时变弹性梁横向响应载荷识别

Identification Method of Transverse Responding Load for Time-Varied Elastic Beam

利用小波分析在时频两域都具有表征信号局部特征的特点,对时变弹性梁实际测量加速度数据进行了小波分解,然后从结构动力学理论出发提出了一种评估时变弹性梁截面弯矩的方法,结合时变弹性梁实际测量加速度数据对弹性梁主要截面弯矩进行了评估,给出了评估结果,并与试验结果进行了比较。文中的方法对自由-自由运行的弹性梁截面横向载荷的评估及设计具有重要的参考意义。

With the character of the signal local characteristics both in frequency and time domain shown in the wavelet analysis, the wavelet decompose analysis for the actually measured acceleration data of the time varied elastic beam is performed. Then a method for evaluating the section moment of the time-varied elastic beam is introduced from the structural dynamics theory, The main section moment of the elastic beam is evaluated combining with the actually measured acceleration data of the time varied elastic beam, and evaluation result is given. The result is compared with the test results.