Triangular-section arc-shaped composite truss and preparation method thereof

A composite material and cross-section technology, which is applied to fuselage frames, space navigation equipment, space navigation equipment, etc., can solve problems such as the inability to form arc-shaped curved composite material truss structures, many overlapping parts of limbs and tubes, and insufficient geometric accuracy. Achieve the effect of good light weight, high rigidity of the overall structure and good bearing capacity

Active Publication Date: 2021-04-30
XIAN KANGBEN MATERIAL
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] D.K.Darooka, D.W.Jensen's book "Advanced space structure concepts and their development" (Collection of Technical apers-AIAA/ASME/ASCE/AHS/ASCStructures, Structural Dynamics and Materials Conference, v1, p562-571, 2001) discloses an Iso The Truss TM structure is continuous through the longitudinal rods, and the helical oblique rods form an equilateral triangle. Conceptually, a linear truss with excellent mechanical properties can be formed, but the configuration is very complicated, and it needs to be wound as a whole. At the same time, it is impossible to form a curved composite truss structure
[0005] Chinese patent document CN101418627A discloses an ultra-lightweight all-composite truss and its preparation method. The composite material includes more than three axial composite rods and a number of circumferential ribs and helical cross ribs. The preparation method sequentially passes through the fixed core Mandrel, windi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Triangular-section arc-shaped composite truss and preparation method thereof
  • Triangular-section arc-shaped composite truss and preparation method thereof
  • Triangular-section arc-shaped composite truss and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041]Example 1

[0042]Such asfigure 1 As shown, the triangular cross-sectional curved composite truss truss, the truss rod 1, the first internal string 2-1, and the second inner string 2-2, the outer string 1, first The inner pole 2-1 and the second inner string 2-2 are connected in the same direction by uniformly disposed triangular cross-sectional belly assembly 3 in the same direction, and the triangular cross-section lever assembly 3 is passed by 3 belly. The three four-way joint 3-1 is connected to two or two, and the stringed rod 1 between the adjacent triangular cross-section levers assemblies 3 is provided with the first outer oblique belly rod. 4-1, and adjacent first outer oblique belly 4-1 interleaved, the stringed rod 1 between the adjacent triangular cross-sectional belly assemblies 3 is provided with the second inner string 2-2 The second outer oblique belly 4-2, and the adjacent second outer oblique lever 4-2 is in reverse, the first inner string rod 2-1 between the ad...

Example Embodiment

[0051]Example 2

[0052]In this example, the prepared rod 1, the preparation method of the circular arc tube, the first internal string 2-1, and the second inner chord rod 2-2 in the triangular cross-sectional curved composite composite truss, in the internal mold of Baolong foam The surface is covered with a soft inner mold, and then the epoxy resin high-strength carbon fiber preproving is flatly layered in a soft inner mold surface to form a prefabricate in the surface of the design, and then the prefabricate is placed under the outer mold cavity. In vivo, fitting and fastening the upper mold, pressurized to 0.8 MPa ~ 1.1 MPa, heat insulation compression is added to fix the mold, and the cooling is released.

[0053]Such asFigure 7As shown, the specific preparation process of the circular arc tube is a cordial rod 1, the first internal string 2-1, and the second inner string 2-2 in the triangular cross-sectional curved composite material truss, first accept the base mold first. Then, th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Areal densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a triangular-section arc-shaped composite truss which is of an arc-shaped three-dimensional structure formed by connecting an outer chord member, a first inner chord member and a second inner chord member which are parallel to one another through a triangular-section web member assembly. A first outer diagonal web member, a second outer diagonal web member and an inner diagonal web member are diagonally arranged on the outer chord member, the first inner chord member and the second inner chord member between the adjacent triangular section web member assemblies respectively and are fixedly connected with the four-way joint, and each member is made of a carbon fiber composite material; the invention further discloses a preparation method of the triangular-section arc-shaped composite material truss. The large-radian composite material truss structure with the curvature is formed by connecting the web member assemblies with the triangular sections, the size precision is high, the loading performance is good, the truss structure achieves ultra-light weight, and modular connection of large composite material pipe trusses is achieved; the self-heating mold is adopted for preparation, curing equipment does not need to enter or exit, the quality stability of the arc rod piece is improved, and the size precision is high.

Description

technical field [0001] The invention belongs to the technical field of composite material structures, and in particular relates to a triangular-section arc-shaped composite material truss and a preparation method thereof. Background technique [0002] The main body of the truss structure is connected by truss members and truss joints. It mainly relies on the coordinated distribution of load force on each member to reduce the weight of the members. Through optimization design, this type of structure can be designed to be tensile-dominated mechanical stress state, the smallest weight index under the same load can be obtained. Carbon fiber composite materials have comprehensive excellent characteristics such as small specific gravity, high specific strength and specific modulus, good moisture resistance, fatigue resistance and wear resistance. The material components replace the metal materials such as aluminum alloy and titanium alloy in the previous truss structure. The deve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B64C1/06B64G1/22B64B1/08B29C70/34
CPCB64C1/061B64G1/22B64B1/08B29C70/345Y02T50/40
Inventor 王增加王希杰李静孔娜师慧陈庄宁蒙川李博
Owner XIAN KANGBEN MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap