherein the geometric model includes any one or more of a tower model, a flange model and a supporting fixture model;

[0074] The second establishing module 32 is used to establish a physical and mechanical simulation model of the tower according to the material constitutive models of the tower and the supporting fixture, combined with the geometric model;

[0075] The evaluation module 33 is used to evaluate the strength of the tower according to the motion acceleration in three directions during the sea transportation process and the gravity acceleration of the tower itself.

[0076] The first establishing module 31 , the second establishing module 32 and the evaluating module 33 included in the strength evaluation device for a sea-going tower are controlled to execute the strength evaluation method for a sea-going tower described in any of the above embodiments.

[0077] like Figure 4 As shown, the present invention provides an electronic device 400, which includes: a communication interface, a processor 401, and a memory 402;

[0078] The memory 402 is used to store program instructions. When the program instructions are executed by the processor 401 that is communicatively connected to the memory 402 through the communication interface, the physical dimension data of the tower and the supporting tooling are obtained, and a corresponding finite element geometric model is established. The geometric model includes any one or more of a tower model, a flange model, and a supporting tooling model; a physical and mechanical simulation model of the tower is established based on the respective material constitutive models of the tower and the supporting tooling and combined with the geometric model; and the strength of the tower is evaluated based on the motion acceleration in three directions during sea transportation and the gravity acceleration of the tower itself.

[0079] The present invention provides a computer-readable storage medium having computer program instructions stored thereon. When the computer program instructions are executed by a processor, physical dimension data of a tower and a supporting tooling are acquired, and a corresponding finite element geometric model is established, wherein the geometric model includes any one or more of a tower model, a flange model, and a supporting tooling model. A physical and mechanical simulation model of the tower is established based on respective material constitutive models of the tower and the supporting tooling and in combination with the geometric model. The strength of the tower is evaluated based on the motion accelerations in three directions during sea transportation and the gravity acceleration of the tower itself.

[0080] It should be understood that the specific features, operations and details described herein above with respect to the method of the present invention may also be similarly applied to the apparatus and system of the present invention, or vice versa. In addition, each step of the method of the present invention described above may be performed by the corresponding components or units of the apparatus or system of the present invention.

[0081] It should be understood that the various modules / units of the apparatus of the present invention may be implemented in whole or in part by software, hardware, firmware, or a combination thereof. Each module / unit may be embedded in a processor of a computer device in the form of hardware or firmware or may be independent of the processor, or may be stored in a memory of a computer device in the form of software for the processor to call to execute the operations of each module / unit. Each module / unit may be implemented as an independent component or module, or two or more modules / units may be implemented as a single component or module.

[0082] In one embodiment, a computer device is provided, comprising a memory and a processor. The memory stores computer instructions executable by the processor, which, when executed by the processor, instruct the processor to perform the steps of the method according to an embodiment of the present invention. The computer device can be broadly defined as a server, a terminal, or any other electronic device with the necessary computing and / or processing capabilities. In one embodiment, the computer device can include a processor, memory, a network interface, a communication interface, etc. connected via a system bus. The processor of the computer device can be used to provide the necessary computing, processing, and / or control capabilities. The memory of the computer device can include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. can be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface and communication interface of the computer device can be used to connect to and communicate with external devices via a network. When the computer program is executed by the processor, the steps of the method according to the present invention are performed.

[0083] The present invention can be implemented as a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, causes the steps of the method of an embodiment of the present invention to be performed. In one embodiment, the computer program is distributed on a plurality of computer devices or processors coupled to a network so that the computer program is stored, accessed, and executed in a distributed manner by one or more computer devices or processors. A single method step / operation, or two or more method steps / operations, can be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations can be performed by one or more computer devices or processors, and one or more other method steps / operations can be performed by one or more other computer devices or processors. One or more computer devices or processors can perform a single method step / operation, or perform two or more method steps / operations.

[0084] Those skilled in the art will appreciate that the method steps of the present invention can be performed by instructing related hardware, such as a computer device or processor, via a computer program. The computer program can be stored in a non-transitory computer-readable storage medium, and when executed, the computer program causes the steps of the present invention to be performed. Any reference herein to memory, storage, database, or other media may include non-volatile and / or volatile memory, as appropriate. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid-state drive, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0085] The various technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification as long as such combination does not conflict.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for strength assessment of a marine tower, characterized in that: include: Obtaining physical dimension data of the tower and the supporting fixture, and establishing a corresponding finite element geometric model, wherein the geometric model includes any one or more of a tower model, a flange model, and a supporting fixture model; Establishing a physical simulation model of the tower frame according to the material constitutive models of the tower frame and the supporting fixture and in combination with the geometric model; Conducting a strength assessment on the tower according to the motion acceleration in three dimensions during shipping and the gravity acceleration of the tower itself; The establishing of the physical simulation model of the tower comprises: Laying a soft material between the tower frame and the supporting tooling, wherein the soft material and the tower are connected by friction contact, and the soft material includes nylon material and rubber material; The tower and flange are made of a first rigid material, and the supporting tooling is made of a second rigid material, wherein the performance of the first rigid material is better than that of the second rigid material; The strength assessment of the tower is performed based on the motion accelerations in three directions during sea transportation and the gravity acceleration of the tower itself, and is characterized by comprising: According to the motion acceleration in three directions during the sea transportation process and the gravity acceleration of the tower itself, the critical stress of the flange and the tower is calculated; When the yield strength of the flange and the first rigid material of the tower is greater than the critical stress, confirming that the strength of the tower meets the design requirements; When the yield strength of the flange and the first rigid material of the tower is less than or equal to the critical stress, analyzing the value of the total strain, the range of the plastic region, and the positional relationship between the plastic region of the flange and the edge of the screw hole; When the total strain value is less than 1%, the plastic zone does not penetrate the flange and the cylinder wall, and the plastic zone of the flange does not extend to the edge of the screw hole, it is confirmed that the strength of the tower meets the design requirements; When the total strain value is greater than or equal to 1%, or the range of the plastic zone penetrates the flange or the barrel wall, or the plastic zone of the flange extends to the edge of the screw hole, it is confirmed that the strength of the tower does not meet the design requirements.

2. The strength assessment method of a marine tower according to claim 1, wherein: Also includes: The supporting fixture is located below the tower, and the contact arc between the supporting fixture and the tower is greater than or equal to 90 degrees; According to the mass and size of the tower, at least two supporting fixtures are provided at the lower edge of the tower to support the tower, and the contact position between the supporting fixture and the tower is preferably set as a flange.

3. The strength assessment method of a marine tower according to claim 1, wherein: The step of establishing a physical simulation model of the tower further includes: Use hexahedron elements to simulate towers, flanges, and soft materials, and use hexahedron elements or tetrahedron elements to simulate support fixtures; The tower, flange, soft material, and support tooling are meshed. The mesh density around the flange is greater than that of the support tooling. The mesh density in the non-contact area between the tower and the support tooling is set to a transitional density. At least five unit meshes are divided around the edge of any bolt hole on the flange.

4. The strength assessment method of a marine tower according to claim 1, wherein: include: According to the prior hydrodynamic analysis results of the shipping area, the motion acceleration in three directions during the shipping process is obtained; or The default three-dimensional motion acceleration of sea transportation is used as the three-dimensional motion acceleration during sea transportation.

5. A strength assessment device for a marine tower, characterized in that: include: A first building module is used to obtain physical dimension data of the tower and the supporting fixture and to build a corresponding finite element geometric model, wherein the geometric model includes any one or more of a tower model, a flange model, and a supporting fixture model; A second building module is used to build a physical and mechanical simulation model of the tower according to the material constitutive models of the tower and the supporting fixture, combined with the geometric model; An evaluation module, configured to evaluate the strength of the tower according to the motion accelerations in three directions during shipping and the gravity acceleration of the tower itself; The second establishment module is also used to lay soft materials between the tower and the supporting tooling, and the connection between the soft material and the tower is a friction contact connection, and the soft material includes nylon material and rubber material; the tower and the flange adopt a first rigid material, and the supporting tooling adopts a second rigid material, wherein the performance of the first rigid material is better than that of the second rigid material; the strength assessment of the tower is performed based on the motion acceleration of the three directions in the process of sea transportation and the gravity acceleration of the tower itself, and is characterized in that it includes: calculating the critical stress of the flange and the tower according to the motion acceleration of the three directions in the process of sea transportation and the gravity acceleration of the tower itself; when the When the yield strength of the first rigid material of the flange and the tower is greater than the critical stress, it is confirmed that the strength of the tower meets the design requirements; when the yield strength of the first rigid material of the flange and the tower is less than or equal to the critical stress, the value of the total strain, the range of the plastic zone and the positional relationship between the plastic zone of the flange and the edge of the screw hole are analyzed; when the value of the total strain is less than 1%, and the range of the plastic zone does not penetrate the flange and the barrel wall, and the plastic zone of the flange does not extend to the edge of the screw hole, it is confirmed that the strength of the tower meets the design requirements; when the value of the total strain is greater than or equal to 1%, or the range of the plastic zone penetrates the flange or the barrel wall, or the plastic zone of the flange extends to the edge of the screw hole, it is confirmed that the strength of the tower does not meet the design requirements.

6. An electronic device, characterized in that: include: Communication interface, processor, memory; The memory is used to store program instructions, and when the program instructions are executed by the processor communicatively connected to the memory through the communication interface, the electronic device implements the strength assessment method of the seagoing tower according to any one of claims 1 to 4.

7. A computer-readable storage medium having program instructions stored thereon, characterized in that: When the program instructions are executed by a computer, the computer implements the strength assessment method for a marine tower according to any one of claims 1 to 4.

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