Composite structure part profiling data generation method based on finite element model

By using a finite element model-based method, key feature points of composite parts are determined and forced displacement is applied, which solves the problem of low contouring efficiency of composite parts and enables rapid generation of contouring data to support non-destructive testing.

CN115935451BActive Publication Date: 2026-07-03CHINA BUILDING MATERIALS (SHANGHAI) AVIATION TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA BUILDING MATERIALS (SHANGHAI) AVIATION TECH CO LTD
Filing Date
2022-12-19
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

In the non-destructive testing of large composite material parts, the existing technology of manual sampling and profiling is cumbersome and time-consuming, especially when the deviation between the real component and the original digital model is large, the profiling efficiency is low.

Method used

By using a finite element model-based method, key feature points of composite parts are determined, and these points are sampled and registered with the reference point data of the original digital model. Forced displacement is then applied to generate composite contouring data, reducing the number of sampling points and time, and improving contouring efficiency.

Benefits of technology

It enables rapid generation of composite material contouring data, improves contouring efficiency, and can still quickly generate contouring data when the deviation of composite parts is large, supporting path planning for non-destructive testing equipment.

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Abstract

The application provides a composite structure part profiling data generation method based on a finite element model, comprising the following steps: determining N key feature points based on a composite part; obtaining sampling point data by sampling the composite part; determining reference feature points, and obtaining reference point data according to the reference feature points and the original numerical model sampling points; registering the sampling point data and the reference point data and measuring a deformation distance; dividing the reference point data into adjustment point data and registration point data according to the deformation distance; importing the original numerical model into finite element software, constraining the registration point data, and applying a forced displacement to the adjustment point data to obtain displacement point data; obtaining final deformation data according to the displacement point data, and converting the final deformation data into composite profiling data. The method can reduce the time cost of sampling points and realize the rapid generation of composite profiling data by registering the sampling point data and the reference point data, and applying a forced displacement to the adjustment point data in the finite element software to deform the original numerical model according to the state of the composite part.
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