摘要
针对聚合物填充钢管试件,采用锤击试验法进行模态参数识别,得出试件的前4阶模态参数;采用最小二乘法确定试件的比例阻尼系数;通过自由振动试验测得各试件的阻尼比。与空钢管试件对比,聚合物填充钢管试件在阻尼比和比例阻尼系数上都有显著提高,具有很好的阻尼性能。
In this paper,the first four modal parameters of polymer filled steel tubes are determined with the application of the identification of performance parameters theory and the modal test method of hammer impact. And their proportional damping coefficients are determined by means of the method of least squares. The damping ratios of them are also determined with the test method of free vibration. By comparing with empty steel tubes,the results show that the damping ratios and the damping proportional coefficients of polymer filled steel tubes enhance remarkably, and they have very good damping properties.
出处
《工业建筑》
CSCD
北大核心
2010年第3期124-127,共4页
Industrial Construction
基金
国家自然科学基金项目(50578005)
关键词
聚合物
参数识别
阻尼比
比例阻尼系数
polymer
identification of performance parameter
damping ratio
proportional damping coefficient
