Design method of reinforcement of fiber composite shell

A technology of fiber composite materials and design methods, applied in pattern design devices, fabrics, textiles, etc., can solve problems such as difficult operation, achieve good overall performance, excellent fatigue resistance, and short weaving cycle

Active Publication Date: 2020-11-10
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, pattern-based weaving is often used to ensure the profiling accuracy of fabrics, but this method is difficult to operate. Some literatures in the existing weaving methods mention the profiling of fabrics, but the use of planar weaving fiber composite shell reinforcement The design of the body and its forming method are rarely mentioned

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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  • Design method of reinforcement of fiber composite shell
  • Design method of reinforcement of fiber composite shell
  • Design method of reinforcement of fiber composite shell

Examples

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Embodiment 1

[0059] This embodiment is a regular shell reinforcement fabric, and its shape is as follows figure 1 As shown, the overall thickness is 4mm, as Figure 6 The thickness shown is the same, the diameter of the big end of the fabric is 200mm, the height is 500mm, the warp yarn is 66tex×1 strand of quartz glass fiber, the weft yarn is 66tex×1 strand of quartz glass fiber, the warp density is 16 threads / cm, and the weft density is 12 threads / cm cm for weaving. The design method is as follows: firstly, the overall thickness of the fabric is 4 mm, and the fiber composite shell reinforcement has low performance requirements between layers, so the total thickness is decomposed into 20 unit cone sleeves with a thickness of 0.2 mm; secondly, the fabric is The regular shell is designed by the two-piece method; the section is a regular circle, and the perimeter corresponding to different station heights is calculated by mathematical methods, and 1 / 4 of the perimeter is taken as the width o...

Embodiment 2

[0064] This embodiment is a regular shell reinforcement fabric, and its shape is as follows figure 1 As shown, the maximum overall thickness is 5mm, the minimum is 4mm, the thickness from the top of the shell to the bottom is 400mm, the thickness is 4mm, and the thickness is gradually thickened from the position of 400mm to the top. 5mm, bottom 50mm length and thickness 5mm unchanged, the diameter of the big end of the fabric is 200mm, the height is 500mm, the warp yarn is 66tex×1 strand of quartz glass fiber, the weft yarn is 66tex×1 strand of quartz glass fiber, the warp density is 16 threads / cm, The weft density is 12 threads / cm for weaving. The design method is as follows: firstly, the maximum thickness of the fabric is 5mm, and the minimum thickness is 4mm. According to the minimum thickness, it is decomposed into 20 unit cone sleeves with a thickness of 0.2mm, and the maximum thickness is decomposed into 20 unit cone sleeves with a thickness of 0.2mm and 5 A truncated c...

Embodiment 3

[0066] This embodiment is a regular shell reinforcement fabric, and its shape is as follows figure 1 As shown, the maximum overall thickness is 5mm, the minimum is 4mm, the thickness of 4mm remains unchanged from the top of the shell to the bottom of 400mm, and the thickness gradually becomes thicker from the position of 400mm to the bottom, and the thickness range is 50mm. 5mm forms a variable thickness interval, the bottom is 50mm long and the thickness is 5mm unchanged. The diameter of the big end of the fabric is 200mm and the height is 500mm. The warp yarn is 66tex×1 strand of quartz glass fiber, the weft yarn is 66tex×1 strand and 66tex×2 strand of quartz Glass fiber is woven with a warp density of 16 threads / cm and a weft density of 12 threads / cm. The design method is as follows: firstly, the maximum thickness of the fabric is 5mm, the minimum thickness is 4mm, according to the minimum thickness, it is decomposed into 20 unit cone sleeves with a thickness of 0.2mm, and ...

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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Abstract

A design method of a reinforcement of a fiber composite shell comprises the following steps that 1, the reinforcement of the fiber composite shell is decomposed into fabrics of n unit sleeves in the thickness direction, the thicknesses of the n unit sleeves are d1, d2... dn respectively, and the total thickness D of the reinforcement of the fiber composite shell is equal to the sum of d1, d2... dn; 2, the fabrics of the n unit sleeves are respectively woven; and 3, the fabrics of the n unit sleeves are unfolded, and sleeve film superposition is carried out to obtain the reinforcement of the fiber composite shell. The method is short in weaving period, low in cost, easy to operate, high in efficiency and high in adaptability and facilitates practical application; the prepared reinforcementfabrics have the characteristics of proper formability, good bulkiness and the like; and the fabrics designed through the method is high in profiling precision, the appearance characteristic requirement of the fabrics can be met, and the corresponding fabrics are excellent in mechanical property and good in overall performance.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a reinforcement design method for a fiber composite shell. Background technique [0002] Fiber composite shell reinforcements have a large number of applications in production and life, such as fiber reinforced composite antennas, aircraft radome and umbrellas. The method of weaving fiber-reinforced composite material antenna is to use honeycomb sandwich structure. The manufacturing process of honeycomb sandwich structure is complex and irreversible, which has very strict requirements on the manufacturing process, and weaving is difficult; The strip is wound on the mandrel according to certain rules, and then cured and demoulded to obtain the finished product. However, the fiber winding rule design and tension control of this method are complicated, and the formed composite product has a large difference in strength along the longitudinal and transverse directions o...

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): D03C19/00D03D3/06D03D3/08D03D3/04D03D11/00D03D11/02D03D1/00
CPCD03C19/00D03D1/00D03D3/04D03D3/06D03D3/08D03D11/00D03D11/02
Inventor 赵谦赵敬胡方田李小欢李丹丹房坤鹏朱梦蝶
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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