| 割线法估计阻尼比 |
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| 引用本文： | 张强,陈奎孚,张森文. 割线法估计阻尼比[J]. 机械强度, 2006, 28(4): 494-497 |
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| 作者姓名： | 张强 陈奎孚 张森文 |
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| 作者单位： | 上海师范大学,建筑工程学院,上海,201418;中国农业大学,工程基础科学部,北京,100083;暨南大学,应用力学研究所,广州,510632 |
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| 基金项目： | 国家自然科学基金;广东省自然科学基金;上海市高等学校优秀青年教师后备人选计划 |
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| 摘 要： | 提出利用相邻波峰和波谷之间距离估计阻尼比的割线方法。研究表明，与传统的对数衰减法相比，新方法无须确定基线，估计结果对基线漂移和低频干扰不敏感。
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| 关 键 词： | 振动 阻尼 对数衰减法 结构稳定性 |
| 收稿时间： | 2004-11-22 |
| 修稿时间： | 2004-11-222006-04-02 |
METHOD OF SECANT LINE TO ESTIMATE DAMPING RATIOS |
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| ZHANG Qiang,CHEN KuiFu,ZHANG SenWen. METHOD OF SECANT LINE TO ESTIMATE DAMPING RATIOS[J]. Journal of Mechanical Strength, 2006, 28(4): 494-497 |
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| Authors: | ZHANG Qiang CHEN KuiFu ZHANG SenWen |
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| Affiliation: | 1. Architecture Engineering School, Shanghai Normal University, Shanghai 201418, China ;2. College of Basic Engineering Science, China Agricultural University, Beijing 100083, China ;3. Institute of Applied Mechanics, Jinan University, Guangzhou, 510632, China |
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| Abstract: | A new damping estimation method, the secant line method, was presented, that is based on the distance of neighbor peaks and valley of oscillation. The studies show that compared with the conventional logarithmic decrement method, this method need not to determine the baseline, and is insensitive to baseline drift and low frequency interference. |
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| Keywords: | Vibration Damping Logarithmic decrement method Structure stability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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