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A Method for Optimal Fabrication of Composite Corrugated Beams

A technology of composite materials and corrugated beams, which is applied in the fields of instruments, calculations, electrical digital data processing, etc., can solve problems such as inability to comprehensively compare similar projects, achieve the effects of reducing design/manufacturing cycles, reducing production costs, and improving efficiency

Active Publication Date: 2019-05-21
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Corrugated beams are currently used in both C17 and F22. There is no report on the application of such large-scale RTM corrugated beams in China. Therefore, it is still impossible to make a comprehensive comparison with similar projects. metal parts for comparison

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  • A Method for Optimal Fabrication of Composite Corrugated Beams
  • A Method for Optimal Fabrication of Composite Corrugated Beams

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Embodiment Construction

[0017] The following specific embodiments of the present invention will be further described in detail. The present invention provides a method for optimizing the manufacture of composite corrugated beams, which specifically includes the following steps:

[0018] A. According to the aerodynamic load and the mechanical properties of composite materials, carry out engineering calculation or finite element calculation and analysis on the beam structure, and preliminarily determine the loading condition of the beam. The present invention uses the finite element analysis software MSC.NASTRAN for analysis and calculation.

[0019] B. Carry out preliminary thickness division of the beam according to the loading condition of the beam, and lay out the composite material layup.

[0020] C. Optimize the calculation of the layer angle and sequence of composite materials in each thickness zone, so that it can achieve the lightest weight under the condition of meeting the load-bearing requi...

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Abstract

The invention discloses a method for optimally manufacturing a waved beam of a composite material. The method comprises the following steps: A, carrying out engineering calculation or finite element calculation analysis on a beam structure according to pneumatic load and the loading condition of the beam so as to preliminarily determine the loading condition of the beam; B, carrying out preliminary thickness partition on the beam according to the loading condition of the beam, and designing a composite material paving layer; C, optimally calculating the paving angle and sequence of the composite material in each thickness partition so as to ensure that the weight is the lightest when a bearing requirement is satisfied; D, designing a three-dimensional structure digifax of the beam by using a VATIA software CPD module; E, designing and manufacturing an RTM process module; and F, manufacturing an RTM waved beam. By using the method disclosed in the invention, the design / process coordination efficiency can be greatly improved, the product design / manufacture period can be shortened, the structural weight of the beam is lightened, the bearing ability of the beam is improved and the production cost is reduced.

Description

technical field [0001] The invention belongs to aircraft composite material structure design, in particular to a method for optimizing and manufacturing composite material corrugated beams. Background technique [0002] Aircraft wing spar structures are traditionally made of metal materials. Due to the designability of material properties, composite material beam structures have a great weight advantage compared with metal beams under the same load. [0003] Compared with the corrugated beams manufactured by the traditional autoclave process, the composite corrugated beams manufactured by the advanced RTM process have good net shape dimensions of parts, high product precision, no secondary processing, high qualified rate of finished products, small equipment footprint, and low production costs. Low. [0004] Corrugated beams are currently used in both C17 and F22. There is no report on the application of such large-scale RTM corrugated beams in China. Therefore, it is still...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 刘豫宋艳华田鼎刘凤楠
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA