摘要
工程应用中大量的原型观测得到的时间序列位移数据 ,反映了被观测物体在环境与荷载等作用下产生的动态演变过程 ,蕴藏着与被观测体形变相关联的变量系统的变化痕迹 在动态响应实验中 ,实验数据受到外界非确定因素的干扰及自身特定情况的影响 ,不可避免地夹杂一些不必要的信号数据 为提取其中的有用动力学信息 ,对结构瞬态激励下的响应数据进行相空间重构 ,并对实验数据进行关联度分析 ,证实了瞬态激励下的响应数据具有C(r)∝rD 的标度关系 通过实例运算得出的结果具有很强的适用性 ,为今后利用结构瞬态激励下的响应数据提取各种有用的信息提供了依据 。
The time sequence displacement data obtained in many engineering prototype observations have reflected the dynamic evolution process produced by observation object under environment, load and etc., containing the trace of the systematic change in relation to observed body form. In dynamic response experiment, the experimental data are influenced by outside indefinte factors and the inherent condition, and will unavoidably carry some unnecessary signal data. In order to draw the useful dynamics information, we carry out phase space reconstruction with the response data coming from structural transient excitation. The authors also make relation degree analysis for experimental data. It is confirmed that the response data coming from transient excitation have the scale relation of C(r)∝r D
出处
《江苏大学学报（自然科学版）》
EI
CAS
2003年第1期91-94,共4页
Journal of Jiangsu University：Natural Science Edition
基金
江苏省教育厅自然基金资助项目 (99KJB13 0 0 0 1)
