Iterative friction coefficient non-geodesic trajectory design method

By using an iterative non-geodetic trajectory design method for friction coefficient, and optimizing the friction coefficient using error functions and tangent methods, the problem of determining the friction coefficient in existing technologies is solved. This achieves precise closure and uniform distribution of fiber winding trajectories, thereby improving the quality and performance stability of composite materials.

CN121983206BActive Publication Date: 2026-06-26HUNAN JIANGNAN SILING NC MACHINERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN JIANGNAN SILING NC MACHINERY CO LTD
Filing Date
2026-04-08
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies require extensive experimental verification to determine the friction coefficient during fiber winding, and the obtained friction coefficients are mostly fixed values, which are difficult to adapt to changes in different fiber materials, mandrel surface conditions, and process parameters, resulting in poor winding trajectory closure and uneven fiber distribution.

Method used

A non-geodetic trajectory design method based on iterative friction coefficient is adopted. By constructing an error function and using the chord-tangent method to iteratively optimize the friction coefficient, a mathematical correlation is established using the difference between the target phase and the actual landing phase, thereby achieving automatic adjustment and precise control of the friction coefficient.

Benefits of technology

It achieves precise closure and uniform distribution of the winding trajectory, avoids the complexity brought about by the trial and error method, and improves the designability of fiber placement and the stability of product quality.

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Abstract

The application discloses a kind of non-geodesic trajectory design methods of iterative friction coefficient, belong to material forming technical field, by the value of initial condition solving non-geodesic equation obtains winding trajectory, then calculate whether the phase difference of the starting position of a winding cycle winding trajectory satisfies target phase difference, again by iterative friction coefficient to adjust this phase difference makes that winding trajectory is on the basis of closure in space certain deviation, obtain first basic cycle, then extend winding to be able to form continuous, complete winding effect.The method is determined by numerical optimization technique optimal friction coefficient, while ensuring that friction coefficient is reasonable, winding trajectory can also be well closed and evenly distributed, to improve product quality.
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