We study delamination in a sandwich panel due to transient finite plane strain elastic deformations caused by local water slamming loads and use the boundary element method to analyze motion of water and the finite element method to determine deformations of the panel. The cohesive zone model is used to study delamination initiation and propagation. The fluid is assumed to be incompressible and...

In composite plate structures, it is common to combine di erent materials with very di erent Young's moduli and densities. Damping treatments can also be added to prevent high levels of vibration. For discretized problems, the static and dynamic behavior of such heterogeneous structures can be carried out with the 3D elasticity theory but this often leads to very large systems. Therefore, plate...

In order to study the anti-penetration performance of corrugated plate/aluminum foam composite sandwich structure, LS-DYNA software was used simulate. The penetration model 7.62 mm rifle bullet into structure established, and residual velocities bullets at five positions were compared analyzed. influence different initial velocity forward 900m/s angle on B is focused. results show that position...

The mechanical behavior of Zr41.25Ti13.75Cu12.5Ni10Be22.5 LM-1 has been extensively characterized under quasistatic loading conditions; however, its mechanical behavior under dynamic loading conditions is currently not well understood. A Split–Hopkinson pressure bar SHPB and a single-stage gas gun are employed to characterize the mechanical behavior of LM-1 in the strain-rate regime of 102–105 ...

The research work presented in this paper aims to optimize the dynamic response of a carbon-epoxy plate by including into laminate one frequency-dependent interleaved viscoelastic layer. To keep an acceptable bending stiffness, some holes are created layer, thus facilitating resin through layer penetration during co-curing manufacturing process. Plates (or not) perforated non-perforated) manufa...