Methods for simulation-based emission of operational load signals
The FEM-based method for fatigue strength testing addresses inefficiencies in multi-channel loading by reconstructing load-time histories using indexed rainflow counting, achieving significant time savings while ensuring reliability and accuracy in fatigue strength testing.
Patent Information
- Application Number
- DE102024138536
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2026-03-19
- Estimated Expiration
- 2044-12-18
AI Technical Summary
Current methods for fatigue strength testing of multi-channel loaded components are inefficient and unreliable, failing to meet the requirements of both time and cost savings while maintaining test accuracy, particularly due to the lack of consideration for local fatigue processes and interaction between load channels.
A novel omission method based on FEM analysis that identifies critical reversal points in stress-time profiles using indexed rainflow counting, allowing for the reconstruction of load-time histories while maintaining sequence effects and ensuring a predefined maximum damage loss, thus shortening test duration without distorting fatigue results.
The method achieves an 82% reduction in test time for multi-channel loaded components by preserving the interaction of load channels and maintaining fatigue strength, with minimal impact on mechanical behavior, through the use of FEM-based simulation and indexed rainflow counting.