| 多自由度结构受迫振动中的能量共振 |
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| 引用本文： | 谢能刚,宋修广.多自由度结构受迫振动中的能量共振[J].振动与冲击,2002,21(3):40-42. |
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| 作者姓名： | 谢能刚 宋修广 |
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| 作者单位： | 1. 安徽工业大学机械系,马鞍山,243002
2. 山东大学土木工程学院,济南,250018 |
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| 基金项目： | 安徽省教委基金项目 (2 0 0 0JL1 78) |
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| 摘 要： | 从结构的能量平衡方程出发，对多自由度结构受迫振动中的能量响应特性和能量共振进行了分析。以一柱状结构为例，当简谐激励荷载的频率与结构系统自振频率很接近时，结构的能量响应会出现非常大的突变，即能量共振；针对不同方向的激励荷载，由于结构的振型特征，其能量共振频率对应不同阶的自振频率。
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| 关 键 词： | 多自由度结构 受迫振动 能量共振 结构振动 能量响应 |
| 修稿时间： | 2001年11月28 |
ENERGY RESONANCE OF STRUCTURE WITH MULTIPLE DEGREES OF FREEDOM IN FORCED VIBRATION |
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| Xie Nenggang.ENERGY RESONANCE OF STRUCTURE WITH MULTIPLE DEGREES OF FREEDOM IN FORCED VIBRATION[J].Journal of Vibration and Shock,2002,21(3):40-42. |
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| Authors: | Xie Nenggang |
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| Abstract: | Based on analysis models of energy response character of structure with multiple degrees of freedom in forced vibration,some conclusions of energy resonance are drawn out from the result of an example of a column structure.It is found that the energy response of the structure experiences enormous increment when the frequency of the excitation is very close to the natural frequency of the structure,and resonant frequencies correspond to the different natural frequencies due to the vibration modes of structure under excitation at different directions. |
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| Keywords: | multiple degrees of freedom structure forced vibration energy resonance |
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