| 结构动力学疲劳损伤等效关系的研究 |
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| 引用本文： | 唐文,修建生,方红荣,王洪锐,贺启林.结构动力学疲劳损伤等效关系的研究[J].强度与环境,2013(6):33-38. |
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| 作者姓名： | 唐文 修建生 方红荣 王洪锐 贺启林 |
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| 作者单位： | 北京宇航系统工程研究所,北京100076 |
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| 基金项目： | 国家863项目（2011AA0170） |
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| 摘 要： | 弹（箭）体结构件在飞行过程中承受振动载荷作用，不同振动量级、振动时间下的疲劳损伤等效是快速评估结构环境适应性的重要手段。本文基于Miner准则和材料S-N曲线，得到疲劳损伤等效的定量关系，对MIL—STD-810F中的相关表述进行了澄清及讨论，介绍了等效关系在加速试验及可靠性试验中的应用。
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| 关 键 词： | 随机振动 正弦振动 疲劳损伤等效 |
Research on vibratory fatigue equivalency of structure |
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| TANG Wen,XIU Jiansheng,FANG Hongrong,WANG Hongrui,HE Qilin.Research on vibratory fatigue equivalency of structure[J].Structure & Environment Engineering,2013(6):33-38. |
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| Authors: | TANG Wen XIU Jiansheng FANG Hongrong WANG Hongrui HE Qilin |
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| Institution: | (Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China) |
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| Abstract: | Rocket unit is under vibration Loadings. Equivalence analysis technology of fatigue damage is an important method in evaluating structure environmental adaptation at different level and time. Based on Miner＇s Rule and S-N Approach, a quantitative equivalent relationship of fatigue damage was proposed, then the correlational content in MIL-STD-810F was discussed and clarified. The formula was applied in the acceleration and reliability test. |
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| Keywords: | random vibration sine wave vibration equivalence of fatigue damage |
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