Vibration Analysis for Frame Structures via Travelling Wave Approach

Zhu Guidong, Cui Hutao, Zheng Gangtie, Shao Chengxun
(Department of Astronautics and Mechanics, Harbin Institute of Technology)

Abstract: Vibration of structures assembled from one-dimensional waveguides is studied as wave motion in this paper. Waves propagate along the waveguides and reflect, scatter at the junctions. The boundary conditions are considered to assemble the local wave model to global system model, from which more accurate dynamic properties than FEM are obtained. The average dissipative power caused by damping can be calculated for any part of the structure by energy analysis, therefore structure modification and vibration control can be easily considered.
Keywords: structure vibration, energy dissipation, travelling wave.