Wave Propagation in Laminated Cylinders with Internal Fluid and Residual Stress

Numerical computation of wave propagation in laminated cylinders with internal fluid and residual stress is obtained using a Wave Finite Element formulation for 2D waveguides. Only very small segment the system modelled, resulting low-order finite element (FE) model to which theory periodic structures applied. The method uses standard FE formulations exploits capability commercial software both structure their interaction, large reduction computational time. presented approach general, can be applied without need make assumptions related shell or low-frequency analysis. In particular, discretised 3D solid elements, thus representing through-thickness dynamics high accuracy. Residual radial hoop stresses are included by adding pre-stress stiffness matrix original system. provides simultaneously substantial cost, accurate solutions up frequency prediction dispersion curves selected circumferential orders any further Here, introduced its application filled an acoustic presented. A composite, reinforced rubber cylinder, pre-stressed tension, also shown as example pipe high-pressure applications.