Ship broadside protection structure based on chiral superstructure

Abstract

The invention discloses a ship broadside protection structure based on a chiral superstructure, which comprises an outer plate, a connecting layer, a chiral structure protection layer and an inner plate which are arranged from outside to inside, and the outer plate and the chiral structure protection layer are bonded through the connecting layer; the chiral structure protection layer comprises a plurality of chiral superstructure cell elements arranged in an array and a filling material, and the filling material is filled in gaps of the chiral structure; the chiral superstructure cell elements are all composed of chiral superstructure cell element wings. By designing the superstructure material with the chiral characteristic and utilizing the unique mechanical property and fluctuation characteristic of the superstructure material, the protection capacity of the ship broadside is remarkably improved, external attacks can be effectively resisted, and the light weight and flexibility of the ship can be kept.

Description

Technical Field

[0001] The present invention belongs to the field of ship protection technology, and in particular relates to a ship side protection structure based on a chiral superstructure. Background Art

[0002] As the marine environment becomes more complex, the threats faced by ships are increasing, especially in the side area, which is vulnerable to various forms of threats such as underwater explosions and attacks. Traditional ship protection structures are mostly made of heavy metal materials. Although they can provide a certain degree of protection, they also increase the weight of the ship, affecting its maneuverability and speed. Therefore, there is an urgent need for a new type of protection structure that can effectively resist external attacks while maintaining the lightness and flexibility of the ship. Summary of the invention

[0003] The purpose of the present invention is to provide a ship side protection structure based on a chiral superstructure, which utilizes the unique mechanical properties and wave characteristics of the chiral superstructure, has the advantages of light weight, good energy absorption and resistance to continuous impact, and improves the protection capability of the ship side.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A chiral superstructure cell wing, the chiral superstructure cell wing is formed by stacking top-view plane figures, the top-view plane figure is a closed figure composed of a rectangle and a concave figure, the concave figure is composed of a first side t, a third arc r3, a second arc r2, a third side, a first arc r1, a fourth arc r4, and a second side connected end to end in sequence, wherein the first side l1 is in contact with the short side of one side of the rectangle, one end of the second side is connected to the long side of the same side of the rectangle, the first arc r1 and the second arc r2 have the same center O1, the third arc and the fourth arc have the same center O, and the center O1 and the center O are respectively located on both sides of the concave figure.

[0006] The length of the short side of the rectangle t, the length of the long side of the rectangle l1, and the radius r4 of the fourth arc satisfy: r4=l1+t;

[0007] The length of the short side t of the rectangle, the length of the long side l1 of the rectangle, and the radius r3 of the third arc satisfy:

[0008]

[0009] The center angles of the third arc r3 and the fourth arc r4 are 25 to 45 degrees, the center angles of the first arc r1 and the second arc r2 are 90 degrees, and r4-r3=r2-r1;

[0010] The length t of the short side of the rectangle is the thickness of the cell wing of the chiral superstructure;

[0011] The length d of the cell wing of the chiral superstructure is d=r3+r2, r4=l1+t.

[0013] Furthermore, the chiral superstructure cell wing is rotated 45 degrees around point O and replicated three times to obtain a chiral superstructure cell, and the chiral superstructure cell is in a cross shape; the side length C of the chiral superstructure cell is, Where C is the side length of the chiral superstructure cell.

[0014] Furthermore, the chiral superstructure cells are arranged in a symmetrical array to form a chiral structure protective layer, and fillers are filled in the gaps; the symmetrical array is a plurality of rows, and every two adjacent chiral superstructure cell structures are symmetrical structures, and the chiral superstructure cells in each alternate row are in a parallel relationship; the adjacent chiral superstructure cells are connected to each other through the third side of the chiral superstructure cell wing.

[0015] Furthermore, the ship side protection structure of the chiral superstructure is provided with an outer plate, a connecting layer, a chiral structure protection layer and an inner plate from the outside to the inside, and the outer plate and the chiral structure protection layer are bonded by the connecting layer.

[0016] Furthermore, the wing is made of carbon fiber 3D printing.

[0017] Furthermore, the filler is polyurethane foam, and the density is less than 1g / cm3.

[0018] The beneficial effects of the present invention are:

[0019] 1. The protection effect is significantly improved: by introducing chiral superstructure and multi-layer design, external shock waves are effectively dispersed and absorbed, improving the protection capability of the ship's side.

[0020] 2. Weight reduction: Use high-strength, lightweight composite materials to reduce the overall weight of the ship and improve maneuverability.

[0021] 3. Strong adaptability: The design of the chiral superstructure enables the present invention to adapt to impacts of different directions and intensities and provide all-round protection; at the same time, by adjusting the parameters of the chiral superstructure, customized designs can be carried out for different threats to improve the adaptability of the protective structure.

[0022] 4. Easy to maintain and repair: Due to the modular design, each layer is relatively independent, so when it is damaged, it can be easily replaced or repaired locally, reducing maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the overall schematic diagram of the ship side protection structure based on the chiral superstructure;

[0024] Figure 2This is a front view of the ship side protection structure based on the chiral superstructure;

[0025] Figure 3 Schematic diagram of chiral superstructure cell and chiral superstructure cell wing structure;

[0026] Figure 4 Schematic diagram of the relationship between the cell wing parameters of the chiral superstructure. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1 As shown, in this embodiment, a chiral superstructure ship side protection structure is provided, which is provided with an outer plate 1, a connecting layer 2, a chiral structure protection layer 3 and an inner plate 4 from the outside to the inside, and the outer plate 1 and the chiral structure protection layer 3 are bonded by the connecting layer 2; the chiral structure protection layer 3 includes a plurality of chiral superstructure cells 31 arranged in an array and a filler, and the filler is filled in the gaps of the chiral structure; the chiral superstructure cells 31 are all composed of chiral superstructure cell wings 311.

[0029] like Figure 2 As shown, the chiral structure protective layer 3 is composed of Figure 3 The chiral superstructure cells 31 shown are formed by a symmetrical array. The symmetrical array of the chiral superstructure cells 31 is divided into multiple rows, and every two adjacent unit cell structures are symmetrical structures.

[0030] Specifically: each row is composed of four chiral superstructure cells in a symmetrical array, all chiral superstructure cells in the first row are symmetrical with all chiral superstructure cells in the second row, and similarly, all chiral superstructure cells in the second row are symmetrical with all chiral superstructure cells in the third row, therefore, the chiral superstructure cells in the first and third rows are in parallel, and the chiral superstructure cells in the second and fourth rows are in parallel. The number of chiral superstructure cells in each row in the attached drawings is four, which only serves to briefly explain and is not restrictive, and can be changed according to actual usage.

[0031] like Figure 3 and 4 As shown, the chiral superstructure cell wing structure uses the center points of the two arcs to draw two arcs (inner arcs r1, r3 and outer arcs r2, r4) in a clockwise and counterclockwise direction respectively, and then the two arcs overlap on the line segment connecting the two centers to form a concave structure, and then are connected to the arcs through the short side length l1 and the long side length l2 to form a chiral superstructure cell wing structure with both chirality and concave properties. Finally, the chiral superstructure cell wing is rotated 45° around point O, replicated 3 times and spliced ​​to obtain a chiral superstructure cell 31.

[0032] like Figure 3As shown, the chiral superstructure cell wing 311 is formed by stacking top-view plane figures, and the top-view plane figure is a closed figure composed of a rectangle and a concave figure, and the concave figure is composed of a first side t, a third arc r3, a second arc r2, a third side, a first arc r1, a fourth arc r4, and a second side connected end to end in sequence, wherein the first side l1 is in contact with the short side of one side of the rectangle, one end of the second side is connected to the long side of the same side of the rectangle, the first arc r1 and the second arc r2 have the same center O1, the third arc and the fourth arc have the same center O, and the center O1 and the center O are respectively located on both sides of the concave figure.

[0033] The deflection angle of the chiral superstructure cell wing 311 is defined as α, and the deflection angle of the chiral superstructure cell wing 311 can vary from 25 degrees to 45 degrees;

[0034] The length of the short side of the rectangle t, the length of the long side of the rectangle l1, and the radius r4 of the fourth arc satisfy: r4=l1+t;

[0035] The length of the short side t of the rectangle, the length of the long side l1 of the rectangle, and the radius r3 of the third arc satisfy:

[0036]

[0037] The center angles of the third arc r3 and the fourth arc r4 are 25 to 45 degrees, the center angles of the first arc r1 and the second arc r2 are 90 degrees, and r4-r3=r2-r1;

[0038] The length t of the short side of the rectangle is the thickness of the chiral superstructure cell wing 311;

[0039] The length d of the chiral superstructure cell wing 311 is d=r3+r2, r4=l1+t.

[0041] The chiral superstructure cell wing 311 is rotated 45 degrees around point O and replicated three times to obtain a chiral superstructure cell 31. The chiral superstructure cell 331 is in the shape of a cross. The side length C of the chiral superstructure cell 31 is, Where C is the side length of the chiral superstructure cell 31.

[0042] Specifically, the size of the chiral superstructure cell structure is 64mm×64mm, the overall shape of the cell structure is square, the thickness of the chiral cell wing is 0<t≤8mm, and the length of the outer arc radius of the chiral cell wing is 0<r2≤6mm.

[0043] The principle of the negative Poisson's ratio effect presented by the chiral superstructure cell is that the rotation of the wing around the center point during the stretching process drives the rod connected to it to produce rotational contraction, and squeezes the concave structure to make it continue to expand and contract, and the contraction of the cell spreads to the overall structure, so that the overall structure produces a macroscopic contraction effect under the action of static stretching; different from the traditional chiral superstructure, the present invention creatively combines the chirality and concave structures into a new chiral structure, produces a negative Poisson's ratio effect, and has the characteristics of symmetry, light weight, and impact resistance.

[0044] In this embodiment, the filler at the gap of the chiral structure is preferably a low-density polyurethane foam, and the density of the buffer filler is less than 1g / cm3. When subjected to external impact or explosion, the low-density buffer filler exhibits a higher overall density state after being compressed, thereby enhancing the anti-explosion and anti-impact effects, and because the buffer filler has a lower density, the total weight of the overall structure is significantly reduced; the chiral superstructure cell wing is made of carbon fiber 3D printing, which can not only greatly improve the structural impact resistance, but also reduce the occupied space of the structure, improve the overall structural space utilization, and the overall weight is light, low cost, easy to manufacture, and suitable for large-scale application; the connecting layer is a high-hardness ceramic material, and the connecting layer is bonded to the outer plate and the chiral structure protective layer by an adhesive material, and the adhesive material is an epoxy resin. By introducing the chiral superstructure and multi-layer design, the external shock wave is effectively dispersed and absorbed, and the protection capability of the ship's side is improved.

[0045] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chiral superstructure cell wing, characterized in that: The chiral superstructure cell wing (311) is formed by stacking a top-view plane figure, which is a closed figure composed of a rectangle and a concave figure. The concave figure is composed of a first side t, a third arc r3, a second arc r2, a third side, a first arc r1, a fourth arc r4, and a second side connected end to end in sequence, wherein the first side l1 is in contact with a short side of one side of the rectangle, one end of the second side is connected to a long side of the same side of the rectangle, the first arc r1 and the second arc r2 have the same center O1, the third arc and the fourth arc have the same center O, and the center O1 and the center O are respectively located on both sides of the concave figure.

2. A chiral superstructure cell wing according to claim 1, characterized in that: The length of the short side of the rectangle t, the length of the long side of the rectangle l1, and the radius r4 of the fourth arc satisfy: r4=l1+t; The length of the short side t of the rectangle, the length of the long side l1 of the rectangle, and the radius r3 of the third arc satisfy: The center angles of the third arc r3 and the fourth arc r4 are 25 to 45 degrees, the center angles of the first arc r1 and the second arc r2 are 90 degrees, and r4-r3=r2-r1; The length t of the short side of the rectangle is the thickness of the chiral superstructure cell wing (311); The length d of the chiral superstructure cell wing (311) is d=r3+r2, r4=l1+t.

3. The chiral superstructure cell composed of a chiral superstructure cell wing according to claim 2, characterized in that: The chiral superstructure cell wing (311) is rotated 45 degrees around point O and replicated three times to obtain a chiral superstructure cell (31). The chiral superstructure cell (31) is in the shape of a cross. The side length C of the chiral superstructure cell (31) is, Where C is the side length of the chiral superstructure cell (31).

4. The chiral structure protective layer composed of chiral superstructure cells according to claim 3, characterized in that: The chiral superstructure cells (31) are arranged in a symmetrical array to form a chiral structure protection layer (3), and a filler is filled in the gaps; the symmetrical array is a plurality of rows, and the structures of every two adjacent chiral superstructure cells (31) are symmetrical structures, and the chiral superstructure cells (31) in each alternate row are in a parallel relationship; and the adjacent chiral superstructure cells (31) are connected to each other via the third sides of the chiral superstructure cell wings (311).

5. The ship side protection structure of the chiral superstructure composed of the chiral structural protective layer according to claim 4, characterized in that: The chiral superstructure ship side protection structure comprises, from the outside to the inside, an outer plate (1), a connecting layer (2), a chiral structure protection layer (3) and an inner plate (4), wherein the outer plate (1) and the chiral structure protection layer (3) are bonded together via the connecting layer (2).

6. The chiral superstructure cell wing according to claim 2, characterized in that: The wing (311) is made by 3D printing of carbon fiber.

7. The chiral structure protective layer according to claim 4, characterized in that: The filler is polyurethane foam, and the density is less than 1g / cm3.

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