一种基于开孔强度的复合材料纤维断裂能反演及仿真标定方法
By using a method based on pore strength and an analysis model based on stiffness invariants and energy conversion coefficients, the fracture energy of composite fiber is inverted and calibrated. This solves the problems of sample preparation difficulties and parameter overfitting in existing technologies, and achieves efficient and accurate acquisition of fiber fracture energy and finite element simulation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA AIRPLANT STRENGTH RES INST
- Filing Date
- 2026-05-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for obtaining fiber fracture energy in composite materials suffer from problems such as high sample preparation costs, high dispersion of test results, high time costs, and parameter overfitting, making it difficult to efficiently obtain stable fiber fracture energy for finite element simulation.
By employing a method based on perforation strength, the mechanical property parameters of unidirectional and multidirectional perforated laminates are obtained. Using stiffness invariants and classical laminate theory, combined with an energy conversion coefficient analysis model and an analytical indefinite integral polynomial operator, the fiber fracture energy is inverted and calibrated, avoiding complex traditional fracture mechanics tests and reducing the experimental threshold and time cost.
This method enables the accurate acquisition of steady-state fiber fracture energy of a 0° unidirectional plate without conducting complex experiments, reducing experimental costs and time. At the same time, it ensures the accuracy of finite element simulation under different mesh sizes and avoids parameter overfitting problems.
Smart Images
Figure CN122201567B_ABST