| 简谐荷载作用下伴生自由振动的研究 |
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| 引用本文： | 祁皑,范宏伟,陈永祥. 简谐荷载作用下伴生自由振动的研究[J]. 地震工程与工程振动, 2002, 22(6): 156-161 |
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| 作者姓名： | 祁皑 范宏伟 陈永祥 |
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| 作者单位： | 1. 福州大学,福建,福州,350002
2. 沈阳建筑工程学院,辽宁,沈阳,110015 |
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| 基金项目： | 沈阳市科学技术委员会项目“基础隔震技术的应用研究”(2 0 0 0 490 46) |
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| 摘 要： | 本文基于结构动力学的基本理论，推导了简谐荷载作用下，瞬态自由振动反应的理论解。与受迫振动的理论解比较，详细研究了伴生自由振动的各种动力反应（位移、加速度、内力）的振动规律。研究结果表明，在一定的参数范围内，伴生自由振动不能忽略，有时甚至是动力反应中的主要成分。
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| 关 键 词： | 简谐荷载作用 伴生自由振动 受迫振动 衰减 阻尼比 频率比 结构动力学 |
| 文章编号： | 1000-1301(2002)06-0156-06 |
Research on transient vibration under input of harmonic loading |
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| QI Ai ,FAN Hong wei ,CHEN Yong xiang. Research on transient vibration under input of harmonic loading[J]. Earthquake Engineering and Engineering Vibration, 2002, 22(6): 156-161 |
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| Authors: | QI Ai FAN Hong wei CHEN Yong xiang |
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| Affiliation: | QI Ai 1,FAN Hong wei 1,CHEN Yong xiang 2 |
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| Abstract: | Based on the theory of structural dynamics, the solutions of transient vibration under the input of sine wave were deduced. Compared with those of stable vibration, the characteristics of the transient dynamic responses(displacement, acceleration, internal force) were studied in details. Research results have shown that if the parameters are selected within a certain range, the transient vibration cannot be neglected, and especially, sometimes, the transient vibration would play a predominant role in total dynamical responses. |
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| Keywords: | transient vibration stable vibration attenuation damping ratio |
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