A method and system for calculating the action of a fishing rod

Abstract

The present invention provides a method and system for calculating the action of a fishing rod. The method includes the following steps: simulating the actual winding process of carbon fiber cloth by means of parametric modeling, inputting the parameters of the carbon fiber cloth and the mold parameters, setting the number of cross-sections of the fishing rod, solving the shape of each cross-section after the carbon fiber cloth is wound, and generating a parametric model of the overall fishing rod by cross-section lofting; calculating the modulus of the composite material for the parametric model, and accurately calculating the axial stiffness and bending stiffness; compiling a structural calculation program based on the parametric model to conduct an integrated design construction of refined modeling and structural mechanics analysis; encapsulating the structural calculation program into a software system to realize inputting design parameters and outputting the corresponding action curve of the fishing rod. The present invention implants a self-compiled calculation program into the parametric modeling platform. Only the original data such as design parameters and force loads need to be defined, and no manual operation is required, achieving an integrated design construction of refined modeling and structural mechanics analysis, while improving the calculation speed and ensuring the calculation accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of fishing rod design, and more particularly, to a method and system for calculating the action of a fishing rod. Background Art

[0002] The action curve refers to the curved line formed when a fishing rod bears an end vertical load, and the softness and hardness of a fishing rod can be judged through the action curve.

[0003] Currently, the related research on the action curve mainly adopts the finite element method and the method of solving the deflection curve control equation. When using the traditional finite element method for analysis and calculation, a series of fixed processes such as modeling, defining and assigning material properties, dividing the mesh, defining the analysis step, and defining the load and boundary conditions are required; the calculation difficulty lies in the material property calculation of carbon fiber composite materials, and it is easy to not converge for large deformation non-linear problems such as fishing rods. This not only requires strict professional skills for designers, but also, combined with experimental verification, it is found that the calculation accuracy is not high. Fishing rod manufacturers mainly rely on fishing rod action tests to obtain the action curve. However, since the fishing rod needs to be manufactured in advance for the test, the costs of molds, design, and materials are relatively high, and the obtained action curve often cannot meet the design requirements quickly, and repeated iterative tests are required, wasting time, manpower, and material resources, and the efficiency is low. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a method for simulating the actual process of rolling carbon fiber cloth in actual production, forming a parametric modeling method for carbon fiber fishing rods, compiling a structural calculation program in combination with composite material mechanics, and combining it with the parametric model of the carbon fiber fishing rod to achieve the integration of refined modeling and structural analysis, accurately and quickly calculate the action of the fishing rod, and encapsulate the entire calculation process to conveniently, quickly, and accurately predict the action curve of the fishing rod according to the fishing rod design parameters.

[0005] The present invention provides a method for calculating the action of a fishing rod, including the following steps:

[0006] S1. Use a parametric modeling method to simulate the actual rolling process of carbon fiber cloth, input carbon fiber cloth parameters, set the number of cross-sections of the fishing rod, solve the shape of each cross-section after the carbon fiber cloth is rolled, and generate a parametric model of the overall fishing rod by section lofting;

[0007] The present invention uses a parametric modeling method to simulate the actual rolling process of carbon fiber cloth and takes into account the carbon fiber direction, making the generated parametric model more refined;

[0008] S2. Calculate the modulus of the parametric model according to the theoretical knowledge of composite material mechanics, and accurately calculate the axial stiffness (tensile and compressive stiffness) and bending stiffness of the fishing rod;

[0009] The modulus of different cross-sections of the fishing rod after winding with carbon fiber cloth is calculated using the theory of composite material mechanics; the elastic modulus E, cross-sectional area A, and moment of inertia I of the cross-section are calculated, and the tensile and compressive stiffness EA and bending stiffness EI of the cross-section are solved;

[0010] Using the hybrid method, based on the known longitudinal and transverse tensile moduli of the carbon fiber cloth, the elastic modulus E of the cross-section is calculated by using the volume fraction and fiber direction of different carbon fiber cloths for the cross-section;

[0011] According to the number of winding layers of carbon fiber cloth in the cross-section, the thickness of different carbon fiber cloths, and the diameter of the mold, the cross-sectional area A and moment of inertia I of the cross-section are calculated, and then the tensile and compressive stiffness EA and bending stiffness EI of the fishing rod cross-section are obtained;

[0012] S3. Compile a structural calculation program based on the parametric model, and conduct an integrated design construction of refined modeling and structural mechanics analysis;

[0013] Use the vectorized finite element algorithm to calculate the tuning performance, use beam elements to conduct structural mechanics analysis and calculation of the fishing rod, and substitute the modulus parameters and stiffness parameters calculated and solved in step S2 into the structural calculation program to calculate the tuning performance of the fishing rod;

[0014] S4. Package the structural calculation program constructed by the integrated design into a software system, and the software system realizes inputting design parameters and outputting the corresponding fishing rod tuning performance curve.

[0015] Furthermore, the carbon fiber cloth parameters in step S1 include: the number of carbon fiber cloth layers, the layer thickness of the carbon fiber cloth, the size of the carbon fiber cloth, the laying order of the carbon fiber cloth, the carbon fiber direction, and the mold parameters, and a fishing rod model is generated by simulating the actual production process.

[0016] Furthermore, the method for generating the parametric model of the overall fishing rod in step S1 includes:

[0017] For fishing rods of different lengths, references for the number of nodes selected after optimization algorithm optimization are given, and the optimal number of nodes is selected under the condition of meeting the simulation accuracy to accelerate the calculation speed.

[0018] Furthermore, the fishing rod is wound by stacking three layers of carbon fiber cloth.

[0019] Furthermore, the method for selecting the number of nodes includes:

[0020] Define the fishing rod design parameters, and divide the fishing rod into different sections according to the cross-section where the number of carbon cloths changes; taking three layers of carbon cloth as an example, it is divided into three sections, which are respectively taken as sections A, B, and C. The number of cross-sections, that is, the number of calculation nodes, is defined for each section, and 5, 9, and 6 nodes are respectively taken for sections A, B, and C to calculate the tuning performance of the fishing rod.

[0021] The present invention uses the defined parameters as the actual design parameters to customize the fishing rod and conducts experimental verification. The experimental results are in good agreement with the calculated results of the defined parameters.

[0022] Further, the method of using the vector finite element algorithm for tone calculation in step S3 includes:

[0023] Based on the vector finite element theory, the fishing rod is regarded as a two-dimensional beam element, and a self-written program is used to perform iterative calculations of the linear displacement or angular displacement of the unit nodes, the internal force or internal moment of the unit nodes, and the total linear displacement or angular displacement of the next particle to obtain the tone curve of the fishing rod under any parameters.

[0024] Further, the software system in step S4 can also output the corresponding 3D model diagram of the fishing rod and the stress conditions of any cross-section according to the input parameters, which are used as a reference for design and are of reference significance for design.

[0025] The present invention also provides a fishing rod tone calculation system that executes the fishing rod tone calculation method as described above, including:

[0026] Parametric model modeling module: Using the parametric modeling method to simulate the actual winding process of the carbon fiber cloth, inputting the carbon fiber cloth parameters, setting the number of cross-sections of the fishing rod, solving the shape of each cross-section after the carbon fiber cloth is wound, and generating a parametric model of the overall fishing rod using section lofting;

[0027] Structural mechanics analysis and calculation module: Calculating the modulus of the parametric model according to the theory of composite material mechanics, and accurately calculating the axial stiffness (tensile and compressive stiffness) and bending stiffness of the fishing rod;

[0028] Structural calculation program compilation module: Compiling a structural calculation program based on the parametric model to carry out an integrated design of refined modeling and structural mechanics analysis;

[0029] Encapsulated software system module: Used to encapsulate the structural calculation program of the integrated design into a software system, and the software system realizes inputting design parameters and outputting the corresponding fishing rod tone curve.

[0030] The thesis "Calculation and Parameter Optimization of Fishing Rod Tone Curve Based on Vector Finite Element", Zhao Xiaoqian, proposed a method of calculating the fishing rod tone curve based on the vector finite element in combination with a parametric model. This thesis has the following disadvantages:

[0031] 1) There is a deviation between the parametric model and the actual production process, and the carbon fiber angle problem after the carbon fiber cloth is wound is not considered (this will have a greater impact on the modulus calculation), resulting in inaccurate modulus calculation;

[0032] 2) Only the thicknesses of different cross-sections are output from the parametric model, and then the thicknesses need to be further processed across platforms to calculate the fishing rod tuning curve;

[0033] 3) The bending stiffness is not considered when using the vector finite element method;

[0034] 4) Multiple manual operations are required in the overall process calculation, which is time-consuming and laborious.

[0035] The patent document (CN202111123985.3) "Simulation Method and System for Calculating Fishing Rod Tuning Curve" proposes an algorithm centered on calculating the fishing rod tuning curve through the large deformation theory of a cantilever beam. The differences between the fishing rod tuning calculation method of the present invention and the patent document include:

[0036] 1) The core method of the present invention uses the vector finite element method that is more suitable for calculating large displacement problems;

[0037] 2) Different calculation ideas are adopted. The above patent document calculates the modulus by a program for the input parameters, while the present invention forms a model according to the parameters to simulate the actual production process and then calculates and outputs the modulus for the model. Comparatively, the calculation result of the present invention is more accurate.

[0038] For the tuning calculation of corresponding parameters, the paper document takes 30 minutes, the patent document takes 8 minutes, and the present invention only takes 1 minute.

[0039] It can be seen that the fishing rod tuning calculation method of the present invention is more accurate and faster. By contacting the fishing rod manufacturing factory for fishing rod customization, the calculation accuracy is verified through experiments, and specific data schemes and data supports can be given.

[0040] The present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the fishing rod tuning calculation method as described above are implemented.

[0041] The present invention also provides a computer device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the fishing rod tuning calculation method as described above are implemented.

[0042] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0043] The present invention implants a self-written calculation program into the parametric modeling platform. Only the original data such as design parameters and loading needs to be defined, and no manual operation is required, achieving an integrated design of refined modeling and structural mechanics analysis. While improving the calculation speed, the calculation accuracy is ensured, and the calculation efficiency is improved. Description of the Drawings

[0044] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention.

[0045] In the drawings:

[0046] Figure 1 is a flowchart of a method for calculating the fishing rod flexibility of the present invention;

[0047] Figure 2 is a schematic diagram of the composition of the computer device according to an embodiment of the present invention;

[0048] Figure 3 is a schematic diagram of a model of three-layer carbon cloth stacked and wound according to an embodiment of the present invention;

[0049] Figure 4 is a schematic diagram of a model for generating an overall fishing rod model by sectional lofting according to an embodiment of the present invention;

[0050] Figure 5 is a schematic diagram of a model of dividing the fishing rod into three sections A, B, and C according to an embodiment of the present invention;

[0051] Figure 6 is a schematic diagram of the result of calculating the fishing rod flexibility by taking 5, 9, and 6 nodes for the three sections A, B, and C of the fishing rod according to an embodiment of the present invention;

[0052] Figure 7 is a flowchart of the algorithm for calculating the fishing rod flexibility curve according to an embodiment of the present invention. Detailed Embodiments

[0053] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and products consistent with some aspects of the present disclosure as detailed in the appended claims.

[0054] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0055] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0056] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0057] The embodiments of the present invention provide a method for calculating the fishing rod flexibility. Refer to Figure 1 as shown, which includes the following steps:

[0058] S1. Use parametric modeling to simulate the actual winding process of the carbon fiber cloth, input the carbon fiber cloth parameters, set the number of cross-sections of the fishing rod, solve the shape of each cross-section after the carbon fiber cloth is wound, and generate a parametric model of the overall fishing rod using cross-section lofting. Refer to Figure 4 as shown;

[0059] The present invention uses parametric modeling to simulate the actual winding process of the carbon fiber cloth and takes into account the carbon fiber direction, making the generated parametric model more refined;

[0060] The carbon fiber cloth parameters include: the number of carbon fiber cloth layers, the thickness of the carbon fiber cloth layer, the size of the carbon fiber cloth, the laying order of the carbon fiber cloth, the carbon fiber direction, and the mold parameters, and a fishing rod model is generated by simulating the actual production process;

[0061] The method for generating the parametric model of the overall fishing rod includes:

[0062] For fishing rods of different lengths, a reference for the number of nodes selected after optimization by the optimization algorithm is given, and the optimal number of nodes is selected under the condition of meeting the simulation accuracy to speed up the calculation speed;

[0063] In this embodiment, the number of nodes is selected under the condition of meeting the simulation accuracy. Refer to Figure 3 as shown, the fishing rod is wound with three layers of carbon fiber cloth stacked. Define the fishing rod design parameters. Refer to Figure 5 as shown, the fishing rod is divided into three sections, namely A, B, and C. The number of cross-sections, that is, the number of calculation nodes, is defined for each section respectively; 5, 9, and 6 nodes are taken for the three sections A, B, and C respectively to calculate the fishing rod flexibility. Refer to Figure 6 as shown, the abscissa is the fishing rod length, and the ordinate is the vertical deformation of the fishing rod, and the units are both m.

[0064] In this embodiment, the defined parameters are used as the actual design parameters to customize the fishing rod for experimental verification, and the experimental results are in good agreement with the calculation results of the defined parameters;

[0065] S2. Calculate the modulus of the parametric model according to the theoretical knowledge of composite material mechanics, and accurately calculate the axial stiffness (tensile and compressive stiffness) and bending stiffness of the fishing rod;

[0066] Use the composite material mechanics theory to calculate the modulus of different cross-sections of the fishing rod after winding the carbon fiber cloth; calculate the elastic modulus E, cross-sectional area A, and moment of inertia I of the cross-section, and solve the tensile and compressive stiffness EA and bending stiffness EI of the cross-section;

[0067] Adopt the hybrid method, and calculate the elastic modulus E of the cross-section according to the longitudinal and transverse tensile moduli of the known carbon fiber cloth and the volume fraction and fiber direction of different carbon fiber cloths for the cross-section;

[0068] According to the number of winding layers of the carbon fiber cloth of the cross-section, the thickness of different carbon fiber cloths, and the diameter of the mold, calculate the cross-sectional area A and moment of inertia I of the cross-section, and then calculate the tensile and compressive stiffness EA and bending stiffness EI of the fishing rod cross-section;

[0069] S3. Compile a structural calculation program based on the parametric model, and carry out an integrated design construction of refined modeling and structural mechanics analysis;

[0070] Adopt the vector finite element algorithm to calculate the tune, use the beam element to carry out the structural mechanics analysis and calculation of the fishing rod, and substitute the modulus parameters and stiffness parameters calculated and solved in step S2 into the structural calculation program to calculate the tune of the fishing rod;

[0071] The method of using the vector finite element algorithm to calculate the tune is as follows:

[0072] Based on the vector finite element theory, regard the fishing rod as a two-dimensional beam element, use a self-compiled program to perform iterative calculations of the linear displacement or angular displacement of the element nodes, the internal force or internal moment of the element nodes, and the linear displacement or angular displacement of the next particle bus, and obtain the fishing rod tune curve under any parameters;

[0073] S4. Package the structural calculation program constructed by the integrated design into a software system, and the software system realizes inputting design parameters and outputting the corresponding fishing rod tune curve;

[0074] The software system can also output the corresponding 3D model diagram of the fishing rod and the force condition of any cross-section according to the input parameters, which is used as a reference for the design and is of reference significance for the design.

[0075] The embodiment of the present invention also provides a fishing rod tune calculation system, which executes the fishing rod tune calculation method as described above, including:

[0076] Parametric model modeling module: Simulate the actual winding process of carbon fiber cloth by using parametric modeling method, input the parameters of carbon fiber cloth, set the number of cross-sections of the fishing rod, solve the shape of each cross-section after the carbon fiber cloth is wound, and generate a parametric model of the overall fishing rod by cross-section lofting;

[0077] Structural mechanics analysis and calculation module: Calculate the modulus of the parametric model according to the theoretical knowledge of composite material mechanics, and accurately calculate the axial stiffness (tensile and compressive stiffness) and bending stiffness of the fishing rod;

[0078] Structural calculation program compilation module: Compile a structural calculation program based on the parametric model, and conduct an integrated design and construction of refined modeling and structural mechanics analysis;

[0079] Encapsulated software system module: Used to encapsulate the structural calculation program constructed by integrated design into a software system, and the software system realizes inputting design parameters and outputting the corresponding fishing rod tuning curve.

[0080] For the tuning calculation of corresponding parameters, the embodiment of the present invention only takes 1 minute. The fishing rod tuning calculation method of the present invention is accurate and rapid. By contacting the fishing rod manufacturing factory for fishing rod customization, the calculation accuracy is verified through experiments, and specific data solutions and data supports can be given.

[0081] The embodiment of the present invention adopts a self-compiled calculation program implanted into the parametric modeling platform. Only the original data such as design parameters and loading need to be defined, and no manual operation is required, achieving an integrated design and construction of refined modeling and structural mechanics analysis, ensuring the calculation accuracy while improving the calculation speed and enhancing the calculation efficiency.

[0082] See Figure 7 The algorithm flow chart of the fishing rod tuning curve calculation in the embodiment of the present invention is shown as follows.

[0083] The embodiment of the present invention also provides a computer device, Figure 2 which is the structural schematic diagram of a computer device provided by the embodiment of the present invention; see the attached drawing Figure 2 As shown, the computer device includes: an input device 23, an output device 24, a memory 22, and a processor 21; the memory 22 is used to store one or more programs; when the one or more programs are executed by the one or more processors 21, the one or more processors 21 implement the fishing rod tuning calculation method provided by the above embodiment; wherein the input device 23, the output device 24, the memory 22, and the processor 21 can be connected through a bus or other means, Figure 2 and the connection through the bus is taken as an example herein.

[0084] The memory 22, as a readable and writable storage medium of a computing device, can be used to store software programs and computer-executable programs, such as program instructions corresponding to the fishing rod flexibility calculation method described in the embodiments of the present invention. The memory 22 may mainly include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function. The data storage area can store data created according to the use of the device, etc. In addition, the memory 22 may include high-speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 22 may further include a memory remotely provided with respect to the processor 21, and these remote memories can be connected to the device through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0085] The input device 23 can be used to receive input digital or character information and generate key signal inputs related to user settings and function controls of the device. The output device 24 may include a display device such as a display screen.

[0086] The processor 21 executes various functional applications and data processing of the device by running software programs, instructions, and modules stored in the memory 22, that is, implements the above-mentioned fishing rod flexibility calculation method.

[0087] The above-provided computer device can be used to execute the fishing rod flexibility calculation method provided in the above embodiments and has corresponding functions and beneficial effects.

[0088] An embodiment of the present invention also provides a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute the fishing rod flexibility calculation method provided in the above embodiment when executed by a computer processor. The storage medium is any of various types of memory devices or storage devices, including: installation media such as CD-ROMs, floppy disks, or magnetic tape devices; computer system memories or random access memories such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc.; non-volatile memories such as flash memories, magnetic media (such as hard disks or optical storage); registers or other similar types of memory elements, etc.; the storage medium may also include other types of memories or combinations thereof; in addition, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system, and the second computer system is connected to the first computer system through a network (such as the Internet); the second computer system may provide program instructions to the first computer for execution. The storage medium includes two or more storage media that may reside in different locations (e.g., in different computer systems connected through a network). The storage medium may store program instructions (e.g., specifically implemented as a computer program) executable by one or more processors.

[0089] Of course, for a storage medium containing computer-executable instructions provided by an embodiment of the present invention, the computer-executable instructions are not limited to the fishing rod flexibility calculation method described in the above embodiment, and may also execute related operations in the fishing rod flexibility calculation methods provided by any embodiment of the present invention.

[0090] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

[0091] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for calculating the flexibility of a fishing rod, characterized in that, It includes the following steps: S1. Use the parametric modeling method to simulate the actual winding process of the carbon fiber cloth, input the carbon fiber cloth parameters, set the number of cross-sections of the fishing rod, solve the shape of each cross-section after the carbon fiber cloth is wound, and generate a parametric model of the overall fishing rod by cross-section lofting; S2. Calculate the modulus of the parametric model according to the theoretical knowledge of composite material mechanics, and accurately calculate the axial stiffness and bending stiffness of the fishing rod; Use the composite material mechanics theory to calculate the modulus of different cross-sections of the fishing rod after the carbon fiber cloth is wound; Calculate the elastic modulus E, cross-sectional area A and moment of inertia I of the cross-section, and solve the tensile and compressive stiffness EA and bending stiffness EI of the cross-section; S3. Compile a structural calculation program based on the parametric model, and carry out an integrated design construction of refined modeling and structural mechanics analysis; Use the vector finite element algorithm to calculate the tuning performance, use the beam element to carry out the structural mechanics analysis and calculation of the fishing rod, and substitute the modulus parameters and stiffness parameters calculated and solved in step S2 into the structural calculation program to calculate the tuning performance of the fishing rod; S4. Package the structural calculation program constructed by the integrated design into a software system, and the software system realizes inputting design parameters and outputting the corresponding fishing rod tuning performance curve.

2. The fishing rod flexibility calculation method according to claim 1, characterized in that The carbon fiber cloth parameters in step S1 include: the number of carbon fiber cloth layers, the thickness of the carbon fiber cloth layer, the size of the carbon fiber cloth, the laying order of the carbon fiber cloth, the carbon fiber direction, and the mold parameters, and generate a fishing rod model by simulating the actual production process.

3. The method for calculating the fishing rod flexibility according to claim 1, wherein, The method for generating the parametric model of the overall fishing rod in step S1 includes: For fishing rods of different lengths, give a reference for selecting the number of nodes after optimization by the optimization algorithm, select the optimal number of nodes under the condition of meeting the simulation accuracy, and speed up the calculation speed.

4. The method for calculating the fishing rod flexibility according to claim 3, wherein, The fishing rod is wound by stacking three layers of carbon fiber cloth.

5. The fishing rod flexibility calculation method according to claim 4, characterized in that, The method for selecting the number of nodes includes: Define the fishing rod design parameters, divide the fishing rod into different sections according to the cross-section at the change of the carbon cloth quantity; taking three layers of carbon cloth as an example, it is divided into three sections, which are taken as sections A, B, and C respectively. The number of cross-sections, that is, the number of calculation nodes, is defined for each section, and 5, 9, and 6 nodes are taken for sections A, B, and C respectively to calculate the tuning performance of the fishing rod.

6. The fishing rod flexibility calculation method according to claim 1, characterized in that, The method for calculating the tuning performance by using the vector finite element algorithm in step S3 includes: Based on the vector finite element theory, regard the fishing rod as a two-dimensional beam element, use a self-compiled program to perform iterative calculations of the linear displacement or angular displacement of the element nodes, the internal force or internal moment of the element nodes, and the total linear displacement or angular displacement of the next particle, and obtain the fishing rod tuning performance curve under any parameters.

7. The fishing rod flexibility calculation method according to claim 1, characterized in that The software system in step S4 can also output the corresponding 3D model diagram of the fishing rod and the force condition of any cross-section according to the input parameters, which is used as a reference for design.

8. A fishing rod flexibility calculation system, characterized in that, Executing the fishing rod tuning performance calculation method according to any one of claims 1-7 includes: Parametric model modeling module: Use the parametric modeling method to simulate the actual winding process of the carbon fiber cloth, input the carbon fiber cloth parameters, set the number of cross-sections of the fishing rod, solve the shape of each cross-section after the carbon fiber cloth is wound, and generate a parametric model of the overall fishing rod by cross-section lofting; Structural mechanics analysis and calculation module: Calculate the modulus of the parametric model according to the theoretical knowledge of composite material mechanics, and accurately calculate the axial stiffness and bending stiffness of the fishing rod; Structural calculation program compilation module: Compile a structural calculation program based on the parametric model, and conduct an integrated design and construction of refined modeling and structural mechanics analysis; Encapsulated software system module: Used to encapsulate the structural calculation program constructed by the integrated design into a software system, and the software system realizes inputting design parameters and outputting the corresponding fishing rod tuning curve.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it realizes the steps of the fishing rod tuning calculation method described in any one of claims 1-7.

10. A computer device, the computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it realizes the steps of the fishing rod tuning calculation method described in any one of claims 1-7.

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