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Automatic tape laying track planning method based on isogeodesic curvature curve

A geodesic curvature and trajectory planning technology, applied in image data processing, special data processing applications, instruments, etc., can solve problems such as large local deformation of prepreg tapes, and achieve the effect of reducing the amount of deformation and reducing the complexity.

Active Publication Date: 2020-10-27
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, offsets between each small geodesic segment may cause large local deformations in the prepreg tape

Method used

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  • Automatic tape laying track planning method based on isogeodesic curvature curve
  • Automatic tape laying track planning method based on isogeodesic curvature curve
  • Automatic tape laying track planning method based on isogeodesic curvature curve

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Such as figure 1 As shown, an automatic tape-laying trajectory planning method based on isogeometric curvature curves is characterized in that it includes the following steps:

[0047] S1. Input the three-dimensional model of the surface of the mold to be placed, the width W of the prepreg tape, and the laying direction of the prepreg tape;

[0048] S2. Select a boundary of the mold surface, and set multiple starting points of prepreg tape on the boundary, so that the distance between adjacent starting points of the prepreg on the boundary of the mold surface is W+s, where s is the unit Is mm and s∈(0,1];

[0049] S3. Construct a geodesic line along the starting point set in step S2, until the trajectory of the geodesic line reaches another boundary of the curved surface, and the direction of the geodesic line is the same as the laying direction of the prepreg tape in step S1;

[0050] S4. Take the geodesic constructed in step S3 as the proposed trajectory of the prepreg tape,...

Embodiment 2

[0081] A method for automatic tape laying trajectory planning based on iso-geometric curvature curves, which is characterized in that it comprises the following steps:

[0082] S1. Input the three-dimensional model of the surface of the mold to be placed, the width W of the prepreg tape, and the laying direction of the prepreg tape;

[0083] S2. Select a boundary of the mold surface, and set multiple starting points of prepreg tape on the boundary, so that the distance between adjacent starting points of the prepreg on the boundary of the mold surface is W+s, where s is the unit Is mm and s∈(0,1];

[0084] S3. Construct a geodesic line along the starting point set in step S2, until the trajectory of the geodesic line reaches another boundary of the curved surface, and the direction of the geodesic line is the same as the laying direction of the prepreg tape in step S1;

[0085] S4. Take the geodesic constructed in step S3 as the proposed trajectory of the prepreg tape, and calculate t...

Embodiment 3

[0125] In this embodiment, a process of automatic tape laying trajectory planning on a hyperboloid mold is provided, which is specifically as follows:

[0126] S1. Enter the three-dimensional model of the hyperboloid mold, the width of the prepreg tape is 150mm, and the layering direction is 0 degrees; Figure 4 As shown, the size of the hyperboloid mold is 1000mm×5000mmm;

[0127] S2. Set multiple prepreg tape placement starting points on one boundary of the hyperboloid mold, while ensuring that the distance between adjacent placement starting points on the mold boundary is 151mm;

[0128] S3. Such as Figure 5 As shown, from the starting point of each laying, a geodesic is constructed along the laying direction until the trajectory of the geodesic reaches the other boundary of the surface;

[0129] S4. Take the geodesic line as the planned tape trajectory during the prepreg tape laying process, and calculate the gap size between adjacent prepreg tapes. The result shows that there is ...

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Abstract

The invention discloses an automatic tape laying track planning method based on an isogeodesic curvature curve. The method comprises the following steps: inputting a three-dimensional model of a curved surface of a to-be-laid mold, the width W of prepreg tapes and the laying direction of the prepreg tapes, setting starting points with the interval of W + s, constructing geodesic lines according tothe starting points, and calculating laying gaps between all adjacent prepreg tapes by taking the geodesic lines as a planned tape laying track of the prepreg tapes; and correcting the planned tape laying track which does not meet the gap requirement to obtain a final tape laying track. According to the method, the non-developable curved surface upper belt laying track can be planned, the tediousdegree of the belt laying track planning process is reduced, it can be effectively guaranteed that the adjacent laid prepreg belts cannot be covered through track planning, and the adjacent prepreg belts meet the gap requirement.

Description

Technical field [0001] The invention relates to the technical field of composite material automatic tape laying and molding, in particular to an automatic tape laying trajectory planning method based on isogeometric curvature curves. [0002] technical background [0003] Automatic tape laying technology is a typical representative of composite material forming automation. It is an important way to realize the "low-cost, high-performance, and high-efficiency" manufacturing of composite materials. It is widely used in the manufacture of aerospace high-performance composite material structures. Trajectory planning is a key link of automatic tape laying technology, which directly affects the accuracy and efficiency of the laying process and the quality of the final product. Automatic belt laying trajectory planning has the following requirements: 1. Ensure that the wrinkles or stretching caused by a single belt material are as small as possible; 2. Ensure that two adjacent belt materi...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06T19/20
CPCG06F30/20G06T19/20
Inventor 张鹏黄龙尹来容
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY