Circular Pipe Filament Winding Simulation for Uniform Patterns

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Solution Overview

Problem

Existing filament winding technologies struggle to effectively simulate the winding pattern of small angle circular pipes, leading to inefficiencies and fiber waste due to issues like pin interference and uneven coverage, necessitating costly production tests.

Innovation Solution

A method and system for simulating the filament winding process that constructs a stepped shaft circular pipe model, calculates initial and theoretical center rotation angles, and optimizes slip coefficients to ensure uniform winding, using OpenGL and continued fraction theory to determine stable pattern trajectories.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional filament winding simulation is used, then the simulation process is simple, but the winding pattern cannot be effectively displayed and uniform coverage cannot be determined

Engineering Contradiction:
Improvewinding pattern display precisionVSAvoidsimulation system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The simulation system is divided into multiple functional modules: mandrel model construction module, pattern trajectory calculation module, roving width display module, and overlap detection module. Each module handles specific aspects of the simulation, allowing complex functionality to be achieved through coordinated simple components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The simulation transitions from 2D pattern representation to 3D visualized winding patterns with actual roving width display. The system calculates and displays the three-dimensional spatial distribution of fiber layers, enabling determination of uniform coverage and detection of pin interference in the third dimension.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If production tests are conducted to verify winding patterns, then accurate pattern verification is achieved, but production efficiency decreases

Engineering Contradiction:
Improvepattern verification accuracyVSAvoidproduction efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The system performs comprehensive winding pattern simulation, uniformity verification, and pin interference detection before actual production. By calculating theoretical center rotation angles, determining slip coefficients, and visualizing the complete winding pattern with roving width in advance, all verification is completed preliminarily, eliminating the need for costly and time-consuming production tests.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system creates a virtual copy of the filament winding process through computer simulation. This digital twin replicates the actual winding behavior, allowing complete verification of winding patterns, uniformity assessment, and interference detection in the virtual environment without affecting physical production.

Inventive Principle:
Principle #26Copying

3Ease of manufacture

If small angle circular pipes are wound with traditional methods, then the winding process is straightforward, but pin interference and uneven coverage occur

Engineering Contradiction:
Improvewinding process simplicityVSAvoidwinding uniformity
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The system performs preliminary analysis to identify and prevent pin interference and uneven coverage before they occur. By calculating the complete winding trajectory, determining appropriate slip coefficients, and visualizing the pattern with roving width in advance, the system identifies potential interference points and uniformity issues, allowing parameter adjustment to prevent these problems in actual production.

Inventive Principle:
Principle #9Preliminary anti-action

4Loss of substance

If fiber waste is reduced through better pattern control, then material efficiency improves, but simulation complexity increases

Engineering Contradiction:
Improvefiber wasteVSAvoidsimulation system complexity
Core Design Contradiction:
Loss of substanceVSDevice complexity

Solution Approach 1:

The system replaces physical trial-and-error pattern adjustment with computer-based mathematical calculation and visualization. By using computational algorithms to calculate theoretical center rotation angles, determine slip coefficients, and display winding patterns with roving width, the system achieves precise fiber placement control without the material waste associated with physical testing and iteration.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12450404B1Circular pipe filament winding process simulation method, system, medium, and product
Publication Date: 2025.10.21 HEFEI UNIV OF TECH
  • US12450404B1 patent drawing
  • US12450404B1 patent drawing

AI summary

A circular pipe filament winding process simulation method includes: according to the geometric parameter of the circular pipe and the current pseudo dome parameter, constructing the stepped shaft circular pipe model; according to the winding parameter, calculating the initial center rotation angle for filament winding; according to the initial center rotation angle and the given deviation rotation angle, calculating the theoretical center rotation angle; according to the theoretical center rotation angle, determining the theoretical slip coefficient within the given slip coefficient range; determining whether the slip coefficient of the end point of the current stepped shaft circular pipe model is less than the current theoretical slip coefficient; if so, performing the simulation of the circular pipe filament winding process, and obtaining the trajectory according to the current theoretical slip coefficient; and if not, modifying the current pseudo dome parameter, and returning steps of constructing the stepped shaft circular pipe model.