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A large-scale triangular composite tube truss modular connection node

A technology for composite material tubes and connecting nodes, which is applied to the connection of rods, connecting components, fuselage frames, etc., can solve the problems of complex configuration, difficult manufacture, and small force, and achieve reasonable structural force and force transmission. Easy installation and integration, large bearing capacity

Active Publication Date: 2021-05-11
SHANGHAI JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, those skilled in the art are committed to developing a large-scale triangular composite material pipe truss modular connection node, which is simple in manufacture, reasonable in structural force and force transmission, light in weight, easy to install and integrate, simple and reliable in connection, and solves the problem of existing composite materials. Most of the truss connections require aluminum alloy structure connection, complex configuration, difficult manufacture, heavy weight, small stress and other problems

Method used

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  • A large-scale triangular composite tube truss modular connection node
  • A large-scale triangular composite tube truss modular connection node
  • A large-scale triangular composite tube truss modular connection node

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Experimental program
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Effect test

Embodiment

[0041] Pipe end node A2: the connecting sleeve 201 of the chord pipe is T700S, layup [±45° / 0° / 0° / 0°]3, connection flange G202, connection flange H 302 and connection flange J402 are all 2.0 thick, connection bolt pair 5 is M5, corner joints Plate D102, corner gusset E103 and corner gusset F104 are all 3.0 thick, T700S, layup [±45° / 0° / 0° / 0°]6.0.5 thickness (T700S, layup [±45° / 0° / 0° / 0°]) The connecting flange and the connecting sleeve of the chord tube are solidified once and formed, and the connecting flange with a thickness of 1.5 (15 layers of twill) is formed by secondary bonding.

[0042] Pipe end node B3 and pipe end node C4:

[0043] The chord tube connection sleeve 301 and the chord tube connection sleeve 401 are T700S, layer [±45° / 0° / 0° / 0°] 3, web pipe connection sleeve 303, web pipe connection sleeve 403 and web pipe connection sleeve 404 are all T700S, ply[±45° / 0° / 0° / 0° / 0°]2, connecting flange 20102 is 2.0, connecting bolt pair 3 is M5, corner gusset plate 1020...

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Abstract

The invention discloses a large-scale triangular composite material pipe truss modular connection node, which relates to the technical field of composite material pipe truss structures, including a triangular connection body, a pipe end node A, a pipe end node B, a pipe end node C and a bolt pair; The connecting body includes rods, three kinds of corner gussets and nesting pieces; there are three kinds of pipe end nodes, one includes chord tube connecting sleeve and connecting flange; the other two are one or two more webs The tube is connected to the sleeve; the middle section of the rod is a rhombus cross-section, and the two ends are diamond-shaped and transitions to a flat rectangle; the outer shell of the rod is a thin-walled tube of high-performance CFRP multilayer composite material, and the inside of the rod is filled with PMI material; the rod is formed at one time. The invention can realize the modular connection of large triangular composite material pipe trusses, and has the advantages of light weight, high strength, high rigidity, designability of performance and process, integrated forming, simple and reliable connection, stable rods, large bearing capacity, and geometric tolerance Low merits are required.

Description

technical field [0001] The invention relates to the technical field of composite material pipe truss structures, in particular to a modular connection node of a large triangular composite material pipe truss. Background technique [0002] Composite truss structures have the advantages of light weight, high rigidity, vibration resistance and fatigue resistance, and are widely used in aerospace and other modern industrial equipment fields. Thin-walled circular tube (CHS), thin-walled rectangular tube (RHS) or square tube (SHS) are the most commonly used composite material tube structures with high structural efficiency and the most mature materials and structural processes. Triangular trusses and quadrilateral trusses are the most basic three-dimensional space composite material structures. Triangular trusses have fewer members, light weight, and high rigidity. The modular system can be expanded to realize large-scale composite material structures. This is an effective way to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B7/18F16B7/00B64C1/06B64G1/22
CPCB64C1/065B64G1/22F16B7/00F16B7/18
Inventor 陈务军李世平徐建东杨钧
Owner SHANGHAI JIAOTONG UNIV
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