| 汽轮发电机弹簧隔振基础的隔振效率分析 |
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| 引用本文： | 郑伯兴,周雷靖,周向阳.汽轮发电机弹簧隔振基础的隔振效率分析[J].电力建设,2011,32(4):59-62. |
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| 作者姓名： | 郑伯兴 周雷靖 周向阳 |
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| 作者单位： | 广东省电力设计研究院 |
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| 摘 要： | 分别从单自由度系统、双自由度系统以及多自由度系统角度，分析了弹簧隔振基础的隔振效率。采用双自由度振动方程对隔振效率进行了理论推导，得出位移之比隔振效率的理论公式；采用振动方程与有限元分析相结合的方法，得出单自由度系统总体平均隔振效率数值偏高，双自由度系统总体平均隔振效率接近于有限元分析结果，转子扰力相位对隔振效率计算有影响，实际工程设计可采用平方和开平方（square root of the sum of squares，SRSS）方法求得隔振效率。
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| 关 键 词： | 弹簧隔振基础 隔振效率 单自由度系统 双自由度系统 平方和开平方（SRSS） 动力测试 |
| 收稿时间： | 2010-08-26 |
Analysis on the Vibration Isolation Efficiency of Spring-supported Turbo-generator Foundation |
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| ZHENG Boxing,ZHOU Leijing,ZHOU Xiangyang.Analysis on the Vibration Isolation Efficiency of Spring-supported Turbo-generator Foundation[J].Electric Power Construction,2011,32(4):59-62. |
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| Authors: | ZHENG Boxing ZHOU Leijing ZHOU Xiangyang |
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| Affiliation: | ZHENG Boxing,ZHOU Leijing,ZHOU Xiangyang (Guangdong Electric Power Design Institute,Guangzhou 510663,China) |
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| Abstract: | The vibration isolation efficiency of spring vibration-isolation foundation is analyzed with single degree of freedom (SDOF) system,two-degree of freedom system and multi-degree of freedom system.The displacement theoretical formula of the isolation efficiency is deduced with two-degree of freedom vibration equation.It is concluded through vibration equation and finite element analysis that the general average isolation efficiency of the single degree of freedom system is on the high side,while the general ... |
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| Keywords: | spring vibration-isolation foundation vibration isolation efficiency single degree of freedom system two-degree of freedom system square root of the sum of squares (SRSS) dynamic test |
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