Composite material stiffened wallboard structure
By employing a first long stringer flange, a second long stringer flange, and compensating shims in the composite material reinforced wall panel structure, a planar structure is formed, which solves the problem of uneven load transfer between adjacent long stringers, and achieves uniform load transfer and improved material utilization.
Patent Information
- Application Number
- CN202520167458.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-24
AI Technical Summary
In the prior art, the load transfer between adjacent stringers in composite material stiffened panel structures is uneven, resulting in uneven load distribution in the connection area.
The first long stringer flange and the second long stringer flange are spaced apart on the skin, and compensation shims are set to form a compensation zone. The first ply, the compensation shims and the second ply are made to form a plane through the first bonding zone and the second bonding zone, so as to achieve uniform load transfer.
This creates a plane between adjacent stringers, resulting in uniform load transfer, improved material utilization and assembly efficiency, and reduced manufacturing difficulty and stress at connection points.
Smart Images
Figure CN223672782U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to composite material structure design technical field especially relates to a composite material stiffened wallboard structure. BACKGROUND
[0002] Stiffened wallboard structure is one of common structure forms of composite material, and the stiffened wallboard includes skin and multiple hat type, T type, work type etc. stringers, and the wallboard needs to be connected with the frame structure of certain angle or perpendicular to the stringer usually, forms the fuselage structure that can bear multiple loads. The connecting area of frame and wallboard is mostly located in the skin and stringer bottom edge strip area between adjacent stringers, and this area usually includes more than one curved surface, and needs to be simplified or set compensation measures during assembly. The prior art usually integrates multiple stringers, and the bottom edge strip of adjacent stringers is merged to become part of the skin, so that the space between adjacent stringers becomes a curved surface, resulting in uneven load transfer. Therefore, there is an urgent need for a composite material stiffened wallboard structure to solve the above technical problems. SUMMARY
[0003] The utility model discloses a composite material stiffened wallboard structure, can form the plane between adjacent stringers, makes load transfer even.
[0004] To achieve this purpose, the utility model adopts the following technical scheme:
[0005] A composite material stiffened wallboard structure, comprising: first stringer edge strip, second stringer edge strip, compensation gasket and skin, the first stringer edge strip and the second stringer edge strip are spaced apart and arranged on the skin, the first stringer edge strip is provided with first ply, the second stringer edge strip is provided with second ply, the first ply is opposite and spaced apart with the second ply, so that the first ply and the second ply form a compensation area between the first ply and the second ply, the height of the first ply is less than the height of the first ply, the compensation gasket is provided with first bonding area and second bonding area, the first bonding area can cooperate with the first ply, and the second bonding area is bonded with the compensation area, so that the first ply, the compensation gasket and the second ply form a plane.
[0006] As a preferred technical scheme of the above-mentioned composite material stiffened wallboard structure, the first stringer edge strip is a nine-layer unidirectional belt structure.
[0007] As a preferred technical scheme of the above-mentioned composite material stiffened wallboard structure, the second stringer edge strip is a twelve-layer unidirectional belt structure.
[0008] As a preferred technical scheme of the above-mentioned composite material stiffened wallboard structure, the included angle between the first bonding area and the second bonding area is 135 °.
[0009] As a preferred technical scheme of the composite stiffened panel structure, the second lay-up is provided with an inclined surface, and an included angle between the inclined surface and the skin is 45 degrees.
[0010] As a preferred technical scheme of the composite stiffened panel structure, the skin is a nine-layer unidirectional tape structure.
[0011] As a preferred technical scheme of the composite stiffened panel structure, a section of the second bonding area is trapezoidal.
[0012] As a preferred technical scheme of the composite stiffened panel structure, the first stringer edge strip and the second stringer edge strip are both equal-width structures.
[0013] As a preferred technical scheme of the composite stiffened panel structure, the first stringer edge strip and the second stringer edge strip are hat-shaped structures, T-shaped structures or I-shaped structures.
[0014] As a preferred technical scheme of the composite stiffened panel structure, the skin is an equal-thickness structure or a variable-thickness structure.
[0015] The utility model has beneficial effects:
[0016] The utility model provides a composite stiffened panel structure. The composite stiffened panel structure comprises a first stringer edge strip, a second stringer edge strip, a compensation gasket and a skin, the first stringer edge strip and the second stringer edge strip are arranged at intervals on the skin, the first stringer edge strip is provided with a first lay-up, the second stringer edge strip is provided with a second lay-up, the first lay-up is opposite and arranged at intervals with the second lay-up to form a compensation area between the first lay-up and the second lay-up, the height of the first lay-up is less than the height of the first lay-up, the compensation gasket is provided with a first bonding area and a second bonding area, the first bonding area can cooperate with the first lay-up, and the second bonding area is bonded with the compensation area to form a plane with the first lay-up, the compensation gasket and the second lay-up. Compared with the prior art, the structure can form a plane between the first stringer edge strip and the second stringer edge strip, and load transmission is uniform. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the following description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and these drawings without paying creative labor for those skilled in the art.
[0018] Figure 1A first structure schematic view of the composite material stiffened wallboard structure is provided in the embodiments of the present utility model.
[0019] Figure 2 A second structure schematic view of the composite material stiffened wallboard structure is provided in the embodiments of the present utility model.
[0020] In the drawing,
[0021] 1, first stringer edge strip; 2, skin; 3, second stringer edge strip; 4, compensation gasket; 5, connecting frame; 6, first ply; 7, second bonding area; 8, second ply. DETAILED DESCRIPTION
[0022] The present utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, and not to limit the present utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present utility model are shown in the drawings, not all the structures.
[0023] In the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.
[0024] In the present utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include the direct contact of the first and second features, or the indirect contact of the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the vertical direction of the first feature above and oblique above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes the vertical direction of the first feature below and oblique below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0025] In the description of the present embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, 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, therefore it cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.
[0026] As Figure 1 and Figure 2 The utility model provides a kind of composite stiffened panel structure, which comprises a first stringer edge strip 1, a second stringer edge strip 3, a compensation gasket 4 and a skin 2.
[0027] Specifically, the first stringer edge strip 1 and the second stringer edge strip 3 are arranged at intervals on the skin 2. The first stringer edge strip 1 is provided with a first ply 6, and the second stringer edge strip 3 is provided with a second ply 8. The first ply 6 and the second ply 8 are arranged oppositely and at intervals, so as to form a compensation area between the first ply 6 and the second ply 8. The height of the first ply 6 is less than that of the second ply 8. The compensation gasket 4 is provided with a first fitting area and a second fitting area 7. The first fitting area can cooperate with the first ply 6, and the second fitting area 7 is fitted with the compensation area, so as to form a plane with the first ply 6, the compensation gasket 4 and the second ply 8. Compared with the prior art, the structure can form a plane between the first stringer edge strip 1 and the second stringer edge strip 3, so as to uniformly transmit the load. It should be noted that the fitting mode can be co-curing, co-bonding or secondary bonding, or normal temperature bonding.
[0028] Optionally, the composite stiffened panel structure further comprises a connecting frame 5. The first stringer edge strip 1 and the second stringer edge strip 3 are connected to the connecting frame 5, which can improve the stability of the composite stiffened panel structure.
[0029] Optionally, the first stringer edge strip 1 and the second stringer edge strip 3 are both of equal width structure. The first stringer edge strip 1 and the second stringer edge strip 3 are of hat-shaped structure, T-shaped structure or I-shaped structure. Specifically, the first stringer edge strip 1 and the second stringer edge strip 3 are integrally formed with the skin 2 by means of gluing or co-curing. The first stringer edge strip 1 and the second stringer edge strip 3 are of equal width structure or structure with small amplitude size variation close to equal width in the width direction. Compared with the form that the stringer edge strip is widened at the frame structure, the equal width design of the first stringer edge strip 1 and the second stringer edge strip 3 can effectively improve the material utilization rate, and the compensation gasket 4 is integrally formed, which reduces the use of the compensation gasket 4 during assembly, effectively improves the assembly efficiency, reduces the manufacturing difficulty, and reduces the nail hole extrusion stress at the connecting position. Further, the skin 2 is of equal thickness structure or variable thickness structure.
[0030] Optionally, the first stringer 1 is a nine-layer unidirectional tape structure; the second stringer 3 is a twelve-layer unidirectional tape structure; the skin 2 is a nine-layer unidirectional tape structure; the first stringer 1 and the second stringer 3 are integrally formed with the skin 2 by using a positive mold. Further, the first stringer 1, the second stringer 3 and the skin 2 are made of the same material; the angle between the first bonding area and the second bonding area 7 is 135°; the second layup 8 is provided with an inclined surface, and the angle between the inclined surface and the skin 2 is 45°; the cross section of the second bonding area 7 is trapezoidal.
[0031] Specifically, the following scheme is exemplarily given in the embodiment: the left side is the first layup 6, and the right side is the second layup 8; the first layup 6 is a nine-layer unidirectional tape design, and the second layup 8 is a twelve-layer unidirectional tape design; the material of the skin 2, the material of the first stringer 1 and the material of the second stringer 3 are consistent; the bottom edge of the first layup 6 is provided with a first bonding edge with a 45° bevel; the bottom edge of the second layup 8 is provided with a second bonding edge with a 45° bevel; the upper surface of the compensation gasket 4 is a plane; the first bonding area and the second bonding area 7 are located on the lower surface of the compensation gasket 4; the third bonding edge is arranged between the first stringer 1 and the second stringer 3; the second bonding area 7 is provided with a fourth bonding edge, a fifth bonding edge and a sixth bonding edge; the fourth bonding edge is bonded with the first bonding edge; the fifth bonding edge is bonded with the second bonding area 7; the third bonding edge is bonded with the sixth bonding edge; the angle between the first bonding area and the fourth bonding edge is 135°, so that the skin 2, the first stringer 1, the second stringer 3 and the compensation gasket 4 are integrally formed during the manufacturing process of the composite stiffened panel structure, and the local profile of the composite stiffened panel structure is simplified. Of course, the present application is not limited to the stringer bonding area on both sides; the first stringer 1 and the second stringer 3, the skin 2 and the compensation gasket 4 are not limited to using unidirectional tape material; the compensation gasket 4 is made of the same material as the first stringer 1 and the second stringer 3, and the single-layer thickness is close, which is beneficial to simplify the shape of the mold; the manufacturing method is not limited to using a hot press tank and a co-curing process; the angle between the first bonding area and the second bonding area 7 and the angle between the inclined surface and the skin 2 are determined according to the actual situation, which will not be described here.
[0032] In addition, the above is only the preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims
1. A composite stringer-stiffened panel structure, characterized by, The application relates to a first stringer (1), a second stringer (3), a compensating gasket (4) and a skin (2), the first stringer (1) and the second stringer (3) being arranged at intervals on the skin (2), the first stringer (1) being provided with a first ply (6), the second stringer (3) being provided with a second ply (8), the first ply (6) and the second ply (8) being arranged oppositely and at intervals so that a compensation area is formed between the first ply (6) and the second ply (8), the height of the first ply (6) being less than the height of the first ply (6), the compensating gasket (4) being provided with a first fitting area and a second fitting area (7), the first fitting area being capable of cooperating with the first ply (6), and the second fitting area (7) being fitted with the compensation area, so that the first ply (6), the compensating gasket (4) and the second ply (8) form a plane. The first stringer (1) is a nine-layer unidirectional tape structure.
2. A composite stringer panel structure according to claim 1, wherein The second stringer (3) is a twelve-layer unidirectional tape structure.
3. A composite stringer panel structure according to claim 2, wherein, The included angle between the first fitting area and the second fitting area (7) is 135 DEG.
4. A composite stringer panel structure according to any one of claims 1 to 3, wherein The second ply (8) is provided with an inclined surface, and the included angle between the inclined surface and the skin (2) is 45 DEG.
5. A composite stringer panel structure according to any one of claims 1 to 3, wherein The skin (2) is a nine-layer unidirectional tape structure.
6. A composite stringer panel structure according to any one of claims 1 to 3, wherein The second fitting area (7) is in the shape of a trapezoid.
7. A composite stringer panel structure according to any one of claims 1 to 3, wherein The first stringer (1) and the second stringer (3) are both in the shape of equal width.
8. A composite stringer panel structure according to any one of claims 1 to 3, wherein The first stringer (1) and the second stringer (3) are in the shape of a hat, a T or a work.
9. A composite stringer panel structure according to any one of claims 1 to 3, wherein The skin (2) is in the shape of equal thickness or variable thickness.
10. A composite stringer panel structure according to any one of claims 1 to 3, wherein