A composite material/metal trapezoidal tooth hybrid connection structure and its preparation method

A composite material and hybrid connection technology, which is applied in the field of connection between composite materials and metals, can solve the problems of numerical singularity and insufficient connection strength, and achieve the effects of stress concentration relief, accurate results, and gentle connection shear load.

Active Publication Date: 2016-08-24
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] Based on the above many problems in the application of flat-panel framing, the present invention proposes a composite metal adhesive connection of trapezoidal tooth interface and its preparation method to solve the problems of insufficient connection strength and singular values ​​in simple flat-panel lap joints, in order to Promote the application of composite materials and metal adhesive connections in a wider range of fields

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  • A composite material/metal trapezoidal tooth hybrid connection structure and its preparation method
  • A composite material/metal trapezoidal tooth hybrid connection structure and its preparation method
  • A composite material/metal trapezoidal tooth hybrid connection structure and its preparation method

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[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0052] Such as Figure 7-10 , Shown in 12~13, composite material / metal trapezoidal tooth hybrid connection structure of the present invention, by composite material piece 1, metal piece 2 through bonding agent layer 3 bonding and use bolt fastener in the middle parallel section of trapezoidal tooth 27 are connected as a whole to realize the connection of the composite material part and the metal part.

[0053] Such as Figure 4 As shown, the composite material part 1 is composed of a connecting part 4 and a distal part 5. The connecting part 4 has a glued surface 6, which is connected to the metal part 2 through an adhesive layer 3; the distal part 5 can be terminated on the outer side as required 7 extend outward. The glued surface 6 of the connecti...

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Abstract

The invention discloses a composite material / metal trapezoidal tooth mixing and connecting structure and a preparation method thereof. A machine tooling method is used for constructing the trapezoidal tooth pattern of a metal piece glued binding surface, a die is used for pressing and shaping composite material pieces with trapezoidal teeth, binding agents are poured on and cover the surfaces of the trapezoidal teeth so as to realize the binding of the composite materials and metal, then, tapping in the middle part of the binding surface is performed, and a bolt is used for fixation, so that the mixing and connecting of binding and the bolt is realized. Compared with a traditional flat overlapping glued binding or bolt connection method, the connecting manner is small in stress concentration at the free end bonded, is high in connection strength, is lower in peeling stress in a normal direction, and the connecting structure is particularly suitable for the connection of large-scale composite material structural pieces with high bearing requirements.

Description

technical field [0001] The invention relates to the connection of composite materials and metals, in particular to a hybrid connection structure of adhesive bonding and mechanical connection between composite materials and metals, and belongs to the field of composite material connection methods and technologies. Background technique [0002] Polymer-based composite materials have strong designability due to the integrated molding of materials, processes, and structures. This one-time molding and the multi-phase and multi-component characteristics of the structure itself make the connection of composite materials a weak link in the structure. Traditional Although the mechanical connection has superior connection strength, it is difficult to achieve for thin-walled components and there are corrosion problems; for very thick laminates, it is limited to the composite material matrix and interlaminar shear mechanical properties, and the bonding strength is difficult to achieve. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B11/00F16B5/02F16B7/18
CPCF16B5/02F16B11/006
Inventor 秦志文陈啸杨科徐宇荣晓敏
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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