A method, system and device for calculating a sway amount of a high-lift structure

Abstract

This invention relates to a method, system, and apparatus for calculating the sway of a high-lift structure. The method includes: establishing a finite element simulation model based on the actual structural form of the high-lift structure, performing finite element simulation analysis on the model to obtain basic response data; establishing a theoretical calculation model based on the assembly gap characteristics between tower sections in the high-lift structure, and calculating additional sway based on the theoretical calculation model; and superimposing the basic response data and the additional sway to obtain the calculated sway of the high-lift structure. This invention, by establishing a nonlinear contact model in the finite element simulation that does not consider assembly gaps, and combining this with theoretical calculations for assembly gaps, calculates the sway of the high-lift structure. This avoids underestimating the sway, makes the calculation results closer to actual working conditions, reduces the complexity of finite element modeling and calculation, and improves the stability and engineering applicability of the sway calculation.

Description

Technical Field

[0001] This invention relates to the field of sway calculation, and specifically to a method, system, and apparatus for calculating the sway of a high-lift structure. Background Technology

[0002] As engineering equipment develops towards higher precision and reliability, the installation height of related equipment is gradually increasing to meet the demands of complex operating environments. After being lifted to a considerable height, the structural flexibility of such structures significantly increases, while system stability decreases. Under the combined effects of load changes, drive mechanism movements, and external disturbances, noticeable swaying is easily generated. The magnitude of swaying in high-lift structures directly affects the operational accuracy, safety performance, and structural reliability of the equipment. Therefore, accurate calculation and evaluation of its swaying has significant engineering application value.

[0003] In existing technologies, the analysis methods for the sway of high-lift structures mainly include theoretical calculations, experimental tests, and analysis methods based on finite element simulations. Among them, theoretical calculation methods are usually based on simplified mechanical models, which are difficult to accurately reflect the true dynamic characteristics of high-lift structures under complex working conditions. Although experimental testing methods can obtain more intuitive results, they suffer from problems such as high testing costs, long testing cycles, and difficulty in covering multiple working conditions, which limit their application in the engineering design stage.

[0004] Finite element simulation (FEM) is widely used for analyzing the strength, stiffness, and dynamic characteristics of high-lift structures due to its advantages in structural modeling and mechanical analysis. However, in the FEM modeling process, idealized connection methods are often used, assuming that the connections between the tower sections of the high-lift structure are rigid, without fully considering the assembly gaps between the tower sections and their impact on structural sway. Summary of the Invention

[0005] This invention provides a method, system, and apparatus for calculating the sway of a high-lift structure, in order to solve at least one of the above-mentioned technical problems.

[0006] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A method for calculating the sway of a high-lift structure, comprising: Based on the actual structural form of the high-lift structure, a finite element simulation model containing nonlinear contact relationships is established, and finite element simulation analysis is performed on the finite element simulation model to obtain basic response data for characterizing the swaying characteristics of the structure. Based on the assembly gap characteristics between tower sections in a high-lift structure, a theoretical calculation model is established to characterize the influence of the assembly gap on the structural sway, and the additional sway introduced by the assembly gap is calculated according to the theoretical calculation model. The basic response data is superimposed with the additional sway to obtain the calculation result of the sway of the high-lift structure considering the influence of assembly gap.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the finite element simulation model includes a nonlinear contact model for describing the relationship between contact forces and relative motion between every two adjacent tower sections in the high-lift structure.

[0009] Furthermore, the nonlinear contact model is established, specifically including: The nonlinear contact model is established by creating frictional contact pairs on the contact surfaces of two adjacent tower sections under wind load.

[0010] Furthermore, the assembly gap parameters between tower sections are not introduced during the establishment of the finite element simulation model.

[0011] Furthermore, finite element simulation analysis is performed on the finite element simulation model, specifically including: Load conditions and motion conditions corresponding to the working process of the high-lift structure are applied to the finite element simulation model to perform nonlinear finite element simulation analysis on the finite element simulation model and obtain the displacement response results of the high-lift structure under various working conditions. From the displacement response results, key nodes are selected to characterize the overall swaying characteristics of the high-lift structure, and the swaying response data of the key nodes are extracted as the basic response data.

[0012] Furthermore, the key node is specifically the top of each tower section.

[0013] Furthermore, based on the assembly gap characteristics between tower sections in a high-lift structure, a theoretical calculation model is established to characterize the influence of assembly gaps on structural sway, specifically including: Based on the assembly accuracy between adjacent tower sections in the high-lift structure, determine the assembly gap parameters between adjacent tower sections; A theoretical calculation model is established based on the assembly gap parameters to characterize the influence of assembly gap on structural sway.

[0014] Furthermore, the theoretical calculation model is expressed as follows: ; In the formula, For the first The additional sway of each tower section, For the first The length of the overlapping portion of each tower section, For assembly clearance parameters, For the first The length of the protruding portion of each tower section.

[0015] Based on the above-mentioned method for calculating the sway of a high-lift structure, the present invention also provides a system for calculating the sway of a high-lift structure.

[0016] A system for calculating the sway of a high-lift structure includes: The finite element simulation module is used to establish a finite element simulation model containing nonlinear contact relationships based on the actual structural form of the high-lift structure, and to perform finite element simulation analysis on the finite element simulation model to obtain basic response data for characterizing the swaying characteristics of the structure. The theoretical calculation module is used to establish a theoretical calculation model to characterize the influence of the assembly gap on the structural sway based on the assembly gap characteristics between tower sections in a high-lift structure, and to calculate the additional sway introduced by the assembly gap according to the theoretical calculation model. The superposition module is used to superimpose the basic response data with the additional sway amount to obtain the calculation result of the sway amount of the high-lift structure considering the influence of assembly gap.

[0017] Based on the above-mentioned method for calculating the sway of a high-lift structure, the present invention also provides a device for calculating the sway of a high-lift structure.

[0018] A device for calculating the sway of a high-lift structure includes a processor, a memory, and a computer program stored in the memory. When the computer program is executed by the processor, it implements the high-lift structure sway calculation method as described above.

[0019] The beneficial effects of this invention are as follows: This invention provides a method, system, and device for calculating the sway of a high-lift structure. It combines finite element simulation with theoretical calculation to calculate the sway of the high-lift structure. First, simulation analysis is used to calculate the sway of the high-lift structure under different working conditions. Then, theoretical calculation is used to determine the influence of the gap between tower sections on the structural sway. The actual sway of the structure is obtained by superimposing these factors. Specifically, by establishing a nonlinear contact model in the finite element simulation that does not consider assembly gaps, and combining this with theoretical calculations for assembly gaps, the sway of the high-lift structure can be calculated. This avoids underestimating the sway, making the calculation results closer to actual working conditions, and providing a reliable basis for the design and safety assessment of high-lift structures. Furthermore, by combining nonlinear finite element simulation analysis with theoretical calculations, the influence of assembly gaps is independently quantified and integrated with the simulation results, reducing the complexity of finite element modeling and calculation, and improving the stability and engineering applicability of the sway calculation method. Attached Figure Description

[0020] Figure 1 This is a flowchart of a method for calculating the sway of a high-lift structure according to the present invention. Figure 2This is a schematic diagram of the structure of the finite element simulation model; Figure 3 This is a schematic diagram of the nonlinear contact model. Figure 4 This is a schematic diagram of the theoretical calculation model; Figure 5 A schematic diagram of the calculation model for the additional sway of the second tower section; Figure 6 A schematic diagram of the calculation model for the additional sway of tower sections 2 to 5; Figure 7 This is a structural block diagram of a high-lift structure sway calculation system according to the present invention; Figure 8 This is a structural block diagram of a high-lift structure sway calculation device according to the present invention. Detailed Implementation

[0021] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0022] like Figure 1 As shown, a method for calculating the sway of a high-lift structure is characterized by comprising: Based on the actual structural form of the high-lift structure, a finite element simulation model containing nonlinear contact relationships is established, and finite element simulation analysis is performed on the finite element simulation model to obtain basic response data for characterizing the swaying characteristics of the structure. Based on the assembly gap characteristics between tower sections in a high-lift structure, a theoretical calculation model is established to characterize the influence of the assembly gap on the structural sway, and the additional sway introduced by the assembly gap is calculated according to the theoretical calculation model. The basic response data is superimposed with the additional sway to obtain the calculation result of the sway of the high-lift structure considering the influence of assembly gap.

[0023] This invention provides a method, system, and device for calculating the sway of a high-lift structure. The method combines finite element simulation with theoretical calculation to calculate the sway of the high-lift structure. First, the sway of the high-lift structure under different working conditions is calculated through simulation analysis. Then, the influence of the gap between tower sections on the sway of the structure is calculated theoretically. The actual sway of the structure is obtained by superimposing these factors.

[0024] The steps of the method of the present invention will be described in detail below.

[0025] The high-lift structure is a tower section structure formed by sequentially splicing multiple tower sections, which are interconnected by connecting structures. When calculating the sway, a finite element simulation model is first established based on the actual structural form of the high-lift structure, such as... Figure 2As shown. The finite element simulation model includes multiple sequentially connected tower sections, and a nonlinear contact model is established between adjacent tower sections to describe the relationship between contact forces and relative motion. This nonlinear contact model reflects the actual contact mechanical behavior between the tower sections. No assembly gap parameters between the tower sections are introduced during model building; that is, it is assumed that there is no initial gap between adjacent tower sections during the contact process. Figure 3 As shown.

[0026] Specifically, nonlinear contact refers to the contact between two tower sections under wind load, establishing a frictional contact pair on the contact surface. Frictional contact is the most commonly used nonlinear contact type in ANSYS. Its core characteristics are: Normal direction: separable (does not transmit tensile force) or closed (transmits compressive force); Tangential direction: exhibits static friction (adhesion) and dynamic friction (sliding), following the Coulomb friction model; It is strongly nonlinear: the contact state, stiffness, and frictional behavior change in real time with load / deformation, requiring iterative solutions.

[0027] In this preferred embodiment, the finite element simulation analysis of the finite element simulation model specifically includes: Load conditions and motion conditions (including self-weight load and working load) corresponding to the working process of the high-lift structure are applied to the finite element simulation model to perform nonlinear finite element simulation analysis on the finite element simulation model and obtain the displacement response results of the high-lift structure under various working conditions. From the displacement response results, key nodes are selected to characterize the overall swaying characteristics of the high-lift structure, and the swaying response data of the key nodes are extracted as the basic response data.

[0028] Specifically, the key point is the top of each section of the tower, which can be considered the highest point. The amount of swaying is the greatest here, making it the most dangerous, so it is chosen as the key node.

[0029] In this preferred embodiment, based on the assembly gap characteristics between tower sections in a high-lift structure, a theoretical calculation model is established to characterize the influence of the assembly gap on the structural sway, specifically including: Based on the assembly accuracy between adjacent tower sections in the high-lift structure, determine the assembly gap parameters between adjacent tower sections; A theoretical calculation model is established based on the assembly gap parameters to characterize the influence of assembly gap on structural sway; wherein, the structure of the theoretical calculation model is as follows: Figure 4 As shown.

[0030] The following describes the process of calculating the additional wobble introduced by assembly clearance based on a theoretical calculation model.

[0031] Taking the first and second tower sections as examples: Figure 5 As shown, let the length of the extended portion of the second tower section be... Let the length of the overlapping portion of the second tower section be... The assembly clearance parameter between the first tower section and the second tower section is: The deflection angle of the second tower section is β, and The additional sway of the second tower section is ,but .

[0032] Assume that the assembly clearance parameter between any two adjacent tower sections is... , No. The length of the extended portion of each tower section is , No. The length of the overlapping portion of each tower section is Based on this, the additional sway of the third tower section can be derived. Additional sway of the 4th tower section Additional sway of the 5th tower section etc., such as Figure 6 As shown; where: ; ; .

[0033] Therefore, we can deduce the first... Additional sway of each tower section : ; In the formula, For the first The additional sway of each tower section, For the first The length of the overlapping portion of each tower section, For assembly clearance parameters, For the first The length of the protruding portion of each tower section.

[0034] The additional sway of each tower section can be calculated based on the theoretical calculation model.

[0035] By superimposing the basic response data with the additional sway, the calculation result of the sway of the high-lift structure considering the influence of assembly clearance can be obtained.

[0036] Specifically, the basic response data is the basic sway at the top of each tower section, and the additional sway is also the additional sway at the top of each tower section. By adding the basic sway and the additional sway of each tower section, the calculation result of the sway of the high-lift structure considering the influence of assembly gaps can be obtained.

[0037] Based on the above-mentioned method for calculating the sway of a high-lift structure, the present invention also provides a system for calculating the sway of a high-lift structure.

[0038] like Figure 7 As shown, a system for calculating the sway of a high-lift structure includes: The finite element simulation module is used to establish a finite element simulation model containing nonlinear contact relationships based on the actual structural form of the high-lift structure, and to perform finite element simulation analysis on the finite element simulation model to obtain basic response data for characterizing the swaying characteristics of the structure. The theoretical calculation module is used to establish a theoretical calculation model to characterize the influence of the assembly gap on the structural sway based on the assembly gap characteristics between tower sections in a high-lift structure, and to calculate the additional sway introduced by the assembly gap according to the theoretical calculation model. The superposition module is used to superimpose the basic response data with the additional sway amount to obtain the calculation result of the sway amount of the high-lift structure considering the influence of assembly gap.

[0039] It should be noted that the specific functions of each module in the high-lift structure sway calculation system of the present invention are described in the specific steps of the high-lift structure sway calculation method of the present invention, and will not be repeated here.

[0040] Based on the above-mentioned method for calculating the sway of a high-lift structure, the present invention also provides a device for calculating the sway of a high-lift structure.

[0041] like Figure 8 As shown, a high-lift structure sway calculation device includes a processor, a memory, and a computer program stored in the memory. When the computer program is executed by the processor, it implements the high-lift structure sway calculation method as described above.

[0042] In other words, the high-lift structure sway calculation device of this disclosure may include, but is not limited to: a processor and a memory; the memory is used to store computer programs; the processor is used to execute the high-lift structure sway calculation method of this disclosure by calling the computer programs.

[0043] In one optional embodiment, a device for calculating the sway of a high-lift structure is provided, such as... Figure 8 As shown. Figure 8The high-lift structure sway calculation device shown includes a processor and a memory. The processor and memory are connected, for example, via a bus. Optionally, the high-lift structure sway calculation device may further include a transceiver, which can be used for data interaction between the high-lift structure sway calculation device and other electronic devices, such as sending and / or receiving data. It should be noted that in practical applications, the transceiver is not limited to one, and the structure of this high-lift structure sway calculation device does not constitute a limitation on the embodiments of this disclosure.

[0044] The processor can be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLC (Programmable Logic Controller), a FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with this disclosure. The processor can also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0045] A bus can include a pathway for transmitting information between the aforementioned components. The bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 8 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0046] The memory may be ROM (Read Only Memory) or other types of static storage devices capable of storing static information and instructions, RAM (Random Access Memory) or other types of dynamic storage devices capable of storing information and instructions, or EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited to these.

[0047] The memory stores application code (computer program) that executes the present disclosure, and its execution is controlled by a processor. The processor executes the application code stored in the memory to implement the content shown in the foregoing method embodiments.

[0048] The high-lift structure sway calculation device can also be a terminal device. The terminal device can be any device that can install applications, including at least one of smartphones, tablets, laptops, desktop computers, smart speakers, smartwatches, smart TVs, and smart in-vehicle devices.

[0049] It should be noted that, Figure 8 The illustrated high-lift structure sway calculation device is merely an example and should not impose any limitations on the function and scope of use of the embodiments disclosed herein.

[0050] This invention calculates the sway of a high-lift structure by establishing a nonlinear contact model in finite element simulation that does not consider assembly gaps, and combining this with theoretical calculations of assembly gaps. This avoids underestimating the sway and makes the calculation results closer to the actual working conditions, providing a reliable basis for the design and safety assessment of high-lift structures. In addition, by combining nonlinear finite element simulation analysis with theoretical calculations, the influence of assembly gaps is independently quantified and integrated with the simulation results, reducing the complexity of finite element modeling and calculation, and improving the stability and engineering applicability of the sway calculation method.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for calculating the sway of a high-lift structure, characterized in that, include: Based on the actual structural form of the high-lift structure, a finite element simulation model containing nonlinear contact relationships is established, and finite element simulation analysis is performed on the finite element simulation model to obtain basic response data for characterizing the swaying characteristics of the structure. Based on the assembly gap characteristics between tower sections in a high-lift structure, a theoretical calculation model is established to characterize the influence of the assembly gap on the structural sway, and the additional sway introduced by the assembly gap is calculated according to the theoretical calculation model. The basic response data is superimposed with the additional sway to obtain the calculation result of the sway of the high-lift structure considering the influence of assembly gap.

2. The method for calculating the sway of a high-lift structure according to claim 1, characterized in that, The finite element simulation model includes a nonlinear contact model for describing the relationship between contact forces and relative motion between every two adjacent tower sections in the high-lift structure.

3. The method for calculating the sway of a high-lift structure according to claim 2, characterized in that, Establishing the nonlinear contact model specifically includes: The nonlinear contact model is established by creating frictional contact pairs on the contact surfaces of two adjacent tower sections under wind load.

4. The method for calculating the sway of a high-lift structure according to claim 2, characterized in that, In the process of establishing the finite element simulation model, the assembly gap parameters between tower sections are not introduced.

5. The method for calculating the sway of a high-lift structure according to claim 1, characterized in that, The finite element simulation analysis of the finite element simulation model specifically includes: Load conditions and motion conditions corresponding to the working process of the high-lift structure are applied to the finite element simulation model to perform nonlinear finite element simulation analysis on the finite element simulation model and obtain the displacement response results of the high-lift structure under various working conditions. From the displacement response results, key nodes are selected to characterize the overall swaying characteristics of the high-lift structure, and the swaying response data of the key nodes are extracted as the basic response data.

6. The method for calculating the sway of a high-lift structure according to claim 5, characterized in that, The key nodes are specifically the tops of each tower section.

7. The method for calculating the sway of a high-lift structure according to claim 1, characterized in that, Based on the assembly gap characteristics between tower sections in a high-lift structure, a theoretical calculation model is established to characterize the influence of assembly gaps on structural sway, specifically including: Based on the assembly accuracy between adjacent tower sections in the high-lift structure, determine the assembly gap parameters between adjacent tower sections; A theoretical calculation model is established based on the assembly gap parameters to characterize the influence of assembly gap on structural sway.

8. The method for calculating the sway of a high-lift structure according to claim 7, characterized in that, The theoretical calculation model is expressed as follows: ; In the formula, For the first The additional sway of each tower section, For the first The length of the overlapping portion of each tower section, For assembly clearance parameters, For the first The length of the protruding portion of each tower section.

9. A system for calculating the sway of a high-lift structure, characterized in that, include: The finite element simulation module is used to establish a finite element simulation model containing nonlinear contact relationships based on the actual structural form of the high-lift structure, and to perform finite element simulation analysis on the finite element simulation model to obtain basic response data for characterizing the swaying characteristics of the structure. The theoretical calculation module is used to establish a theoretical calculation model to characterize the influence of the assembly gap on the structural sway based on the assembly gap characteristics between tower sections in a high-lift structure, and to calculate the additional sway introduced by the assembly gap according to the theoretical calculation model. The superposition module is used to superimpose the basic response data with the additional sway amount to obtain the calculation result of the sway amount of the high-lift structure considering the influence of assembly gap.

10. A device for calculating the sway of a high-lift structure, characterized in that, The system includes a processor, a memory, and a computer program stored in the memory, wherein the computer program, when executed by the processor, implements the method for calculating the sway of a high-lift structure as described in any one of claims 1 to 8.

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