Composite I-beam structural slab based on 3D printing

Abstract

The utility model discloses a composite I-shaped beam structural plate based on 3D printing. The composite I-shaped beam structural plate is of a series of rectangular grid structures composed of a plurality of I-shaped beam components, a front-layer surface plate, a rear-layer surface plate, a left-layer surface plate, a right-layer surface plate and rectangular beams. The front and rear surface plates and the left and right surface plates are horizontally arranged in parallel and are mutually connected to form a rectangular frame structure; the I-shaped beams and the rectangular beams are arranged in the rectangular frame structure, the rectangular beams are arranged on the front portion and the rear portion of each row of I-shaped beam component set respectively, the two ends of each rectangular beam are connected with the left surface plate and the right surface plate, the rectangular beams are arranged in four rows, and each I-shaped beam component is connected with the front rectangular beam and the rear rectangular beam of the I-shaped beam component into an integrated structure. The composite I-beam structural slab based on 3D printing provided by the utility model has stronger mechanical properties and can meet the requirements of different working environments. The I-shaped beam structure has various mechanical properties such as excellent impact resistance, wearing resistance, folding resistance and bending performance.

Description

Technical Field

[0001] This utility model relates to the field of 3D printed structural plate technology, and in particular to a composite I-beam structural plate based on 3D printing. Background Technology

[0002] Existing carbon fiber structural panels often suffer from low strength and poor impact resistance, which limits their application in the fields of construction, transportation, and aerospace. Therefore, it is very meaningful to provide a new type of structural panel. Utility Model Content

[0003] In view of this, the present invention provides a composite I-beam structural plate based on 3D printing, which has better mechanical properties than the prior art.

[0004] The technical solution provided by this utility model is specifically a composite I-beam structure plate based on 3D printing, which is a series of rectangular grid structures composed of multiple I-beam components, front and rear surface plates, left and right surface plates, and rectangular beams.

[0005] The front and rear surface plates and the left and right surface plates are arranged horizontally and parallel to each other to form a rectangular frame structure.

[0006] The multiple I-beams and rectangular beams are arranged in the rectangular frame structure. Along the extension direction of the front and rear surface plates, the I-beam members are arranged at equal intervals, and there are a total of three rows of I-beam member groups.

[0007] Along the extension direction of the front and rear surface plates, each row of I-beam components has rectangular beams at the front and rear, and the two ends of the rectangular beams are connected to the left and right surface plates. There are four rows of rectangular beams in total, and each I-beam component is connected to the rectangular beams in front and behind it to form an integral structure.

[0008] Preferably, the I-beam component includes upper and lower flanges and a web connecting the upper and lower flanges, wherein the upper and lower flanges are rectangular structures.

[0009] Preferably, the front and rear surface plates have the same thickness, and the left and right surface plates have the same thickness.

[0010] Preferably, the plurality of I-beam members are all the same size and wall thickness.

[0011] Preferably, the interval between each row of I-beam members is 6mm, and the interval is the distance between the center points of the flanges of two adjacent I-beam members;

[0012] The thickness of the front and rear surface panels is 3mm, and the thickness of the left and right surface panels is 5mm.

[0013] The height of the I-beam member is 5mm, and the web height is 3mm.

[0014] Preferably, the composite I-beam structural plate body adopts a nylon fiber PA-CF composite structure.

[0015] This invention provides a 3D-printed composite I-beam structural plate with strong mechanical properties, capable of meeting the requirements of various working environments. The I-beam structure exhibits excellent impact resistance, puncture resistance, flexural strength, and bending performance, among other mechanical properties.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the disclosure of this utility model. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the overall structure of a composite I-beam structure plate based on 3D printing, provided for an embodiment of this utility model;

[0020] Figure 2 A partial cross-sectional view of a composite I-beam structure plate based on 3D printing, provided for an embodiment of this utility model;

[0021] Figure 3 A cross-sectional plan view of a composite I-beam structure plate based on 3D printing, provided for an embodiment of this utility model;

[0022] Figure 4 Performance test diagram of the composite I-beam structure plate provided in the disclosed embodiment of this utility model. Detailed Implementation

[0023] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses consistent with some aspects of this invention as detailed in the appended claims.

[0024] In order to improve the burst resistance, flexural resistance and puncture resistance of existing honeycomb structure panels, this embodiment proposes a composite I-beam structure panel based on 3D printing, which is a series of rectangular grid structures composed of multiple I-beam components 2, front and rear surface panels 3, left and right surface panels 4, and rectangular beams 5.

[0025] The front and rear surface plates 3 and the left and right surface plates 5 are horizontally parallel and connected to each other to form a rectangular frame structure.

[0026] The plurality of I-beams 2 and rectangular beams 5 are arranged in a rectangular frame structure. Along the extension direction of the front and rear surface plates 3, the I-beam members 2 are arranged at equal intervals, and there are a total of three rows of I-beam member groups.

[0027] Along the extension direction of the front and rear surface plates 3, each row of I-beam components is provided with rectangular beams 5 at the front and rear. The two ends of the rectangular beams 5 are connected to the left and right surface plates 4. There are four rows of rectangular beams 5. Each I-beam component 2 is connected to the rectangular beams 5 in front and behind it to form an integral structure.

[0028] The I-beam member 2 includes upper and lower flanges and a web connecting the upper and lower flanges. The upper and lower flanges are rectangular structures.

[0029] The I-beam structural slab provided in this implementation plan forms a series of continuous rectangular grid structures, which can distribute external forces from the vertical direction, making the I-beam structure much more resistant to compressive forces than any circular or square structure. Moreover, the I-beam structural slab also has advantages such as high specific strength, good impact resistance, vibration reduction, microwave permeability, strong design flexibility, and material saving, and can be widely used in the fields of construction, transportation, and aerospace.

[0030] Preferably, the front and rear surface plates 3 have the same thickness, and the left and right surface plates 4 have the same thickness.

[0031] The size and wall thickness of the multiple I-beam components are all the same.

[0032] The interval between each row of I-beam members 2 is 6mm, and the interval is the distance between the center points of the flanges of two adjacent I-beam members 2;

[0033] The thickness of the front and rear surface panels 3 is 3mm, and the thickness of the left and right surface panels 4 is 5mm.

[0034] The height of I-beam member 2 is 5mm, and the web height is 3mm.

[0035] The structural slab in this implementation plan is composed of a supporting structure - an I-beam component group and four beams. The thickness of the I-beam structure and the shape of the supporting structure can be adjusted according to the actual situation to switch between different load-bearing and deformation magnitudes.

[0036] The composite I-beam structure plate body adopts a nylon fiber PA-CF composite structure, which further improves the aging resistance and durability. The reinforcing fibers in the composite structure can be carbon fiber, glass fiber, etc., and the fibers can be continuous fibers or chopped fibers. The resin matrix of the 3D printed structure can be polyamide (PA12), polylactic acid, ABS engineering plastic, etc.

[0037] The preparation method of the above-mentioned I-beam structural slab includes the following steps:

[0038] (1) Based on the designed structure, prepare a 3D model in STL format using the 3D modeling software UG, design the thickness of the I-beam members, the length of the web, and the 3D printing path, and output the gcode file. The printing path is as follows: Figure 3 As shown;

[0039] (2) Prepare composite material 3D printing consumables (the diameter of the 3D printing consumables is 1.75mm), and input the above gcode file into the FDM industrial-grade FDM 3D printer to print the composite material I-beam plate structure; the 3D printing parameters are: printing nozzle temperature 230-270℃, printing platform temperature 90-100℃, printing layer height 0.125mm, printing infill rate 100%, printing nozzle diameter 1mm, and nozzle moving speed 60mm / s;

[0040] (3) Place carbon fiber reinforced polyamide composite 3D printing consumables on the 3D printer. The carbon fiber is long-filament carbon fiber, accounting for 35% of the 3D printing consumables. Preheat the machine at a preheating temperature of 200℃ for 5 minutes, and prepare the I-beam structure plate to finally obtain the composite material I-beam structure plate.

[0041] The 3D printed product of this embodiment was measured in length, width, and height using vernier calipers, with three measurements taken in each direction: length at three points at different locations at both ends, and width and height at the midpoint of the beam and 10mm from both end faces. The average deviation of the measurement results was 0.46%.

[0042] Weigh the mass m of the competition sample using an electronic balance. Load the sample using a three-point support method until it breaks or deforms. The loading direction is perpendicular to the 200×40 plane, with a span of 160 mm. Record the load-displacement curve of the sample and the maximum load F.

[0043] The measured mechanical parameters are as follows: maximum bending force is 204.36 N, maximum load is 276.4 N, fracture bending stress is 45.74 MPa, bending strength is 47.33 MPa, and maximum deformation at 100 N is 0.43 mm.

[0044] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0045] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A composite I-beam structural plate based on 3D printing, characterized in that, It is a series of rectangular grid structures composed of multiple I-beam components (2), front and rear surface panels (3), left and right surface panels (4), and rectangular beams (5); The front and rear surface panels (3) and the left and right surface panels (4) are horizontally parallel and connected to each other to form a rectangular frame structure; The multiple I-beam members (2) and rectangular beams (5) are arranged in a rectangular frame structure. Along the extension direction of the front and rear surface panels (3), the I-beam members (2) are arranged at equal intervals, and there are a total of three rows of I-beam member groups. Along the extension direction of the front and rear surface plates (3), each row of I-beam components is provided with rectangular beams (5) at the front and rear. The two ends of the rectangular beams (5) are connected to the left and right surface plates (4). There are four rows of rectangular beams (5). Each I-beam component (2) is connected to the rectangular beams (5) in front and behind it to form an integrated structure.

2. The composite I-beam structural plate based on 3D printing according to claim 1, characterized in that, The I-beam component (2) includes upper and lower flanges and a web connecting the upper and lower flanges, wherein the upper and lower flanges are rectangular structures.

3. The composite I-beam structural plate based on 3D printing according to claim 1, characterized in that, The front and rear surface plates (3) have the same thickness, and the left and right surface plates (4) have the same thickness.

4. A composite I-beam structural plate based on 3D printing according to claim 1, characterized in that, The size and wall thickness of the multiple I-beam components are all the same.

5. A composite I-beam structural plate based on 3D printing according to claim 2, characterized in that, The interval between each row of I-beam members (2) is 6mm, and the interval is the distance between the center points of the flanges of two adjacent I-beam members (2); The thickness of the front and rear surface plates (3) is 3mm, and the thickness of the left and right surface plates (4) is 5mm. The height of the I-beam member (2) is 5mm, and the height of the web is 3mm.

6. A composite I-beam structural plate based on 3D printing according to claim 1, characterized in that, The composite I-beam structural plate body adopts a nylon fiber PA-CF composite structure.

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