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A processing method for a light-weight and high-rigidity composite pressure-resistant shell structure of an underwater vehicle

An underwater vehicle and composite material technology, which is applied to household appliances, ships, other household appliances, etc., can solve the problems of insufficient interlaminar shear strength, large structural shear deformation, easy expansion, etc., to suppress internal cracks and Propagation of damage, reduction of shear stress and shear deformation, effect of reducing structural weight

Active Publication Date: 2021-04-16
NAVAL UNIV OF ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressure-resistant shell structure of the commonly used underwater vehicles mainly has the following problems: the metal pressure-resistant shell is heavy, and the functional design cannot be realized; although the pressure-resistant shell structure of a single high-strength carbon fiber The shell is light in weight, but there are problems of low structural load-bearing efficiency, insufficient interlayer shear strength, and difficult winding process of thick shells; while conventional cylindrical shells made of sandwich composite materials, especially when functional core materials are used and core materials When the thickness is thick, there are often problems of large structural shear deformation, local defects and easy expansion of damage
[0003] Due to the above deficiencies, the performance of underwater vehicles, including environmental adaptability, efficiency, cost and safety, is often difficult to meet the needs of actual use, which limits the promotion and application of underwater vehicles

Method used

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  • A processing method for a light-weight and high-rigidity composite pressure-resistant shell structure of an underwater vehicle
  • A processing method for a light-weight and high-rigidity composite pressure-resistant shell structure of an underwater vehicle
  • A processing method for a light-weight and high-rigidity composite pressure-resistant shell structure of an underwater vehicle

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Embodiment 1

[0029] A light-weight and high-rigidity composite material pressure-resistant shell structure of an underwater vehicle of the present invention includes an outer surface layer and an inner surface layer wound by high-strength carbon fibers, and a composite material reinforcement arranged between the outer surface layer and the inner surface layer The ribs are filled with core material between the ribs; the ribs are arranged in a single hoop or "hoop + axial" or "spiral cross" arrangement; for a single hoop rib, the hoop wet winding method is used for manufacturing ;For "circumferential + axial" or "spiral cross" ribs, vacuum-assisted forming process is used for manufacturing; when the built-in ribs of spiral cross mode are used, the angle between the direction of the rib arrangement and the axis of the cylindrical shell is 45°~60° °; When the "circular + axial" or "spiral cross" arrangement is adopted, the reinforcing ribs cross each other from two directions. When laying, the ...

Embodiment 2

[0043] Such as Figure 5As shown, the internal reinforcing ribs in this example are arranged axially and circumferentially crosswise, the material system and molding process scheme of the surface layer and reinforcing ribs are the same as in Example 1, and the core material is made of lightweight materials (such as foam materials, buoyancy material) to further reduce the weight of the structure, and the core material adopts a casting molding process.

[0044] Composite reinforcement ribs adopt a vertical (or horizontal lay-up) clamping lay-up connection scheme, and adopt an integrated vacuum forming process to form between the inner surface layer and the core material of the pressure-resistant shell, such as Figure 6 shown.

Embodiment 3

[0046] Such as Figure 7 As shown, the internal reinforcing ribs in this example adopt a single circumferential arrangement, and the material system of the surface layer, core material and reinforcing ribs can be the same as in Example 2, and the same function can be achieved. At the same time, the reinforcing ribs in this scheme can be It is directly manufactured by hoop wet winding, which is more convenient for engineering manufacture than Example 1 and Example 2.

[0047] The middle core material adopts the method of oblique lap surface, and the lap angle is 20°~90° for strong connection through high-strength epoxy glue, such as Figure 8 shown.

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Abstract

The invention relates to the field of underwater vehicles, in particular to a processing method for a light-weight and high-rigidity composite material pressure-resistant shell structure. It includes an outer layer and an inner layer wound by high-strength carbon fibers, and a composite material reinforcing rib arranged between the outer layer and the inner surface layer, and a core material is filled between the reinforcing ribs; the light-weight and high-rigidity composite material in the present invention The pressure-resistant shell structure can greatly reduce the shear stress and shear deformation of the core material; compared with the conventional sandwich cylindrical shell structure, it can increase the structural instability load by more than 30%; it can significantly reduce the impact of local damage on the structural strength impact, and can rely on the built-in ribs to effectively suppress the expansion of internal cracks and damage; at the same time, it can reduce the structural weight, improve the endurance of underwater vehicles, and realize the functional design of sound absorption, non-magnetic, vibration reduction, etc., to achieve structural load bearing The design goal of integration with function.

Description

technical field [0001] The invention relates to the field of underwater vehicles, in particular to a method for processing a light-weight and high-rigidity composite material pressure-resistant shell structure of an underwater vehicle. Background technique [0002] The pressure-resistant shell is an important part of the underwater vehicle, which mainly plays the role of withstanding the external deep-sea hydrostatic pressure and providing a watertight space for the internal equipment system or personnel. At present, the common underwater vehicle pressure shells are mainly made of metal materials, such as high-strength steel, titanium alloy, aluminum alloy, etc. At the same time, there are also a large number of composite material pressure shells, but mainly use a single high-strength carbon fiber Wound composite pressure hull or single conventional sandwich composite cylindrical shell construction. The pressure-resistant shell structure of the commonly used underwater vehi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B3/13B29D99/00
Inventor 李华东陈国涛朱荣鑫周振龙高海昌
Owner NAVAL UNIV OF ENG PLA
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