| 倪瑞政,徐如远,赵朋飞,张生鹏,李宏民.弹性杆步进应力加速老化试验退化趋势分析[J].装备环境工程,2025,22(5):20-25. NI Ruizheng,XU Ruyuan,ZHAO Pengfei,ZHANG Shengpeng,LI Hongmin.Analysis of Degradation Trend in Step Stress Accelerated Aging Test of Torsion Bar[J].Equipment Environmental Engineering,2025,22(5):20-25. |
| 弹性杆步进应力加速老化试验退化趋势分析 |
| Analysis of Degradation Trend in Step Stress Accelerated Aging Test of Torsion Bar |
| 投稿时间：2025-03-28 修订日期：2025-05-14 |
| DOI：10.7643/issn.1672-9242.2025.05.004 |
| 中文关键词: 步进应力 加速老化 弹性杆 松弛速率 扭矩 等效退化 温度折算中图分类号:V416 文献标志码:A 文章编号:1672-9242(2025)05-0020-06 |
| 英文关键词:step stress accelerated aging torsion bar relaxation rate torque equivalent degradation temperature conversion |
| 基金项目:装备预先研究共用技术(50904060202) |
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| Author | Institution |
| NI Ruizheng | Aerospace Science and Technology Defense Technology Research and Experiment Center, Beijing 100854, China |
| XU Ruyuan | Aerospace Science and Technology Defense Technology Research and Experiment Center, Beijing 100854, China |
| ZHAO Pengfei | Aerospace Science and Technology Defense Technology Research and Experiment Center, Beijing 100854, China |
| ZHANG Shengpeng | Aerospace Science and Technology Defense Technology Research and Experiment Center, Beijing 100854, China;Beihang University, Beijing 100191, China |
| LI Hongmin | Aerospace Science and Technology Defense Technology Research and Experiment Center, Beijing 100854, China;Beihang University, Beijing 100191, China |
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| 中文摘要: |
| 目的 快速评估金属弹性杆件的退化过程。方法 提出一种对不同温度应力下测量结果的等效折算方法，通过计算出不同温度应力下的退化速率，折算为同一温度下的等效退化速率。然后通过温度等效后的结果换算得到常温下的退化结果，便可得到弹性杆在常温下的退化速率。结果 2根弹性杆的退化趋势基本一致，数据拟合结果十分理想，2根弹性杆在常温下的退化速率分别为–2.06×10–4 N.m/h和–9.02×10–5 N.m/h，与恒定应力退化结果(–4.752 2×10–4 N.m/h)基本一致。结论 提出的弹性杆件步进应力退化计算方法具有准确性和有效性。 |
| 英文摘要: |
| The work aims to quickly evaluate the degradation process of metal torsion bars. An equivalent conversion method was proposed for measurement results under different temperature stresses. The degradation rate under different temperature stresses was calculated and converted to the equivalent degradation trend at the same temperature. The degradation result at room temperature was obtained by converting the temperature equivalent results to get the degradation rate of the torsion bar at room temperature. The degradation trend of the two torsion bars was basically consistent, and the data fitting results were ideal. The degradation trend of the two torsion bars was –2.06×10–4 N.m/h and –9.02×10–5 N.m/h respectively, which were basically consistent with the constant stress degradation result of –4.752×10–4 N.m/h. The step stress degradation calculation method proposed for torsion bars is accurate and effective. |
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