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Method and device for testing shearing performance parameters of fabric

A test method and fabric technology, applied in the direction of measuring device, testing material strength by applying stable shear force, testing material strength by applying stable tension/compression, etc., can solve the problem of low accuracy of fabric simulation analysis and achieve discrete The effect of small size, simple calculation method and good versatility

Pending Publication Date: 2022-03-15
GUANGZHOU AUTOMOBILE GROUP CO LTD
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Problems solved by technology

[0003] The invention provides a test method and device for fabric shear performance parameters to solve the technical problem of low accuracy of fabric simulation analysis, and improve the fabric quality by obtaining the constitutive relationship reflecting the shear performance of the fabric and the tensile force of the fiber bundle. Excellent simulation accuracy, avoiding wrinkling, thus improving the molding quality of the product

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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  • Method and device for testing shearing performance parameters of fabric
  • Method and device for testing shearing performance parameters of fabric
  • Method and device for testing shearing performance parameters of fabric

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0047] In the description of the present application, it should be noted that, unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art. The terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. Those of ordinary skill in the art can understand the...

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

The invention discloses a method and a device for testing shearing performance parameters of a fabric. The method comprises the following steps: acquiring geometric parameters and material parameters of the fabric; adjusting the drawing force acting on the fabric to obtain a drawing force change curve and a fabric shear angle change curve; determining a linear section shear angle interval and a nonlinear section shear angle interval according to a sudden change turning point in the fabric shear angle change curve; calculating the initial pressure between the fiber bundles according to a preset calculation formula of the initial pressure between the fiber bundles; calculating the transverse compression modulus of the fiber bundle according to a preset calculation formula of the transverse compression modulus of the fiber bundle; and constructing a constitutive relationship between the shearing performance of the fabric and the drawing force of the fiber bundle. According to the method and the device for testing the shearing performance parameters of the fabric provided by the embodiment of the invention, the constitutive relationship reflecting the shearing performance of the fabric and the drawing force of the fiber bundle is obtained, so that the simulation precision of the fabric is improved, and the forming quality of a product is further improved.

Description

technical field [0001] The invention relates to the technical field of fabric forming, in particular to a method and device for testing fabric shear performance parameters. Background technique [0002] Fiber composites have excellent mechanical properties and are widely used in the fields of automobiles, aerospace, and medical devices. In the manufacturing process of composite materials with textile fibers as reinforcements, it is often necessary to preform the textiles and then add matrix materials to form composite products. During the preforming process, the fiber bundle angle change and wrinkling phenomenon of the fabric will have a very important impact on the final product quality. Therefore, before the fabric is put into large-scale production, it is necessary to optimize the process parameters of the fabric through fabric simulation analysis. The shear performance parameter of the fabric is one of the very important parameters in the simulation analysis process. In...

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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IPC IPC(8): G01N3/24G01N3/08
CPCG01N3/24G01N3/08G01N2203/0017G01N2203/0025G01N2203/0282G01N2203/0682G01N2203/0676
Inventor 王艳超
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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