| 张建伟,练继建,王海军.水工结构泄流激励动力学反问题研究进展[J].水利学报,2009,40(11): |
| 水工结构泄流激励动力学反问题研究进展 |
| Progress of research on backward problems of hydraulic structure dynamics induced by flow excitation |
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| DOI： |
| 中文关键词: 水工结构 泄流激励 动力学反问题 |
| 英文关键词: hydraulic structure flow_induced vibration dynamical backward problems |
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| 中文摘要: |
| 针对我国水工结构运行过程中存在的诸多安全问题，本文结合泄流激励的特点，从动力学角度对水工结构的反问题进行全面总结。首先阐述了水工结构流激振动动力学正问题研究中所存在的问题以及对水工结构进行动力学反问题研究的必要性与迫切性，流激振动分析所涉及的四类结构动力学问题，以及流激振动动力学正、反问题之间的关系；然后对水工结构反问题从模态参数辨识、激励源辨识、损伤诊断与监测3个方面进行回顾与评述；最后对水工结构反问题研究所面临的问题及研究重点进行展望。 |
| 英文摘要: |
| A summary on the advancement of study on backward problems of hydraulic structure excitated by flow is presented vibration_based health monitoring for structures under ambient_excitation is becoming a hot research subject in the present structural engineering circle due to its promising prospects of application. Aimed at many operating safe problems, backward problems are summarized from dynamics combined with the characteristic of flow induced excitation. Firstly, the problems existed in dynamical forward problems of flow_induced vibration, the necessity and instancy to go on the study of backward problems, and the four sorts of dynamical problems,and also the relationship between forward and backward problems are all expounded. Then the backward problems are retrospected and commented from modal parameter identification, excitation source identification, damage diagnosis and monitoring of hydraulic structure.Finally, the confronted problems and research points of dynamical backward problems in hydraulic structure are prospected. |
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