Damage Identification of Beam with Breathing Crack under Fractal Dimension
Damage identification has been more urgent in engineering,especially beam structure which is often damaged by ambient excitation.It is based on time-frequency domain analysis of beam with breathing crack under fractal dimension in this paper.An equivalent cantilever beam model is constructed.The stiffness cosine model with time as parameter is used to simulate the opening and closing process of crack.The most widely used box dimension in fractal dimension is selected to calculate and analyze the displacement response of beam structure.The results show that the changes of box dimensional of beam structure displacement response can determine whether there is damage or not and identify the damage degree intuitively.It is more practical for damage identification in actual engineering.
Ying Zhao Yi Chun Ren
School of Changsha University of Science & Technology,Changsha,China
国际会议
上海
英文
1-7
2017-12-28（万方平台首次上网日期，不代表论文的发表时间）