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- W3201006225 abstract "This paper aims to numerically investigate the dynamic response and failure mechanism of corrugated composite metal sandwich structures under slamming impact. Firstly, a slamming model is established based on Coupled Eulerian-Lagrangian (CEL) method and verified through the comparison with the published results. Subsequently, the influence of slamming velocity and deadrise angle on hydrodynamic response are studied through the monitoring of hydrodynamic force, deflection and pressure distribution. Finally, ultimate damage mode and critical failure mechanism are characterized by a VUMAT subroutine developed based on Hashin failure and Yeh delamination criterion. Results indicate that the final failure is regional collapse, accompanied with fiber rupture of bottom skin, plastic hinge of aluminum core and obvious damage of upper skin. The collapse propagates gradually from the lower 1/3 (β=5°) to the upper 1/3 (β=10°) of sandwich structure, indicating that the increase of deadrise angle is beneficial to the delay of final failure. The dominate damage mode changes from widespread matrix damage (V = 6 m/s and V = 8 m/s) to concentrated fiber fracture damage (V = 10 m/s), illustrating that the influence of slamming velocity is mainly reflected in damage degree. Stripe distributed matrix tension damage is the critical damage mode, which may led to resulting damage aggravation and core-skin delamination." @default.
- W3201006225 created "2021-09-27" @default.
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- W3201006225 date "2021-11-01" @default.
- W3201006225 modified "2023-09-23" @default.
- W3201006225 title "Coupled Eulerian-Lagrangian (CEL) characterization of slamming response and failure mechanism on corrugated sandwich structures" @default.
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- W3201006225 doi "https://doi.org/10.1016/j.apor.2021.102862" @default.
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