Composite material platform floor with netty three-dimensional whole multidirectional linking and weaving structure and preparation method of the composite material platform floor

A technology for car floor and composite material, applied in braid, fabric, textile and other directions, can solve the problems of poor bending resistance, torsion resistance and impact resistance, low in-plane shear performance, and increased fiber volume content.

Active Publication Date: 2013-02-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the in-plane mechanical properties of the three-dimensional six-way and three-dimensional seven-way braided composites have been improved, the increase in the fiber volume content in the in-plane direction is limited due to the limited number of weft yarns added, so the improvement of the in-plane mechanical properties is limited. ; In addition, because the horizontal weft yarn and the longitudinal weft yarn are only evenly sandwiched between the weaving yarns, neither of which participates in weaving, the in-plane shear performance is low, and the bending resistance, torsion resistance and impact resistance are also poor; The in-plane shear resistance, bending resistance, torsion resistance, impact resistance and other properties of the woven structure composite material are further improved to meet the special needs of high-speed trains and other fields for material properties

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
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  • Composite material platform floor with netty three-dimensional whole multidirectional linking and weaving structure and preparation method of the composite material platform floor
  • Composite material platform floor with netty three-dimensional whole multidirectional linking and weaving structure and preparation method of the composite material platform floor
  • Composite material platform floor with netty three-dimensional whole multidirectional linking and weaving structure and preparation method of the composite material platform floor

Examples

Experimental program
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Effect test

Embodiment 1

[0107] The cross-section of the preformed part of the composite material carriage floor is square, and the external dimensions are: 25 meters (length) × 3 meters (width) × 0.03 meters (height).

[0108] 1) Design of preformed parts

[0109] a) determine the yarn raw material;

[0110] The raw material for all yarn systems is yarn bundles composed of glass fibres.

[0111] b) Determine the number of yarn carriers on the chassis of the knitting machine;

[0112] The number of rows of the main body yarn carrier is m=12, the number of columns of the main body yarn carrier is n=90, and the ratio of the braiding yarn system to the shaft yarn system is 1:1, that is, the shaft yarn is fully loaded.

[0113] Number of knitting yarn carriers: 12 rows x 900 columns = 10800

[0114] Number of shaft yarn carriers: 12 rows x 900 columns = 10800

[0115] c) Determine braiding angle, fiber volume content, flower node length;

[0116] The braiding angle is 20 degrees, the fiber volume conte...

Embodiment 2

[0162] The cross-section of the preformed part of the composite material compartment floor is square, and the external dimensions are: 25 meters (length) × 3 meters (width) × 0.05 meters (height).

[0163] 1) Design of preformed parts

[0164] a) determine the yarn raw material;

[0165] Weaving yarn system, shaft yarn system, horizontal filling weft system, longitudinal filling weft system, +45 degree filling weft system, -45 degree filling weft system, horizontal interweaving weft system, and longitudinal interweaving weft system all use T300 12k carbon fiber.

[0166] b) Determine the number of yarn carriers on the chassis of the knitting machine;

[0167] The number of rows of the main body yarn carrier is m=20, the number of columns of the main body yarn carrier is n=1000, and the ratio of the braiding yarn system and the shaft yarn system is 1:1, that is: full loading of shaft yarns.

[0168] Number of knitting yarn carriers: 20 rows x 1000 columns = 20000 pieces

[0...

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Abstract

The invention relates to a composite material platform floor with a netty three-dimensional whole multidirectional linking and weaving structure and a preparation method of the composite material platform floor. The platform floor provided by the invention comprises a knitting yarn system, wherein the knitting yarn system is mutually woven by a three-dimensional weaving movement law according to a four-step process. The composite material platform floor is characterized by further comprising seven yarn systems which penetrate through a workpiece along the x direction, the y direction and the z direction, wherein different yarn systems are mutually interlinked and woven according to different weaving laws to form into a compact three-dimensional whole network structure. The preparation method provided by the invention comprises the following steps of: 1) designing a fabricated part; 2) hanging a wire and winding; 3) weaving (comprising 16 weaving steps); 4) forming in a tightening way; and 5) carrying out compound curing. The composite material platform floor provided by the invention is better in globality, the fiber volume content can be obviously increased, the composite material platform floor is better and reasonable in mechanical property, the performance in the composite material platform floor can be obviously increased, and the composite material platform floor is better in multi-functional characteristic. The composite material platform floor is applicable to a locomotive of an aerodynamic aerotrain with stimulated wings and each compartment.

Description

technical field [0001] The invention relates to a composite material carriage floor and its manufacturing method, in particular to a composite material carriage floor with a network-like three-dimensional integral multi-directional interlocking weaving structure and its manufacturing method, and is applied to an aerodynamic suspension train with imitation wings The locomotive and each carriage belong to the field of engineering material preparation. Background technique [0002] Recently, Jiang Lei et al. (Chinese Patent: 201110209112.4, Chinese Patent: 201110242739, Chinese Patent: 201110242755.9) have proposed an aerodynamic suspension train with imitated wings. Imitation of the wing structure. The airflow that moves relative to the train acts on the imitation wing structure to generate a lifting force, thereby reducing the pressure of the train on the rails. Since the carriage part occupies the main weight of the modern aerodynamic suspension train body with imitation w...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D25/00D04C1/06B29C70/10
Inventor 李典森江雷
Owner BEIHANG UNIV
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