一种大型航天器长距离运输疲劳损伤评估方法
By classifying and processing acceleration response data and calculating fatigue life during spacecraft transportation, the problem of accuracy in assessing fatigue damage of large spacecraft during long-distance transportation has been solved, enabling reasonable assessment of fatigue life and guidance for solutions during spacecraft transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA ACADEMY OF SPACE TECHNOLOGY
- Filing Date
- 2023-09-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to accurately assess the fatigue life loss of spacecraft caused by complex loads during long-distance transportation, especially for large spacecraft with small structural strength margins, making it difficult to assess fatigue damage using traditional methods.
By acquiring acceleration response data during spacecraft transportation, the data is classified into vibration and shock signals of different magnitudes. The fatigue life consumption of the spacecraft under sinusoidal vibration and half-sinusoidal shock is calculated using the rainflow counting method and the Goodman equivalent method. The results are then combined with the material's SN curve for comprehensive evaluation.
This study provides a method for accurately and conservatively assessing fatigue damage during spacecraft transportation, reducing computational complexity and providing effective guidance for transportation planning.
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Figure CN117435843B_ABST