A method for controlling the curing deformation of composite material reinforced wall panels

Abstract

The present invention provides a method for controlling the curing deformation of a composite reinforced wall panel. The method comprises: disposing a metal plate on a side of the wall panel away from the stringers; laying a composite plate on a side of the metal plate away from the stringers to form a composite structural member, wherein the number of composite plates corresponds to the number of stringers, each composite plate is directly opposite the contact surface between each stringer and the wall panel, the material and layup of the composite plates are the same as those of the wall panel, the layup of the composite plates is symmetrical with the total layup of the stringers and the wall panel, the thickness of the composite plates is equal to the total thickness of the composite material at the contact surface between the stringers and the wall panel, the longitudinal width of the composite plates is consistent with the longitudinal width of the contact surface, and the circumferential width of the composite plates is consistent with the circumferential width of the contact surface; after the composite structural member is cured together, the metal plate and the composite plates are removed by mechanical processing to obtain a complete composite reinforced wall panel. The present invention achieves the purpose of controlling the curing deformation of the composite material and saves manufacturing costs.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material component manufacturing technology, and in particular to a method for controlling the curing deformation of a composite material reinforced wall panel. Background Art

[0002] Composite materials, characterized by their high strength and lightweight, are widely used in the manufacturing industry. However, their unique manufacturing processes also present unprecedented manufacturing challenges. When using composite materials to manufacture load-bearing structures, composite-reinforced panels are typically cured under high temperatures and pressures. Due to the unique properties of composite materials, which are a mixture of fibers and resins, composite-reinforced panels often deform after curing. This deformation is particularly multi-dimensional for complex composite-reinforced panels, significantly affecting the mechanical properties of the structure and creating significant difficulties in subsequent assembly.

[0003] Because composite material layups are composed of a variety of fiber orientations, current theoretical analyses of deformation are based on the layup orientation. Process-based control of curing deformation also relies on theoretical analysis combined with modifications to the surface of the tooling used to lay the composite material. These methods fail to accurately predict deformation of composite reinforced wall panels, creating uncertainty in the design of subsequent tooling. This can lead to unsatisfactory results for composite reinforced wall panels produced using modified tooling, necessitating the rework of the composite reinforced wall panels and resulting in unnecessary losses. Therefore, the present invention provides a method for controlling curing deformation of composite reinforced wall panels to address this issue. Summary of the Invention

[0004] The object of the present invention is to provide a method for controlling the curing deformation of a composite material reinforced wall panel so as to control the curing deformation of the composite material and thereby save manufacturing costs.

[0005] On the one hand, in order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0006] A method for controlling the curing deformation of a composite material reinforced wall panel, the composite material reinforced wall panel comprising a composite material wall panel and a plurality of composite material stringers, the wall panel and the plurality of stringers being symmetrically laid up, the stringers and the wall panel being both laid up from prepreg, the plurality of stringers being glued to the same side of the wall panel, the method comprising:

[0007] A metal plate is provided on a side of the wall panel away from the long stringer; the orthographic projections of all the long stringers on the wall panel are located within the orthographic projections of the metal plate on the wall panel;

[0008] A composite plate is laid on a side of the metal plate away from the stringer to form a composite structural member, wherein the number of the composite plates is the same as the number of the stringers, and the positions of the composite plates correspond one-to-one with the positions of the stringers; the material of the composite plate is the same as that of the wall panel, the ply of the composite plate is symmetrical with the total ply of the stringers and the wall panel, the thickness of the composite plate is equal to the total thickness of the composite material at the joining surface of the stringer and the wall panel, the azimuth width of the joining surface of the stringer and the wall panel is consistent with the azimuth width of the composite plate, and the circumferential width of the composite plate is consistent with the circumferential width of the joining surface;

[0009] After the composite structural members are solidified together, the metal plate and the composite plate are removed to obtain a composite material reinforced wall panel.

[0010] Furthermore, a metal plate is provided on one side of the wall panel away from the long stringer, comprising:

[0011] Placing the metal plate on a side of the wall panel away from the long stringers so that the orthographic projections of all the long stringers on the wall panel are located within the orthographic projections of the metal plate on the wall panel;

[0012] Applying force to the metal plate causes the metal plate and the wall panel to be glued together.

[0013] Furthermore, removing the metal plate and the composite plate includes:

[0014] The metal plate and the composite plate are removed by machining.

[0015] On the other hand, in order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0016] A composite structural member, comprising the composite material reinforced wall panel, metal plate and composite plate, wherein the composite material reinforced wall panel comprises a composite material wall panel and a plurality of composite material long stringers, wherein the wall panel and the plurality of said long stringers are symmetrically laid, and the plurality of said long stringers are glued to the same side of the wall panel, the metal plate is arranged on a side of the wall panel away from the long stringers, the orthographic projections of all the long stringers on the wall panel are located within the orthographic projections of the metal plate on the wall panel, and the composite plate is laid on the side of the metal plate away from the long stringers. On one side, the number of the composite plates is the same as the number of the long stringers, the positions of the composite plates correspond one-to-one with the positions of the long stringers, the material of the composite plates is the same as that of the wall panels, the layup of the composite plates is symmetrical with the total layup of the long stringers and the wall panels, the thickness of the composite plates is equal to the total thickness of the composite materials at the bonding surface between the long stringers and the wall panels, the heading width of the bonding surface between the long stringers and the wall panels is consistent with the heading width of the composite plates, and the circumferential width of the composite plates is consistent with the circumferential width of the bonding surface.

[0017] Furthermore, the metal plate includes several first metal plates and several second metal plates, the first metal plates are arranged on the side of the wall panel away from the long stringer, the number of the first metal plates is the same as the number of the long stringers, and the positions of the first metal plates correspond one-to-one to the positions of the long stringers, the second metal plates are arranged between two adjacent first metal plates to connect the two adjacent first metal plates, the composite plate is arranged on the side of the first metal plate away from the long stringer, and the thickness of the second metal plate is consistent with the thickness of the first metal plate.

[0018] Furthermore, the thickness of the first metal plate is: ,in is the thickness of the first metal plate, is the total thickness of the composite material at the contact surface between the long stringer and the wall panel, is the total modulus of the composite material at the contact surface between the long stringer and the wall panel, is the material modulus of the first metal plate.

[0019] Furthermore, the metal plate is made of any one of aluminum alloy, titanium alloy or stainless steel.

[0020] Furthermore, the heading width of the first metal plate is consistent with the heading width of the bonding surface.

[0021] Furthermore, a plurality of the second metal plates are evenly spaced and arranged, and a plurality of the second metal plates are perpendicular to the first metal plate.

[0022] Furthermore, the first metal plate and the second metal plate are both adhesively bonded to the wall panel.

[0023] Furthermore, a plurality of second metal plates are arranged perpendicular to the first metal plate, and the composite plate is adhesively bonded to the first metal plate.

[0024] Beneficial effects of the present invention:

[0025] The present invention utilizes the good ductility of the metal plate to greatly eliminate the interlaminar internal stress in the azimuth and circumferential directions of the composite material reinforced wall panel during the curing process. By arranging the composite plate, the composite structure formed by the composite material reinforced wall panel, the metal plate and the composite plate is a symmetrical layer with the metal plate as the symmetry center. The symmetrical layer with the metal plate as the symmetry center eliminates the warping caused by the asymmetrical layer at the bonding surface of the original long stringer and the wall panel, thereby effectively solving the deformation problem of the composite material reinforced wall panel during the curing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the composite reinforced wall panel of the present invention.

[0027] Figure 2 This is a schematic diagram of the deformation of the composite material reinforced wall panel of the present invention.

[0028] Figure 3 This is an overall flow chart of a method for controlling the curing deformation of composite material reinforced wall panels according to the present invention.

[0029] Figure 4 The present invention is a schematic diagram of a method for controlling the curing deformation of a composite material reinforced wall panel, in which a metal plate is arranged on a side of the wall panel away from the long stringer.

[0030] Figure 5 Schematic diagram of a composite structural member of the present invention.

[0031] Figure 6 It is a top view of the metal plate of the present invention.

[0032] Description of reference numerals:

[0033] 1. Composite material reinforced wall panel; 11. Wall panel; 12. Long stringer; 2. Metal plate; 21. First metal plate; 22. Second metal plate; 3. Composite plate. DETAILED DESCRIPTION

[0034] 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. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the invention belongs. The words "including" and similar words used in this article mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0035] Composite materials are characterized by high strength and light weight and are widely used in the manufacturing industry. However, their unique manufacturing process also brings unprecedented manufacturing difficulties. When using composite materials to manufacture composite reinforced wall panels 1, composite reinforced wall panels 1 need to be cured at high temperature and high pressure. Due to the special properties of composite materials themselves, namely, composite materials are a mixture of fibers and resins, composite reinforced wall panels 1 often deform after curing. Especially for composite reinforced wall panels 1 with complex structures, the deformation is multi-dimensional, which has a significant impact on the mechanical properties of the structure and causes great difficulties in subsequent assembly.

[0036] Since the composite material plies are composed of a variety of fiber directions, the current theoretical analysis of deformation is based on the ply direction, and the process-related control of curing deformation is also based on theoretical analysis combined with modification of the surface of the tooling for laying the composite material. These methods cannot achieve a reasonable accuracy in predicting the deformation of the composite material reinforced wall panel 1, which creates uncertainties in the design of the subsequent tooling, making it impossible for the composite material reinforced wall panel 1 made by the modified tooling to achieve satisfactory results, resulting in the need to redo the composite material reinforced wall panel 1 and causing unnecessary losses. It can be seen that it is difficult to effectively control the curing deformation of the composite material reinforced wall panel 1 by modifying the ply direction or the tooling surface. In this regard, this embodiment proposes a new structural design method for the problem of curing deformation of the composite material reinforced wall panel 1.

[0037] This embodiment provides a method for controlling the curing deformation of a composite material reinforced wall panel 1, wherein, referring to Figure 1 The composite reinforced wall panel 1 includes composite wall panels 11 and several composite stringers 12. Due to the inherent characteristics of composite materials, bending and twisting forces are generated within the composite reinforced wall panel 1, causing deformation after curing. This is primarily manifested in warping caused by the asymmetric layup formed between the stringers 12 and the wall panels 11 during assembly. To minimize deformation during curing, the wall panels 11 and the stringers 12 are laid up symmetrically. Each stringer 12 and wall panel 11 has its own structural design. Specifically, the stringers 12 and wall panels 11 have a specific layup sequence, and both are constructed from prepreg. In this embodiment, the stringers 12 have a symmetrical layup of [45 / 0 / 90 / -45 / 0]s, while the wall panels 11 have a symmetrical layup of [45 / -45 / 0 / 90 / 45 / -45]s. Several long stringers 12 are glued to the same side of the wall panel 11, and several long stringers 12 are arranged in parallel at intervals. Although the long stringers 12 and the wall panel 11 are designed to be symmetrically laid, theoretically no deformation will occur after curing, because the joints between the long stringers 12 and the wall panel 11 cannot meet the symmetrical laying design, they will cause great deformation, such as Figure 2 As shown, downward warping occurs in the heading direction and upward deformation occurs in the circumferential direction, resulting in an overall saddle-shaped warping. After gluing the stringer 12 and panel 11, a total ply is formed at the joint between the stringer 12 and panel 11. The total ply ratio of the stringer 12 and panel 11 is [45 / 0 / 90 / -45 / 0 / 0 / -45 / 90 / 0 / 45 / 45 / -45 / 0 / 90 / 45 / -45 / -45 / 45 / 90 / 0 / -45 / 45], which is symmetrical with the ply ratio at the joint between the stringer and panel.

[0038] Specifically, refer to Figure 3 and Figure 4 The method for controlling the curing deformation of the composite material reinforced wall panel 1 includes:

[0039] Step S1 : a metal plate 2 is arranged on a side of the wall panel 11 away from the stringers 12 , and the orthographic projections of all the stringers 12 on the wall panel 11 are located within the orthographic projections of the metal plate 2 on the wall panel 11 .

[0040] According to the manufacturing requirements of the composite material reinforced wall panel 1, a number of long stringers 12 are glued to the same side of the wall panel 11. The long stringers 12 are arranged in parallel at intervals. At this time, an asymmetric layer is generated at the bonding surface of the long stringers 12 and the wall panel 11. The asymmetric layer will deform during high temperature and high pressure curing. In order to reduce the curing deformation of the composite material reinforced wall panel 1, it is necessary to process the asymmetric layer. Therefore, a metal plate 2 is set on the side of the wall panel 11 away from the long stringers 12. The orthographic projections of all the long stringers 12 on the wall panel 11 are located within the orthographic projections of the metal plate 2 on the wall panel 11. The metal plate 2 is used as the base. The metal has good ductility and is used to offset the internal stress generated during the curing process. Electrochemical corrosion will occur between the metal plate 2 and the composite material. Therefore, the manufacturing material of the metal plate 2 can include any one of aluminum alloy, titanium alloy or stainless steel, preferably aluminum alloy. The long stringers 12 and the wall panels 11 are usually formed by laying down prepreg layer by layer. During processing, the prepreg is in a wet state. At this time, the metal plate 2 is placed on the side of the wall panel 11 away from the long stringers 12 so that the orthographic projections of all the long stringers 12 on the wall panel 11 are located within the orthographic projections of the metal plate 2 on the wall panel 11. Then, force is applied to the metal plate 2 to glue the metal plate 2 and the wall panel 11 together.

[0041] Step S2: Refer to Figure 3 and Figure 5 A composite plate 3 is laid on the side of the metal plate 2 away from the long stringer 12 to form a composite structural member. The number of composite plates 3 is the same as the number of long stringers 12, and the positions of the composite plates 3 correspond one-to-one with the positions of the long stringers 12. The material of the composite plates 3 is the same as that of the wall panel 11. The ply of the composite plates 3 is symmetrical with the total ply of the long stringers 12 and the wall panel 11. The thickness of the composite plate 3 is equal to the total thickness of the composite material at the bonding surface of the long stringer 12 and the wall panel 11. The longitudinal width of the composite plate 3 is consistent with the longitudinal width of the bonding surface, and the circumferential width of the composite plate 3 is consistent with the circumferential width of the bonding surface.

[0042] Specifically, a composite panel 3 is laid on the side of the metal panel 2 away from the stringers 12. This arrangement of the composite panels 3 ensures that the composite structure formed by the composite reinforced wall panel 1, the metal panel 2, and the composite panels 3 forms a symmetrical layer. The number of composite panels 3 is the same as the number of stringers 12. Each stringer 12 has a contact surface with the wall panel 11, and the position of the composite panels 3 corresponds one-to-one with the position of the stringers 12, with each composite panel 3 directly aligned with the contact surface between each stringer 12 and the wall panel 11. After gluing the stringer 12 and the wall panel 11, a total layup is formed at the joining surface of the stringer 12 and the wall panel 11. The total layup of the stringer 12 and the wall panel 11 is [45 / 0 / 90 / -45 / 0 / 0 / -45 / 90 / 0 / 45 / 45 / -45 / 0 / 90 / 45 / -45 / -45 / 45 / 90 / 0 / -45 / 45]s symmetrical. The material of the composite panel 3 is the same as that of the wall panel 11, and the layup of the composite panel 3 is symmetrical with the total layup of the stringer 12 and the wall panel 11. The thickness of the composite panel 3 is equal to the total thickness of the composite material at the joining surface of the stringer 12 and the wall panel 11. The longitudinal width of the composite panel 3 is consistent with the longitudinal width of the joining surface, and the circumferential width of the composite panel 3 is consistent with the circumferential width of the joining surface.

[0043] Step S3: After the composite structural components are solidified together, the metal plate 2 and the composite plate 3 are removed to obtain a complete composite material reinforced wall panel 1 .

[0044] Specifically, the composite structural parts are placed in an autoclave for high-temperature and high-pressure curing and molding. After the composite structural parts are cured together, the metal plate 2 and the composite plate 3 are removed from the composite material reinforced wall panel 1 by mechanical processing, thereby obtaining the composite material reinforced wall panel 1. The composite material reinforced wall panel 1 is a combination structure of a long stringer 12 and a wall panel 11, and the obtained composite material reinforced wall panel 1 is flat and does not have deformation or warping.

[0045] This embodiment utilizes the good ductility of the metal plate 2 to greatly eliminate the interlaminar internal stress of the composite material reinforced wall panel 1 in the navigating and circumferential directions during the curing process of the composite material reinforced wall panel 1. By arranging the composite plate 3, the composite structure formed by the composite material reinforced wall panel 1, the metal plate 2 and the composite plate 3 is a symmetrical layup with the metal plate 2 as the symmetry center. The symmetrical layup with the metal plate 2 as the symmetry center eliminates the warping caused by the asymmetric layup at the bonding surface of the original long stringer 12 and the wall panel 11, thereby effectively solving the deformation problem of the composite material reinforced wall panel 1 during the curing process.

[0046] This embodiment also provides a composite structural member, referring to Figure 5 and Figure 6, including the above-mentioned composite reinforced wall panel 1, metal plate 2 and composite plate 3, the composite reinforced wall panel 1 includes a composite wall panel 11 and a plurality of composite long stringers 12, the wall panel 11 and the plurality of long stringers 12 are symmetrically laid, the plurality of long stringers 12 are glued to the same side of the wall panel 11, the metal plate 2 is arranged on the side of the wall panel 11 away from the long stringer 12, the orthographic projection of all the long stringers 12 on the wall panel 11 is located within the orthographic projection of the metal plate 2 on the wall panel 11, and the composite plate 3 is laid on the side away from the metal plate 2 On one side of the stringer 12, the number of composite panels 3 is the same as the number of stringers 12, the positions of the composite panels 3 correspond one-to-one with the positions of the stringers 12, the material of the composite panels 3 is the same as that of the wall panels 11, the layup of the composite panels 3 is symmetrical with the total layup of the stringers 12 and the wall panels 11, the thickness of the composite panels 3 is equal to the total thickness of the composite material at the bonding surface between the stringers 12 and the wall panels 11, the heading width of the bonding surface between the stringers 12 and the wall panels 11 is consistent with the heading width of the composite panels 3, and the circumferential width of the composite panels 3 is consistent with the circumferential width of the bonding surface.

[0047] Furthermore, the metal plate 2 includes a plurality of first metal plates 21 and a plurality of second metal plates 22, both of which are adhesively bonded to the wall panel 11. The first metal plates 21 are positioned on the side of the wall panel 11 facing away from the stringers 12. The number of first metal plates 21 is the same as the number of stringers 12, and the positions of the first metal plates 21 correspond one-to-one with the positions of the stringers 12. Each first metal plate 21 is aligned with the contact surface between each stringer 12 and the wall panel 11, and the longitudinal width of the first metal plates 21 is consistent with the longitudinal width of the contact surface. The second metal plates 22 are positioned between two adjacent first metal plates 21 to connect them, thereby improving the structural stability of the metal plate 2. The plurality of second metal plates 22 are evenly spaced and perpendicular to the first metal plates 21. The composite plate 3 is positioned on the side of the first metal plate 21 facing away from the stringers 12 and adhesively bonded to the first metal plate 21.

[0048] The composite reinforced wall panel 1 is exposed to a high temperature during curing, typically reaching 180 degrees Celsius. Due to thermal expansion, the metal plate 2 may also expand and deform. The metal plate 2 is configured to include a plurality of first metal plates 21 and a plurality of second metal plates 22. The second metal plates 22 are positioned between two adjacent first metal plates 21, connecting the two adjacent first metal plates 21 to form a single mesh metal plate 2. Compared to using a single metal plate 2, this configuration allows the metal plate 2 to be manufactured more lightweight, thereby reducing the probability of expansion. The lightweight metal plate 2 also facilitates the transport and transfer of the composite reinforced wall panel 1, while also reducing the material used for the metal plate 2 and saving costs. Furthermore, the metal plate 2 is configured to include a plurality of first metal plates 21 and a plurality of second metal plates 22. The second metal plates 22 are positioned between two adjacent first metal plates 21, connecting the two adjacent first metal plates 21 to form a single mesh metal plate 2. The mesh metal plate 2 also facilitates hot air circulation during high-temperature curing, facilitating processing.

[0049] Specifically, the thickness of the first metal plate 21 is: ,in is the thickness of the first metal plate 21, is the total thickness of the composite material at the contact surface between the long stringer 12 and the wall panel 11, is the total modulus of the composite material at the contact surface between the long stringer 12 and the wall panel 11, is the material modulus of the first metal plate 21. The purpose of reducing the curing deformation of the composite material reinforced wall panel 1 can be better achieved by reasonably setting the thickness of the first metal plate 21. Since the composite material reinforced wall panel 1 will expand and contract due to heat during the curing process, internal stress will be generated in the composite material reinforced wall panel 1. The internal stress will cause the composite material reinforced wall panel 1 to expand and contract. Therefore, it is necessary to allow the metal plate 2 and the composite material reinforced wall panel 1 to deform together, and ensure that the metal plate 2 and the composite material reinforced wall panel 1 deform in the same way. The degree of deformation of the metal plate 2 is determined by the thickness of the metal plate 2 and the material of the metal plate 2 itself. Therefore, the thickness of the first metal plate 21 is calculated by the above formula so that the deformation of the metal plate 2 and the composite material reinforced wall panel 1 can be consistent. The thickness of the second metal plate 22 is consistent with the thickness of the first metal plate 21.

[0050] The composite structural member provided in this embodiment, which is formed by the composite material reinforced wall panel 1, the metal plate 2 and the composite plate 3, is a symmetrical layer with the metal plate 2 as the symmetry center. The good ductility of the metal plate 2 is utilized to greatly eliminate the interlaminar internal stress of the composite material reinforced wall panel 1 in the axial and circumferential directions during the curing process of the composite material reinforced wall panel 1. After the curing is completed, the metal plate 2 and the composite plate 3 can be removed from the composite material reinforced wall panel 1 by mechanical processing. In this embodiment, a cutting machine is used to cut the bonding area between the metal plate 2 and the wall panel 11. The cutting machine cuts on the side close to the metal plate 2. After cutting, a grinder is used to grind the cut surface to obtain the composite material reinforced wall panel 1. The composite material reinforced wall panel 1 is a combination structure of a long stringer 12 and a wall panel 11. The obtained composite material reinforced wall panel 1 is flat and does not have deformation or warping. The use of symmetrical plies with the metal plate 2 as the symmetry center eliminates the warping caused by the asymmetrical plies at the bonding surface of the original long stringer 12 and the wall panel 11. By using this composite structural part to produce the composite material reinforced wall panel 1, the deformation problem of the composite material reinforced wall panel 1 during the curing process can be effectively solved.

[0051] Beneficial effects of the present invention:

[0052] The present invention utilizes the good ductility of the metal plate 2 to greatly eliminate the interlaminar internal stress of the composite material reinforced wall panel 1 in the navigating direction and the circumferential direction during the curing process of the composite material reinforced wall panel 1. By arranging the composite plate 3, the composite structure formed by the composite material reinforced wall panel 1, the metal plate 2 and the composite plate 3 is a symmetrical layup with the metal plate 2 as the symmetry center. The symmetrical layup with the metal plate 2 as the symmetry center eliminates the warping caused by the asymmetric layup at the bonding surface of the original long stringer 12 and the wall panel 11, thereby effectively solving the deformation problem of the composite material reinforced wall panel 1 during the curing process.

[0053] Although embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that various modifications and variations of these embodiments are possible. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described herein. Furthermore, the invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

[0054] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

Claims

1. A method for controlling the curing deformation of a composite reinforced wall panel, characterized in that: The composite material reinforced wall panel (1) comprises a composite material wall panel (11) and a plurality of composite material long stringers (12), the wall panel (11) and the plurality of the long stringers (12) are all symmetrically laid, the long stringers (12) and the wall panel (11) are both laid out from prepreg, and the plurality of the long stringers (12) are glued to the same side of the wall panel (11), and the method comprises: A metal plate (2) is provided on a side of the wall panel (11) away from the long stringer (12); the orthographic projections of all the long stringers (12) on the wall panel (11) are located within the orthographic projections of the metal plate (2) on the wall panel (11); A composite plate (3) is laid on a side of the metal plate (2) away from the long stringer (12) to form a composite structural member, the number of the composite plates (3) is the same as the number of the long stringers (12), and the positions of the composite plates (3) correspond one-to-one to the positions of the long stringers (12); the material of the composite plate (3) is the same as that of the wall panel (11), the ply of the composite plate (3) is symmetrical with the total ply of the long stringer (12) and the wall panel (11), the thickness of the composite plate (3) is equal to the total thickness of the composite material at the bonding surface of the long stringer (12) and the wall panel (11), the azimuth width of the bonding surface of the long stringer (12) and the wall panel (11) is consistent with the azimuth width of the composite plate (3), and the circumferential width of the composite plate (3) is consistent with the circumferential width of the bonding surface; After the composite structural parts are solidified together, the metal plate (2) and the composite plate (3) are removed to obtain the composite material reinforced wall panel (1).

2. The method for controlling the curing deformation of a composite material reinforced wall panel according to claim 1, wherein: A metal plate (2) is provided on a side surface of the wall panel (11) away from the long stringer (12), comprising: Placing the metal plate (2) on a side of the wall panel (11) away from the long stringers (12) so that the orthographic projections of all the long stringers (12) on the wall panel (11) are located within the orthographic projections of the metal plate (2) on the wall panel (11); Force is applied to the metal plate (2) so that the metal plate (2) and the wall plate (11) are glued together.

3. The method for controlling the curing deformation of a composite material reinforced wall panel according to claim 1, wherein: Removing the metal plate (2) and the composite plate (3) comprises: The metal plate (2) and the composite plate (3) are removed by mechanical processing.

4. A composite structural part, characterized in that: The invention comprises a composite material reinforced wall panel (1), a metal plate (2) and a composite plate (3) as described in claim 1, wherein the composite material reinforced wall panel (1) comprises a composite material wall panel (11) and a plurality of composite material long stringers (12), the wall panel (11) and the plurality of the long stringers (12) are symmetrically laid, the plurality of the long stringers (12) are glued to the same side of the wall panel (11), the metal plate (2) is arranged on a side of the wall panel (11) away from the long stringers (12), the orthographic projections of all the long stringers (12) on the wall panel (11) are located within the orthographic projections of the metal plate (2) on the wall panel (11), and the composite plate (3) is laid on the side of the metal plate (2) away from the long stringers (12). On one side of the long stringer (12), the number of the composite panels (3) is the same as the number of the long stringers (12), the positions of the composite panels (3) correspond one-to-one to the positions of the long stringers (12), the material of the composite panels (3) is the same as that of the wall panels (11), the ply of the composite panels (3) is symmetrical with the total ply of the long stringers (12) and the wall panels (11), the thickness of the composite panels (3) is equal to the total thickness of the composite material at the joining surface of the long stringers (12) and the wall panels (11), the azimuth width of the joining surface of the long stringers (12) and the wall panels (11) is consistent with the azimuth width of the composite panels (3), and the circumferential width of the composite panels (3) is consistent with the circumferential width of the joining surface.

5. A composite structural member according to claim 4, characterized in that: The metal plate (2) includes a plurality of first metal plates (21) and a plurality of second metal plates (22), wherein the first metal plates (21) are arranged on a side of the wall panel (11) away from the long stringer (12), the number of the first metal plates (21) is the same as the number of the long stringer (12), and the position of the first metal plates (21) corresponds to the position of the long stringer (12) one-to-one, and the second metal plates (22) are arranged between two adjacent first metal plates (21) to connect the two adjacent first metal plates (21), and the composite plate (3) is arranged on a side of the first metal plate (21) away from the long stringer (12), and the thickness of the second metal plate (22) is consistent with the thickness of the first metal plate (21).

6. A composite structural member according to claim 5, characterized in that: The thickness of the first metal plate (21) is: ,in is the thickness of the first metal plate (21), is the total thickness of the composite material at the joining surface between the long stringer (12) and the wall panel (11), is the total modulus of the composite material at the contact surface between the long stringer (12) and the wall panel (11), is the material modulus of the first metal plate (21).

7. A composite structural member according to claim 4, characterized in that: The metal plate (2) is made of any one of aluminum alloy, titanium alloy or stainless steel.

8. The composite structural member according to claim 5, characterized in that: The heading width of the first metal plate (21) is consistent with the heading width of the bonding surface.

9. The composite structural member according to claim 5, characterized in that: The plurality of second metal plates (22) are evenly spaced and arranged, and the plurality of second metal plates (22) are all arranged perpendicular to the first metal plate (21).

10. The composite structural member according to claim 5, characterized in that: The first metal plate (21) and the second metal plate (22) are both glued to the wall panel (11), and the composite plate (3) is glued to the first metal plate (21).

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