一种焊接接头疲劳寿命的预测方法、系统及设备
By using the improved Ramberg-Osgood model and analytical formulas, combined with the master EN curve, the problem of fatigue life prediction for welded joints was solved, enabling simplified calculation of structural strain and accurate prediction of fatigue life.
CN117787061BActive Publication Date: 2026-07-17SOUTHEAST UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHEAST UNIV
- Filing Date
- 2024-01-03
- Publication Date
- 2026-07-17
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Figure CN117787061B_ABST
Abstract
本发明公开了一种焊接接头疲劳寿命的预测方法、系统及设备，属于机械结构焊接疲劳领域。本申请提出的计算结构应变的解析方法，避免了预测疲劳寿命时需要利用数值方法计算结构应变的过程，从而解决了传统结构应变法依赖专属程序的缺点，大幅提高结构应变法的易用性和实用性。其基本过程如下：在得到焊接接头位置结构应力后，利用发明提出的解析方法计算结构应变。根据Miner准则，计算等效结构应变，最后根据等效结构应变参数利用主E‑N曲线计算焊接接头疲劳寿命。
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