SPECTRAL ELEMENT METHOD FOR MODELLING WAVE PROPAGATION WITH BOUNDARY REFLECTION: APPLICATION TO PIPELINE CONDITION MORNITORING
The conventional spectral element method usually cannot model the boundary reflections of wave propagation. In this paper, a method is proposed to overcome this problem, in which a few imaginary elements are combined with the original structural elements to simulate wave reflection. The dynamic stiffness matrices are formulated by considering the structural elements and the imaginary elements separately. Using these matrices, the reflected waves can be simulated successfully. The wave propagation is modelled by superposition of the results obtained from these dynamic stiffness matrices. The proposed method is verified by the experimental results of longitudinal wave propagation in a steel pipe. Numerical simulations and experimental results show that the method is effective and reliable to model wave propagation in a pipe with boundary reflections.
steel pipe wave propagation boundary reflection spectral element method
Ying Wang Xinqun Zhu Hong Hao
School of Civil and Resource Engineering, the University of Western Australia, WA 6009, Australi;Sch School of Civil and Resource Engineering, the University of Western Australia, WA 6009, Australi
国际会议
北京
英文
1676-1681
2008-10-27（万方平台首次上网日期，不代表论文的发表时间）