基于振动台试验的结构模态参数辨识  

Modal Parameter Discrimination of Structural Mode based on Vibration Test

作　　者：宋汉文[1] 干小戈[1] 周莹[1] 夏江宁[1] 张声雷[2] 杨炳渊[2] 

机构地区：[1]复旦大学力学与工程科学系,上海200433 [2]上海航天技术研究院第八设计部,上海200233

出　　处：《装备环境工程》2006年第5期31-35,共5页Equipment Environmental Engineering

摘　　要：根据采用振动台环境试验数据,得到了以振动台台面与被测对象之间连接点为激励点,测点为响应点的被测结构频率响应函数,从而获得了结构的模态参数。以模态试验的结果作为衡量标准,验证了利用振动试验的力控数据进行模态分析的正确性和可行性。Based on the data of vibration environmental test, the acceleration transfer function and the generalized frequency re- sponse functions（GFRFs） were obtained. The link points between the base table and the items were the exciting source. Then, the modal parameters of the structure were acquired. The results of the modal test were used as the criterion to validate the correctness and feasibility of the modal analysis based on the vibration test data from Force Limited Vibration Testing.

关 键 词：振动试验 模态 分析 

分 类 号：O321[理学—一般力学与力学基础]