Large triangular composite material pipe truss modular connecting joint

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: 2020-01-10
SHANGHAI JIAO TONG 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 a

Method used

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  • Large triangular composite material pipe truss modular connecting joint
  • Large triangular composite material pipe truss modular connecting joint
  • Large triangular composite material pipe truss modular connecting joint

Examples

Experimental program
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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 triangular composite material pipe truss modular connecting joint, and relates to the technical field of composite pipe truss structures. The large triangular compositematerial pipe truss modular connecting joint comprises a triangular connector, a pipe end joints A, pipe end joints B, pipe end joints C and a bolt pair. The triangular connector comprises rods, three kinds of corner joint plates and nested parts. Three kinds of pipe end joints are arranged, one pipe end joint comprises a chord member pipe connecting sleeve and a connecting flange, and a web member pipe connecting sleeve and two web member pipe connecting sleeves are added to the other two end pipe joints correspondingly. The middle sections of the rods are rhombic sections, and the two endsof each rod transitionally become flat rectangles from rhombuses. High-performance CFRP multi-layer composite thin-wall pipes serve as shells of the rods, and PMI filling materials are arranged in therods. The rods are formed at a time. The large triangular composite material pipe truss modular connecting joint has the advantages of being low in mass, high in strength, large in rigidity, designable in performance and process, simple and reliable in connection, stable in rod, large in bearing capacity and in geometric tolerance requirement, integrally formed and the like.

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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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 JIAO TONG UNIV
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