| 高博,张忠,王帅,钟嫄,李海波.疲劳损伤谱时域、频域计算方法及其等效性验证[J].装备环境工程,2021,18(10):52-57. GAO Bo,ZHANG Zhong,WANG Shuai,ZHONG Yuan,LI Hai-bo.Calculation Methods of Fatigue Damage Spectrum in Time Domain and Frequency Domain and Their Equivalence Verification[J].Equipment Environmental Engineering,2021,18(10):52-57. |
| 疲劳损伤谱时域、频域计算方法及其等效性验证 |
| Calculation Methods of Fatigue Damage Spectrum in Time Domain and Frequency Domain and Their Equivalence Verification |
| 投稿时间：2021-08-10 修订日期：2021-09-18 |
| DOI：10.7643/issn.1672-9242.2021.10.009 |
| 中文关键词: 响应谱 疲劳损伤谱 时、频域计算等效性 |
| 英文关键词:response spectrum fatigue damage spectrum time and frequency domain calculation equivalence |
| 基金项目: |
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| Author | Institution |
| GAO Bo | Beijing Institute of Strength and Environment, Beijing 100076, China |
| ZHANG Zhong | Beijing Institute of Strength and Environment, Beijing 100076, China |
| WANG Shuai | Beijing Institute of Strength and Environment, Beijing 100076, China |
| ZHONG Yuan | Beijing Institute of Strength and Environment, Beijing 100076, China |
| LI Hai-bo | Beijing Institute of Strength and Environment, Beijing 100076, China |
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| 中文摘要: |
| 目的 验证疲劳损伤谱时域计算方法与频域计算方法的等效性。方法 将疲劳损伤谱的时域方法与频域方法编写为MATLAB程序，以典型载荷加速度功率谱为例，反推其加速度时程，分别用加速度功率谱、加速度时程数据通过频域及时域方法计算疲劳损伤谱，对比疲劳损伤谱曲线，从而验证时域算法与频域算法的等效性。结果 疲劳损伤谱的低频部分，时域方法得到的疲劳损伤大于频域结果；高频部分，时域算法与频域算法得到的曲线结果基本一致。结论 疲劳损伤谱的时域算法与频域算法具有等效性。 |
| 英文摘要: |
| This paper aims to verify the equivalence of time domain calculation method and frequency domain calculation method of fatigue damage spectrum. The time domain method and frequency domain method of fatigue damage spectrum are compiled into MATLAB programs. Taking the acceleration power spectrum of typical load as an example, the acceleration time-histories are deduced. The fatigue damage spectrum is calculated by frequency domain and time domain method with the acceleration power spectrum and acceleration time-histories data respectively, and the fatigue damage spectrum curve is compared to verify the equivalence of time domain algorithm and frequency domain algorithm. In the low frequency part of fatigue damage spectrum, the fatigue damage obtained by time domain method is greater than that by frequency domain method; In the high frequency part, the curve results obtained by time domain algorithm and frequency domain algorithm are basically consistent. In conclusion, the time domain algorithm of fatigue damage spectrum is equivalent to the frequency domain algorithm. |
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