AXIALLY SYMMETRICAL PULSE-PROPAGATION IN SEMI-INFINITE HOLLOW CYLINDERS

The effects of dispersion and end conditions on axially symmetric pulse propagation in semi-infinite tubes are investigated. Numerical modeling of the dynamic response is accomplished using a stable and efficient finite element and wave propagation based method. This method yields the dispersive and modal data required to express displacements in a frequency domain modal expansion. Boundary conditions are applied to the tube end to obtain mode amplitudes. A fast Fourier transform is then used to get the time response. The specific end conditions considered are intended to give some insight into how the tube would behave as a member of a jointed truss structure.