广义的材料低周疲劳与蠕变-疲劳寿命预测方法及系统
By conducting low-cycle fatigue and creep-fatigue tests on materials under the same conditions, a life prediction model was constructed, which solved the problem of high model complexity in the existing technology and achieved high-precision, low-complexity life prediction.
CN117825136BActive Publication Date: 2026-07-17EAST CHINA UNIV OF SCI & TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- EAST CHINA UNIV OF SCI & TECH
- Filing Date
- 2024-01-10
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
While existing methods for predicting material fatigue and creep-fatigue life are highly accurate, their high model complexity limits their engineering applications.
Method used
By conducting low-cycle fatigue and creep-fatigue tests on materials under the same control mode and temperature conditions, the mechanical response and experimental life of materials after a stable number of cycles are obtained, and a life prediction model is constructed. The model has a simple expression form and contains only one unknown parameter.
Benefits of technology
While ensuring prediction accuracy, the model complexity is significantly reduced, meeting the needs of engineering applications.
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Abstract
本发明公开了一种广义的材料低周疲劳与蠕变‑疲劳寿命预测方法及系统，涉及材料寿命预测技术领域，方法包括：在相同控制模式和相同温度条件下，进行材料低周疲劳与蠕变‑疲劳试验；获取材料低周疲劳与蠕变‑疲劳试验过程中稳定循环周次处的力学响应和材料实验寿命；基于力学响应和材料实验寿命构建寿命预测模型；根据寿命预测模型预测材料在其他工况下的低周疲劳与蠕变‑疲劳寿命。本发明中的寿命预测模型表达形式简单，仅包含一个未知参数，在保证材料寿命预测精度的同时，大大降低了模型复杂度，满足了工程使用需求。
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