Method for producing a core layer for a composite component and composite component and method for producing the same

By varying core layer cell properties in composite components, the method optimizes load distribution and stability while maintaining lightweight construction, addressing inefficiencies in symmetrical honeycomb structures.

DE102020132479B4Active Publication Date: 2025-10-16DEUTSCHES ZENTRUM FÜR LUFT UND RAUMFAHRT E V
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Patent Information

Application Number
DE102020132479
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2020-12-07
Publication Date
2025-10-16
Estimated Expiration
2040-12-07

AI Technical Summary

Technical Problem

Existing composite components in sandwich construction fail to evenly distribute loads due to symmetrical honeycomb structures, leading to inefficient load distribution and potential weight inefficiencies.

Method used

A method for producing a core layer with varying cell properties, such as different base surface areas, shapes, volumes, and orientations, tailored to specific load distributions, using a quasi-endless material and automated manufacturing to optimize stability and weight.

Benefits of technology

The method ensures optimal load distribution and reduced weight by adapting core layer cells to prevailing conditions, enhancing stability without significant weight increase, and potentially reducing weight further than standard honeycomb structures.

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Abstract

Method for producing a core layer (13) for a composite component (10) produced in sandwich construction, the method comprising the following steps: - Providing a core layer material (310) as a quasi-endless material at a production plant (300); - rolling out the core layer material (310); - cutting the core layer material (310) into individual elements (320) using a cutting device (330) and / or a cutting punch (332); - making further cuts (340) on the cut elements (320) which later form the corresponding walls of the core layer cells; - wherein the additional cuts (340) result from manufacturing data and a previously carried out optimization of the core layer (13) with regard to stability and weight for adaptation to the prevailing loading conditions in order to thereby specifically vary cell properties of the individual core layer cells; - arranging the cut elements (320) with their cuts (340) one above the other to form an element stack (350), wherein additional spacers or adhesive points (360) are introduced between the individual layers of the elements (320) in order to form the specific geometry and shape of the core layer (13); - Pulling apart the completely manufactured element stack (350), resulting in the core layer (13).
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Description

[0001] The invention relates to a method for producing a core layer for a composite component produced in a sandwich construction, as well as to such a composite component and a method for producing it, wherein the composite component has at least two outer, flat cover layers and an intermediate core layer having a plurality of core layer cells. Each core layer cell has a base area and a cell wall enclosing the base area and forming a cavity.

[0002] Composite components made from various materials in a sandwich construction are particularly well-suited for lightweight construction. Such a sandwich component typically consists of two outer cover layers, which are particularly flat and define the outer boundary of the component, and an intermediate core layer, which often has a honeycomb structure. This honeycomb or cellular structure creates a particularly lightweight and particularly flexurally stable structure, which is protected by the two outer cover layers.

[0003] Such a core layer, also called a honeycomb layer, of a composite component in sandwich construction therefore has, according to the generic term, a large number of cells or core layer cells that form a cavity that can be filled with a medium or evacuated. In a honeycomb structure, such a cavity is formed, for example, by a cell wall that encloses a base area of ​​the honeycomb cell. In a classic honeycomb structure, the base area of ​​the honeycomb always has a hexagonal base area of ​​the same size, which is enclosed by the cell wall, resulting in a hexagonal cell. The base area can be covered by the two outer cover layers so that the resulting cavity is completely sealed. It is also conceivable, however, that the base areas are closed off by an additional element.

[0004] US Pat. No. 3,182,339 A discloses an artificial honeycomb structure for sandwich composite components. The core layer consists of two offset layers. Each of these offset layers contains a large number of cells. The offset arrangement of these cells allows for significantly more effective and better absorption of bending loads.

[0005] Due to the constantly symmetrically repeating cell shape of such a honeycomb structure, bending and torsional loads acting on the composite component can be very effectively absorbed by the core layer. However, the disadvantage is that the load acting on such a composite component during its intended use is not evenly distributed across the entire surface of the composite component.

[0006] DE 89 15 724 U1 describes a lightweight panel for vehicle interiors. The lightweight panel consists of a panel core with a honeycomb structure and at least one layer covering the open honeycombs in the surface area of ​​the panel core, as well as elements attached to the panel core for edge covering and for anchoring fittings or connecting devices. In the connection area of ​​the elements, the panel core has an irregular shape determined by the honeycomb structure, with fully or partially open honeycombs. Therefore, the elements are cast directly onto the panel core to fill the fully or partially open honeycombs with plastic.

[0007] DE 20 2018 107 378 U1 relates to a sandwich panel with acoustic damping properties, which comprises a supporting core with a honeycomb structure, two cover layers and a damping filling material made of expanded glass, expanded clay or inorganic materials.

[0008] DE 10 2011 017 353 A1 discloses a sandwich assembly with a core layer and a vault-structured outer layer, as well as a method for producing such a sandwich assembly. The core layer of the sandwich assembly can have cells adapted to a force distribution within the sandwich component, whereby the core can consist of a single- or multi-part plastic part made of foam or an injection-molded part.

[0009] From DE 10 2014 000 673 A1 a semi-finished product for the production of a honeycomb structure of a composite component is known, wherein the semi-finished product is formed from two elongated material strips which are placed one above the other and connected to each other at connection points arranged at a distance from one another in the longitudinal direction.

[0010] It is an object of the present invention to provide an improved method for producing a core layer for a composite component, an improved composite component and an improved method for producing the same, which are particularly well adapted to the prevailing conditions in the intended use, without neglecting the aspect of lightweight construction.

[0011] The object is achieved according to the invention with the method for producing a core layer according to claim 1, the method for producing a composite component according to claim 2, and the composite component according to claim 8. Advantageous embodiments of the invention can be found in the corresponding subclaims.

[0012] According to claim 1, a method for producing a core layer for a composite component produced in sandwich construction is claimed, the method comprising the following steps: - Providing a core layer material as a quasi-endless material at a production facility; - Rolling out the core layer material; - Cutting the core layer material into individual elements using a cutting device and / or a cutting punch; - whereby the cuts result from manufacturing data and a previously carried out optimization of the core layer with regard to stability and weight to adapt to the prevailing loading conditions in order to specifically vary the cell properties of the individual core layer cells; - Arranging the cut elements with their cuts on top of each other to form an element stack, with additional spacers or adhesive points being introduced between the individual layers of the elements in order to form the specific geometry and shape of the core layer; - Pulling apart the fully manufactured element stack, resulting in the core layer.

[0013] According to claim 2, a method for producing a composite component in sandwich construction is claimed, the method comprising the following steps: - Providing at least two flat covering layers; - providing a core layer provided between the cover layers, which core layer has a plurality of core layer cells, each core layer cell having a base area and a cell wall enclosing the base area and forming a cavity; and - Arranging the cover layers on the core layer so that the core layer is provided between the cover layers in order to produce the composite component; - Providing a core layer in which at least one cell property is determined in each case for at least some of the core layer cells as a function of a load distribution of the composite component to be produced, so that at least two core layer cells differ from one another with regard to at least one cell property, wherein the core layer is produced according to the method described above.

[0014] According to claim 8, a composite component manufactured using a sandwich construction is claimed. The composite component comprises at least two outer, flat cover layers and an intermediate core layer having a plurality of core layer cells, each core layer cell having a base surface and a cell wall enclosing the base surface and forming a cavity. The core layer is manufactured according to the method described above.

[0015] It is provided that at least two core layer cells, preferably three or more core layer cells of the core layer, which are each surrounded on all sides by other core layer cells, are different from one another with regard to at least one cell property.

[0016] Accordingly, a composite component is proposed in which two or more core layer cells differ from one another with respect to at least one cell property, thus disrupting the otherwise familiar symmetrical arrangement of the core layer cells within the core layer. This allows the core layer to be adapted to the prevailing loading conditions by adapting the core layer cells to the loading during intended use with at least one cell property.

[0017] Cell properties are understood, in particular in the sense of the present invention, to be the surface area of ​​the base area of ​​a core layer cell, the base area shape of the base area, the volume of the cavity of a core layer cell and / or the orientation of the core layer cell within the core layer.

[0018] By varying one or more of these cell properties within the core layer, the entire composite component can be optimally adapted to the expected loads. For example, it is conceivable that in areas where high loads are expected, the surface area of ​​the core layer cells or the volume of the voids is smaller than in areas with lower loads, so that the number of core layer cells is higher in areas with high loads than in areas with low loads.

[0019] This ensures that composite components in sandwich construction can be adapted to prevailing conditions without losing sight of the aspect of lightweight construction. By specifically adapting the core layer cells and varying their cell properties, the core layer is optimally adapted to the expected loads without introducing significant additional weight into the composite component. What's more, by specifically adapting the core layer cells to the expected loads, a composite component can potentially be reduced in weight even further compared to a standard honeycomb structure. The cell properties of the core layer cells are particularly adapted or varied for the specific application (across the entire core layer or across all core layer cells of the core layer). The variation can be carried out and developed using an optimization algorithm.

[0020] The cover layers can be made of a fiber composite material comprising a fiber material and a matrix material embedding the fiber material. Such a fiber composite material can, for example, comprise a glass fiber material or a carbon fiber material. Various plastics, such as thermoplastics or thermosetting plastics, can be considered as the matrix material.

[0021] The core layer and the core layer cells formed within it can be made of a lightweight material, such as a plastic or a metal. Examples of suitable materials include aluminum or sheet metal.

[0022] According to an additional or alternative embodiment, it is provided that the at least two core layer cells have different surface areas of the base area. This allows different variations of the core layer cells to be created in terms of volume. Core layer cells with a base area that have a small surface area can, as expected, also have a smaller volume of the cavities, whereby more core layer cells can be implemented per area of ​​the composite component. This increases stability. Conversely, core layer cells can be provided with base areas that have a larger surface area, so that fewer core layer cells are present per area of ​​the composite component.

[0023] According to an additional or alternative embodiment, it is provided that the at least two core layer cells have different base surface shapes. The base surface shapes can differ in terms of the type and geometry of the shape. For example, the number of corners can vary, so that the first core layer cell, for example, has a base surface that has more corners than the base surface of the second core layer cell. However, it is also conceivable that the connection between two corners of a base surface varies from straight to curved between the core layer cells. The shape of the base surface determines the shape of the core layer cell and thus also the shape of the wall, so that the stability of the core layer cell can be influenced by the shape of the base surface.The corresponding shape of the base area thus generates a wall for a core layer cell that can be optimally adapted to prevailing loading conditions (for example, in such a way that part of the wall of a core layer cell runs at least partially in the loading direction or in a main loading direction).

[0024] According to an additional or alternative embodiment, the at least two core layer cells have different cavity volumes. By varying the volumes of the cavities of different core layer cells, the number of core layer cells per surface can be varied in order to adapt the core layer to a given load. The more core layer cells are provided per surface, the better the loads can be dissipated.

[0025] According to an additional or alternative embodiment, the at least two core layer cells have an identical base surface shape, but are aligned differently from each other. By varying the alignment of identical core layer cells, expected loads or load distribution can also be accommodated.

[0026] According to an additional or alternative embodiment, a supporting wall is provided which has a first section that forms part of the wall of the first core layer cell, and a second section that is different from the first section and forms part of the wall of the second core layer cell. As a result, two or more core layer cells can be connected by a common, in particular homogeneously extending supporting wall that is in particular adapted to a corresponding loading direction. The supporting wall at least partially forms a corresponding part of the wall of a respective core layer cell and connects them accordingly. Such a common, in particular homogeneously extending supporting wall is also a corresponding cell property.

[0027] All of the previously described variations of cell properties can be present alternatively or in combination in order to optimally adapt the composite component to the prevailing conditions and to take into account the aspect of lightweight construction.

[0028] According to an additional or alternative embodiment, it is provided that for at least some of the core layer cells, a cell property is selected in each case as a function of a load distribution of the composite component to be produced.

[0029] In the method for producing a composite component according to claim 2, a core layer is provided which is to be used for producing the composite component in sandwich construction, wherein the core layer has core layer cells in which at least one cell property is determined as a function of a load distribution of the composite component to be produced, so that at least two core layer cells differ from one another with regard to at least one cell property which was determined in particular on the basis of the load distribution.

[0030] A method is thus provided for producing a composite component in sandwich construction, in which the core layer cells of the core layer are adapted to the expected load distribution by varying their cell properties depending on the load distribution.

[0031] According to an additional or alternative embodiment, it is provided that the core layer is provided in such a way that the at least two core layer cells have mutually different surface areas of the base surfaces, mutually different base surface shapes of the base surfaces and / or mutually different volumes of the cavities.

[0032] According to an additional or alternative embodiment, it is provided that the core layer is provided in such a way that the at least two core layer cells have an identical base surface shape of the base surfaces, which, however, are aligned differently from one another.

[0033] According to an additional or alternative embodiment, it is provided that the load distribution has a first region in which the load on the composite component is higher than in a second region different from the first region, wherein the core layer is provided such that the core layer cells in the first region have smaller surface areas of the base surfaces and / or smaller volumes of the cavities than the core layer cells in the second region.

[0034] According to an additional or alternative embodiment, it is provided that first the load distribution of the composite component to be produced is determined in a proper use by means of a computing unit, a three-dimensional model of the core layer including the core layer cells is created by means of the computing unit, in which at least one cell property of the core layer cells is determined as a function of the determined load distribution, manufacturing data as a function of the three-dimensional model are generated by means of the computing unit and the core layer is then manufactured automatically by means of a manufacturing system as a function of the generated manufacturing data in order to provide the core layer.

[0035] First, a load distribution is calculated using a virtual model of the composite component to be manufactured, specifically during its intended use. This load distribution can specify the load at any point on the composite component that acts on the component during its intended use. Based on this load distribution and the virtual model of the composite component to be manufactured, a three-dimensional model of the core layer is then created, which includes the generation of the core layer cells in the three-dimensional model. At least one cell property of the core layer cells is determined based on the determined load distribution.

[0036] The cell properties of the core layer cells, for example the surface areas of the base areas, the shape of the base area, the volumes of the cavities, the arrangement and course of retaining walls and / or the alignment of the core layer cells can be optimized so that in the respective area of ​​a core layer cell, this is optimally adapted to the prevailing loading conditions and at the same time the lowest possible weight, i.e. little material is used, is achieved. The optimization is therefore carried out with regard to the boundary conditions of maximum stability and minimum weight. Based on the three-dimensional model of the core layer, manufacturing data is now generated in order to manufacture the core layer automatically using a production system. The core layer manufactured in this automated manner is then covered by the provided cover layers, i.e. the components are joined together to produce the composite component.

[0037] According to an additional or alternative embodiment, it is provided that the course of at least one supporting wall, which has a first section that forms part of the wall of a first core layer cell, and a second section different from the first section that forms part of the wall of a second core layer cell, is determined as a cell property depending on the determined load distribution.

[0038] The invention is explained in more detail by way of example with reference to the accompanying figures. They show: Fig. 1 Representation of a basic structure of a composite component according to the state of the art; Fig. 2 Representation of a core layer according to the state of the art; Fig. 3 Representation of a component load; Fig. 4 Schematic representation of the process according to the invention; Fig. 5 Representation of a core layer according to the present invention; Fig. 6 Schematic representation of an automated process.

[0039] Fig. 1 shows a composite component 10, which generically has a first cover layer 11 and a second cover layer 12 as well as an intermediate core layer 13. The Fig. The composite component 10 shown in Figure 1 shows the standard structure of such a composite component 10 in a sandwich construction, as is known from the prior art. The first cover layer 11 is arranged in an adhesive, cohesive, and / or material-locking manner to a first side of the core layer 13 by means of a first adhesive layer 11a, while the second cover layer 12 is arranged in an adhesive, cohesive, and / or material-locking manner to the second side of the core layer 13 opposite the first side of the core layer 13 by means of a second adhesive layer 12a. The core layer 13 consists of a honeycomb structure, wherein all the honeycombs of the honeycomb structure are uniform and evenly distributed over the entire surface of the core layer 13.

[0040] Fig. 2 shows an enlarged section of such a core layer 13 with a honeycomb structure, wherein the Fig. 2 is known from the prior art and has a plurality of honeycombs or core layer cells 20 arranged over the entire surface of the core layer 13 to form a honeycomb-shaped structure. Each core layer cell 20 has a base area 21 which is Fig. 2 is a hexagonal surface. This hexagonal base surface 21 is enclosed by a cell wall 22, resulting in a core layer cell 20 with a cavity 23. Starting from the base surface 21, the cell wall 22 extends toward the opposite side of the core layer 13, creating a body whose side surfaces are arranged along the base surface 21.

[0041] The Fig. 1 shown composite component 10 with the Fig. The core layer 13 shown in Figure 2 has, in its intended use, a corresponding load absorption which Fig. 3 is shown schematically. In the embodiment of the Fig. 3, the loading is carried out in such a way that the composite component 10 is firmly clamped at the four corners of the composite component 10 and a corresponding maximum load occurs in the center of the composite component 10. Such a load simulation results in a load distribution 30, which indicates the load on the composite component 10 during intended use. Such a load distribution 30 can indicate a corresponding force or load acting at the respective position or location for at least some or all positions or locations on the composite component 10. Of course, other forms of loading are also conceivable, such as torsional loads, bending loads, or tensile and compressive loads. Fig. The load distribution 30 shown in Figure 3 is shown only as an example.

[0042] Fig. 4 shows the basic process for manufacturing the composite component 10 shown in the previous figures. First, in the first step 100, a load distribution 30 is created, as shown by way of example in Fig. 3. Subsequently, in the subsequent second step 110, a 3-dimensional model of the core layer 13 including the core layer cells 20 is determined. Based on the previously determined load distribution 30 and, if applicable, a model of the component to be manufactured, the cell properties of the core layer cells 20 are determined such that the core layer cells 20 can accommodate the previously determined load distribution 30 with regard to the optimization conditions (maximum stability, minimum weight).

[0043] In particular, cell properties such as the size, shape, extent, volume of the cavity 23 and the orientation of the core layer cells 20 are changed in such a way that the respective core layer cell 20 at the corresponding position can absorb the loads or forces contained there in the load distribution 30 particularly well.

[0044] Subsequently, in the third step 120, the corresponding manufacturing data for automated production are generated from the 3-dimensional model of the core layer 13, which are then transferred to a manufacturing plant 300 for producing the composite component 10.

[0045] Fig. 5 shows an exemplary section of a core layer 13 with several core layer cells 20, which all have different cell properties in the depicted section of the core layer 13. In particular, the shape or geometry of each core layer cell 20 as well as the orientation of the core layer cell 20 are different and optimally adapted to the previously determined load distribution 30 of the component 10. This makes it possible to ensure that the core layer 13 with its core layer cells 20 is optimally adapted to the prevailing loads that occur in the shown section of the core layer 13. It can be seen that in the center, the base area 21 of the respective core layer cells 20 is relatively small compared to the core layer cells 20 at the edge of the section.This means that the core layer cells 20 shown in the middle of the cutout can absorb a higher load than those shown at the edge of the cutout, which allows further weight savings.

[0046] It can also be seen that a supporting wall 24 comprising multiple sections is provided in the lower region of the cutout. The individual sections form parts of the wall 22 of different core layer cells 20, so that each core layer cell 20 touched by this supporting wall 24 is connected to the other core layer cells 20 via this supporting wall 24. In particular, the supporting wall 24 has, at least in part, a homogeneous profile and is optimized so that corresponding loads can be optimally dissipated. One supporting wall 24 thus forms a total of multiple parts of cell walls 22 of different core layer cells 20.

[0047] Fig. 6 shows a manufacturing plant 300 for producing a core layer 13 according to the present invention. The manufacturing plant 300 is first provided with a core layer material 310, which in the embodiment of Fig. 6 is provided in the form of an aluminum roll as a quasi-endless material.

[0048] The core layer material 310 is then rolled out and cut into individual elements 320 using a cutting device 330 and / or a cutting punch 332. In this process, further cuts 340 are made on the cut elements 320, which will later form the corresponding walls of the core layer cells 20. These additional cuts 340 can be used to specifically vary the cell properties of the individual core layer cells 20 of the core layer 13 to be produced, with these additional cuts 340 resulting from the production data and the previously performed optimization of the core layer 13.

[0049] The complexity of the cut elements 320 goes beyond normal cutting, since the individual cells 20 of the core layer 13 must assume individual shapes. Accordingly, the cut 340 of the individual elements 320 must also be more individual. The cutting device 330 and the cutting punch 332 are controlled by means of a control unit 334, wherein the control unit 334 contains the corresponding data for the individual cuts 340. It is conceivable that the control unit 334 also contains an optimization algorithm that calculates the individual cuts 340 based on corresponding boundary conditions or specifications and then controls the cutting device 330 or the cutting punch 332 accordingly. The cutting device 330 or the cutting punch 332 produce variable cuts 340 that are more complex than conventional cuts.

[0050] These individual elements 320 with their cutouts 340 are then arranged one above the other to form an element stack 350. Additional spacers or adhesive joints 360 can be provided between individual layers of the elements 320 to create the specific geometry and shape of the core layer 13. These additional spacers or adhesive joints 360 also result from the manufacturing data of the previously performed optimization of the core layer 13. After the element stack 350 has been completely manufactured, the element stack 350 can be pulled apart, resulting in the core layer 13. List of reference symbols 10 Composite component 11 first top layer 11a Adhesive layer of the first cover layer 12 second top layer 12a Adhesive layer of the second cover layer 13 core layer 20 nuclear layer cell 21 Base area of ​​the nuclear layer cell 22 Cell wall 23 Cavity 24 retaining wall 30 Load distribution 100 Step 1 110 2nd step 120 Step 3 300 production facilities 310 core layer material 320 cut element 330 cutting device 332 cutting punch 334 Control unit 340 cutting 350 element stacks 360 spacer / adhesive point

Claims

[1] Method for producing a core layer (13) for a composite component (10) manufactured in sandwich construction, the method comprising the following steps: - Providing a core layer material (310) as a quasi-endless material at a manufacturing plant (300); - Rolling out the core layer material (310); - Cutting the core layer material (310) into individual elements (320) using a cutting device (330) and / or a cutting die (332); - Making further cuts (340) to the cut elements (320), which will later form the corresponding walls of the core layer cells; - wherein the additional cuts (340) result from manufacturing data and a previously carried out optimization of the core layer (13) with regard to stability and weight to adapt to the prevailing load conditions in order to specifically vary cell properties of the individual core layer cells; - Arranging the cut elements (320) with their cutouts (340) on top of each other to form an element stack (350), with additional spacers or adhesive points (360) being introduced between the individual layers of the elements (320) in order to form the special geometry and shape of the core layer (13); - Pulling apart the fully produced stack of elements (350), resulting in the core layer (13). [2] Method for producing a composite component (10) in sandwich construction, the method comprising the following steps: - Providing at least two flat cover layers (11, 12); - Providing a core layer (13) provided between the cover layers (11, 12), which has a plurality of core layer cells (20), each core layer cell having a base (21) and a cell wall (22) enclosing the base (21) and forming a cavity (23); and - Arranging the cover layers (11, 12) on the core layer (13) so that the core layer is positioned between the cover layers (11, 12) to produce the composite component (10); characterized by , that - a core layer (13) is provided in which at least one cell property is determined in at least one part of the core layer cells (20) depending on a load distribution (30) of the composite component (10) to be produced, so that at least two core layer cells (20) are different from each other with respect to at least one cell property, wherein the core layer (13) is produced according to the method according to claim 1. [3] Method according to claim 2, characterized by, that the core layer (13) is provided such that the at least two core layer cells (20) have different area areas of the base surfaces (21), different base surface shapes of the base surfaces (21) and / or different volumes of the cavities. [4] Method according to one of claims 2 or 3, characterized by , that the core layer (13) is provided in such a way that the at least two core layer cells (20) have an identical base shape of the bases (21), which are, however, oriented differently from each other. [5] Method according to any one of claims 2 to 4, characterized by, that the load distribution (30) has a first area in which the load on the composite component (10) is higher than in a second area different from the first area, wherein the core layer (13) is provided such that the core layer cells (20) in the first area have smaller areas of the base surfaces (21) and / or smaller volumes of the cavities than the core layer cells (20) in the second area. [6] Method according to any one of claims 2 to 5, characterized by , that - first, the load distribution (30) of the composite component (10) to be manufactured is determined in its intended use by means of a computing unit, - a three-dimensional model of the core layer (13) including the core layer cells (20) is created using the computing unit, in which at least one cell property of the core layer cells (20) is determined as a function of the determined load distribution (30), - Manufacturing data is generated based on the three-dimensional model using the computing unit and - by means of a manufacturing plant (300) depending on the generated manufacturing data, the core layer (13) is then automatically produced in order to provide the core layer (13). [7] Method according to claim 6, characterized by , that the course of at least one supporting wall (24), which has a first section that forms part of the wall of a first core layer cell (20), and a second section different from the first section that forms part of the wall of a second core layer cell (20), is determined as a cell property depending on the determined load distribution (30). [8] Composite component (10) manufactured in sandwich construction with at least two outer, planar cover layers (11, 12) and an intermediate core layer (13) which has a plurality of core layer cells (20), wherein each core layer cell has a base surface (21) and a cell wall (22) enclosing the base surface (21) and forming a cavity (23), characterized by , that at least two core layer cells (20) of the core layer (13), each of which is completely enclosed by other core layer cells (20), are different from each other with respect to at least one cell property, and that the core layer is produced according to the method of claim 1. [9] Composite component (10) according to claim 8, characterized by , that the at least two core layer cells (20) have different area areas of the base (21). [10] Composite component (10) according to claim 8 or 9, characterized by, that the at least two core layer cells (20) have different base surface shapes of the base surfaces (21). [11] Composite component (10) according to any one of the preceding claims 8 to 10, characterized by , that the at least two nuclear layer cells (20) have different volumes of cavities. [12] Composite component (10) according to any one of the preceding claims 8 to 11, characterized by , that the at least two core layer cells (20) have an identical base shape of the bases (21), which are, however, oriented differently from each other. [13] Composite component (10) according to any one of the preceding claims 8 to 12, characterized by , that a supporting wall (24) is provided which has a first section which forms part of the wall of the first core layer cell (20), and a second section different from the first section which forms part of the wall of the second core layer cell (20). [14] Composite component (10) according to any one of the preceding claims 8 to 13, characterized by , that in at least one part of the core layer cells (20) a cell property is selected depending on a load distribution (30) of the composite component (10) to be produced.

Citation Information

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