Method and device for determining torsion center of thin-wall section, electronic equipment and storage medium

Abstract

The embodiment of the invention provides a thin-wall section torsion center determination method and device, electronic equipment and a storage medium, and relates to the field of torsion center determination, and the method comprises the steps: determining the section data of a to-be-calculated thin-wall section, the section data comprises the height of the thin-wall section to be calculated, the width of the thin-wall section to be calculated, the web plate wall thickness of the thin-wall section to be calculated, the upper and lower wall thicknesses of the thin-wall section to be calculated, the wing plate wall thickness of the thin-wall section to be calculated and the area of the thin-wall section to be calculated; obtaining a first parameter, a second parameter and a third parameter of a torsion center calculation algorithm based on the section data of the to-be-calculated thin-wall section, calculating a first ratio of the first parameter to the second parameter, and calculating a second ratio of the first ratio to the third parameter as a torsion center of the to-be-calculated thin-wall section, the torsion center of the thin-wall section is directly calculated based on a simple calculation mode, and the efficiency of determining the torsion center is improved.

Description

Technical Field

[0001] The present invention relates to the field of torsion center determination, and in particular to a method, device, electronic device and storage medium for determining the torsion center of a thin-walled section. Background Art

[0002] The conventional method for determining the torsion center of an existing rectangular thin-walled section is to first find the centroid of the section, then use the centroid as the auxiliary pole to find the auxiliary sector coordinates of the section, and then find the sector product of inertia based on the auxiliary sector coordinates. The ratio of the sector product of inertia to the moment of inertia is the distance from the centroid to the torsion center.

[0003] Existing calculation methods are very cumbersome and prone to errors. Summary of the invention

[0004] The object of the present invention is to provide a method, device, electronic device and storage medium for determining the torsion center of a thin-walled section, which can improve the efficiency of determining the torsion center.

[0005] In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] In a first aspect, an embodiment of the present application provides a method for determining a torsion center of a thin-walled section, the method comprising:

[0007] Determine the cross-sectional data of the thin-walled section to be calculated, wherein the cross-sectional data includes the height of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated;

[0008] Obtaining a first parameter and a second parameter of a torsion center calculation algorithm based on the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated;

[0009] Obtaining a third parameter of the torsion center calculation algorithm based on the area of ​​the thin-walled section to be calculated, the wing plate wall thickness of the thin-walled section to be calculated, the web plate wall thickness of the thin-walled section to be calculated, and the upper and lower wall thicknesses of the thin-walled section to be calculated;

[0010] calculating a first ratio of the first parameter to the second parameter;

[0011] A second ratio of the first ratio to the third parameter is calculated as the torsion center of the thin-walled section to be calculated.

[0012] In an optional embodiment, the method further comprises:

[0013] Calculating the fan-shaped coordinates of each node in the thin-walled section to be calculated, wherein each of the nodes constitutes the thin-walled section to be calculated;

[0014] Based on each of the nodes, determining the fan-shaped linear static moment of the thin-walled section to be calculated;

[0015] The torsion center calculation algorithm is determined based on the sector coordinates and the sector line static moment.

[0016] In an optional implementation, the step of calculating the fan coordinates of each node in the thin-walled section to be calculated includes:

[0017] Dividing the thin-walled section to be calculated into i sections based on each of the nodes;

[0018] Determine the distance from the i-th section to the zero point;

[0019] The distance from the i-th section to the zero point along the perimeter of the section;

[0020] Determine the first sector coordinates of the i-1 section;

[0021] The second sector coordinates of the i-th section are calculated based on the first sector coordinates, the distance from the i-th section to the zero point, the distance from the i-th section to the zero point along the circumference direction of the section, the area of ​​the thin-walled section to be calculated, the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, and the width of the thin-walled section to be calculated.

[0022] In an optional embodiment, the first parameter of the torsion center calculation algorithm satisfies the following formula:

[0023] First parameter = Ψt b +3B(2B 2 / A+3t y / t f -t y / t b );

[0024] Ψ=H / t f +H / t b +2B / t y ;

[0025] Where H is the height of the thin-walled section to be calculated, t f is the web wall thickness of the thin-walled section to be calculated, t b is the wall thickness of the thin-walled section to be calculated, t yis the upper and lower wall thickness of the thin-walled section to be calculated, B is the width of the thin-walled section to be calculated, and A is the area of ​​the thin-walled section to be calculated.

[0026] In an optional embodiment, the second parameter of the torsion center calculation algorithm satisfies the following formula:

[0027] Second parameter = H 2 (t b / t f +2+t f / t b )+12B 2 ) / A;

[0028] Where H is the height of the thin-walled section to be calculated, t f is the web wall thickness of the thin-walled section to be calculated, t b is the wall thickness of the thin-walled section to be calculated, t y are the upper and lower wall thicknesses of the thin-walled section to be calculated, and A is the area of ​​the thin-walled section to be calculated.

[0029] In an optional implementation, the third parameter satisfies the following formula:

[0030] The third parameter = 2(t b +t f )(1 / t y +3t y / t f t b );

[0031] Among them, t f is the web wall thickness of the thin-walled section to be calculated, t b is the wall thickness of the thin-walled section to be calculated, t y The upper and lower wall thicknesses of the thin-walled section to be calculated.

[0032] In an optional embodiment, the thin-walled section to be calculated is a rectangular thin-walled section.

[0033] In a second aspect, an embodiment of the present application provides a device for determining a torsion center of a thin-walled section, the device comprising:

[0034] A determination module, used to determine the cross-sectional data of the thin-walled cross-section to be calculated, wherein the cross-sectional data includes the height of the thin-walled cross-section to be calculated, the width of the thin-walled cross-section to be calculated, the web wall thickness of the thin-walled cross-section to be calculated, the upper and lower wall thicknesses of the thin-walled cross-section to be calculated, the wing wall thickness of the thin-walled cross-section to be calculated, and the area of ​​the thin-walled cross-section to be calculated;

[0035] A calculation module, for obtaining a first parameter and a second parameter of a torsion center calculation algorithm based on the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated; obtaining a third parameter of the torsion center calculation algorithm based on the area of ​​the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, and the upper and lower wall thicknesses of the thin-walled section to be calculated; calculating a first ratio of the first parameter to the second parameter; and calculating a second ratio of the first ratio to the third parameter as the torsion center of the thin-walled section to be calculated.

[0036] In a third aspect, an embodiment of the present application provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method for determining the torsion center of a thin-walled section when executing the computer program.

[0037] In a fourth aspect, an embodiment of the present application provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for determining the torsion center of a thin-walled section.

[0038] This application has the following beneficial effects:

[0039] The present application determines the cross-sectional data of the thin-walled cross-section to be calculated, wherein the cross-sectional data includes the height of the thin-walled cross-section to be calculated, the width of the thin-walled cross-section to be calculated, the web wall thickness of the thin-walled cross-section to be calculated, the upper and lower wall thicknesses of the thin-walled cross-section to be calculated, the wing wall thickness of the thin-walled cross-section to be calculated, and the area of ​​the thin-walled cross-section to be calculated. Based on the height of the thin-walled cross-section to be calculated, the web wall thickness of the thin-walled cross-section to be calculated, the wing wall thickness of the thin-walled cross-section to be calculated, the upper and lower wall thicknesses of the thin-walled cross-section to be calculated, the width of the thin-walled cross-section to be calculated, and the area of ​​the thin-walled cross-section to be calculated, the cross-sectional data of the thin-walled cross-section to be calculated are calculated. The first parameter and the second parameter of the torsion center calculation algorithm are obtained by multiplying the product, and the third parameter of the torsion center calculation algorithm is obtained based on the area of ​​the thin-walled section to be calculated, the wing plate wall thickness of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, and the upper and lower wall thicknesses of the thin-walled section to be calculated. The first ratio of the first parameter to the second parameter is calculated, and the second ratio of the first ratio to the third parameter is calculated as the torsion center of the thin-walled section to be calculated. The present application directly calculates the torsion center of the thin-walled section based on a simple calculation method, thereby improving the efficiency of determining the torsion center. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 A block diagram of an electronic device provided by an embodiment of the present invention;

[0042] Figure 2 One of the flow charts of a method for determining a torsion center of a thin-walled section provided in an embodiment of the present invention;

[0043] Figure 3 A schematic diagram of a thin-wall cross section to be calculated provided in an embodiment of the present invention;

[0044] Figure 4 A second flow chart of a method for determining a torsion center of a thin-walled section provided in an embodiment of the present invention;

[0045] Figure 5 A fan-shaped coordinate diagram of a thin-walled cross section to be calculated provided by an embodiment of the present invention;

[0046] Figure 6 A structural block diagram of a device for determining a torsion center of a thin-walled section provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0052] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] After extensive research, the inventors found that the conventional method for calculating the torsion center of a rectangular thin-walled section is to first find the centroid of the section, then use the centroid as the auxiliary pole to find the auxiliary sector coordinates of the section, and then find the sector inertia product based on the auxiliary sector coordinates. The ratio of the sector inertia product to the moment of inertia is the distance from the centroid to the torsion center. The existing calculation method is very cumbersome and prone to errors.

[0054] In view of the discovery of the above problems, the present embodiment provides a method, device, electronic device and storage medium for determining the torsion center of a thin-walled section, which can determine the cross-sectional data of the thin-walled section to be calculated, wherein the cross-sectional data includes the height of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated, based on the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated. The first parameter and the second parameter of the torsion center calculation algorithm are obtained based on the width of the thin-walled section to be calculated and the area of ​​the thin-walled section to be calculated. The third parameter of the torsion center calculation algorithm is obtained based on the area of ​​the thin-walled section to be calculated, the wing plate wall thickness of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated and the upper and lower wall thicknesses of the thin-walled section to be calculated. The first ratio of the first parameter to the second parameter is calculated, and the second ratio of the first ratio to the third parameter is calculated as the torsion center of the thin-walled section to be calculated. The present application directly calculates the torsion center of the thin-walled section based on a simple calculation method, thereby improving the efficiency of determining the torsion center. The scheme provided in this embodiment is elaborated in detail below.

[0055] This embodiment provides an electronic device that can determine the torsion center of a thin-walled section. In a possible implementation, the electronic device can be a user terminal, for example, the electronic device can be, but is not limited to, a server, a smart phone, a personal computer (PC), a tablet computer, a personal digital assistant (PDA), a mobile Internet device (MID), etc.

[0056] Please refer to Figure 1 , Figure 1 1 is a schematic diagram of the structure of the electronic device 100 provided in the embodiment of the present application. The electronic device 100 may also include Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown. Figure 1 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0057] The electronic device 100 includes a thin-wall section torsion center determination device 110 , a memory 120 and a processor 130 .

[0058] The components of the memory 120 and the processor 130 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The thin-walled section torsion center determination device 110 includes at least one software function module that can be stored in the memory 120 in the form of software or firmware or solidified in the operating system (OS) of the electronic device 100. The processor 130 is used to execute the executable modules stored in the memory 120, such as the software function modules and computer programs included in the thin-walled section torsion center determination device 110.

[0059] The memory 120 may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The memory 120 is used to store a program, and the processor 130 executes the program after receiving an execution instruction.

[0060] Please refer to Figure 2 , Figure 2 For application Figure 1 A flow chart of a method for determining a torsion center of a thin-walled section of an electronic device 100 is provided, and the method including each step is described in detail below.

[0061] S201: Determine the cross-sectional data of the thin-walled cross-section to be calculated.

[0062] Among them, the cross-sectional data include the height of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated.

[0063] S202: Obtaining a first parameter and a second parameter of a torsion center calculation algorithm based on a height of a thin-walled section to be calculated, a web wall thickness of the thin-walled section to be calculated, a wing wall thickness of the thin-walled section to be calculated, an upper and lower wall thickness of the thin-walled section to be calculated, a width of the thin-walled section to be calculated, and an area of ​​the thin-walled section to be calculated.

[0064] S203: obtaining a third parameter of the torsion center calculation algorithm based on the area of ​​the thin-walled section to be calculated, the wing plate wall thickness of the thin-walled section to be calculated, the web plate wall thickness of the thin-walled section to be calculated, and the upper and lower wall thicknesses of the thin-walled section to be calculated.

[0065] S204: Calculate a first ratio of the first parameter to the second parameter.

[0066] S205: Calculate a second ratio of the first ratio to the third parameter as the torsion center of the thin-walled section to be calculated.

[0067] like Figure 3 As shown, it is a schematic diagram of the thin-walled section to be calculated. In the figure, the cross-sectional data includes the height of the thin-walled section to be calculated as H, the width of the thin-walled section to be calculated as B, and the web wall thickness of the thin-walled section to be calculated as t f , the upper and lower wall thicknesses of the thin-walled section to be calculated are t y The wall thickness of the thin-walled section to be calculated is t b , the area of ​​the thin-walled section to be calculated is A, wherein A is the section data including the product of the height of the thin-walled section to be calculated and the width of the thin-walled section to be calculated, that is, A=HB.

[0068] Based on the height of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated, the torsion center of the thin-walled section to be calculated can be directly obtained based on the torsion center algorithm.

[0069] The torsional center of thin-walled sections has important applications in engineering design and analysis. The torsional center of thin walls can avoid warping deformation. When designing structural members such as beams and columns, if the external moment is not applied at the torsional center, the section will warp. This warping deformation will cause additional stress concentration and reduce the load-bearing capacity and stability of the structure. Ensuring that the external moment acts at the torsional center can avoid warping deformation and make the section only undergo pure torsion. For example, when designing the box girder of a bridge, ensure that the location of the piers or supports is such that the external moment acts at the torsional center of the box girder.

[0070] The torsion center of a thin wall can improve the structural stiffness. When designing a steel structure or a composite material structure, a reasonable selection of the torsion center can improve the torsion stiffness of the structure. By optimizing the cross-sectional shape and size, the torsion center is located in the position that is most conducive to resisting external torque. For example, when designing an aircraft wing, the torsion center can be located in the best position by adjusting the layout of the ribs and skin, thereby improving the torsion stiffness of the wing.

[0071] The calculation of the thin-wall torsion center can be applied to the calculation of torsional stiffness. When calculating the torsional stiffness of a structure, the position of the torsion center needs to be considered. Torsional stiffness is closely related to the geometry of the cross section and the position of the torsion center. Using the method for determining the torsion center of a thin-walled cross section provided in this application, the torsion center can be quickly calculated, and the torsional stiffness can be calculated on this basis. For example, when analyzing the torsional stiffness of a car frame, it is necessary to determine the torsion center of each section, and then perform an overall torsional stiffness analysis.

[0072] The calculation of the torsion center of thin walls can be applied in the stress analysis process of the structure. When performing stress analysis of the structure, correctly determining the torsion center can avoid additional stress caused by warping deformation. In stress analysis, setting the external moment action point on the torsion center can simplify the calculation of stress distribution. For example, when analyzing the stress of a ship structure, ensuring that the external moment acts on the torsion center can avoid complex stress distribution caused by warping deformation.

[0073] The calculation of the torsion center of thin-walled parts can be applied in specific engineering practices. For example, when designing bearings or connectors, ensuring that the external moment action point is located at the torsion center can reduce unnecessary stress concentration. When designing bridge bearings, by adjusting the position and shape of the bearings, the external moment acts on the torsion center, thereby reducing the stress concentration of the bearings and increasing the service life of the bearings.

[0074] The calculation of the thin-wall torsion center can be applied in the assembly positioning process. During the assembly process, ensuring that the external torque action point of each component is located on the torsion center can ensure the overall stability and reliability of the structure. When assembling large steel structures, accurate measurement and adjustment can be used to ensure that the external torque action point of each component is located on the torsion center, thereby ensuring the stability and reliability of the entire structure.

[0075] The calculation of the torsion center of thin walls can be applied in the numerical simulation process. When performing finite element analysis, correctly determining the torsion center can improve the accuracy and reliability of the analysis. When establishing a finite element model, the external torque action point is ensured to be located at the torsion center through meshing and boundary condition setting. For example, when analyzing the torsion performance of a wind turbine blade, determining the torsion center of each section of the blade through finite element analysis can improve the accuracy and reliability of the analysis.

[0076] The torsion center of a thin-walled section has important applications in engineering design and analysis. Therefore, the method for determining the torsion center of a thin-walled section provided in this application can quickly determine the torsion center of a thin-walled section, so that the correct use of the torsion center can avoid warping deformation, improve the rigidity and stability of the structure, simplify stress analysis, ensure the reasonable design of supports and connectors, and improve the accuracy of numerical simulation.

[0077] Specifically, the first parameter and the second parameter of the torsion center calculation algorithm are obtained based on the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated. The first parameter satisfies the following formula:

[0078] First parameter = Ψt b +3B(2B 2 / A+3t y / t f -t y / t b );

[0079] Ψ=H / t f +H / t b +2B / t y ;

[0080] The second parameter satisfies the following formula:

[0081] Second parameter = H 2 (t b / t f +2+t f / t b )+12B 2 ) / A;

[0082] Where H is the height of the thin-walled section to be calculated, t f is the web wall thickness of the thin-walled section to be calculated, t b is the wall thickness of the thin-walled section to be calculated, t y is the upper and lower wall thickness of the thin-walled section to be calculated, B is the width of the thin-walled section to be calculated, and A is the area of ​​the thin-walled section to be calculated.

[0083] The third parameter of the torsion center calculation algorithm is obtained based on the area of ​​the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, and the upper and lower wall thicknesses of the thin-walled section to be calculated:

[0084] The third parameter satisfies the following formula:

[0085] The third parameter = 2(t b +t f )(1 / t y +3t y / t f t b );

[0086] Among them, t f is the web wall thickness of the thin-walled section to be calculated, t b is the wall thickness of the thin-walled section to be calculated, ty The upper and lower wall thicknesses of the thin-walled section to be calculated.

[0087] Finally, the torsion center of the thin-walled section is calculated by the following formula:

[0088] Cn=(Ψtb+3B(2B2 / A+3ty / tf-ty / tb)) / ((H2(tb / tf+2+tf / tb)+12B2) / A+2(tb+tf)(1 / ty+3ty / tftb)), wherein Ψtb+3B(2B2 / A+3ty / tf-ty / tb) is the first parameter, H2(tb / tf+2+tf / tb)+12B2) / A is the second parameter, and 2(tb+tf)(1 / ty+3ty / tftb) is the third parameter.

[0089] The calculation method of the torsion center of the above-mentioned thin-walled section only needs to determine the cross-sectional data of the thin-walled section to determine the corresponding torsion center. The calculation method is simple and does not require the cumbersome calculation method in the prior art to calculate the torsion center, which can improve the calculation efficiency of the torsion center.

[0090] The torsion center calculation algorithm is based on derivation, the specific derivation method is as follows: Figure 4 As shown, the following steps are included:

[0091] S301: Calculate the fan coordinates of each node in the thin-walled section to be calculated.

[0092] Among them, each node constitutes the thin-walled section to be calculated.

[0093] S302: Based on each node, determine the fan-shaped linear static moment of the thin-walled section to be calculated.

[0094] S303: Determine a torsion center calculation algorithm based on the sector coordinates and the sector linear static moment.

[0095] The method of calculating the fan coordinates of each node in the thin-walled section to be calculated can be: dividing the thin-walled section to be calculated into i sections based on each node; determining the distance from the i-th section to the zero point; the distance from the i-th section to the zero point along the circumference of the section; determining the first fan coordinates of the i-1-th section; based on the first fan coordinates, the distance from the i-th section to the zero point, the distance from the i-th section to the zero point along the circumference of the section, the area of ​​the thin-walled section to be calculated, the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, and the width of the thin-walled section to be calculated, calculate the second fan coordinates of the i-th section.

[0096] like Figure 5 As shown, it is the fan-shaped coordinate diagram of the thin-walled section to be calculated. The formula is derived as follows:

[0097] like Figure 5 As shown, let point O be the torsion center of the rectangular cross section. Since the cross section is symmetrical up and down, the x-axis where point O is located is the upper and lower symmetry axis of the cross section.

[0098] The sector coordinates of the thin-walled section to be calculated are calculated using the following formula:

[0099] ω i =ω i-1 +(ρ i -Ω / Ψ / t i )s i

[0100] Where Ω=2A, i represents Figure 5 The mid-nodes are 1, A, 2, m, 4, etc. Each node constitutes the thin-walled section to be calculated.

[0101] ρ——the distance from the i-th section to point O, mm; s——the distance from the section to point O along the perimeter of the section, mm; t i ——Wall thickness of section i.

[0102] Assuming node 1 is the zero point, then ω1=0, where ω is the fan coordinate corresponding to the node.

[0103] For node A, s 1-A =H / 2

[0104] ω A =ω1+(ρ 1-A -Ω / Ψ / t 1-A );s 1-A =(H / 2)*((BC n )-Ω / Ψ / t b ) ①

[0105] For nodes m, s A-m =B;

[0106] ω m =ω A +(ρ A-m -Ω / Ψ / t A-m )s A-m =(H / 2)*((BC n )-Ω / Ψ / t b )+(Hz / 2-Ω / Ψ / t y )

[0107] B=(Hz / 2)*(Ω / Ψ / t f -C n ) ②

[0108] According to the characteristics of the torsion center, the fan-shaped linear static moment of the thin-walled section to be calculated is:

[0109] I ωy =∫ A (ωxdA)=0,I ωx =∫ A (ωydA)=0,where I ωy is the fan-shaped linear static moment of the cross section about the y-axis, I ωy is the fan-shaped linear static moment of the cross section about the x-axis.

[0110] Since the cross section is symmetrical from top to bottom, I ωy =0 must be true.

[0111] The fan-shaped linear static moment of the thin-walled section to be calculated about the x-axis is calculated using the following formula:

[0112] I ωx =∫ A ωydA=∫0 s t i y i (ω i-1 +(ρ i -Ω / Ψ / t i )s i )ds;

[0113] y is the y-axis coordinate value of the thin-walled section to be calculated.

[0114] For segments 1 to A, y 1-A =-s 1-A ;

[0115] I ωx 1-A =∫0 s t 1-A y 1-A (ω1+(ρ 1-A -Ω / Ψ / t 1-A )s 1-A )ds

[0116] =∫0 H / 2 -t b ((BC n )-Ω / Ψ / t b )s 1-A 2 ds

[0117] =-t b ((BC n )-Ω / Ψ / t b )(H / 2) 3 / 3=-H 2 ω A t b / 12

[0118] For segments A to m, yA-m = -H / 2;

[0119] I ωx A-m = ∫₀ s t A-m y A-m (ω A +(H / 2 - Ω / Ψ / t y )s A-m )ds

[0120] = ∫₀ B -t y H(ω A +(H / 2 - Ω / Ψ / t y )s A-m ) / 2ds

[0121] = -t y H(ω A s A-m +(H / 2 - Ω / Ψ / t y )s A-m 2 / 2)₀ B / 2

[0122] = -t y H(ω A B+(H / 2 - Ω / Ψ / t y )B 2 / 2) / 2

[0123] = -HB(ω m +ω A )t y / 4

[0124] For segments m to 4, y m-4 = s m-4 -H / 2;

[0125] I ωx m-4 = ∫ₜ m-4 y m-4 (ω m +(ρ m-4 -Ω / Ψ / t m-4 )s m-4 )ds

[0126] = ∫₀ H / 2 t f (s m-4 -H / 2)(ω m +(C n -Ω / Ψ / t f )s m-4 )ds

[0127] = tf (-Hω m s A-m / 2+(ω m -H(C n -Ω / Ψ / t f ) / 2)s m-4 2 / 2+(C n -Ω / Ψ / t f )s m-4 3 / 3)0 H / 2

[0128] =t f (-H 2 ω m / 4+(ω m -H(C n -Ω / Ψ / t f ) / 2)H 2 / 8+(C n -Ω / Ψ / t f )H 3 / twenty four)

[0129] =-Hz 2 ω m t f / 12

[0130] ∴I ωx =2(I ωx 1-A +I ωx A-m +I ωx m-4 )=-H 2 ω A t b / 6-HB(ω m +ω A )t y / 2-Hz 2 ω m t f / 6=0③;

[0131] Substituting equations ① and ② into the above equation, we can simplify the torsion center calculation algorithm to obtain:

[0132] C n =(Ψt b +3B(2B 2 / A+3t y / t f -t y / t b )) / ((H 2 (t b / t f +2+tf / t b )+12B 2 ) / A+2

[0133] (t b +t f )(1 / t y +3t y / t f t b ));

[0134] Where Ψ=H / t f +H / t b +2B / t y , A=HB.

[0135] Please refer to Figure 6 The present application embodiment also provides an application Figure 1 The thin-walled cross-section torsion center determining device 110 of the electronic device 100 includes:

[0136] A determination module 111 is used to determine the cross-sectional data of the thin-walled cross-section to be calculated, wherein the cross-sectional data includes the height of the thin-walled cross-section to be calculated, the width of the thin-walled cross-section to be calculated, the web wall thickness of the thin-walled cross-section to be calculated, the upper and lower wall thicknesses of the thin-walled cross-section to be calculated, the wing wall thickness of the thin-walled cross-section to be calculated, and the area of ​​the thin-walled cross-section to be calculated;

[0137] A calculation module 112 is used to obtain a first parameter and a second parameter of a torsion center calculation algorithm based on the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated; to obtain a third parameter of the torsion center calculation algorithm based on the area of ​​the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, and the upper and lower wall thicknesses of the thin-walled section to be calculated; to calculate a first ratio of the first parameter to the second parameter; and to calculate a second ratio of the first ratio to the third parameter as the torsion center of the thin-walled section to be calculated.

[0138] The present application also provides an electronic device 100, which includes a processor 130 and a memory 120. The memory 120 stores computer executable instructions, and when the computer executable instructions are executed by the processor 130, the method for determining the torsion center of a thin-walled section is implemented.

[0139] The embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by the processor 130, the method for determining the torsion center of a thin-walled section is implemented.

[0140] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of boxes in the block diagram and / or the flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0141] In addition, each functional module in each embodiment of the present application can be integrated together to form an independent part, or each module can exist separately, or two or more modules can be integrated to form an independent part. If the function is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk.

[0142] 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 sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0143] The above are only various implementations of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for determining the torsion center of a thin-walled section, characterized in that: The method comprises: Determine the cross-sectional data of the thin-walled section to be calculated, wherein the cross-sectional data includes the height of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated; Obtaining a first parameter and a second parameter of a torsion center calculation algorithm based on the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated; Obtaining a third parameter of the torsion center calculation algorithm based on the area of ​​the thin-walled section to be calculated, the wing plate wall thickness of the thin-walled section to be calculated, the web plate wall thickness of the thin-walled section to be calculated, and the upper and lower wall thicknesses of the thin-walled section to be calculated; calculating a first ratio of the first parameter to the second parameter; A second ratio of the first ratio to the third parameter is calculated as the torsion center of the thin-walled section to be calculated.

2. The method according to claim 1, characterized in that The method further comprises: Calculating the fan-shaped coordinates of each node in the thin-walled section to be calculated, wherein each of the nodes constitutes the thin-walled section to be calculated; Based on each of the nodes, determining the fan-shaped linear static moment of the thin-walled section to be calculated; The torsion center calculation algorithm is determined based on the sector coordinates and the sector line static moment.

3. The method according to claim 2, characterized in that The step of calculating the fan-shaped coordinates of each node in the thin-walled section to be calculated comprises: Dividing the thin-walled section to be calculated into i sections based on each of the nodes; Determine the distance from the i-th section to the zero point; The distance from the i-th section to the zero point along the perimeter of the section; Determine the first sector coordinates of the i-1th section; The second sector coordinates of the i-th section are calculated based on the first sector coordinates, the distance from the i-th section to the zero point, the distance from the i-th section to the zero point along the circumference direction of the section, the area of ​​the thin-walled section to be calculated, the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, and the width of the thin-walled section to be calculated.

4. The method according to claim 1, characterized in that: The first parameter of the torsion center calculation algorithm satisfies the following formula: First parameter = Ψt b +3B(2B 2 / A+3t y / t f -t y / t b ); Ψ=H / t f +H / t b +2B / t y ; Where H is the height of the thin-walled section to be calculated, t f is the web wall thickness of the thin-walled section to be calculated, t b is the wall thickness of the thin-walled section to be calculated, t y is the upper and lower wall thickness of the thin-walled section to be calculated, B is the width of the thin-walled section to be calculated, and A is the area of ​​the thin-walled section to be calculated.

5. The method according to claim 1, characterized in that The second parameter of the torsion center calculation algorithm satisfies the following formula: Second parameter = H 2 (t b / t f +2+t f / t b )+12B 2 ) / A; Where H is the height of the thin-walled section to be calculated, t f is the web wall thickness of the thin-walled section to be calculated, t b is the wall thickness of the thin-walled section to be calculated, t y are the upper and lower wall thicknesses of the thin-walled section to be calculated, and A is the area of ​​the thin-walled section to be calculated.

6. The method according to claim 1, characterized in that The third parameter satisfies the following formula: The third parameter = 2(t b +t f )(1 / t y +3t y / t f t b ); Among them, t f is the web wall thickness of the thin-walled section to be calculated, t b is the wall thickness of the thin-walled section to be calculated, t y The upper and lower wall thicknesses of the thin-walled section to be calculated.

7. The method according to claim 1, characterized in that The thin-walled section to be calculated is a rectangular thin-walled section.

8. A device for determining the torsion center of a thin-walled section, characterized in that: The device comprises: A determination module, used to determine the cross-sectional data of the thin-walled cross-section to be calculated, wherein the cross-sectional data includes the height of the thin-walled cross-section to be calculated, the width of the thin-walled cross-section to be calculated, the web wall thickness of the thin-walled cross-section to be calculated, the upper and lower wall thicknesses of the thin-walled cross-section to be calculated, the wing wall thickness of the thin-walled cross-section to be calculated, and the area of ​​the thin-walled cross-section to be calculated; A calculation module, for obtaining a first parameter and a second parameter of a torsion center calculation algorithm based on the height of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the upper and lower wall thicknesses of the thin-walled section to be calculated, the width of the thin-walled section to be calculated, and the area of ​​the thin-walled section to be calculated; obtaining a third parameter of the torsion center calculation algorithm based on the area of ​​the thin-walled section to be calculated, the wing wall thickness of the thin-walled section to be calculated, the web wall thickness of the thin-walled section to be calculated, and the upper and lower wall thicknesses of the thin-walled section to be calculated; calculating a first ratio of the first parameter to the second parameter; and calculating a second ratio of the first ratio to the third parameter as the torsion center of the thin-walled section to be calculated.

9. An electronic device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the steps of the method according to any one of claims 1 to 7 when executing the computer program.

10. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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