Strength evaluation method, device and equipment of marine transportation tower and storage medium

Abstract

The invention discloses a strength evaluation method, device and equipment for a marine tower and a storage medium. The strength evaluation method for the marine tower comprises the steps that physical size data of the tower and a supporting tool are obtained, geometric models of corresponding finite elements are established, and the geometric models comprise any one or more of a tower tube model, a flange model and a supporting tool model; according to respective material constitutive models of the tower and the supporting tool, a physical and mechanical simulation model of the tower is established in combination with the geometric model; and carrying out strength evaluation on the tower according to the motion accelerations in three direction dimensions and the gravitational acceleration of the tower in the marine transportation process. According to the technical scheme, whether the strength of the tower meets the design requirement or not is accurately evaluated by simulating the stress analysis of the tower in the marine transportation process, so that the problem that the tower is subjected to transportation damage or generates permanent deformation in the marine transportation process is avoided, and the safety and reliability of the marine transportation tower are improved.

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 seaborne tower. Background Art

[0002] As the development trend of offshore wind power in deep sea and large megawatt becomes increasingly prominent, the application scale continues to expand, the supporting system of the industrial chain becomes more mature, and the entire wind power industry enters the era of parity. The industry competition is particularly fierce, which puts higher requirements on each complete machine manufacturer, and the importance of technology cost reduction is highlighted. However, the large-scale wind turbines also pose challenges to the various requirements of the supporting structure. Since there are no height and width restrictions in marine transportation, the offshore tower matches the corresponding load level by enlarging the bottom diameter of the tower. However, as the diameter of the offshore tower increases, higher requirements are placed on the overall transportation of the tower. As the diameter of the tower continues to increase, the stress during the transportation of the tower is very large, which may cause problems such as damage to the tower surface and permanent deformation of the tower. How to properly solve the above problems has become an urgent issue to be solved in 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 avoid transportation damage or permanent deformation of the tower 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] Acquire 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;

[0006] According to the material constitutive models of the tower and the supporting fixture, respectively, combined with the geometric model, a physical and mechanical simulation model of the tower is established;

[0007] The strength of the tower is evaluated according to the motion acceleration in three directions 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 support fixtures are arranged at the lower edge of the tower to support the tower, and the contact position between the support fixture and the tower is preferably set as a flange.

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

[0012] Laying a soft material between the tower frame and the supporting tooling, 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 the 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 a rubber material, wherein 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 supporting tooling;

[0016] The tower, flange, soft material and supporting tooling are meshed, where the mesh density around the flange is greater than the mesh density of the supporting tooling, the mesh density of the non-contact area between the tower and the supporting tooling is set to transitional density, and at least 5 unit meshes are divided around the edge of any bolt hole of the flange.

[0017] In one embodiment, it includes:

[0018] The acceleration of motion in three dimensions during shipping 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 adopted 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 and the gravity acceleration of the tower itself during the sea transportation process, and is characterized by comprising:

[0021] According to the motion acceleration of the three directions in 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 first rigid material of the flange and 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%, 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 barrel meets the design requirements;

[0025] When the value of the total strain is greater than or equal to 1%, or the range of the plastic zone runs through 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 size data of the tower and the supporting tooling, 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 tooling 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 respectively, in combination with the geometric model;

[0029] The evaluation module is used to evaluate the strength of the tower according to the motion accelerations 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 that is communicatively connected to the memory through 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, there is provided a computer-readable storage medium having computer program instructions stored thereon, which implement any of the above-mentioned strength assessment methods for marine towers when executed by a computer (e.g., a processor in the computer).

[0034] In summary, the present invention provides a strength assessment method and device for a seaborne tower, the method comprising: obtaining the physical dimension data of the tower and the supporting fixture, 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 according to the material constitutive models of the tower and the supporting fixture, combined with the geometric model; and conducting a strength assessment of the tower according to the motion accelerations in three directions and the gravity acceleration of the tower itself during the sea transport process. 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 transport, so as to avoid the problem of transportation damage or permanent deformation of the tower during sea transport, 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 partly become apparent from the description, or 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, claims, and 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 implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying 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 position of a supporting tool 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 acceleration of movement in three directions of a sea transport tower provided by an embodiment of the present invention;

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

[0047] Fig.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 only 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 article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

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

[0051] In step S11, the 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 according to the material constitutive models of the tower and the supporting fixture, respectively, in combination with the geometric model;

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

[0054] In one embodiment, the strength assessment method of the seaborne tower is intended to assess whether the design strength requirements can be met during the ocean transportation process to ensure the safety and reliability of the tower transportation. The technical solution in this embodiment is based on the ANSYS finite element analysis software, which is aimed at the strength assessment of the tower during the sea transportation process. The length and weight of the tower are the prerequisites for the design and layout of the storage and transportation tooling. Based on relevant experience analysis, when the tower length exceeds 30 meters and the weight exceeds 150 tons, three supporting toolings are usually arranged at the front, middle and rear of the tower, of which two supporting toolings are in contact with the flanges at both ends of the tower, and one supporting tooling is in contact with the tower barrel in the middle of the tower. For towers with smaller length and weight, two supporting toolings can be arranged at the flange positions at the front and rear parts. After meeting the above design and layout requirements, storage and transportation strength calculations are carried out to ensure the safety and reliability of the storage and transportation process of the offshore tower. The core solution is the physical size data of the tower and the supporting tooling, and a geometric model is established to provide a basis for physical simulation. The geometric model is combined with the material constitutive model to establish a physical simulation model to accurately reflect the mechanical properties of the tower. The three-direction acceleration and gravity acceleration in sea transportation are used to simulate real transportation conditions and conduct tower strength analysis. The evaluation method is optimized from multiple aspects such as support tooling layout, material properties, and mesh division to improve simulation accuracy and evaluation reliability.

[0055] The physical dimensions of the tower and supporting fixtures are the basis of geometric modeling. By accurately measuring the dimensions, the finite element geometric model can be ensured to have high fidelity. The geometric model includes any part or all of the tower, flange and supporting fixtures, providing a structural basis for physical simulation. According to the acceleration of motion in three directions and the acceleration of gravity, 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 force on the support. 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, which are connected by friction contact to relieve local stress. Nylon 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). 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 in the figure, hexahedral units (such as Solid186 units) or tetrahedral units (tetrahedral units) are used to simulate different structures. Among them, the mesh density around the flange is higher than that of the supporting tooling, the transitional mesh density is used in the non-contact area, and the edge of the bolt hole of the flange is divided into at least 5 unit meshes. The differentiated design of mesh density can balance the simulation accuracy and computational efficiency. Based on the hydrodynamic analysis results of the target sea area, the acceleration of motion in three directions is obtained, which accurately reflects the true characteristics of the load during transportation and is suitable for high-demand scenarios. If the hydrodynamic analysis results of the target sea area are lacking, the default load value is used to provide flexibility to adapt to the scenario where data is missing. Furthermore, during transportation, the stress distribution and deformation of the tower are monitored in real time by installing sensors. The monitoring data is linked to the simulation model using digital twin technology to achieve real-time dynamic optimization. The coupling model of wave impact, wind force and ocean current loads is introduced to make the evaluation results closer to the actual transportation conditions. The mesh density is automatically adjusted according to the stress concentration area to improve the simulation efficiency. The mesh division strategy is predicted in combination with the machine learning algorithm to optimize the allocation of computing resources. Multi-scale modeling methods are used for bolt holes and soft material contact areas to enhance the accuracy of local response analysis. Hydraulic adjustment support devices are designed to adapt to towers of different sizes and loads. High friction coefficient coatings or damping materials are added to the contact surface to prevent slippage during transportation. Carbon fiber reinforced materials or corrosion-resistant coatings are introduced to improve material performance. Shape memory alloys are used as support materials to automatically adjust the shape to adapt to load changes during transportation.

[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 power 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 transportation damage or permanent deformation of the tower during sea transportation, thereby improving the safety and reliability of the sea transportation 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 according to the motion acceleration of the three directions and the gravity acceleration of the tower itself during the sea transportation process;

[0060] In step S22, 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;

[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%, and 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 runs through 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 the material performance index and deformation behavior are combined to determine whether the tower strength meets the design requirements. Figure 8 As shown in the figure, the three-direction 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 Manual 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 ; Dangling z =(9.2+9.8)m / s 2 . As attached Fig. 9 and attached Fig.10As shown in the figure, the critical stress is compared with the yield strength of the material to determine whether the tower has the risk of yielding. In the case of material yielding, the strain value and plastic area range are further analyzed to quantify the deformation risk of the structure. Based on the strain value, plastic area range, and screw hole edge state, it is finally determined whether the tower strength meets the design requirements.

[0065] Based on dynamic loads, considering the mechanical properties of flanges and towers, the critical stress is calculated as the core parameter for subsequent strength assessment. The critical stress is compared with the yield strength of the material to distinguish whether the tower is in an elastic deformation state. If yielding occurs, the residual performance of the structure is further analyzed by the strain value and the range of the plastic region. The strength state of the tower is finally confirmed based on whether the plastic region extends to key parts (such as the edge of the screw hole) and the size of the strain value. The three-directional motion acceleration reflects the impact of the swaying of the hull and the waves on the tower during transportation, including the longitudinal, transverse and vertical dimensions. The gravity acceleration reflects the continuous force of the tower's own weight on the structure. Dynamic loads are entered into the finite element model to calculate the transportation stress distribution of the flange and tower. The critical stress is the maximum stress value before the tower yields, and its size is affected by the combined effects of material properties, geometric structure and load distribution. The critical stress calculation needs to focus on the local stress concentration effect at the junction of the flange and the tower and the edge of the screw hole to improve the accuracy of the assessment. 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. eqv Divide by the material yield strength f of the tower or flange thickness yk , divided by the material safety factor γ m , the value obtained is less than or equal to 1, where the material safety factor γ m 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 yield strength, the tower only undergoes elastic deformation and can be restored to its original state after transportation, confirming that the strength meets the design requirements. When the critical stress is greater than or equal to the material yield strength, the flange or tower may enter a plastic deformation state, and further analysis of the residual deformation of the structure is required.

[0068] In the case of yielding, analyzing the relationship between strain value, plastic zone range and screw hole edge is a key step to further determine the safety of the structure. The total strain value ε can be evaluated according to IEC61400-6 to 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 effect on the structural connection performance. Check whether the plastic zone penetrates the flange or the barrel 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 plastic zone range. The plastic zone evaluation needs to be combined with material properties, local geometric details and dynamic load effects to avoid the one-sidedness of the analysis results.

[0069] The conditions for meeting the design requirements are that the total strain value ε is 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 for the total strain value ε is as follows:

[0070]

[0071] Where E is the elastic modulus of the material, σ eqv is the equivalent stress, f yk is the material yield strength of the tower or flange thickness. The conditions that do not meet the design requirements are that the total strain value ε is greater than or equal to 1%, or the plastic area penetrates the flange or the wall, or the plastic area extends to the edge of the screw hole, all of which indicate that the structural strength does not meet the standard. The strength assessment method gradually determines the strength state of the tower during sea transportation through dynamic load calculation, yield strength comparison, strain and plastic area analysis. Through the above assessment conditions, a clear basis for judging the potential failure risk during sea transportation can be provided.

[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 the seaborne tower comprises a first establishing module 31, a second establishing module 32 and an assessment module 33.

[0073] The first building module 31 is used to obtain physical dimension data of the tower and the supporting tooling, 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 tooling 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 tooling, combined with the geometric model;

[0075] The evaluation module 33 is used to evaluate the strength of the tower according to the motion accelerations 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, the electronic device comprising: 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 acquired, 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 material constitutive models of the tower and the supporting tooling, combined 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.

[0079] The present invention provides a computer-readable storage medium, on which computer program instructions are stored. 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 according to respective material constitutive models of the tower and the supporting tooling and in combination with the geometric model; and strength evaluation of the tower is performed according to 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 hereinabove about the method of the present invention may also be similarly applied to the device 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 parts or units of the device or system of the present invention.

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

[0082] In one embodiment, a computer device is provided, which includes a memory and a processor, and the memory stores computer instructions executable by the processor, and the computer instructions instruct the processor to execute each step of the method of the embodiment of the present invention when executed by the processor. The computer device can be a server, a terminal, or any other electronic device with necessary computing and / or processing capabilities in a broad sense. In one embodiment, the computer device may include a processor, a memory, a network interface, a communication interface, etc. connected through a system bus. The processor of the computer device can be used to provide necessary computing, processing and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. may 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 the computer program in the non-volatile storage medium. The network interface and the communication interface of the computer device can be used to connect and communicate with external devices through a network. The steps of the method of the present invention are executed by the processor.

[0083] The present invention may be implemented as a computer-readable storage medium having a computer program stored thereon, which causes the steps of the method of an embodiment of the present invention to be executed when executed by a processor. 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, may be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations may be performed by one or more computer devices or processors, and one or more other method steps / operations may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step / operation, or perform two or more method steps / operations.

[0084] It can be understood by a person skilled in the art that the method steps of the present invention can be completed by instructing related hardware such as a computer device or a processor through a computer program, and the computer program can be stored in a non-temporary computer-readable storage medium, and the steps of the present invention are executed when the computer program is executed. Depending on the circumstances, any reference to memory, storage, database or other media in this article may include non-volatile and / or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (by simulating the force analysis of the tower in sea transportation, accurately evaluating whether the strength of the tower meets the design requirements, 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 transportation tower PROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid state disk, 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 all possible combinations of these technical features are not described, any combination of these technical features should be considered to be covered by this specification as long as there is no contradiction in such combination.

[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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned 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 strength assessment method for a marine tower, characterized in that: include: Acquire 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; According to the material constitutive models of the tower and the supporting fixture, respectively, combined with the geometric model, a physical simulation model of the tower is established; The strength of the tower is evaluated according to the motion acceleration in three directions during sea transportation and the gravity acceleration of the tower itself.

2. The strength assessment method of a marine tower according to claim 1, characterized in that: 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 support fixtures are arranged at the lower edge of the tower to support the tower, and the contact position between the support fixture and the tower is preferably set as a flange.

3. The strength assessment method of a marine tower according to claim 1, characterized in that: The physical simulation model is established, comprising: Laying a soft material between the tower frame and the supporting tooling, the soft material and the tower are connected by friction contact, and the soft material includes nylon material and rubber material; The tower and the 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 a rubber material, wherein 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.

4. The strength assessment method of a marine tower according to claim 3, characterized in that: The physical simulation model is established, further comprising: Use hexahedron elements to simulate towers, flanges and soft materials, and use hexahedron elements or tetrahedron elements to simulate supporting tooling; The tower, flange, soft material and supporting tooling are meshed, where the mesh density around the flange is greater than the mesh density of the supporting tooling, the mesh density of the non-contact area between the tower and the supporting tooling is set to transitional density, and at least 5 unit meshes are divided around the edge of any bolt hole of the flange.

5. The strength assessment method of a marine tower according to claim 1, characterized in that: 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 adopted as the three-dimensional motion acceleration during sea transportation.

6. The strength assessment method of a marine tower according to claim 3, characterized in that: The strength assessment of the tower is performed according to the motion accelerations in three directions and the gravity acceleration of the tower itself during the sea transportation process, and is characterized by comprising: According to the motion acceleration of the three directions in 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 first rigid material of the flange and 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%, 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 barrel 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 runs through 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.

7. A strength assessment device for a marine tower, characterized in that: include: A first building module is used to obtain physical size data of the tower and the supporting tooling, 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 tooling 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 respectively, in combination with the geometric model; The evaluation module is used to evaluate the strength of the tower according to the motion accelerations in three directions during the sea transportation and the gravity acceleration of the tower itself.

8. The strength assessment device for a marine tower according to claim 7, characterized in that: The first establishing module, the second establishing module and the evaluating module are controlled to execute the strength evaluation method of the marine tower according to any one of claims 1 to 6.

9. 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 that is communicatively connected to the memory through the communication interface, the electronic device implements the strength assessment method for a seaborne tower according to any one of claims 1 to 6.

10. 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 6.

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