| 低频段保守耦合结构的功率流传递特性 |
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| 引用本文： | 亓水,张建,周凤敏. 低频段保守耦合结构的功率流传递特性[J]. 山东理工大学学报：自然科学版, 2006, 20(2): 33-35,39 |
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| 作者姓名： | 亓水 张建 周凤敏 |
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| 作者单位： | 山东理工大学,机械工程学院,山东,淄博,255049;山东理工大学,机械工程学院,山东,淄博,255049;山东理工大学,机械工程学院,山东,淄博,255049 |
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| 基金项目： | 国家自然科学基金资助项目(50175065) |
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| 摘 要： | 利用结构模态正交性假设,分析和推导了窄带激励下耦合系统在不满足统计平均假设的条件下的功率流与能量平衡方程,得到了物理意义明确的功率流表达式,实现统计性功率流理论在低频段的延拓,作为理论的一个应用实例,本文对保守耦合板的能量问题进行了理论和实验研究.文章指出了统计能量分析理论往低频拓的思想.
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| 关 键 词： | 保守耦合系统 功率流 统计能量分析 |
| 文章编号： | 1672-6197（2006）02-0033-03 |
| 收稿时间： | 2005-05-26 |
| 修稿时间： | 2005-05-26 |
Characteristics of power flow transmission of conservatively coupled systems at low frequencies |
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| QI Yong,ZHANG Jian,ZHOU Feng-min. Characteristics of power flow transmission of conservatively coupled systems at low frequencies[J]. Journal of Shandong University of Technology:Science and Technology, 2006, 20(2): 33-35,39 |
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| Authors: | QI Yong ZHANG Jian ZHOU Feng-min |
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| Affiliation: | School of Mechanical Engineering, Shandong, Shandong University of Technology, Zibo 255049, China |
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| Abstract: | In this paper,by using the hypothesis of noncorrelative model about structure,equations betwen power flow and energy about coupling system under the condition that is unsatisfied the statistical hypothesis on narrow bands excitation are analyzed and derived to obtain power flow formula that has specific physical meaning and the theory of statistical power flow is extended to low frequencies.As an application of the theory,energy problems of conservatively coupled plates are studied theoretically and experimentally.Finally,based on the analysis,the idea of Statictical Energy Analysis(SEA) extended to low frefquencies is pointed out. |
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| Keywords: | conservatively coupled systems power flow statictical energy analysis(SEA) |
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