Composite stiffened wallboard trepanning weight reduction method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention provides a composite stiffened wallboard trepanning weight reduction method and device, electronic equipment and a storage medium, and the method comprises the steps: determining the target buckling load of any two target stringer dividing wallboards in a built stiffened wallboard finite element model of a large thin-wall structure, the maximum deformation position of the stiffened wall plate in the stiffened wall plate finite element model is determined, the stiffened wall plate comprises a target stringer dividing wall plate, holes with different preset diameters are formed in the maximum deformation position and the center position of the stiffened wall plate respectively, a plurality of first wall plates are obtained, first buckling loads of the first wall plates are determined, and the first buckling loads of the second wall plates are determined; and all second buckling loads larger than or equal to the target buckling load are obtained from all the first buckling loads, the first wall plate corresponding to the maximum buckling load is obtained from all the second buckling loads, and trepanning is conducted based on the trepanning mode of the first wall plate. And the use of materials can be reduced, so that the weight of a large thin-wall structure is reduced.

Description

Technical Field

[0001] The present invention relates to the field of data processing, and in particular to a method, device, electronic equipment and storage medium for reducing weight by opening holes in a composite reinforced wall panel. Background Art

[0002] Large, thin-walled structures can be used for transporting cargo or people in aerospace, rail transit, and other fields. Currently, weight reduction for large, thin-walled structures is achieved during the design process. This can be achieved by increasing material allowable values ​​and improving material utilization. However, these methods are somewhat conservative, necessitating the development of reasonable test methods to determine design values ​​and achieve weight reduction without conservatism. Summary of the Invention

[0003] The object of the present invention is to provide a method, device, electronic equipment and storage medium for reducing weight by opening holes in composite reinforced wall panels, which can reduce the use of materials and thus achieve weight reduction.

[0004] In order to achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0005] In a first aspect, an embodiment of the present application provides a method for reducing weight by opening a hole in a composite stiffened wall panel, the method comprising:

[0006] Determine the target buckling load of any two target long stringer spans in the constructed finite element model of stiffened panels for large thin-walled structures;

[0007] Determining a maximum deformation position of a stiffened panel in a finite element model of the stiffened panel, wherein the stiffened panel includes a target long stringer spandrel panel;

[0008] Opening holes of different preset diameters at the maximum deformation position and the center position of the reinforced wall panel respectively to obtain a plurality of first wall panels;

[0009] determining a first buckling load of each of the first wall panels;

[0010] Obtaining second buckling loads greater than or equal to the target buckling load from the first buckling loads;

[0011] The first wall panel corresponding to the maximum buckling load is obtained from each second buckling load, and a hole is drilled based on the hole drilling method of the first wall panel.

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

[0013] determining a first diameter corresponding to the first hole at the maximum deformation position of the first wall panel corresponding to the maximum buckling load among the second buckling loads;

[0014] comparing the first diameter with a first predetermined diameter;

[0015] When the first diameter is greater than a first preset diameter, comparing the first diameter with a second preset diameter, wherein the first preset diameter is smaller than the second preset diameter;

[0016] When the first diameter is greater than the second preset diameter, the first hole is reinforced.

[0017] In an optional embodiment, the method further comprises:

[0018] determining a second diameter corresponding to a second hole at a center position of the first wall panel corresponding to a maximum buckling load among the second buckling loads;

[0019] comparing the second diameter with a first predetermined diameter;

[0020] When the second diameter is greater than the first preset diameter, comparing the second diameter with the second preset diameter, wherein the first preset diameter is smaller than the second preset diameter;

[0021] When the second diameter is greater than the second preset diameter, the second hole is reinforced.

[0022] In an optional embodiment, the step of determining the target buckling loads of any two target long stringer panels in the constructed finite element model of the stiffened panel of the large thin-walled structure includes:

[0023] Determine the third buckling load of any two target long stringer span panels in the constructed finite element model of stiffened panels of large thin-walled structures;

[0024] determining the fourth buckling load of any two target long truss spans under the four-side simply supported condition;

[0025] determining the fifth buckling load of any two target long truss spans under the four-side clamped condition;

[0026] calculating an average of the fourth buckling load and the fifth buckling load;

[0027] calculating an absolute value of a difference between the third buckling load and the average value;

[0028] calculating a ratio of the absolute value to the third buckling load;

[0029] comparing the ratio with a preset value;

[0030] When the ratio is less than or equal to the preset value, the third buckling load is used as the target buckling load of any two target long truss spans in the constructed stiffened wall panel finite element model of the large thin-walled structure.

[0031] In an optional embodiment, the step of determining the third buckling load of any two target long stringer spandrel panels in the constructed finite element model of the stiffened spandrel panel of the large thin-walled structure includes:

[0032] Determining the mechanical performance parameters of the constructed large thin-walled structure reinforced wall panel finite element model;

[0033] Determine the average strain of any two target long stringer panels in the constructed finite element model of stiffened panels of large thin-walled structures;

[0034] Determine the thickness of any target long stringer partition plate between any two target long stringer partition plates;

[0035] Based on the mechanical performance parameters, average strain and thickness, the third buckling load of any two target long truss wall panels in the constructed stiffened wall panel finite element model of the large thin-walled structure is calculated.

[0036] In an optional embodiment, the third buckling load satisfies the following formula:

[0037] N x =E*ε*t;

[0038] Among them, N x is the third buckling load, E is the mechanical property parameter, ε is the average strain on the wall panels between the two target long trusses, and t is the thickness.

[0039] In an optional embodiment, the fourth buckling load satisfies the following formula:

[0040]

[0041] The fifth buckling load satisfies the following formula:

[0042]

[0043] Among them, D 11 is the bending stiffness coefficient of any two target long truss partitions 11, D 12 is the bending stiffness coefficient of any two target long truss partitions 12, D 22 is the bending stiffness coefficient of any two target long truss partition panels 22, D 66 is the bending stiffness coefficient in the direction of any two of the target long-truss partitions 66, and b is the outer spacing of the long-truss of any of the target long-truss partitions.

[0044] In a second aspect, an embodiment of the present application provides a composite stiffened wall panel opening weight reduction device, the device comprising:

[0045] a determination module for determining target buckling loads of any two target long stringer spandrel panels in a constructed finite element model of a stiffened wall panel of a large thin-walled structure; and determining a maximum deformation position of the stiffened wall panel in the finite element model of the stiffened wall panel, wherein the stiffened wall panel includes the target long stringer spandrel panel;

[0046] a hole-making module, configured to respectively make holes of different preset diameters at the maximum deformation position and the center position of the reinforced wall panel to obtain a plurality of first wall panels;

[0047] The determining module is further configured to determine a first buckling load of each of the first wall panels;

[0048] An acquisition module is used to obtain each second buckling load greater than or equal to the target buckling load from each first buckling load; obtain the first wall panel corresponding to the maximum buckling load from each second buckling load, and perform hole opening based on the hole opening method of the first wall panel.

[0049] 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 when the processor executes the computer program, the steps of the method for reducing weight by opening holes in composite stiffened wall panels are implemented.

[0050] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the composite stiffened wall panel opening weight reduction method.

[0051] This application has the following beneficial effects:

[0052] This application determines the target buckling loads of any two target long-stringer interspacers in a constructed finite element model of a large thin-walled structure, and then determines the maximum deformation position of the stiffened panels in the finite element model. The stiffened panels include target long-stringer interspacers. Holes of different preset diameters are respectively opened at the maximum deformation position and the center of the stiffened panels to obtain multiple first panels. A first buckling load is determined for each first panel. Second buckling loads greater than or equal to the target buckling load are obtained from each first buckling load. From each second buckling load, the first panel corresponding to the maximum buckling load is obtained. Holes are then drilled based on the drilling method of the first panel. This can reduce material usage and, in turn, reduce the weight of the large thin-walled structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0054] Figure 1 A block diagram of an electronic device provided by an embodiment of the present invention;

[0055] Figure 2 One of the flow diagrams of a method for reducing weight by opening holes in a composite reinforced wall panel provided by an embodiment of the present invention;

[0056] Figure 3 A schematic diagram of strain load curves of a non-porous reinforced wall panel under compression conditions is provided for an embodiment of the present invention;

[0057] Figure 4 A schematic diagram of a strain load variation curve of a non-perforated reinforced wall panel under shear conditions provided by an embodiment of the present invention;

[0058] Figure 5 Schematic diagram of strain load curves of reinforced wall panels with different opening diameters under compression conditions provided by an embodiment of the present invention;

[0059] Figure 6 Schematic diagram of strain load curves of reinforced wall panels with different opening diameters under shear conditions provided by an embodiment of the present invention;

[0060] Figure 7 A second flow chart of a method for reducing weight by opening a hole in a composite reinforced wall panel provided by an embodiment of the present invention;

[0061] Figure 8 The third flow chart of a method for reducing weight by opening a hole in a composite reinforced wall panel provided by an embodiment of the present invention;

[0062] Figure 9 A schematic diagram of the spacing between long girders provided in an embodiment of the present invention;

[0063] Figure 10 This is a structural block diagram of the composite reinforced wall panel opening weight reduction device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only 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 herein can be arranged and designed in various different configurations.

[0065] 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 as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0066] 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, it does not need to be further defined or explained in subsequent drawings.

[0067] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0068] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0069] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0070] After extensive research, it was found that

[0071] Currently, weight reduction for large, thin-walled structures is achieved during the design process. This can be achieved by increasing material allowable values ​​and improving material utilization. However, these methods are somewhat conservative, necessitating the development of reasonable test methods to determine design values, thereby achieving deconservatism and weight reduction.

[0072] In light of the aforementioned issues, this embodiment provides a method, apparatus, electronic device, and storage medium for reducing weight by opening holes in composite stiffened panels. These methods are capable of determining the target buckling loads of any two target long-stringer interspacers in a constructed finite element model of stiffened panels for large thin-walled structures, as well as the maximum deformation position of the stiffened panels in the finite element model. The stiffened panels include target long-stringer interspacers. Holes of different preset diameters are opened at the maximum deformation position and at the center of the stiffened panels to obtain multiple first panels. A first buckling load is determined for each first panel. Second buckling loads greater than or equal to the target buckling load are obtained from each first buckling load. From each second buckling load, the first panel corresponding to the maximum buckling load is obtained. The holes are then opened based on the hole-opening method of the first panel. This method can reduce material usage and, in turn, reduce the weight of large thin-walled structures. The solution provided by this embodiment is described in detail below.

[0073] This embodiment provides an electronic device. In one possible implementation, the electronic device may be a user terminal, such as, but not limited to, a server, a smartphone, a personal computer (PC), a tablet computer, a personal digital assistant (PDA), a mobile internet device (MID), and an image acquisition device.

[0074] Please refer to Figure 1 , Figure 1 The electronic device 100 provided in the embodiment of the present application is shown in FIG. Figure 1 More or fewer components than shown, or with Figure 1 Different configurations shown. Figure 1 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0075] The electronic device 100 includes a composite stiffened wall panel opening weight reduction device 110 , a memory 120 and a processor 130 .

[0076] 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 composite stiffened wall panel opening weight reduction 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 composite stiffened wall panel opening weight reduction device 110.

[0077] 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 programmable 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.

[0078] Please refer to Figure 2 , Figure 2 For application Figure 1 A flow chart of a method for reducing weight by opening a hole in a composite reinforced wall panel of an electronic device 100 is provided. The method including each step is described in detail below.

[0079] S201: Determine the target buckling loads of any two target long stringer span panels in the constructed stiffened panel finite element model of a large thin-walled structure.

[0080] S202: Determine the maximum deformation position of the stiffened wall panel in the stiffened wall panel finite element model.

[0081] The reinforced wall panels include target long stringer wall panels.

[0082] S203: Opening holes of different preset diameters at the maximum deformation position and the center position of the reinforced wall panel to obtain a plurality of first wall panels.

[0083] S204: Determine the first buckling load of each first wall panel.

[0084] S205: Obtaining second buckling loads greater than or equal to the target buckling load from the first buckling loads.

[0085] S206: Obtaining a first wall panel corresponding to a maximum buckling load from each second buckling load, and performing drilling based on the drilling method of the first wall panel.

[0086] It should be noted that large thin-walled structures can be used for transporting goods or people in aerospace, rail transportation, and other fields. Among them, large thin-walled structures can be airplanes, cars, trains, ships, high-speed trains, subways, drones, etc. This embodiment of the application does not impose specific limitations on this.

[0087] A finite element model of the stiffened panels of a large thin-walled structure was established in CAE (Computer Aided Engineering) software. Nonlinear analysis was performed under compression load conditions to extract the buckling loads of any two target long truss panels in the stiffened panels in the constructed finite element model of the stiffened panels of a large thin-walled structure.

[0088] Based on the finite element model of the stiffened wall panel of the large thin-walled structure constructed in the CAE software, the maximum deformation position of the stiffened wall panel in the constructed finite element model of the stiffened wall panel of the large thin-walled structure is determined, that is, the position where the stiffened wall panel first buckles.

[0089] Holes of different preset diameters may be provided at the maximum deformation position and the center of the stiffened wall panel. It should be noted that the different preset diameters may include 12 mm, 24 mm, and 50 mm.

[0090] For example, a hole of 12 mm, a hole of 24 mm, and a hole of 50 mm can be opened at the maximum deformation position, and a hole of 12 mm, a hole of 24 mm, and a hole of 50 mm can be opened at the center position of the reinforced wall panel.

[0091] The first buckling load of each first panel in the above six cases is calculated respectively, and from each first buckling load, a second buckling load greater than or equal to the target buckling load of any two target long-stringer panels in the constructed finite element model of the stiffened panel of the large thin-walled structure is obtained. From each second buckling load, the first panel corresponding to the maximum buckling load is obtained as the optimal perforated panel.

[0092] There are several ways to calculate the first buckling load of each first panel. In one implementation:

[0093] Finite element modeling of the reinforced panels after the holes were opened was performed using CAE software. Nonlinear calculations were performed on the finite element model of the reinforced panels after the holes were opened, under the same compression and shear load conditions as the finite element model of the reinforced panels of the large thin-walled structure constructed without the holes. The strain and time data from the finite element results were extracted to form load-strain curves. The load-strain curves were then used to determine the various secondary buckling loads. The secondary load was calculated over time using the following formula: F = t * F0, where F is the secondary buckling load, t is the time of finite element extraction, and F0 is the fixed load set in the compression and shear load conditions.

[0094] like Figure 3 As shown in Figure 2, the strain load curve of the stiffened panel without holes under compression conditions is shown. The buckling load is the load corresponding to the simultaneous mutation of the two curves. Figure 4 is the strain load variation curve of the non-perforated reinforced wall panel under shear conditions. Figure 5 The strain load curves of reinforced panels with different opening diameters under compression conditions are shown in Figure 2. Figure 6 Strain load curves of reinforced panels with different opening diameters under shear conditions.

[0095] Finally, based on the maximum deformation position of the first wall panel corresponding to the maximum buckling load and the opening method of the middle position of the stiffened wall panel, the stiffened wall panel of the finite element model of the stiffened wall panel of the large thin-walled structure is opened, thereby reducing the use of materials and reducing the weight of the large thin-walled structure while ensuring the stability of the large thin-walled structure.

[0096] In order to further increase the stability of large thin-walled structures based on the opening of reinforced wall panels, refer to Figure 7 , including the following steps:

[0097] S301: Determine a first diameter corresponding to a first hole at a maximum deformation position of a first wall panel corresponding to a maximum buckling load among the second buckling loads.

[0098] S302: Compare the first diameter with a first preset diameter.

[0099] S303: When the first diameter is greater than the first preset diameter, compare the first diameter with the second preset diameter.

[0100] Wherein, the first preset diameter is smaller than the second preset diameter.

[0101] S304: When the first diameter is greater than the second preset diameter, the first hole is reinforced.

[0102] It should be noted that the first preset diameter can be set to 12 mm, 13 mm, or 14 mm, and the second preset diameter can be set to 24 mm, 25 mm, or 26 mm, etc., and this embodiment of the application does not impose any specific limitation on this.

[0103] In addition to determining whether the first hole at the maximum deformation position needs to be reinforced to increase stability, it is also necessary to determine whether the second hole at the center of the stiffened wall panel needs to be reinforced. The specific method can be:

[0104] Determine a second diameter corresponding to a second hole at a center position of the first wall panel corresponding to a maximum buckling load among each second buckling load, compare the second diameter with a first preset diameter, and when the second diameter is greater than the first preset diameter, compare the second diameter with a second preset diameter, wherein the first preset diameter is smaller than the second preset diameter, and when the second diameter is greater than the second preset diameter, strengthen the second hole.

[0105] There are many ways to determine the target buckling load of any two target long truss spans in the constructed finite element model of the stiffened wall panels of the large thin-walled structure. In one implementation, for example, Figure 8 As shown, the following steps are included:

[0106] S201-1: Determine the third buckling load of any two target long stringer panels in a constructed finite element model of stiffened panels for a large thin-walled structure.

[0107] S201-2: Determine the fourth buckling load of any two target long stringer spans under four-side simply supported conditions.

[0108] S201-3: Determine the fifth buckling load of any two target long truss spans under four-side clamped conditions.

[0109] S201-4: Calculate the average of the fourth buckling load and the fifth buckling load.

[0110] S201-5: Calculate the absolute value of the difference between the third buckling load and the average value.

[0111] S201-6: Calculate the ratio of the absolute value to the third buckling load.

[0112] S201-7: Compare the ratio with a preset value.

[0113] S201-8: When the ratio is less than or equal to a preset value, the third buckling load is used as the target buckling load of any two target long truss span panels in the constructed stiffened panel finite element model of the large thin-walled structure.

[0114] The third buckling load of any two target long stringer spans in the constructed finite element model of the stiffened wall panels of the large thin-walled structure can be calculated and determined by the following methods:

[0115] Determine the mechanical performance parameters of the constructed large thin-walled structure's stiffened wall panel finite element model, determine the average strain of any two target long truss wall panels in the constructed large thin-walled structure's stiffened wall panel finite element model, determine the thickness of any two target long truss wall panels, and calculate the third buckling load of any two target long truss wall panels in the constructed large thin-walled structure's stiffened wall panel finite element model based on the mechanical performance parameters, average strain and thickness.

[0116] For example, in CAE software, a finite element model of a large thin-walled structure with stiffened panels is established. Nonlinear analysis is performed under compression load conditions to extract the strain on the panels between any two target long girders. The schematic diagram of the long girders spacing is shown in the figure below. Figure 9 As shown, the third buckling load is calculated by the following formula:

[0117] N x =E*ε*t;

[0118] Among them, N x is the third buckling load, E is the mechanical property parameter, ε is the average strain on the wall panels between the two target long trusses, and t is the thickness.

[0119] The fourth buckling load of any two target long truss spans under four-side simply supported conditions is calculated using the following formula:

[0120]

[0121] D 11 is the bending stiffness coefficient of any two target long truss partitions 11, D 12 is the bending stiffness coefficient of any two target long truss partitions 12, D 22 is the bending stiffness coefficient of any two target long truss partition panels 22, D 66 is the bending stiffness coefficient in the direction of any two of the target long-truss partitions 66, and b is the outer spacing of the long-truss of any of the target long-truss partitions.

[0122] The fifth buckling load of any two target long truss spans under four-side clamped conditions is calculated by the following formula:

[0123]

[0124] D 11 is the bending stiffness coefficient of any two target long truss partitions 11, D 12 is the bending stiffness coefficient of any two target long truss partitions 12, D 22 is the bending stiffness coefficient of any two target long truss partition panels 22, D 66is the bending stiffness coefficient in the direction of any two of the target long-truss partitions 66, and b is the outer spacing of the long-truss of any of the target long-truss partitions.

[0125] Calculate the average value of N1 and N2, calculate the absolute value of the difference between the average value of N1 and N2 and the third buckling load, calculate the ratio of the absolute value to the third buckling load, and compare the ratio with a preset value.

[0126] It should be noted that the preset value can be set to 0.1, 0.11, 0.12, 0.13, etc., and the embodiment of the present application does not impose any specific restrictions on this.

[0127] When the ratio of the absolute value to the third buckling load is less than or equal to the preset value, the accuracy of the constructed finite element model of the stiffened wall panel of the large thin-walled structure is within the error range, and the calculated third buckling load is used as the target buckling load of any two target long truss span panels in the constructed finite element model of the stiffened wall panel of the large thin-walled structure.

[0128] Please refer to 10, the embodiment of the present application also provides an application Figure 1 The composite material reinforced wall panel opening weight reduction device 110 of the electronic device 100 includes:

[0129] Determination module 111 is used to determine the target buckling load of any two target long stringer spandrel panels in the constructed finite element model of the stiffened wall panels of the large thin-walled structure; determine the maximum deformation position of the stiffened wall panels in the finite element model of the stiffened wall panels, wherein the stiffened wall panels include the target long stringer spandrel panels;

[0130] a hole opening module 112 for opening holes of different preset diameters at the maximum deformation position and the center position of the reinforced wall panel to obtain a plurality of first wall panels;

[0131] The determining module 111 is further configured to determine a first buckling load of each of the first wall panels;

[0132] The acquisition module 113 is used to obtain each second buckling load greater than or equal to the target buckling load from each first buckling load; obtain the first wall panel corresponding to the maximum buckling load from each second buckling load, and perform hole drilling based on the hole drilling method of the first wall panel.

[0133] The present application further provides an electronic device 100, which includes a processor 130 and a memory 120. The memory 120 stores computer-executable instructions, which, when executed by the processor 130, implement the composite stiffened wall panel opening weight reduction method.

[0134] 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 reducing weight by opening holes in composite stiffened wall panels is implemented.

[0135] In the embodiments provided in this 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 architectures, functions and operations of the devices, methods and computer program products according to 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 the code, and the module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that 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 flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0136] In addition, the functional modules 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 this 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, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute 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), a random access memory (RAM), a magnetic disk or an optical disk.

[0137] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0138] The above descriptions are merely examples of various embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for reducing weight by opening holes in a composite reinforced wall panel, characterized in that: The method comprises: Determine the target buckling load of any two target long truss span panels in the constructed stiffened panel finite element model of large thin-walled structure; Determining a maximum deformation position of a stiffened panel in a stiffened panel finite element model, wherein the stiffened panel includes a target long stringer panel; Opening holes with different preset diameters at the maximum deformation position and the center position of the reinforced wall panel respectively to obtain a plurality of first wall panels; determining a first buckling load of each of the first wall panels; Obtaining each second buckling load greater than or equal to the target buckling load from each first buckling load; The first wall panel corresponding to the maximum buckling load is obtained from each second buckling load, and a hole is opened based on the hole opening method of the first wall panel.

2. The method according to claim 1, characterized in that The method further comprises: Determine a first diameter corresponding to a first hole at a maximum deformation position of a first wall panel corresponding to a maximum buckling load among the second buckling loads; comparing the first diameter to a first predetermined diameter; When the first diameter is greater than a first preset diameter, comparing the first diameter with a second preset diameter, wherein the first preset diameter is smaller than the second preset diameter; When the first diameter is greater than the second preset diameter, the first hole is reinforced.

3. The method according to claim 1, characterized in that The method further comprises: Determine a second diameter corresponding to a second hole at a center position of the first wall panel corresponding to a maximum buckling load among the second buckling loads; comparing the second diameter to a first predetermined diameter; When the second diameter is greater than the first preset diameter, comparing the second diameter with the second preset diameter, wherein the first preset diameter is smaller than the second preset diameter; When the second diameter is greater than the second preset diameter, the second hole is reinforced.

4. The method according to claim 1, characterized in that: The step of determining the target buckling loads of any two target long truss wall panels in the constructed stiffened wall panel finite element model of the large thin-walled structure includes: Determine the third buckling load of any two target long truss panels in the constructed stiffened panel finite element model of large thin-walled structure: Determine the fourth buckling load of any two target long truss spans under the condition of four-side simple support; Determine the fifth buckling load of any two target long truss spans under the condition of four-side clamping; calculating an average value of the fourth buckling load and the fifth buckling load; calculating an absolute value of a difference between the third buckling load and the average value; calculating a ratio of the absolute value to the third buckling load; comparing the ratio with a preset value; When the ratio is less than or equal to the preset value, the third buckling load is used as the target buckling load of any two target long truss interwall panels in the constructed stiffened wall panel finite element model of the large thin-walled structure.

5. The method according to claim 4, characterized in that The step of determining the third buckling load of any two target long truss wall panels in the constructed stiffened wall panel finite element model of the large thin-walled structure includes: Determining the mechanical property parameters of the constructed large thin-walled structure reinforced wall panel finite element model; Determine the average strain of any two target long stringer panels in the constructed stiffened panel finite element model of large thin-walled structure; Determine the thickness of any target long-stringer wall panels of any two target long-stringer wall panels; Based on the mechanical property parameters, average strain and thickness, the third buckling load of any two target long truss wall panels in the constructed stiffened wall panel finite element model of the large thin-walled structure is calculated.

6. The method according to claim 5, characterized in that The third buckling load satisfies the following formula: N x =E*e*t; Among them, N x is the third buckling load, E is the mechanical property parameter, ε is the average strain on the wall plate between the two target long girders, and t is the thickness.

7. The method according to claim 4, characterized in that The fourth buckling load satisfies the following formula: The fifth buckling load satisfies the following formula: Among them, D 11 is the bending stiffness coefficient of any two target long truss partition panels 11, D 12 is the bending stiffness coefficient of any two target long truss partition panels 12, D 22 is the bending stiffness coefficient of any two target long truss partition panels 22, D 66 is the bending stiffness coefficient in the direction of any two of the target long-truss partition panels 66, and b is the outer spacing of the long-truss of any of the target long-truss partition panels.

8. A composite reinforced wall panel opening weight reduction device, characterized in that: The device comprises: A determination module is used to determine the target buckling load of any two target long truss wall panels in the constructed stiffened wall panel finite element model of the large thin-walled structure; determine the maximum deformation position of the stiffened wall panel in the stiffened wall panel finite element model, wherein the stiffened wall panel includes the target long truss wall panel; A hole opening module, used for respectively opening holes of different preset diameters at the maximum deformation position and the center position of the reinforced wall panel to obtain a plurality of first wall panels; The determination module is further used to determine a first buckling load of each of the first wall panels; An acquisition module is used to obtain each second buckling load greater than or equal to the target buckling load from each first buckling load; obtain the first wall panel corresponding to the maximum buckling load from each second buckling load, and perform drilling based on the drilling method of the first wall panel.

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 readable 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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