摘要
大型钢结构件微小损伤的存在、发展决定着结构的可靠性和安全性,利用结构应变模态对结构的微小损伤的敏感性,可以及时定性的监测诊断结构损伤的位置以及发展状况,对于保障结构的可靠性、安全性具有重要意义。文章从理论上研究应变模态的原理和应变模态参数识别方法,并通过实验获得试验模型的应变模态参数、应变模态振型,为工程实际应用提供必要的理论、实践依据。
The reliability and security of the steel structure is affected by the existence and development of the small damage. The position and development condition of the small damage can be monitored and tested timely by utilizing the structure strain modal, which is sensitive to the structure small damage. This is important to guarantee the reliability and security of the steel structure. The principle of the strain modal and the parameter distinguishing method are studied. The parameter and mode shape of the strain modal are obtained through the experiment in the paper, which provides the necessary theory and application basis for practical application.
出处
《太原科技大学学报》
2008年第4期291-294,共4页
Journal of Taiyuan University of Science and Technology
关键词
结构损伤
应变模态
应变模态参数识别
damage of structure, strain modal, strain modal parameter distinguishing
